Удалил лишние файлы chatSettings

Merge remote-tracking branch 'origin/anton_branch_2.0'
inaccuracies have been eliminated
2024-09-14 03:45:45 +03:00 · 2024-09-14 03:43:33 +03:00 · 2024-09-12 18:24:03 +03:00 · 2024-09-12 17:00:45 +03:00 · 2024-09-12 16:52:18 +03:00 · 2024-09-12 15:46:17 +03:00
99 changed files with 4021 additions and 1948 deletions
--- a/.gitignore
+++ b/.gitignore
@ -16,3 +16,4 @@ iu9-ca-web-chat.db
 log/
 core

+config/example.json
--- a/README.md
+++ b/README.md
@ -38,12 +38,12 @@ regexis024_build_system.sh

 Помимо самого бинарника нужен файл с настройками сервиса. Формат настроек: JSON.
 Комментарии не поддерживаются. Пример такого файла находится в example/config.json.
-Вместе с бинарным фалом так же распространяются ассеты, необъходимые для работы сайта.
-Их можно найти в папке assets. В настроках (поле `["assets"]`) указывается путь до
+Вместе с бинарным фалом так же распространяются ассеты, необходимые для работы сайта.
+Их можно найти в папке assets. В настроках (поле `config.assets`) указывается путь до
 папки с ассетами. Путь может быть как абсолютным, так и относительным к рабочей директории.
-Поле настроек `["database"]` указывает как соединиться с базой данных.
-Поддерживается только база данных sqlite. Поддерживается только хранение в файле.
-Поле `["database"]["file"]` указывает путь где хранится sqlite база данных.
+Поле настроек `config.database` указывает как соединиться с базой данных.
+Поддерживается только база данных sqlite3. Поддерживается только хранение в файле.
+Поле `config.database.file` указывает путь где хранится sqlite база данных.

 Перед тем как использовать сервис нужно его проинициализировать (а точнее проинициализировать
 базу данных):
@ -60,6 +60,36 @@ regexis024_build_system.sh
 Утилита `iu9-ca-web-chat-admin-cli` позволяет администратору сервиса контролировать его через сокет
 (адрес указан в `config["server"]["admin-command-listen"]`).

+По адресам `config.server.admin-command-listen` идёт прослушивание так называемых "команд администратора".
+iu9cawebchat определяет свой простой протокол для передачи этих команд.
+Утилита iu9-ca-web-chat-admin-cli может отправить текст с некой командой на сервер на этот адрес и получить
+ответ от сервера.
+
+```shell
+iu9-ca-web-chat-admin-cli <server admin-control address> <command text> [<command text> ...]
+```
+
+Дополнительные параметры конкатенируются, разделяясь переводом строки.
+Команды администратора:
+
+`updateroopw <new root password>` - сменить пароль пользователя с номером 0
+
+`adduser <user nickname> <user name> <user password> <user bio>` - зарегистрировать пользователя сайта 
+
+`8` - остановить сервис
+
+Если нужно ввести пробел или символ `\ ` в любое из этих полей, перед ними нужно поставить `\ `;
+Если указать меньше полей, чем нужно, незаполненные поля станут пустыми строками.
+
+Параметры конфигурации `config.lang.whitelist` и `config.lang.force-order` определяют на
+какие языки будет локализован сервер, и какие переводы приоритетнее каких.
+На данный момент поддерживаются
+ - `ru-RU` 
+ - `en-US`
+
+Все переводы хранятся в папке `assets/lang`. Для добавления своего перевода нужно форкнуть репозиторий и
+сделать копию файла `assets/lang/ru-RU.lang.json` в `assets/lang/XXXXX.lang.json`.
+
 # Список участников

 1. [Китанин Фёдор](https://gitflic.ru/user/fed-kit)
--- a/assets/HypertextPages/chat-members.nytl.html
+++ b/assets/HypertextPages/chat-members.nytl.html
@ -0,0 +1,61 @@
+{% ELDEF main JSON pres JSON userinfo JSON openedchat JSON initial_chatUpdResp %}
+<!DOCTYPE html>
+<html lang="ru">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <link rel="icon" type="image/png" href="/assets/img/favicon.png">
+    <link rel="stylesheet" href="/assets/css/common.css">
+    <link rel="stylesheet" href="/assets/css/common-popup.css">
+    <link rel="stylesheet" href="/assets/css/chat-members.css">
+    <title>{%w pres.chat-members.members-of %} {%w openedchat.name %}</title>
+</head>
+<body>
+    {% PUT chat.pass pres userinfo openedchat initial_chatUpdResp %}
+
+    <div id="user-summoning-win" class="popup-window">
+        <h1 class="popup-window-msg">{%w pres.chat-members.summon-label-nickname %}</h1>
+        <input class="one-line-input" id="summoned-user-nickname">
+        <input type="checkbox" id="summoned-user-is-read-only">
+        <label>{%w pres.chat-members.summon-label-ro %}</label><br>
+        <button class="popup-window-btn-yes" id="user-summoning-yes">{%w pres.chat-members.yes-summon %}</button>
+        <button class="popup-window-btn-no" id="user-summoning-no">{%w pres.chat-members.no-summon %}</button>
+    </div>
+
+    <div id="user-deletion-win" class="popup-window">
+        <!-- header will actually be rewritten before showing the window to include user nickname -->
+        <h1 id="user-deletion-win-title" class="popup-window-msg"> ||||||||| </h1>
+        <button class="popup-window-btn-yes" id="user-deletion-yes">{%w pres.chat-members.yes-kick %}</button>
+        <button class="popup-window-btn-no" id="user-deletion-no">{%w pres.chat-members.no-kick %}</button>
+    </div>
+
+    <div class="document-container resp-container">
+        <div id="navigation-panel" class="panel">
+            <a href="/list-rooms" id="go-to-chat-list" class="panel-thing">
+                <img alt="Go to list of chats" src="/assets/img/list-rooms.svg" width="32px">
+            </a>
+            <a href="/user/{% W userinfo.nickname %}" id="go-to-my-profile" class="panel-thing">
+                <img alt="Go to my profile" src="/assets/img/user.svg" width="32px">
+            </a>
+            <p class="panel-thing panel-header-txt">
+                {%w pres.chat-members.members-list-of %} {% W openedchat.name %} ({% W openedchat.nickname %})
+            </p>
+            <a href="/chat/{% W openedchat.nickname %}" id="go-to-chat-settings" class="panel-thing">
+                <img alt="Back to chat" src="/assets/img/return.svg" width="32px">
+            </a>
+        </div>
+
+        <div class="dynamic-block-list">
+            <img id="CM-btn-add" class="button-add centered-block-el" alt="New chat" src="/assets/img/add.svg">
+            <div class="dynamic-block-list-el-container" id="CM-list">
+
+            </div>
+        </div>
+    </div>
+
+    <script src="/assets/js/common.js"></script>
+    <script src="/assets/js/common-popup.js"></script>
+    <script src="/assets/js/chat-members.js"></script>
+</body>
+</html>
+{% ENDELDEF %}
--- a/assets/HypertextPages/chat.nytl.html
+++ b/assets/HypertextPages/chat.nytl.html
@ -1,40 +1,68 @@
-{% ELDEF main JSON pres JSON userinfo %}
+{% ELDEF pass JSON pres JSON userinfo JSON openedchat JSON initial_chatUpdResp %}
+<script>
+    let pres = {% PUT jsinsert pres %};
+    let userinfo = {% PUT jsinsert userinfo %};
+    let openedchat = {% PUT jsinsert openedchat %};
+    let initial_chatUpdResp = {% PUT jsinsert initial_chatUpdResp %};
+</script>
+{% ENDELDEF %}
+
+{% ELDEF main JSON pres JSON userinfo JSON openedchat JSON initial_chatUpdResp %}
 <!DOCTYPE html>
-<html lang="ru">
+<html lang="en">
 <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>Веб-Чат</title>
+    <link rel="icon" type="image/png" href="/assets/img/favicon.png">
+    <link rel="stylesheet" href="/assets/css/debug.css">
+    <link rel="stylesheet" href="/assets/css/common.css">
+    <link rel="stylesheet" href="/assets/css/common-popup.css">
    <link rel="stylesheet" href="/assets/css/chat.css">
+    <title>{%w pres.chat.header-chat %} {%w openedchat.name %}</title>
 </head>
 <body>
-<div class="chat-container">
-    <div class="chat-header">
-        <span class="room-name">Веб чат</span>
-        <button class="members" onclick="openMembersList()">Показать участников</button>
+    {% PUT chat.pass pres userinfo openedchat initial_chatUpdResp %}
+
+    <div id="msg-deletion-win" class="popup-window">
+        <h1 class="popup-window-msg">{%w pres.chat.reask-delete-message %}</h1>
+        <!-- mesage preview will be actually rewritten before each window activation-->
+        <p class="message-in-popup-preview" id="win-deletion-msg-preview">|||||||||</p>
+        <button class="popup-window-btn-yes" id="msg-deletion-yes">{%w pres.chat.yes-delete %}</button>
+        <button class="popup-window-btn-no" id="msg-deletion-no">{%w pres.chat.no-delete %}</button>
    </div>
-    <div class="chat-messages" id="chat-messages">
-        <!-- Сообщения чата будут здесь -->
-    </div>
-    <div class="chat-footer">
-        <input type="text" class="chat-input" id="chat-input" placeholder="Введите сообщение...">
-        <button class="chat-send-button" onclick="sendMessage()">Отправить</button>
-    </div>
-</div>
-<div class="overlay" id="overlay">
-    <div class="members-list" id="members-list">
-        <div class="members-list-header">
-            <span class="close" onclick="closeMembersList()">&times;</span>
-            <h2 class="all-members">Все участники</h2>
+
+    <div class="fullscreen-container resp-container">
+        <div class="panel" id="navigation-info-panel">
+            <a href="/list-rooms" id="go-to-chat-list" class="panel-thing">
+                <img alt="Go to list of chats" src="/assets/img/list-rooms.svg" width="32px">
+            </a>
+            <a href="/user/{% W userinfo.nickname %}" id="go-to-my-profile" class="panel-thing">
+                <img alt="Go to my profile" src="/assets/img/user.svg" width="32px">
+            </a>
+            <p class="panel-thing panel-header-txt"> {% W openedchat.name %} ({% W openedchat.nickname %})</p>
+            <a href="/chat-members/{% W openedchat.nickname %}" id="go-to-chat-settings" class="panel-thing">
+                <img alt="Settings of chat. List of members" src="/assets/img/settings-iron.svg" width="32px">
+            </a>
        </div>
-        <div class="members-list-body">
-            <ul id="members-list-body">
-                <!-- Список участников будет добавлен динамически -->
-            </ul>
+        <div id="chat-widget">
+            <div class="chat-debug-rect" id="debug-line-highest" style="background-color: #8600d3"></div>
+            <div class="chat-debug-rect" id="debug-line-top-padding" style="background-color: #ff00ae"></div>
+            <div class="chat-debug-rect" id="debug-line-bottom-padding" style="background-color: #ff0062"></div>
+            <div class="chat-debug-rect" id="debug-line-lowest" style="background-color: #ff2f00"></div>
+            <div id="top-loading" class="message-supercontainer">
+                <img class="loading-spinner" alt="Loading backward..." src="/assets/gif/loading.gif">
+            </div>
+            <div id="bottom-loading" class="message-supercontainer">
+                <img class="loading-spinner" alt="Loading forward..." src="/assets/gif/loading.gif">
+            </div>
        </div>
+        <div class="panel" id="input-panel">
+            <div contentEditable id="message-input" class="panel-thing"></div>
+        </div>
+        <script src="/assets/js/common.js"></script>
+        <script src="/assets/js/common-popup.js"></script>
+        <script src="/assets/js/chat.js"></script>
    </div>
-</div>
-<script src="/assets/js/chat.js"></script>
 </body>
 </html>
 {% ENDELDEF %}
--- a/assets/HypertextPages/edit-profile.nytl.html
+++ b/assets/HypertextPages/edit-profile.nytl.html
@ -0,0 +1,71 @@
+{% ELDEF main JSON pres JSON userinfo JSON alienprofile JSON errors %}
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <link rel="icon" type="image/png" href="/assets/img/favicon.png">
+    <link rel="stylesheet" href="/assets/css/common.css">
+    <link rel="stylesheet" href="/assets/css/edit-profile.css">
+    <title>{%w pres.edit-profile.header-profile-of %} {%w alienprofile.name %}</title>
+</head>
+<body>
+
+    <div class="document-container">
+        <div id="navigation-panel" class="panel">
+            <a href="/list-rooms" id="go-to-chat-list" class="panel-thing">
+                <img alt="Go to list of chats" src="/assets/img/list-rooms.svg" width="32px">
+            </a>
+            <a href="/user/{% W userinfo.nickname %}" id="go-to-my-profile" class="panel-thing">
+                <img alt="Go to my profile" src="/assets/img/user.svg" width="32px">
+            </a>
+        </div>
+
+        {% FOR error IN errors %}
+            <div class="server-notif-error-msg-box">
+                {% W error.text %}
+            </div>
+        {% ENDFOR %}
+
+        <div class="profile-container">
+            <h2 class="profile-name-text">{% W alienprofile.name %}</h2>
+            <h3 class="profile-nickname-text">{%w pres.edit-profile.directive-nickname %} {% W alienprofile.nickname %}</h3>
+            <p class="profile-bio-text">
+                {% W alienprofile.bio %}
+            </p>
+        </div>
+
+        <div class="profile-container">
+            <h1 class="wide-centered-header">{%w pres.edit-profile.change-user-attributes %}</h1>
+            <form action = "/user/{% W alienprofile.nickname %}" method="post" enctype="application/x-www-form-urlencoded">
+                <table class="logins-input-table">
+                    <tr>
+                        <td class="logins-input-td1">
+                            <label for="new-name-input">{%w pres.edit-profile.directive-name %}</label>
+                        </td>
+                        <td class="logins-input-td2">
+                            <input name="name" id="new-name-input" type="text"
+                                   placeholder="{%w pres.edit-profile.placeholder-name %}" class="one-line-input">
+                        </td>
+                    </tr>
+                    <tr>
+                        <td class="logins-input-td1">
+                            <label for="new-password-input">{%w pres.edit-profile.directive-password %}</label>
+                        </td>
+                        <td class="logins-input-td2">
+                            <input name="password" id="new-password-input" type="password"
+                                   placeholder="{%w pres.edit-profile.placeholder-password %}" class="one-line-input">
+                        </td>
+                    </tr>
+                </table>
+                <label for="input-change-bio">{%w pres.edit-profile.directive-bio %}</label>
+                <br>
+                <textarea name="bio" id="input-change-bio" class="multiline-input"></textarea>
+                <button class="action-button centered-block-el" type="submit">{%w pres.edit-profile.act-submit %}</button>
+            </form>
+        </div>
+    </div>
+
+</body>
+</html>
+{% ENDELDEF%}
--- a/assets/HypertextPages/err-404.html
+++ b/assets/HypertextPages/err-404.html
@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <link rel="icon" type="image/png" href="/assets/img/favicon.png">
+    <title>Not found</title>
+</head>
+<body>
+    <h1>Page not found</h1>
+</body>
+</html>
--- a/assets/HypertextPages/list-rooms.nytl.html
+++ b/assets/HypertextPages/list-rooms.nytl.html
@ -1,68 +1,74 @@
-{% ELDEF main JSON pres JSON userinfo %}
+{% ELDEF main JSON pres JSON userinfo JSON initial_chatListUpdResp %}
 <!DOCTYPE html>
-<html lang="{% WRITE pres.lang %}">
+<html lang="{% W pres.lang %}">
 <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>Список Чат-Комнат</title>
+    <title>{%w pres.list-rooms.header %}</title>
+    <link rel="icon" type="image/png" href="/assets/img/favicon.png">
+    <link rel="stylesheet" href="/assets/css/common.css">
+    <link rel="stylesheet" href="/assets/css/common-popup.css">
    <link rel="stylesheet" href="/assets/css/list-rooms.css">
 </head>
 <body>
-{% PUT pass-pres-userinfo pres userinfo %}
-<div class="container">
-    <h1 style="color: white;">Выберите Чат-Комнату</h1>
-    <ul class="room-list">
-        <!-- Здесь будет список комнат -->
-    </ul>
-    <button class="create-room-button" onclick="openCreateRoomModal()">Создать Комнату</button>
-</div>
+    <script>
+        let pres = {% PUT jsinsert pres %};
+        let userinfo = {% PUT jsinsert userinfo %};
+        let initial_chatListUpdResp = {% PUT jsinsert initial_chatListUpdResp %};
+    </script>
+    <div id="chat-creation-win" class="popup-window">
+        <h1 class="popup-window-msg">{%w pres.list-rooms.new-chat-header %}</h1>
+        <table class="id-str-input-table">
+            <tr>
+                <td class="id-str-input-td1">
+                    <label for="chat-nickname-input">{%w pres.list-rooms.directive-nickname %}</label>
+                </td>
+                <td class="id-str-input-td2">
+                    <input id="chat-nickname-input" type="text" class="one-line-input"
+                           placeholder="{%w pres.list-rooms.placeholder-nickname %}" required>
+                </td>
+            </tr>
+            <tr>
+                <td class="id-str-input-td1">
+                    <label for="chat-name-input">{%w pres.list-rooms.directive-name %}</label>
+                </td>
+                <td class="id-str-input-td2">
+                    <input id="chat-name-input" type="text" class="one-line-input"
+                           placeholder="{%w pres.list-rooms.placeholder-name %}" required>
+                </td>
+            </tr>
+        </table>
+        <h1 class="popup-window-msg">{%w pres.list-rooms.reask-create-new-chat %}</h1>
+        <button class="popup-window-btn-yes" id="chat-creation-win-yes">{%w pres.list-rooms.yes-create %}</button>
+        <button class="popup-window-btn-no" id="chat-creation-win-no">{%w pres.list-rooms.no-create %}</button>
+    </div>

-<!-- Модальное окно для создания комнаты -->
-<!--<div id="createRoomModal" class="modal">-->
-<!--    <div class="modal-content">-->
-<!--        <div class="modal-header">-->
-<!--            <span class="close" onclick="closeCreateRoomModal()">&times;</span>-->
-<!--            <h2>Создать Комнату</h2>-->
-<!--        </div>-->
-<!--        <div class="modal-body">-->
-<!--            <input type="text" id="newRoomName" placeholder="Название комнаты">-->
-<!--            <input type="password" id="newRoomNickname" placeholder="Никнейм комнаты">-->
-<!--        </div>-->
-<!--        <div id="error"></div>-->
-<!--        <div class="modal-footer">-->
-<!--            <button class="join-button" onclick="createRoom()">Создать</button>-->
-<!--        </div>-->
-<!--    </div>-->
-<!--</div>-->
+    <div id="chat-renunciation-win" class="popup-window">
+        <h1 id="chat-renunciation-win-title" class="popup-window-msg">||||||||||</h1>
+        <button class="popup-window-btn-yes" id="chat-renunciation-win-yes">{%w pres.list-rooms.yes-leave %}</button>
+        <button class="popup-window-btn-no" id="chat-renunciation-win-no">{%w pres.list-rooms.no-leave %}</button>
+    </div>

-<!--&lt;!&ndash; Модальное окно для добавления участников &ndash;&gt;-->
-<!--<div class="overlay" id="add_members">-->
-<!--    <div class="add-members">-->
-<!--        <div class="add-members-header">-->
-<!--            <span class="close" onclick="closeAdd()">&times;</span>-->
-<!--            <h2>Добавить участников</h2>-->
-<!--        </div>-->
-<!--        <div class="add-members-body">-->
-<!--            <input type="text" id="newMemberLogin" placeholder="Логин пользователя">-->
-<!--        </div>-->
-<!--        <div class="add-members-footer">-->
-<!--            <button class="add-member-button" onclick="addMember()">Добавить</button>-->
-<!--        </div>-->
-<!--    </div>-->
-<!--</div>-->
-<!--<div class="overlay" id="delete-chat">-->
-<!--    <div class="delete-chat">-->
-<!--        <div class="delete-chat-header">-->
-<!--            <span class="delete-close" onclick="closeConfirm()">&times;</span>-->
-<!--            <h2>Вы уверены, что хотите удалить чат?</h2>-->
-<!--        </div>-->
-<!--        <div class="delete-chat-body">-->
-<!--            <button class="confirm" onclick="deleteChat()">Да</button>-->
-<!--            <button class="cancel" onclick="closeConfirm()">Нет</button>-->
-<!--        </div>-->
-<!--    </div>-->
-<!--</div>-->
-<script src="/assets/js/list-rooms.js"></script>
+    <div class="document-container resp-container">
+        <div id="navigation-panel" class="panel">
+            <a href="/user/{%w userinfo.nickname %}" id="go-to-my-profile" class="panel-thing">
+                <img alt="Go to my profile" src="/assets/img/user.svg" width="32px">
+            </a>
+            <p class="panel-thing panel-header-txt">
+                {%w pres.list-rooms.page-description %}
+            </p>
+        </div>
+
+        <div class="dynamic-block-list">
+            <img id="CL-bacbe" class="button-add centered-block-el" alt="New chat" src="/assets/img/add.svg">
+            <div class="dynamic-block-list-el-container" id="CL-dblec">
+
+            </div>
+        </div>
+    </div>
+    <script src="/assets/js/common.js"></script>
+    <script src="/assets/js/common-popup.js"></script>
+    <script src="/assets/js/list-rooms.js"></script>
 </body>
 </html>
 {% ENDELDEF %}
--- a/assets/HypertextPages/login.nytl.html
+++ b/assets/HypertextPages/login.nytl.html
@ -1,26 +1,43 @@
-{% ELDEF main JSON pres JSON userinfo %}
+{% ELDEF main JSON pres JSON userinfo JSON errors %}
 <!DOCTYPE html>
-<html lang="{% WRITE pres.lang %}">
+<html lang="{% W pres.lang %}">
 <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>{% WRITE pres.phr.decl.page-login %}</title>
+    <link rel="icon" type="image/png" href="/assets/img/favicon.png">
+    <link rel="stylesheet" href="/assets/css/common.css">
    <link rel="stylesheet" href="/assets/css/login.css">
-
+    <title>{% W pres.login.header %}</title>
 </head>
-
 <body>
-{% PUT pass-pres-userinfo pres userinfo %}
-<div class="form-container">
-    <h1 class="hide-cursor no-select">{% WRITE pres.phr.decl.enter %}</h1>
-    <form action="/login" method="post" enctype="application/x-www-form-urlencoded">
-        <label for="nickname">{% WRITE pres.phr.decl.nickname %}</label>
-        <input type="text" name="nickname" id="nickname"><br>
-        <label for="password">{% WRITE pres.phr.decl.password %}</label>
-        <input type="password" name="password"  id="password"><br>
-        <button type="submit" class="hide-cursor no-select">{% WRITE pres.phr.act.enter %}</button>
-    </form>
-</div>
+    {% FOR error IN errors %}
+        <div class="server-notif-error-msg-box">
+            {% W error.text %}
+        </div>
+    {% ENDFOR %}
+
+    <div class="form-container">
+        <h1 class="wide-centered-header">{% W pres.login.header %}</h1>
+        <form action="/login" method="post" enctype="application/x-www-form-urlencoded">
+            <table class="logins-input-table">
+                <tr>
+                    <td class="logins-input-td1"><label for="input-nickname">{% W pres.login.directive-nickname %}</label></td>
+                    <td class="logins-input-td2">
+                        <input type="text" name="nickname" id="input-nickname"
+                               placeholder="{% W pres.login.placeholder-nickname %}" class="one-line-input" required>
+                    </td>
+                </tr>
+                <tr>
+                    <td class="logins-input-td1"><label for="input-password">{% W pres.login.directive-password %}</label></td>
+                    <td class="logins-input-td2">
+                        <input name="password" id="input-password" type="password"
+                               placeholder="{% W pres.login.placeholder-password %}" class="one-line-input" required>
+                    </td>
+                </tr>
+            </table>
+            <button class="action-button centered-block-el" type="submit">{% W pres.login.act %}</button>
+        </form>
+    </div>

 </body>
 </html>
--- a/assets/HypertextPages/pass-pres-userinfo.nytl.html
+++ b/assets/HypertextPages/pass-pres-userinfo.nytl.html
@ -1,6 +0,0 @@
-{% ELDEF main JSON pres JSON userinfo %}
-<script>
-    let pres = {% PUT jsinsert pres %};
-    let userinfo = {% PUT jsinsert userinfo %};
-</script>
-{% ENDELDEF %}
--- a/assets/HypertextPages/profile.nytl.html
+++ b/assets/HypertextPages/profile.nytl.html
@ -1,39 +0,0 @@
-{% ELDEF main JSON pres JSON userinfo %}
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <link rel="stylesheet" href="/assets/css/profile.css">
-    <title>Профиль</title>
-</head>
-<body>
-<div class="main-container">
-    <div class="profile-header">
-        <h1 style="color: white; text-align: center;">Профиль пользователя</h1>
-        <a class="return" href="chat.nytl.html">Назад</a>
-    </div>
-    <form>
-        <div class="columns">
-            <div class="column">
-                <img class="avatar" src="/assets/img/empty_avatar.png" id="avatar" height="200" width="200"><br>
-                <input type="file" id="fileInput" style="display:none">
-                <button class="add" type="button" onclick="document.getElementById('fileInput').click();">Изменить фото</button><br>
-            </div>
-            <div class="column">
-                <input type="text" name="username" placeholder = "Имя пользователя" value="Some Name" id="username"><br>
-                <input type="text" name="login" placeholder="Логин" value="some_login123" id="login" readonly><br>
-            </div>
-        </div>
-        <h3 style="color:#007bb5;">О себе</h3>
-        <div class="additional-info">
-            <textarea name="bio" placeholder="Напишите о себе..." id="bio"></textarea>
-        </div>
-        <button class="save" type="submit">Сохранить изменения</button>
-    </form>
-</div>
-
-<script src="/assets/js/list-rooms.js"> </script>
-
-</body>
-</html>
-{% ENDELDEF%}
--- a/assets/HypertextPages/register.nytl.html
+++ b/assets/HypertextPages/register.nytl.html
@ -0,0 +1,51 @@
+{% ELDEF main JSON pres JSON userinfo JSON messages %}
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <link rel="icon" type="image/png" href="/assets/img/favicon.png">
+    <link rel="stylesheet" href="/assets/css/common.css">
+    <link rel="stylesheet" href="/assets/css/register.css">
+    <title>{% W pres.register.header %}</title>
+</head>
+<body>
+    {% FOR error IN messages %}
+    <div class="server-notif-error-msg-box">
+        {% W error.text %}
+    </div>
+    {% ENDFOR %}
+
+    <div class="form-container">
+        <h1 class="wide-centered-header">{% W pres.register.header %}</h1>
+        <form action="/register" method="post" enctype="application/x-www-form-urlencoded">
+            <table class="reg-input-table">
+                <tr>
+                    <td class="reg-input-td1"><label for="input-nickname">{% W pres.register.directive-nickname %}</label></td>
+                    <td class="reg-input-td2">
+                        <input type="text" name="nickname" id="input-nickname"
+                               placeholder="{% W pres.register.placeholder-nickname %}" class="one-line-input" required>
+                    </td>
+                </tr>
+                <tr>
+                    <td class="reg-input-td1"><label for="input-name">{% W pres.register.directive-name %}</label></td>
+                    <td class="reg-input-td2">
+                        <input type="text" name="name" id="input-name"
+                               placeholder="{% W pres.register.placeholder-name %}" class="one-line-input" required>
+                    </td>
+                </tr>
+                <tr>
+                    <td class="reg-input-td1"><label for="input-password">{% W pres.register.directive-password %}</label></td>
+                    <td class="reg-input-td2">
+                        <input name="password" id="input-password" type="password"
+                               placeholder="{% W pres.register.placeholder-password %}" class="one-line-input" required>
+                    </td>
+                </tr>
+            </table>
+            <button class="action-button centered-block-el" type="submit">{% W pres.register.act %}</button>
+        </form>
+    </div>
+
+</body>
+</html>
+{%ENDELDEF%}
--- a/assets/HypertextPages/registration.nytl.html
+++ b/assets/HypertextPages/registration.nytl.html
@ -1,27 +0,0 @@
-{% ELDEF main JSON pres JSON userinfo %}
-<!DOCTYPE html>
-<html lang="ru">
-<head>
-    <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>Страница Регистрации</title>
-    <link rel="stylesheet" href="/assets/css/registration.css">
-
-</head>
-
-<body>
-<div class="form-container">
-    <h1 class="hide-cursor no-select">Вход</h1>
-    <form action="assets/html/list-rooms.html" method="post">
-        <input type="text" name="username" placeholder="Имя пользователя" id="username"><br>
-        <input type="text" name="login" placeholder="Логин" id="login"><br>
-        <input type="password" name="password" placeholder="Пароль" id="password"><br>
-        <button type="submit" class="hide-cursor no-select">Зарегистрироваться</button>
-        <div id="error"></div>
-    </form>
-</div>
-
-<script src="assets/js/registration.js"></script>
-</body>
-</html>
-{% ENDELDEF %}
--- a/assets/HypertextPages/view-profile.nytl.html
+++ b/assets/HypertextPages/view-profile.nytl.html
@ -0,0 +1,36 @@
+{% ELDEF main JSON pres JSON userinfo JSON alienprofile %}
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <link rel="icon" type="image/png" href="/assets/img/favicon.png">
+    <link rel="stylesheet" href="/assets/css/common.css">
+    <!-- This page is so simple, that it does not even have it's separate css file -->
+    <title>{%w pres.view-profile.header-profile-of %} {%w alienprofile.name %}</title>
+</head>
+<body>
+
+    <div class="document-container resp-container">
+        <div id="navigation-panel" class="panel">
+            <a href="/list-rooms" id="go-to-chat-list" class="panel-thing">
+                <img alt="Go to list of chats" src="/assets/img/list-rooms.svg" width="32px">
+            </a>
+            <a href="/user/{% W userinfo.nickname %}" id="go-to-my-profile" class="panel-thing">
+                <img alt="Go to my profile" src="/assets/img/user.svg" width="32px">
+            </a>
+        </div>
+
+        <div class="profile-container">
+            <h2 class="profile-name-text">{%w alienprofile.name %}</h2>
+            <h3 class="profile-nickname-text">{%w pres.view-profile.directive-nickname%} {%w alienprofile.nickname %}</h3>
+            <p class="profile-bio-text">
+                {%w alienprofile.bio %}
+            </p>
+        </div>
+    </div>
+
+</body>
+</html>
+
+{% ENDELDEF%}
--- a/assets/css/chat-members.css
+++ b/assets/css/chat-members.css
@ -0,0 +1,33 @@
+#CM-btn-add {
+    margin-top: 6px;
+    margin-bottom: 4px;
+    display: none;
+}
+
+.CM-member-box {
+    display: flex;
+    flex-direction: row;
+}
+
+.CL-member-box-nickname {
+    margin-left: 8px;
+    justify-self: flex-start;
+}
+
+.CM-member-box-name {
+    margin-left: 14px;
+    justify-self: flex-start;
+}
+
+.CM-member-box-role {
+    margin-left: auto;
+    justify-self: flex-end;
+}
+
+.CM-member-box-leave-btn {
+    margin-left: 10px;
+    margin-right: 8px;
+    justify-self: flex-end;
+    width: 16px;
+    cursor: pointer;
+}
--- a/assets/css/chat.css
+++ b/assets/css/chat.css
@ -1,202 +1,143 @@
-body {
-    font-family: Arial, sans-serif;
-    display: flex;
-    justify-content: center;
-    align-items: center;
-    height: 100vh;
-    margin: 0;
-    background-color: #e5e5e5;
-}
-
-.chat-container {
-    width: 100%;
-    max-width: 800px;
-    height: 90vh;
-    background-color: white;
-    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
-    display: flex;
-    flex-direction: column;
-    border-radius: 8px;
-    overflow: hidden;
-}
-
-.chat-header {
-    background-color: #007bb5;
-    color: white;
-    padding: 25px;
-    display: flex;
-    justify-content: center;
-    align-items: center;
-    position: relative;
-}
-.room-name {
-    position: absolute;
-    left: 50%;
-    font-size: 24px;
-}
-.members {
-    border: none;
-    position: absolute;
-    left: 80%;
-    border-radius: 10px;
-    cursor: pointer;
-    width: 150px;
-    background-color: #f7f7f7;
-    height: 25px;
-    transition: background-color 0.3s ease;
-}
-.members:hover {
-    background-color: #218838;
-}
-.chat-messages {
-    flex: 1;
-    padding: 15px;
-    overflow-y: auto;
-    background-color: #f7f7f7;
-}
-
-.chat-message {
-    display: flex;
-    align-items: flex-start;
-    margin-bottom: 15px;
-}
-
-.chat-message .avatar {
-    width: 40px;
-    height: 40px;
-    border-radius: 50%;
-    overflow: hidden;
-    margin-right: 10px;
-}
-
-.chat-message .avatar img {
-    width: 100%;
+body, html {
    height: 100%;
-    object-fit: cover;
 }

-.chat-message .message-content {
-    max-width: 70%;
+#chat-widget {
+    position: relative;
+    flex: 1;
+    background-color: #f1f1f1;
+    overflow: hidden;
+}
+
+.message-supercontainer{
+    position: absolute;
+    width: 100%;
+    left: 0;
+    /*background-color: rgba(150, 0, 100, 50);*/
+    background-color: rgba(0, 0, 0, 0);
+    /*display: flex;*/
+    /*flex-direction: row;*/
+    /*justify-content: center;*/
+}
+
+.message-box{
+    /*display: inline-block;*/
+    padding: 5px;
+}
+
+.message-box-mine {
+    margin-right: 5px;
+    margin-left: auto;
+    max-width: 400px;
+    border: 2px solid #82a173;
+    padding: 5px;
+    background-color: #cdff9b;
+    color: black;
+    /*justify-self: flex-end;*/
+}
+
+.message-box-alien {
+    margin-left: 5px;
+    margin-right: auto;
+    max-width: 400px;
+    border: 2px solid dimgrey;
+    padding: 5px;
    background-color: white;
-    padding: 10px;
-    border-radius: 8px;
-    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
+    color: black;
+    /*justify-self: flex-start;*/
 }

-.chat-message .message-content .username {
+/* Only non-system messages can be deleted. Deleted messages do not have delete button
+ This class should be used with (and, ofcourse, after) class message-box-my/message-box-alien */
+.message-box-deleted {
+    border: 2px solid #cb0005;
+    background-color: #ffc1bc;
+}
+
+.message-box-deleted .message-box-msg{
    font-weight: bold;
-    margin-bottom: 5px;
 }

-.chat-message .message-content .text {
+.message-box-system {
+    margin-left: auto;
+    margin-right: auto;
+    max-width: 500px;
+    padding: 4px;
+    background-color: #2d2d2d;
+    color: white;
+    font-weight: bold;
+    justify-self: center;
+}
+
+/* in #chat-widget .message-box */
+.message-box-top{
+    /* You see, each message contains a 20+2+2 px high icon that HAS TO BE LOADED FIRST.
+    This happens after window.onload, so I added a crutch: loading won't update height in
+     unpredictable moment. cause it will be already high enough. BUGA-GA-GA!! */
+    min-height: 30px;
+    display: block;
+}
+
+.message-box-sender-name{
+    color: black;
+    text-decoration: none;
+    padding: 2px;
+    display: inline;
+    font-size: 0.8em;
+}
+
+/* Additional to message-box-sender-name */
+.message-box-sender-shortname {
+    font-weight: bold;
+    padding-left: 3px;
+    font-size: 0.94em;
+}
+
+.message-box-sender-name:hover{
+    color: #1060ff
+}
+
+.message-box-button{
+    width: 20px;
+    padding: 2px;
+    cursor: pointer;
+    display: inline;
+}
+
+.message-box-msg{
    word-wrap: break-word;
 }

-.chat-footer {
-    display: flex;
+#input-panel {
+    min-height: 20px;
+}
+
+#message-input {
    padding: 15px;
-    padding-left: 50px;
-    border-top: 1px solid #ddd;
-}
-
-.chat-input {
-    flex: 1;
-    padding: 10px;
-    border: 1px solid #ddd;
-    border-radius: 20px;
-    margin-right: 10px;
-    outline: none;
-}
-
-.chat-send-button {
-    padding: 10px 20px;
-    border: none;
-    background-color: #0088cc;
-    color: white;
-    border-radius: 20px;
-    cursor: pointer;
-    outline: none;
-}
-.members-list {
-    display: none;
-    position: fixed;
-    background-color: #fff;
-    margin: 10% auto;
-    padding: 20px;
-    border: 1px solid #888;
-    width: 80%;
-    max-width: 400px;
-    border-radius: 10px;
-    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
-}
-.members-list-header {
-    display: flex;
-}
-.all-members {
-    position: absolute;
-    left: 32%;
-    top: 0%;
-    margin-bottom: 30px;
-    font-family: Arial, sans-serif;
-}
-.close {
-    position: absolute;
-    right: 5%;
-    font-size: 24px;
-    font-weight: bold;
-}
-.members-list span {
-    cursor: pointer;
-}
-.members-list-body ul {
-    list-style-type: none;
-    left: 0%;
-}
-.members-list-body img {
-    margin-top: 10px;
-    left: 0%;
-    height: 30px;
-    width: 30px;
-    border-radius: 50%;
-}
-.members-list-body a {
-    margin-left: 5px;
-    margin-top: 10px;
-    text-decoration: none;
-    color: black;
-
-}
-.members-list-body a:hover {
-    text-decoration: underline;
-    color: #0088cc;
-}
-.members-list-body button {
-    padding: 5px 10px;
-    border: none;
-    background-color: #dc2e45;
-    color: white;
-    border-radius: 20px;
-    position: absolute;
-    left: 300px;
-    margin-top: 20px;
-    cursor: pointer;
-    transition: background-color 0.3s ease;
-}
-.members-list-body button:hover {
-    background-color: #881527;
-}
-.overlay {
-    display: none;
-    position: fixed;
-    top: 0;
-    left: 0;
+    height: auto;
    width: 100%;
-    height: 100%;
-    background-color: rgba(0, 0, 0, 0.5);
-    justify-content: center;
-    align-items: center;
-    z-index: 1000;
+    display: inline-block;
+    background-color: white;
+    border: 1px solid #1000d0;
+    border-radius : 7px;
+    font-size: .9rem;
+    margin: 10px;
 }
-.chat-send-button:hover {
-    background-color: #007bb5;
+
+.message-in-popup-preview{
+    border: 4px solid red;
+    width: 80%;
+    max-width: 200px;
+    margin-left: auto;
+    margin-right: auto;
+    max-height: 20%;
+    word-wrap: break-word;
+}
+
+.loading-spinner{
+    margin-left: auto;
+    margin-right: auto;
+    background-color: rgba(0, 0, 0, 0);
+    width: 25px;
+    display: block;
 }
--- a/assets/css/common-popup.css
+++ b/assets/css/common-popup.css
@ -0,0 +1,50 @@
+.popup-overlay-veil {
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    background-color: rgba(0, 0, 0, 0.6);
+
+    z-index: 99;
+    display: none; /* Hidden by default */
+}
+
+.popup-window {
+    position: fixed;
+    top: 50%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+    background: white;
+    padding: 20px;
+    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
+
+    z-index: 100;
+    display: none;
+}
+
+.popup-btn {
+    display: inline;
+    padding: 5px;
+    border-bottom: 3px;
+}
+
+.popup-window-btn-yes {
+    background-color: #0c7f0e;
+    border-radius: 5px;
+    padding: 12px;
+    color: white;
+}
+
+.popup-window-btn-no {
+    background-color: #ff0005;
+    border-radius: 5px;
+    padding: 12px;
+    color: white;
+}
+
+.popup-window-msg {
+    padding-left: 20px;
+    font-weight: bold;
+    font-size: 1.3em;
+}
--- a/assets/css/common.css
+++ b/assets/css/common.css
@ -0,0 +1,206 @@
+/* Profile view elements */
+.profile-container {
+    background: white;
+    border-radius: 5px;
+    padding: 20px;
+    margin-top: 60px; /* Space below the fixed panel */
+    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.3);
+}
+
+.profile-name-text {
+    color: black;
+}
+
+.profile-nickname-text{
+    color: #444;
+    text-align: left;
+}
+
+.profile-bio-text {
+    padding-top: 40px;
+    text-align: left;
+    line-height: 1.6;
+    color: black;
+}
+
+/* Panels */
+.panel {
+    width: 100%;
+    border: 2px solid blue;
+    background-color: #54b3ff;
+    display: flex;
+    flex-direction: row;
+    align-items: center;
+}
+
+.panel-thing {
+    padding: 6px;
+}
+
+.panel-header-txt{
+    color: white;
+    font-size: 1.9em;
+    flex: 1;
+    text-align: center;
+}
+
+
+/* Containers for the whole document */
+
+* {
+    margin: 0;
+    padding: 0;
+    box-sizing: border-box;
+    font-family: Arial, sans-serif;
+}
+
+.document-container {
+    width: 80%; /* Full width of the viewport */
+    margin: 0 auto; /* Center the container horizontally */
+}
+
+.fullscreen-container {
+    width: 80%; /* Full width of the viewport */
+    height: 100vh; /* Full height of the viewport */
+    display: flex;
+    flex-direction: column; /* Stack children vertically */
+    margin: 0 auto; /* Center the container horizontally */
+}
+
+@media (orientation: landscape) {
+    .resp-container{
+        width: 80%;
+    }
+}
+
+@media (orientation: portrait){
+    .resp-container{
+        width: 100%;
+    }
+}
+
+body {
+    background-color: #f000f0;
+    background-image: url("/assets/img/clavicle-transparent.png"), url("/assets/img/broken-clavicle.png");
+    background-repeat: revert;
+    background-size: 10%, 25%;
+}
+
+/* Notifications, returned from server and embedded into html page at render-time */
+
+.server-notif-error-msg-box{
+    font-size: 1.3em;
+    text-align: center;
+    padding: 10px;
+    border: 2px solid red;
+    border-radius: 30px;
+    background-color: #ff5050;
+    max-width: 40%;
+    margin: 15px auto;
+}
+
+/* Centered headers */
+
+.wide-centered-header {
+    width: 100%;
+    text-align: center;
+    font-size: 1.4em;
+}
+/* Cool buttons with text */
+
+.action-button {
+    padding: 10px 15px;
+    background-color: #007bff;
+    color: white;
+    border: none;
+    border-radius: 5px;
+    cursor: pointer;
+    transition: background-color 0.3s;
+}
+
+
+.action-button:hover {
+    background-color: #0056b3; /* Darker blue on hover */
+}
+
+/* This is for centering non-100%wide block */
+
+.centered-block-el {
+    display: block;
+    margin-left: auto;
+    margin-right: auto;
+}
+
+/* Beautiful text input */
+
+.one-line-input {
+    width: 100%;
+    padding: 8px;
+    margin: 8px 0;
+    border: 1px solid #ccc;
+    border-radius: 4px;
+}
+
+.multiline-input {
+    width: 100%;
+    /*max-width: 600px;*/
+    height: 200px;
+    padding: 10px;
+    font-size: 1.15em;
+    border: 2px solid #ccc;
+    border-radius: 5px;
+    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.1); /* Subtle shadow */
+    outline: none; /* Remove default outline on focus */
+    resize: vertical; /* Allow resizing vertically */
+    transition: border-color 0.15s, box-shadow 0.15s; /* Smooth transition for border color and shadow */
+}
+
+.multiline-input:focus {
+    border-color: #007bff; /* Change border color on focus */
+    box-shadow: 0 0 5px rgba(0, 123, 255, 0.5); /* Shadow on focus */
+}
+
+/* Handles the case of list of elements with dickanme, name, role and delete button
+ For list of chats and list of users in chat */
+.dynamic-block-list {
+    margin-top:12px;
+    display: flex;
+    flex-direction: column;
+    background-color: white;
+    border: 1px solid #c7c7c7;
+    align-items: stretch;
+    padding-left: 8px;
+    padding-right: 8px;
+    padding-bottom: 8px;
+}
+
+.dynamic-block-list-el {
+    margin-top: 8px;
+    background-color: white;
+    border: 1px solid #c7c7c7;
+    color: black;
+    padding: 5px;
+}
+
+.button-add{
+    width: 50px;
+    cursor: pointer;
+}
+
+.dynamic-block-list-el-container{
+    width: 100%;
+}
+
+.entity-nickname-txt {
+    font-weight: bold;
+    color: black;
+    text-decoration: none;
+    font-size: 1.5em;
+}
+
+.entity-reg-field-txt {
+    /* For name and role */
+    color: #242424;
+    text-decoration: none;
+    font-size: 1.5em;
+}
--- a/assets/css/debug.css
+++ b/assets/css/debug.css
@ -0,0 +1,8 @@
+.chat-debug-rect{
+    width: 100%;
+    position: absolute;
+    left: 0;
+    opacity: 0.3;
+    height: 3px;
+    z-index: 2;
+}
--- a/assets/css/edit-profile.css
+++ b/assets/css/edit-profile.css
@ -0,0 +1,23 @@
+/* The morbid thing */
+table.logins-input-table {
+    width: 100%;
+    border-collapse: collapse; /* Combine borders */
+}
+.logins-input-td1, .logins-input-td2 {
+    border: none;
+}
+.logins-input-td1 {
+    text-align: left;
+    padding-right: 5px;
+    white-space: nowrap; /* Prevent text wrap, keeping it in one line */
+    overflow: hidden; /* Hide overflow content */
+    text-overflow: ellipsis; /* Show ellipsis for overflowing text */
+}
+.logins-input-td2 {
+    width: 100%;
+}
+
+#input-change-bio{
+    margin-top: 5px;
+    margin-bottom: 5px;
+}
--- a/assets/css/list-rooms.css
+++ b/assets/css/list-rooms.css
@ -1,253 +1,166 @@
+/* Общие стили */
 body {
-    font-family: Arial, sans-serif;
-    background-color: #f0f0f0;
+    font-family: 'Roboto', sans-serif;
+    background-color: #f7f9fc;
+    color: #333;
    margin: 0;
    padding: 0;
+    box-sizing: border-box;
 }

-.container {
-    max-width: 800px;
-    margin: 30px auto;
-    padding: 20px;
+/* Панель навигации */
+.panel {
    background-color: #007bff;
-    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
-    border-radius: 8px;
-}
-
-h1 {
-    text-align: center;
-    color: #fff;
-}
-
-.room-list {
-    list-style-type: none;
-    padding: 0;
-}
-
-.room-item {
+    padding: 10px;
+    color: white;
    display: flex;
-    justify-content: space-between;
    align-items: center;
-    padding: 15px;
-    margin: 10px 0;
-    background-color: #fafafa;
-    border: 1px solid #ddd;
-    border-radius: 5px;
-    transition: background-color 0.3s ease;
 }

-.room-item:hover {
-    background-color: #eaeaea;
+.panel-thing {
+    margin-right: 20px;
+    text-decoration: none;
+    color: white;
 }

-.room-name {
+.panel-header-txt {
    font-size: 18px;
-    color: #555;
+    font-weight: bold;
 }

-.join-button {
-    padding: 10px 15px;
-    font-size: 16px;
-    color: white;
-    background-color: #007bff;
-    border: none;
-    border-radius: 5px;
-    cursor: pointer;
-    transition: background-color 0.3s ease;
-}
-.add-members-header {
-    text-align: center;
-}
-.add-members-footer {
-    text-align: right;
-    margin-top: 5px;
-}
-.add-members-button {
-    background-color: #218838;
-    padding: 10px 15px;
-    font-size: 16px;
-    color: white;
-    border: none;
-    border-radius: 5px;
-    position: absolute;
-    margin-left: 502px;
-    cursor: pointer;
-    transition: background-color 0.3s ease;
-}
-.add-members-button:hover {
-    background-color: #006509
-}
-.delete-chat-button {
-    background-color: #dc2e45;
-    border: none;
-    color: white;
-    font-size: 16px;
-    border-radius: 5px;
-    position: absolute;
-    cursor: pointer;
-    transition: background-color 0.3s ease;
-    padding: 10px 15px;
-    margin-left: 380px;
-}
-.delete-chat-button:hover {
-    background-color: #881527;
-}
-#newMemberLogin {
-    width: 93.5%;
-    padding: 10px;
-    margin: 10px 0;
-    border: 1px solid #ddd;
-    border-radius: 5px;
-}
-.add-member-button {
-    background-color: #218838;
-    padding: 10px 15px;
-    font-size: 16px;
-    color: white;
-    border: none;
-    border-radius: 5px;
-    position: absolute;
-    margin-left: -105px;
-    cursor: pointer;
-    transition: background-color 0.3s ease;
-}
-.join-button:hover {
-    background-color: #0056b3;
-}
-
-.modal {
-    display: none;
-    position: fixed;
-    z-index: 1;
-    left: 0;
-    top: 0;
-    width: 100%;
-    height: 100%;
-    overflow: auto;
-    background-color: rgba(0, 0, 0, 0.4);
-}
-
-.modal-content {
-    background-color: #fff;
-    margin: 10% auto;
+/* Стили динамических блоков */
+.dynamic-block-list {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
    padding: 20px;
-    border: 1px solid #888;
-    width: 80%;
-    max-width: 400px;
-    border-radius: 10px;
-    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
 }

-.modal-header, .modal-footer {
-    padding: 10px;
-    color: #333;
-}
-
-.modal-header {
-    text-align: center;
-}
-
-.modal-footer {
-    text-align: right;
-}
-
-.modal input {
-    width: 93.5%;
-    padding: 10px;
-    margin: 10px 0;
-    border: 1px solid #ddd;
-    border-radius: 5px;
-}
-
-.create-room-button {
-    display: block;
+.dynamic-block-list-el-container {
    width: 100%;
-    padding: 10px;
-    font-size: 16px;
-    color: white;
-    background-color: #1609ab;
-    border: none;
-    border-radius: 5px;
-    cursor: pointer;
-    transition: background-color 0.3s ease;
+    max-width: 600px;
    margin-top: 20px;
 }

-.create-room-button:hover {
-    background-color: #218838;
+/* Кнопка добавления */
+.button-add {
+    width: 50px;
+    height: 50px;
+    cursor: pointer;
+    transition: transform 0.2s;
 }

-.overlay {
-    display: none;
-    position: fixed;
-    top: 0;
-    left: 0;
+.button-add:hover {
+    transform: scale(1.1);
+}
+
+/* Всплывающие окна */
+.popup-window {
+    background-color: white;
+    border-radius: 8px;
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
+    padding: 20px;
+    max-width: 500px;
+    margin: 0 auto;
+}
+
+.popup-window-msg {
+    font-size: 20px;
+    margin-bottom: 15px;
+    color: #333;
+}
+
+.popup-window-btn-yes, .popup-window-btn-no {
+    padding: 10px 20px;
+    border: none;
+    border-radius: 5px;
+    font-size: 16px;
+    cursor: pointer;
+}
+
+.popup-window-btn-yes {
+    background-color: #28a745;
+    color: white;
+    margin-right: 10px;
+}
+
+.popup-window-btn-no {
+    background-color: #dc3545;
+    color: white;
+}
+
+/* Таблица ввода */
+table.id-str-input-table {
    width: 100%;
-    height: 100%;
-    background-color: rgba(0, 0, 0, 0.5);
-    justify-content: center;
+    border-collapse: collapse;
+    margin-bottom: 20px;
+}
+
+.id-str-input-td1, .id-str-input-td2 {
+    border: none;
+    padding: 10px;
+}
+
+.id-str-input-td1 {
+    text-align: left;
+    padding-right: 10px;
+    font-weight: bold;
+    color: #555;
+    white-space: nowrap;
+}
+
+.id-str-input-td2 {
+    width: 100%;
+}
+
+.one-line-input {
+    width: 100%;
+    padding: 8px 12px;
+    border: 1px solid #ccc;
+    border-radius: 4px;
+    font-size: 14px;
+}
+
+/* Стили комнат */
+.CL-my-chat-box {
+    display: flex;
+    flex-direction: row;
+    position: relative;
+    padding: 10px;
+    background-color: #e0f7fa;
+    border-radius: 8px;
+    margin-bottom: 10px;
    align-items: center;
-    z-index: 1000;
+    min-height: 40px;
+    width: 100%;
 }

-.overlay .add-members {
-    background-color: white;
-    padding: 30px;
-    border-radius: 10px;
-    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
-    max-width: 400px;
-    width: 100%;
-    height: 18%;
-    position: fixed;
+/* Текст внутри блока комнаты */
+.CL-my-chat-box-nickname, .CL-my-chat-box-name, .CL-my-chat-box-my-role {
+    margin-left: 8px;
+    justify-self: flex-start;
 }
-.overlay .delete-chat {
-    background-color: white;
-    padding: 30px;
-    border-radius: 10px;
-    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
-    max-width: 400px;
-    width: 100%;
-    height: 18%;
-    position: fixed;
-}
-.delete-close {
-    color: #aaa;
-    float: right;
-    font-size: 28px;
-    font-weight: bold;
-    cursor: pointer;
-}
-.delete-chat-header {
-    text-align: center;
-}
-.confirm {
-    background-color: #1609ab;
-    padding: 20px 70px;
-    font-size: 16px;
-    color: white;
-    border: none;
-    border-radius: 5px;
+
+/* Крестик в правом верхнем углу */
+.CL-my-chat-box-leave-btn {
    position: absolute;
-    margin-left: 20px;
+    top: 8px;
+    right: 8px;
+    width: 16px;
+    height: 16px;
+    background: url('/assets/img/close.svg') no-repeat center;
+    background-size: cover;
    cursor: pointer;
-    transition: background-color 0.3s ease;
-}
-.cancel {
-    background-color: #1609ab;
-    padding: 20px 70px;
-    font-size: 16px;
-    color: white;
    border: none;
-    border-radius: 5px;
-    position: absolute;
-    margin-left: 220px;
-    cursor: pointer;
-    transition: background-color 0.3s ease;
+    transition: transform 0.2s;
 }
-.close {
-    color: #aaa;
-    float: right;
-    font-size: 28px;
-    font-weight: bold;
-    cursor: pointer;
+
+.CL-my-chat-box-leave-btn:hover {
+    transform: scale(1.2);
+}
+
+/* Дизайн списка комнат остается таким же */
+#CL-bacbe {
+    margin-top: 6px;
+    margin-bottom: 4px;
 }
--- a/assets/css/login.css
+++ b/assets/css/login.css
@ -1,77 +1,46 @@
-dy {
-    font-family: Arial, sans-serif;
+body {
    display: flex;
+    flex-direction: column;
    justify-content: center;
    align-items: center;
-    height: 100vh;
+    height: 100vh; /* Full viewport height */
    margin: 0;
-    background-color: #e5e5e5;
 }

 .form-container {
-    width: 100%;
-    max-width: 400px;
-    background-color: white;
-    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
-    display: flex;
-    flex-direction: column;
-    border-radius: 8px;
-    padding: 40px;
-    text-align: center;
+    background-color: #ffffff;
+    padding: 20px;
+    border-radius: 10px;
+    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
 }

-h1 {
-    margin-bottom: 20px;
-    color: #2F4F4F;
+@media (orientation: landscape) {
+    .form-container{
+        width: 50%;
+    }
 }

-input {
-    width: 100%;
-    background: #f7f7f7;
-    font-size: 16px;
-    padding: 10px;
-    border: 1px solid #ddd;
-    border-radius: 20px;
-    margin-bottom: 15px;
-    outline: none;
+@media (orientation: portrait){
+    .form-container{
+        width: 85%;
+    }
 }

-button {
+
+/* The morbid thing */
+table.logins-input-table {
    width: 100%;
-    padding: 15px;
+    border-collapse: collapse; /* Combine borders */
+}
+.logins-input-td1, .logins-input-td2 {
    border: none;
-    background-color: #0088cc;
-    color: white;
-    border-radius: 20px;
-    cursor: pointer;
-    outline: none;
-    font-size: 16px;
-    font-weight: bold;
-    transition: background-color 0.3s;
 }
-
-button:hover,
-button:focus-visible {
-    background-color: #007bb5;
+.logins-input-td1 {
+    padding-right: 5px;
+    white-space: nowrap; /* Prevent text wrap, keeping it in one line */
+    overflow: hidden; /* Hide overflow content */
+    text-overflow: ellipsis; /* Show ellipsis for overflowing text */
 }
-
-.hide-cursor::placeholder {
-    color: #000;
-}
-
-.hide-cursor {
-    caret-color: transparent;
-}
-
-.no-select {
-    -webkit-user-select: none; /* Для Safari */
-    -moz-user-select: none;    /* Для Firefox */
-    user-select: none;         /* Для всех остальных браузеров */
-}
-
-div {
-    color: red;
-    font-size: 15px;
-    margin-top: 10px;
-    display: none;
+.logins-input-td2 {
+    width: 100%;
 }
--- a/assets/css/profile.css
+++ b/assets/css/profile.css
@ -1,129 +0,0 @@
-body {
-    display: flex;
-    justify-content: center;
-    align-items: center;
-    height: 90vh;
-    background-color: #e5e5e5;
-    font-family: Arial, sans-serif;
-}
-.main-container {
-    width: 700px;
-    height: 700px;
-    border-color: antiquewhite;
-    background-color: white;
-    display: flex;
-    flex-direction: column;
-    align-items: center;
-    justify-content: center;
-    text-align: center;
-    border-radius: 10px;
-}
-.profile-header {
-    width: 700px;
-    height: 160px;
-    border-color: antiquewhite;
-    background-color: #0088cc;
-    border-radius: 10px;
-    position: relative;
-}
-.return {
-    background-color: #f0f0f0;
-    cursor: pointer;
-    width: 100px;
-    text-decoration: none;
-    color: black;
-    display: flex;
-    justify-content: center;
-    align-items: center;
-    height: 30px;
-    border-radius: 10px;
-    position: absolute;
-    left: 20px;
-    top: 25px;
-    border: none;
-}
-.return:hover{
-    text-decoration: underline;
-    color: #0088cc;
-}
-form {
-    display: flex;
-    flex-direction: column;
-    align-items: center;
-}
-
-.columns {
-    display: flex;
-    justify-content: center;
-    align-items: flex-start;
-    gap: 20px;
-    margin-bottom: 20px;
-}
-
-.column {
-    display: flex;
-    flex-direction: column;
-    align-items: center;
-}
-.add {
-    width: 100px;
-    height: 40px;
-    border-width: 2px;
-    cursor: pointer;
-    font-size: 16px;
-    border-radius: 10px;
-}
-.add:hover {
-    background-color: #007bb5;
-}
-.image-button:hover {
-    opacity: 0.8;
-}
-
-.image-button:active {
-    transform: scale(0.95);
-}
-#login {
-    font-family: Arial, sans-serif;
-    font-size:16px;
-    width: 150px;
-    height: 20px;
-    border-radius: 10px;
-    border-color: #2F4F4F;
-}
-#username {
-    font-family: Arial, sans-serif;
-    font-size:16px;
-    width: 150px;
-    height: 20px;
-    margin-bottom: 1px;
-    margin-top: 50px;
-    border-radius: 10px;
-    border-color: #2F4F4F;
-}
-#bio {
-    height: 150px;
-    width: 500px;
-    padding: 10px;
-    box-sizing: border-box;
-    font-family: Arial, sans-serif;
-    font-size:14px;
-    text-align: left;
-    vertical-align: top;
-    margin-bottom: 5px;
-}
-.save {
-    cursor:pointer;
-    font-size: 16px;
-    border-radius: 15px;
-    border-color: #2F4F4F;
-    height: 40px;
-    width: 150px;
-}
-.save:hover {
-    background-color: #007bb5;
-}
-.avatar {
-    border-radius: 50%;
-    object-fit: cover;
-}
--- a/assets/css/register.css
+++ b/assets/css/register.css
@ -0,0 +1,45 @@
+body {
+    display: flex;
+    flex-direction: column;
+    justify-content: center;
+    align-items: center;
+    height: 100vh; /* Full viewport height */
+    margin: 0;
+}
+
+.form-container {
+    background-color: #ffffff;
+    padding: 20px;
+    border-radius: 10px;
+    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
+}
+
+@media (orientation: landscape) {
+    .form-container{
+        width: 60%;
+    }
+}
+
+@media (orientation: portrait){
+    .form-container{
+        width: 90%;
+    }
+}
+
+/* The morbid thing */
+table.reg-input-table {
+    width: 100%;
+    border-collapse: collapse; /* Combine borders */
+}
+.reg-input-td1, .reg-input-td2 {
+    border: none;
+}
+.reg-input-td1 {
+    padding-right: 5px;
+    white-space: nowrap; /* Prevent text wrap, keeping it in one line */
+    overflow: hidden; /* Hide overflow content */
+    text-overflow: ellipsis; /* Show ellipsis for overflowing text */
+}
+.reg-input-td2 {
+    width: 100%;
+}
--- a/assets/css/registration.css
+++ b/assets/css/registration.css
@ -1,77 +0,0 @@
-dy {
-    font-family: Arial, sans-serif;
-    display: flex;
-    justify-content: center;
-    align-items: center;
-    height: 100vh;
-    margin: 0;
-    background-color: #e5e5e5;
-}
-
-.form-container {
-    width: 100%;
-    max-width: 400px;
-    background-color: white;
-    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
-    display: flex;
-    flex-direction: column;
-    border-radius: 8px;
-    padding: 40px;
-    text-align: center;
-}
-
-h1 {
-    margin-bottom: 20px;
-    color: #2F4F4F;
-}
-
-input {
-    width: 100%;
-    background: #f7f7f7;
-    font-size: 16px;
-    padding: 10px;
-    border: 1px solid #ddd;
-    border-radius: 20px;
-    margin-bottom: 15px;
-    outline: none;
-}
-
-button {
-    width: 100%;
-    padding: 15px;
-    border: none;
-    background-color: #0088cc;
-    color: white;
-    border-radius: 20px;
-    cursor: pointer;
-    outline: none;
-    font-size: 16px;
-    font-weight: bold;
-    transition: background-color 0.3s;
-}
-
-button:hover,
-button:focus-visible {
-    background-color: #007bb5;
-}
-
-.hide-cursor::placeholder {
-    color: #000;
-}
-
-.hide-cursor {
-    caret-color: transparent;
-}
-
-.no-select {
-    -webkit-user-select: none; /* Для Safari */
-    -moz-user-select: none;    /* Для Firefox */
-    user-select: none;         /* Для всех остальных браузеров */
-}
-
-div {
-    color: red;
-    font-size: 15px;
-    margin-top: 10px;
-    display: none;
-}
--- a/assets/gif/loading.gif
+++ b/assets/gif/loading.gif
--- a/assets/img/add.svg
+++ b/assets/img/add.svg
@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   width="128"
+   height="128"
+   viewBox="0 0 3.84 3.84"
+   fill="none"
+   version="1.1"
+   id="svg1"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs1" />
+  <path
+     fill-rule="evenodd"
+     clip-rule="evenodd"
+     d="m 1.9142674,3.7842088 c -0.8814997,0 -1.32224859,0 -1.59609402,-0.2738529 C 0.04432607,3.2365216 0.04432607,2.7957577 0.04432607,1.9142674 c 0,-0.8814997 0,-1.32224859 0.27384731,-1.59609402 C 0.59201881,0.04432607 1.0327677,0.04432607 1.9142674,0.04432607 c 0.8814903,0 1.3222542,0 1.5960885,0.27384731 0.2738529,0.27384543 0.2738529,0.71459432 0.2738529,1.59609402 0,0.8814903 0,1.3222542 -0.2738529,1.5960885 C 3.2365216,3.7842088 2.7957577,3.7842088 1.9142674,3.7842088 Z m 0,-2.5711694 c 0.077453,0 0.1402457,0.062791 0.1402457,0.1402456 v 0.4207368 h 0.4207367 c 0.077453,0 0.1402456,0.062793 0.1402456,0.1402456 0,0.077453 -0.062793,0.1402457 -0.1402456,0.1402457 H 2.0545131 v 0.4207367 c 0,0.077453 -0.062793,0.1402456 -0.1402457,0.1402456 -0.077453,0 -0.1402456,-0.062793 -0.1402456,-0.1402456 V 2.0545131 H 1.353285 c -0.077455,0 -0.1402456,-0.062793 -0.1402456,-0.1402457 0,-0.077453 0.062791,-0.1402456 0.1402456,-0.1402456 H 1.7740218 V 1.353285 c 0,-0.077455 0.062793,-0.1402456 0.1402456,-0.1402456 z"
+     fill="#1c274c"
+     id="path1"
+     style="stroke-width:0.186994" />
+</svg>
--- a/assets/img/broken-clavicle.png
+++ b/assets/img/broken-clavicle.png
--- a/assets/img/clavicle-transparent.png
+++ b/assets/img/clavicle-transparent.png
--- a/assets/img/delete.svg
+++ b/assets/img/delete.svg
@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   fill="#000000"
+   width="128"
+   height="128"
+   viewBox="-1.7 0 3.264 3.264"
+   class="cf-icon-svg"
+   version="1.1"
+   id="svg1"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs1" />
+  <path
+     d="M 1.4376583,1.6137431 A 1.5211864,1.5211864 0 1 1 -0.08352807,0.09255663 1.5209944,1.5209944 0 0 1 1.4376583,1.6137431 Z m -1.30733258,0.00192 0.58257383,-0.582766 A 0.15217629,0.15217629 0 0 0 0.49770077,0.81769971 L -0.08468094,1.4004657 -0.66763909,0.81769971 A 0.15217629,0.15217629 0 0 0 -0.88283792,1.0328985 l 0.5829582,0.5827659 -0.58276597,0.5827661 a 0.15217629,0.15217629 0 0 0 0.21519874,0.2150066 l 0.58257388,-0.582766 0.58276608,0.582766 A 0.15217629,0.15217629 0 0 0 0.71309179,2.1982382 Z"
+     id="path1"
+     style="display:inline;fill:#ff0000;fill-opacity:1;stroke-width:0.192143" />
+</svg>
--- a/assets/img/empty_avatar.png
+++ b/assets/img/empty_avatar.png
--- a/assets/img/exit.png
+++ b/assets/img/exit.png
--- a/assets/img/favicon.png
+++ b/assets/img/favicon.png
--- a/assets/img/link.svg
+++ b/assets/img/link.svg
@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   fill="#000000"
+   version="1.1"
+   id="Capa_1"
+   width="128"
+   height="128"
+   viewBox="0 0 70.75936 70.75936"
+   xml:space="preserve"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg"><defs
+   id="defs3" />
+<g
+   id="g3"
+   style="fill:#c8f5ff;fill-opacity:1;stroke:#6adeef;stroke-width:8.62702;stroke-dasharray:none;stroke-opacity:1"
+   transform="matrix(0.1490509,0,0,0.14948634,3.4471925,2.5065977)">
+	<g
+   id="g2"
+   style="fill:#c8f5ff;fill-opacity:1;stroke:#6adeef;stroke-width:8.62702;stroke-dasharray:none;stroke-opacity:1">
+		<path
+   d="m 409.657,32.474 c -43.146,-43.146 -113.832,-43.146 -156.978,0 l -84.763,84.762 c 29.07,-8.262 60.589,-6.12 88.129,6.732 l 44.063,-44.064 c 17.136,-17.136 44.982,-17.136 62.118,0 17.136,17.136 17.136,44.982 0,62.118 l -55.386,55.386 -36.414,36.414 c -17.136,17.136 -44.982,17.136 -62.119,0 l -47.43,47.43 c 11.016,11.017 23.868,19.278 37.332,24.48 36.415,14.382 78.643,8.874 110.467,-16.219 3.06,-2.447 6.426,-5.201 9.18,-8.262 l 57.222,-57.222 34.578,-34.578 c 43.453,-43.145 43.453,-113.525 10e-4,-156.977 z"
+   id="path1"
+   style="fill:#c8f5ff;fill-opacity:1;stroke:#6adeef;stroke-width:8.62702;stroke-dasharray:none;stroke-opacity:1" />
+		<path
+   d="m 184.135,320.114 -42.228,42.228 c -17.136,17.137 -44.982,17.137 -62.118,0 -17.136,-17.136 -17.136,-44.981 0,-62.118 l 91.8,-91.799 c 17.136,-17.136 44.982,-17.136 62.119,0 l 47.43,-47.43 c -11.016,-11.016 -23.868,-19.278 -37.332,-24.48 -38.25,-15.3 -83.232,-8.262 -115.362,20.502 -1.53,1.224 -3.06,2.754 -4.284,3.978 l -91.8,91.799 c -43.146,43.146 -43.146,113.832 0,156.979 43.146,43.146 113.832,43.146 156.978,0 l 82.927,-83.845 c -42.23,9.791 -52.022,8.568 -88.13,-5.814 z"
+   id="path2"
+   style="fill:#c8f5ff;fill-opacity:1;stroke:#6adeef;stroke-width:8.62702;stroke-dasharray:none;stroke-opacity:1" />
+	</g>
+</g>
+</svg>
--- a/assets/img/list-rooms.svg
+++ b/assets/img/list-rooms.svg
@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+
+<svg
+   width="127.99999"
+   height="127.99999"
+   viewBox="0 0 33.866664 33.866664"
+   version="1.1"
+   id="svg1"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs1" />
+  <g
+     id="layer1">
+    <path
+       style="fill:#000000;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0;stroke-linejoin:round;stroke-dasharray:none;stroke-opacity:1"
+       d="M 6.2911505,3.4844006 V 6.6404405 H 3.0362141 V 28.776832 h 4.7418555 v 2.929792 H 0.58956039 V 3.438992 Z"
+       id="path63" />
+    <path
+       style="fill:#000000;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0;stroke-linejoin:round;stroke-dasharray:none;stroke-opacity:1"
+       d="m 27.557741,31.386555 v -3.15604 h 3.254937 V 6.0941238 h -4.741856 v -2.929792 h 7.188509 V 31.431963 Z"
+       id="path63-2" />
+    <path
+       id="rect63"
+       style="fill:#fdffff;fill-opacity:1;fill-rule:nonzero;stroke:#e1e1e1;stroke-width:0.529167;stroke-linejoin:round;stroke-dasharray:none;stroke-opacity:1"
+       d="m 8.7183307,8.3901854 c -2.467802,0 -4.4545084,1.9867066 -4.4545084,4.4545086 v 5.357812 c 0,2.467802 1.9867064,4.454509 4.4545084,4.454509 0,0 6.6668103,0 10.2365843,0 1.184667,0 1.8523,1.573101 2.973462,1.946651 1.827305,0.608823 5.758305,0.474906 5.758305,0.474906 0,0 -1.204106,-0.984163 -2.336589,-2.042039 -0.307888,-0.287603 -0.182877,-1.488944 0.134028,-1.896921 0.674916,-0.868872 0.918918,-1.680982 0.918918,-2.937106 v -5.357812 c 0,-2.467802 -1.986706,-4.4545086 -4.454508,-4.4545086 z" />
+  </g>
+</svg>
--- a/assets/img/return.svg
+++ b/assets/img/return.svg
@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+
+<svg
+   width="128"
+   height="127.99999"
+   viewBox="0 0 33.866667 33.866664"
+   version="1.1"
+   id="svg1"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs1" />
+  <g
+     id="layer1">
+    <path
+       style="fill:#000000;fill-opacity:1;stroke:#ffffff;stroke-width:0.294159;stroke-linejoin:round;stroke-opacity:1"
+       d="m 0.65443061,23.377766 10.20536539,-7.351693 -0.06427,3.749871 c 0,0 6.384296,0.115304 9.607291,0.115304 1.824632,0 4.010317,0.117998 5.361398,-1.065432 0.797635,-0.698657 1.041209,-1.943308 0.954461,-2.97946 -0.118465,-1.414973 -0.417733,-2.830021 -1.492491,-3.799298 -0.964892,-0.870193 -2.338758,-1.449022 -3.659301,-1.465666 -1.347581,-0.01698 -4.311633,-0.01476 -4.311633,-0.01476 l 0.02678,-6.0468658 c 0,0 5.209174,-0.1269759 7.836958,-0.1269759 2.090574,0 3.730335,0.2813604 5.374446,1.5274776 1.165995,0.8837399 2.874757,2.1212447 2.874757,3.8971142 0,3.5737799 -0.03341,6.8479459 -0.03341,10.6502529 0,3.155641 -2.159421,4.126978 -3.036427,4.888332 -1.783594,1.548393 -4.069763,1.553329 -6.468859,1.553329 -4.709142,0 -13.295569,0 -13.295569,0 v 3.244296 z"
+       id="path1" />
+  </g>
+</svg>
--- a/assets/img/settings-iron.svg
+++ b/assets/img/settings-iron.svg
@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+
+<svg
+   width="127.99999"
+   height="127.99999"
+   viewBox="0 0 33.866664 33.866664"
+   version="1.1"
+   id="svg1"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs1" />
+  <g
+     id="layer1">
+    <path
+       id="path11"
+       style="fill:#e6e6e6;fill-opacity:1;stroke:#b3b3b3;stroke-width:0.792427;stroke-linejoin:round;stroke-dasharray:none;stroke-opacity:1"
+       d="m 9.8376422,3.4995279 c -0.413454,0.04422 -0.9249931,0.2733392 -1.5859497,0.7720459 -2.15303,1.6245101 -1.0645387,2.7213368 -0.2780192,3.6576578 0.9643744,1.1480481 0.5272069,2.4297214 -0.2444295,3.5413854 -1.0846469,1.562605 -1.8094411,2.689497 -3.1812011,2.618445 -1.7185528,-0.08902 -3.2061983,0.950419 -3.1817179,2.618962 0.020151,1.373449 0.960489,2.763844 2.9987833,2.826184 1.3729571,0.04199 2.35275,1.613748 2.9993001,2.825667 0.6465497,1.211919 1.3490594,3.417259 0.6769613,4.064868 -0.989134,0.953094 -1.312826,2.263816 0.6769612,4.064868 1.2829023,1.161218 2.6693573,0.639536 3.7666953,-0.946195 1.179214,-1.70405 2.337505,-1.523233 4.127396,-1.422652 1.371435,0.07707 2.886284,-0.325958 3.858679,1.446423 0.660704,1.204262 1.722209,2.911554 3.85868,1.445906 1.132687,-0.77704 2.468135,-2.085182 0.947745,-4.010091 -0.610564,-0.773014 -0.532201,-2.186383 0.948263,-4.010607 1.255317,-1.546798 1.98091,-2.751433 3.181201,-2.618962 1.365308,0.150686 2.84107,-0.224934 3.181718,-2.618445 0.366273,-2.57357 -1.941907,-2.695322 -3.312976,-2.778641 C 28.1324,14.906856 28.128014,13.488893 26.590624,12.103137 25.053235,10.717381 25.023658,9.341954 26.190649,8.2930337 27.35764,7.2441129 27.633021,6.3291961 25.719877,4.5222045 24.596532,3.461188 23.254965,3.1719841 21.630204,4.9759236 20.911774,5.7735833 19.336054,7.1894888 17.196366,7.1086099 15.002057,7.0256665 13.838949,7.4611865 12.285555,5.8053303 11.434493,4.8981315 11.078004,3.3668691 9.8376422,3.4995279 Z m 6.7892498,6.5215661 a 7.4172139,7.0961218 0 0 1 7.417118,7.096207 7.4172139,7.0961218 0 0 1 -7.417118,7.096208 7.4172139,7.0961218 0 0 1 -7.4171184,-7.096208 7.4172139,7.0961218 0 0 1 7.4171184,-7.096207 z" />
+  </g>
+</svg>
--- a/assets/img/user.svg
+++ b/assets/img/user.svg
@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+
+<svg
+   width="127.99999"
+   height="127.99999"
+   viewBox="0 0 33.866664 33.866664"
+   version="1.1"
+   id="svg1"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs1" />
+  <g
+     id="layer1">
+    <path
+       style="fill:#000080;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:1.465;stroke-linejoin:round;stroke-dasharray:none"
+       d="M 9.3745975,32.81176 H 25.632941 c 0,0 0.08996,-6.044498 -0.03778,-10.988966 0.0321,-3.524476 -1.327193,-6.290541 -8.363226,-6.155275 -7.036034,0.135265 -7.7455423,2.805955 -7.7693511,5.331649 -0.034594,3.669826 -0.087981,11.812592 -0.087981,11.812592 z"
+       id="path7" />
+    <path
+       id="path8"
+       style="fill:#000080;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.965;stroke-linejoin:round;stroke-dasharray:none"
+       d="M 17.963761,1.3260172 A 11.612947,6.192831 0 0 0 6.3510334,7.5189208 11.612947,6.192831 0 0 0 17.963761,13.711824 11.612947,6.192831 0 0 0 29.576489,7.5189208 11.612947,6.192831 0 0 0 17.963761,1.3260172 Z m -3.947046,2.876827 a 1.5186517,3.4351659 0 0 1 1.518771,3.4349323 1.5186517,3.4351659 0 0 1 -1.518771,3.4354495 1.5186517,3.4351659 0 0 1 -1.518253,-3.4354495 1.5186517,3.4351659 0 0 1 1.518253,-3.4349323 z m 6.47299,0.2160074 a 1.5186517,3.4351659 0 0 1 1.518254,3.4349324 1.5186517,3.4351659 0 0 1 -1.518254,3.435449 1.5186517,3.4351659 0 0 1 -1.51877,-3.435449 1.5186517,3.4351659 0 0 1 1.51877,-3.4349324 z" />
+  </g>
+</svg>
--- a/assets/js/all_apis.js
+++ b/assets/js/all_apis.js
@ -1,171 +0,0 @@
-async function getChatEvents(chatId, localHistoryId) {
-    const response = await fetch('/api/chatPollEvents', {
-        method: 'POST',
-        headers: {
-            'Content-Type': 'application/json'
-        },
-        body: JSON.stringify({
-            chatUpdReq: {
-                chatId: chatId,
-                LocalHistoryId: localHistoryId
-            }
-        })
-    });
-    const data = await response.json();
-    return data.chatUpdResp;
-}
-
-
-async function getChatListEvents(localHistoryId) {
-    const response = await fetch('/api/chatListPollEvents', {
-        method: 'POST',
-        headers: {
-            'Content-Type': 'application/json'
-        },
-        body: JSON.stringify({
-            chatListUpdReq: {
-                LocalHistoryId: localHistoryId
-            }
-        })
-    });
-    const data = await response.json();
-    return data.chatListUpdResp;
-}
-
-
-async function getMessageNeighbours(chatId, msgId, direction, amount, localHistoryId) {
-    const response = await fetch('/api/getMessageNeighbours', {
-        method: 'POST',
-        headers: {
-            'Content-Type': 'application/json'
-        },
-        body: JSON.stringify({
-            chatUpdReq: {
-                chatId: chatId,
-                LocalHistoryId: localHistoryId
-            },
-            msgId: msgId,
-            direction: direction,
-            amount: amount
-        })
-    });
-    const data = await response.json();
-    return data.chatUpdResp;
-}
-
-
-async function sendMessage(chatId, localHistoryId, text) {
-    const response = await fetch('/api/sendMessage', {
-        method: 'POST',
-        headers: {
-            'Content-Type': 'application/json'
-        },
-        body: JSON.stringify({
-            chatUpdReq: {
-                chatId: chatId,
-                LocalHistoryId: localHistoryId
-            },
-            content: {
-                text: text
-            }
-        })
-    });
-    const data = await response.json();
-    return data.chatUpdResp;
-}
-
-
-async function deleteMessage(chatId, localHistoryId, messageId) {
-    const response = await fetch('/api/deleteMessage', {
-        method: 'POST',
-        headers: {
-            'Content-Type': 'application/json'
-        },
-        body: JSON.stringify({
-            chatUpdReq: {
-                chatId: chatId,
-                LocalHistoryId: localHistoryId
-            },
-            id: messageId
-        })
-    });
-    const data = await response.json();
-    return data.chatUpdResp;
-}
-
-
-async function addMemberToChat(chatId, localHistoryId, nickname) {
-    const response = await fetch('/api/addMemberToChat', {
-        method: 'POST',
-        headers: {
-            'Content-Type': 'application/json'
-        },
-        body: JSON.stringify({
-            chatUpdReq: {
-                chatId: chatId,
-                LocalHistoryId: localHistoryId
-            },
-            nickname: nickname
-        })
-    });
-    const data = await response.json();
-    return data.chatUpdResp;
-}
-
-
-async function removeMemberFromChat(chatId, localHistoryId, userId) {
-    const response = await fetch('/api/removeMemberFromChat', {
-        method: 'POST',
-        headers: {
-            'Content-Type': 'application/json'
-        },
-        body: JSON.stringify({
-            chatUpdReq: {
-                chatId: chatId,
-                LocalHistoryId: localHistoryId
-            },
-            userId: userId
-        })
-    });
-    const data = await response.json();
-    return data.chatUpdResp;
-}
-
-
-async function createChat(localHistoryId, name, nickname) {
-    const response = await fetch('/api/createChat', {
-        method: 'POST',
-        headers: {
-            'Content-Type': 'application/json'
-        },
-        body: JSON.stringify({
-            chatListUpdReq: {
-                LocalHistoryId: localHistoryId
-            },
-            content: {
-                name: name,
-                nickname: nickname
-            }
-        })
-    });
-    const data = await response.json();
-    return data.chatListUpdResp;
-}
-
-
-async function leaveChat(localHistoryId, chatId) {
-    const response = await fetch('/api/leaveChat', {
-        method: 'POST',
-        headers: {
-            'Content-Type': 'application/json'
-        },
-        body: JSON.stringify({
-            chatListUpdReq: {
-                LocalHistoryId: localHistoryId
-            },
-            chatId: chatId
-        })
-    });
-    const data = await response.json();
-    return data.chatListUpdResp;
-}
--- a/assets/js/chat-members.js
+++ b/assets/js/chat-members.js
@ -0,0 +1,188 @@
+let LocalHistoryId = 0;
+
+function genSentBase(){
+    return {
+        'chatUpdReq': {
+            'LocalHistoryId': LocalHistoryId,
+            'chatId': openedchat.id
+        }
+    };
+}
+
+let members = new Map();
+let memberBoxes = new Map();
+let myRoleHere = null;  // Dung local state updates should be updated first
+
+let userDeletionWinStoredUId = -1;
+
+function shouldShowDeleteButton(memberSt){
+    return userinfo.uid !== memberSt.userId && myRoleHere === userChatRoleAdmin && memberSt.roleHere !== userChatRoleDeleted;
+}
+
+function updateBoxWithSt(box, memberSt){
+    let ID = memberSt.userId;
+    let roleP = box.querySelector(".CM-member-box-role");
+    roleP.innerText = memberSt.roleHere;
+    box.style.backgroundColor = roleToColor(memberSt.roleHere);
+    box.querySelector(".CM-member-box-leave-btn").style.display =
+        (shouldShowDeleteButton(memberSt) ? "block" : "none");
+}
+
+function convertMemberStToBox(memberSt){
+    let ID = memberSt.userId;
+    let userProfileURI = "/user/" + memberSt.nickname;
+
+    let box = document.createElement("div");
+    box.className = "dynamic-block-list-el CM-member-box";
+    box.style.backgroundColor = roleToColor(memberSt.roleHere);
+
+    let inBoxNickname = document.createElement("a");
+    box.appendChild(inBoxNickname);
+    inBoxNickname.className = "entity-nickname-txt CM-member-box-nickname";
+    inBoxNickname.innerText = memberSt.nickname;
+    inBoxNickname.href = userProfileURI;
+
+    let inBoxName = document.createElement("a");
+    box.appendChild(inBoxName);
+    inBoxName.className = "entity-reg-field-txt CM-member-box-name";
+    inBoxName.innerText = memberSt.name;
+    inBoxName.href = userProfileURI;
+
+    let inBoxUserRoleHere = document.createElement("p");
+    box.appendChild(inBoxUserRoleHere);
+    inBoxUserRoleHere.className = "entity-reg-field-txt CM-member-box-role";
+    inBoxUserRoleHere.innerText = memberSt.roleHere;
+
+    let inBoxLeaveBtn = document.createElement("img");
+    box.appendChild(inBoxLeaveBtn);
+    inBoxLeaveBtn.className = "CM-member-box-leave-btn";
+    inBoxLeaveBtn.src = "/assets/img/delete.svg";
+    inBoxLeaveBtn.onclick = function (ev) {
+        if (ev.button !== 0)
+            return;
+        userDeletionWinStoredUId = ID;
+        document.getElementById("user-deletion-win-title").innerText =
+            pres['chat-members']['reask-kick-user-X'] + " " + memberSt.nickname + "?";
+        activatePopupWindowById("user-deletion-win");
+    };
+    box.querySelector(".CM-member-box-leave-btn").style.display =
+        (shouldShowDeleteButton(memberSt) ? "block" : "none");
+
+    return box;
+}
+
+function updateLocalStateFromChatUpdResp(chatUpdResp){
+    LocalHistoryId = chatUpdResp.HistoryId;
+    // If my role is updated, we need to update all the boes of already set users (kick button can appear and disappear)
+    let literalMemberList = document.getElementById("CM-list");
+    // We ignore messages and everything related to them. Dang, I really should add an argument to disable message lookup here
+    for (let memberSt of chatUpdResp.members){
+        console.log([memberSt, userinfo.uid, myRoleHere]);
+        if (memberSt.userId === userinfo.uid && myRoleHere !== memberSt.roleHere){
+            myRoleHere = memberSt.roleHere;
+            for (let [id, memberSt] of members){
+                let box = memberBoxes.get(id);
+                updateBoxWithSt(box, memberSt);
+            }
+            document.getElementById("CM-btn-add").style.display =
+                (memberSt.roleHere === userChatRoleAdmin ? "block" : "none");
+            console.log("DEBUG " + (memberSt.roleHere === userChatRoleAdmin ? "block" : "none"));
+            break;
+        }
+    }
+    for (let memberSt of chatUpdResp.members){
+        let id = memberSt.userId;
+        if (members.has(id)){
+            updateBoxWithSt(memberBoxes.get(id), memberSt);
+        } else {
+            if (memberSt.roleHere !== userChatRoleDeleted){
+                members.set(id, memberSt);
+                let box = convertMemberStToBox(memberSt);
+                memberBoxes.set(id, box);
+                literalMemberList.appendChild(box);
+            }
+        }
+    }
+}
+
+function updateLocalStateFromRecv(Recv){
+    updateLocalStateFromChatUpdResp(Recv.chatUpdResp);
+}
+
+function configureSummonUserInterface(){
+    document.getElementById("user-summoning-yes").onclick = function(ev ){
+        if (ev.button !==0)
+            return;
+        let nickname = String(document.getElementById("summoned-user-nickname").value);
+        let isReadOnly = document.getElementById("summoned-user-is-read-only").checked;
+        deactivateActivePopup();
+        let Sent = genSentBase();
+        Sent.nickname = nickname;
+        Sent.makeReadOnly = Boolean(isReadOnly);
+        apiRequest("addMemberToChat", Sent).
+        then((Recv) => {
+            updateLocalStateFromRecv(Recv);
+        }).catch((e) => {
+           console.log(e);
+           alert(pres['chat-members']["failed-summon-member"]);
+        });
+    };
+
+    document.getElementById("user-summoning-no").onclick = function (ev) {
+        if (ev.button !== 0)
+            return;
+        deactivateActivePopup();
+    };
+
+    document.getElementById("CM-btn-add").onclick = function(ev) {
+        if (ev.button !== 0)
+            return;
+        document.getElementById("summoned-user-nickname").value = "";
+        // read-only flag persists throughout user summoning sessions, and IT IS NOT A BUG
+        activatePopupWindowById("user-summoning-win");
+    };
+}
+
+/* Popup activation button is configured for each box separately */
+function configureKickUserInterfaceWinPart(){
+    document.getElementById("user-deletion-yes").onclick = function (ev){
+        if (ev.button !== 0)
+            return;
+        deactivateActivePopup();
+        if (userDeletionWinStoredUId < 0)
+            throw new Error("Karaul");
+        let Sent = genSentBase();
+        Sent.userId = userDeletionWinStoredUId;
+        apiRequest("removeMemberFromChat", Sent).
+        then((Recv) => {
+            updateLocalStateFromRecv(Recv);
+        }).catch((e) => {
+            console.log(e);
+            alert(pres['chat-members']["failed-kick-member"]);
+        });
+    }
+
+    document.getElementById("user-deletion-no").onclick = function (ev) {
+        if (ev.button !== 0)
+            return;
+        deactivateActivePopup();
+    };
+}
+
+__mainloopDelayMS = 5000;
+__guestMainloopPollerAction = function (){
+    console.log("Hello, world");
+    apiRequest("chatPollEvents", genSentBase()).
+    then((Recv) => {
+        console.log(Recv);
+        updateLocalStateFromRecv(Recv);
+    });
+}
+
+window.onload = function(){
+    console.log("Page loaded");
+    configureSummonUserInterface();
+    configureKickUserInterfaceWinPart();
+    updateLocalStateFromChatUpdResp(initial_chatUpdResp);
+    mainloopPoller();
+}
--- a/assets/js/chat.js
+++ b/assets/js/chat.js
@ -1,162 +1,477 @@
-let members = [
-    { username: 'Адель', nickname: 'cold_siemens52', avatar: 'https://sun9-59.userapi.com/impg/t8GhZ7FkynVifY1FQCnaf31tGprbV_rfauZzgg/fSq4lyc6V0U.jpg?size=1280x1280&quality=96&sign=e3c309a125cb570d2e18465eba65f940&type=album' },
-    { username: 'Антон', nickname: 'antyak_01', avatar: 'https://cdn.pixabay.com/photo/2015/10/05/22/37/blank-profile-picture-973460_1280.png' },
-    { username: 'Владимир', nickname: 'kkrkk2006', avatar: 'https://cdn.pixabay.com/photo/2015/10/05/22/37/blank-profile-picture-973460_1280.png' }
-];
-let currentHistoryId = 0;
-let currentChatID = null;
-function renderMembersList() {
-    const membersListBody = document.getElementById('members-list-body');
-    membersListBody.innerHTML = '';
+let LocalHistoryId = 0;

-    members.forEach((member, index) => {
-        const memberItem = document.createElement('li');
-        memberItem.innerHTML = `
-            <img src="${member.avatar}" alt="${member.username}">
-            <a href="profile.html">${member.username}</a>
-            <button class="delete-member" onclick="deleteMember(${index})">Удалить из чата</button>
-        `;
-        membersListBody.appendChild(memberItem);
-    });
-}
+let members = new Map();

-function deleteMember(index) {
-    members.splice(index, 1);
-    renderMembersList();
-}
+let loadedMessages = new Map();  // messageSt objects
+/*
+container: EL, box: EL, offset: number (msgPres) */
+let visibleMessages = new Map();  // HTMLElement objects

-async function sendMessage() {
-    const chatMessages = document.getElementById('chat-messages');
-    const chatInput = document.getElementById('chat-input');
-    const message = chatInput.value;
+let anchoredMsg = -1;
+let visibleMsgSegStart = -1;
+let visibleMsgSegEnd = -2;
+let offsetOfAnchor = 500;
+let highestPoint = null;
+let lowestPoint = null;

-    if (message.trim() !== '') {
-        const request = {
-            'chatId': currentChatID,
-            'LocalHistoryId': currentHistoryId,
-            'content': {
-                'text': message
-            }
-        };
+let lastMsgId = -1;
+let myRoleHere = null;  // Dung local state updates should be updated first

-        const response = await fetch("/internalapi/sendMessage", {
-            method: 'POST',
-            headers: {
-                'Content-Type': 'application/json'
-            },
-            body: JSON.stringify(request)
-        });
+// Would start with true if opened `/chat/<>`
+let bumpedAtBottom = false;

-        const res = await response.json();
+// Hidden variable. When deletion window popup is active
+// Persists from popup activation until popup deactivation
+let storeHiddenMsgIdForDeletionWin = -1;

-        if (res.update) {
-            const update = res.update[0];
-            currentHistoryId = update.HistoryId;
+let debugMode = false;

-            const messageElement = document.createElement('div');
-            messageElement.classList.add('chat-message');
+// Positive in production, negative for debug
+let softZoneSz = debugMode ? -150 : 300;
+let chatPadding = debugMode ? 300 : 5;
+let msgGap = 5;
+const msgErased = pres.chat.msgErased;

-            const avatarElement = document.createElement('div');
-            avatarElement.classList.add('avatar');
-
-            const avatarImage = document.createElement('img');
-            avatarImage.src = 'https://sun9-59.userapi.com/impg/t8GhZ7FkynVifY1FQCnaf31tGprbV_rfauZzgg/fSq4lyc6V0U.jpg?size=1280x1280&quality=96&sign=e3c309a125cb570d2e18465eba65f940&type=album';
-            avatarElement.appendChild(avatarImage);
-
-            const messageContentElement = document.createElement('div');
-            messageContentElement.classList.add('message-content');
-
-            const usernameElement = document.createElement('div');
-            usernameElement.classList.add('username');
-            usernameElement.textContent = await getUserName();
-
-            const textElement = document.createElement('div');
-            textElement.classList.add('text');
-            textElement.textContent = message;
-
-            messageContentElement.appendChild(usernameElement);
-            messageContentElement.appendChild(textElement);
-
-            messageElement.appendChild(avatarElement);
-            messageElement.appendChild(messageContentElement);
-
-            chatMessages.appendChild(messageElement);
-
-            chatInput.value = '';
-            chatMessages.scrollTop = chatMessages.scrollHeight;
-        }
-    }
-}
-
-function openMembersList() {
-    renderMembersList();
-    document.getElementById("members-list").style.display = "block";
-    document.getElementById("overlay").style.display = "flex";
-}
-
-function closeMembersList() {
-    document.getElementById("members-list").style.display = "none";
-    document.getElementById("overlay").style.display = "none";
-}
-
-document.getElementById('chat-input').addEventListener('keydown', function (event) {
-    if (event.key === 'Enter') {
-        sendMessage();
-    }
-});
-
-async function getUserID() {
-    const response = await fetch('/internalapi/mirror', {
-        method: 'POST',
-        headers: {
-            'Content-Type': 'application/json'
-        },
-        body: JSON.stringify({})
-    });
-
-    const res = await response.json();
-    return res.id;
-}
-async function getChatID() {
-    const chatNickname = window.location.pathname.split('/').pop();
-    const response = await fetch('/internalapi/getChatList', {
-        method: 'POST',
-        headers: {
-            'Content-Type': 'application/json'
-        },
-        body: JSON.stringify({})
-    });
-
-    const res = await response.json();
-    for (const chat of res.chats) {
-        if (chat.content.nickname === chatNickname) {
-            return chat.id;
-        }
-    }
-    return -1;
-}
-async function editMessage(new_message) {
-    const req = {
-        'chatId': currentChatID,
-        'LocalHistoryId': currentHistoryId,
-        'id': getUserID(),
-        'content': {
-            'text': new_message
+function genSentBase(){
+    return {
+        'chatUpdReq': {
+            'LocalHistoryId': LocalHistoryId,
+            'chatId': openedchat.id
        }
    };
-    const res = await fetch('/internalapi/editMessage', {
-        method: 'POST',
-        headers: {
-            'Content-Type': 'application/json'
-        },
-        body: JSON.stringify(req)
-    });
+}

-    const response = await res.json();
-    if (response.update) {
-        currentHistoryId = response.update[0].HistoryId;
+function genSentBaseGMN(){
+    let Sent = genSentBase();
+    Sent.amount = debugMode ? 2 : 14;
+    return Sent;
+}
+
+function getChatWgSz(){
+    let chatWg = document.getElementById("chat-widget");
+    return [chatWg.offsetWidth, chatWg.offsetHeight];
+}
+
+function elSetOffsetInChat(el, offset){
+    el.style.bottom = String(offset) + "px";
+}
+
+function isMissingPrimaryMsgHeap(){
+    return lastMsgId >= 0 && anchoredMsg < 0;
+}
+
+function isMissingTopMsgHeap(){
+    let [W, H] = getChatWgSz();
+    return anchoredMsg >= 0 && (highestPoint < H + softZoneSz && visibleMsgSegStart > 0);
+}
+
+function isMissingBottomMsgHeap(){
+    return anchoredMsg >= 0 && (lowestPoint > - softZoneSz && visibleMsgSegEnd < lastMsgId);
+}
+
+function updateOffsetOfVisibleMsg(msgId, offset){
+    visibleMessages.get(msgId).container.style.bottom = String(offset) + "px";
+}
+
+function updateOffsetsUpToTop(){
+    let offset = offsetOfAnchor;
+    for (let curMsg = anchoredMsg; curMsg >= visibleMsgSegStart; curMsg--){
+        updateOffsetOfVisibleMsg(curMsg, offset);
+        let height = visibleMessages.get(curMsg).container.offsetHeight;
+        offset += height + msgGap;
+    }
+    return offset - msgGap;
+}
+
+function updateOffsetsDown(){
+    let offset = offsetOfAnchor;
+    for (let curMsg = anchoredMsg + 1; curMsg <= visibleMsgSegEnd; curMsg++){
+        let height = visibleMessages.get(curMsg).container.offsetHeight;
+        offset -= (height + msgGap);
+        updateOffsetOfVisibleMsg(curMsg, offset);
+    }
+    return offset;
+}
+
+function updateOffsetsSane(){
+    if (anchoredMsg < 0)
+        return;
+    highestPoint = updateOffsetsUpToTop();
+    lowestPoint = updateOffsetsDown();
+}
+
+function heightOfPreloadGhost(){
+    let [W, H] = getChatWgSz();
+    return Math.min(H * 0.9, Math.max(H * 0.69, 30));
+}
+
+function updateOffsets(){
+    let spinnerTop = document.getElementById("top-loading");
+    let spinnerBottom = document.getElementById("bottom-loading");
+    let SbH = spinnerBottom.offsetHeight;
+    if (anchoredMsg < 0){
+        hideHTMLElement(spinnerBottom);
+        elSetOffsetInChat(spinnerTop, chatPadding);
+        setElementVisibility(spinnerTop, isMissingPrimaryMsgHeap());
+    } else {
+        let [W, H] = getChatWgSz();
+        updateOffsetsSane();
+        let lowestLowestPoint = isMissingBottomMsgHeap() ? lowestPoint - heightOfPreloadGhost(): lowestPoint;
+        let highestHighestPoint = isMissingTopMsgHeap() ? highestPoint + heightOfPreloadGhost() : highestPoint;
+        if (lowestLowestPoint > chatPadding || (highestHighestPoint - lowestLowestPoint) <= H - chatPadding * 2 ||
+            (!isMissingBottomMsgHeap() && bumpedAtBottom)) {
+
+            offsetOfAnchor += (-lowestLowestPoint + chatPadding);
+            updateOffsetsSane();
+        } else if (highestHighestPoint < H - chatPadding) {
+            offsetOfAnchor += (-highestHighestPoint + (H - chatPadding));
+            updateOffsetsSane();
+        }
+        /* Messages weere updated (and only them). They were talking with ghosts.
+        Now we are trying to show spinners of ghosts */
+        elSetOffsetInChat(spinnerTop, highestPoint);
+        setElementVisibility(spinnerTop, isMissingTopMsgHeap());
+        elSetOffsetInChat(spinnerBottom, lowestPoint - SbH);
+        setElementVisibility(spinnerBottom, isMissingBottomMsgHeap());
+        /* Fix anchor */
+        let oldAnchor = anchoredMsg;
+        while (true){
+            let h = visibleMessages.get(anchoredMsg).container.offsetHeight;
+            if (!(offsetOfAnchor + h < chatPadding && visibleMsgSegStart < anchoredMsg))
+                break
+            offsetOfAnchor += (msgGap + h);
+            anchoredMsg--;
+        }
+        while (offsetOfAnchor > H - chatPadding && anchoredMsg < visibleMsgSegEnd){
+            anchoredMsg++;
+            let h = visibleMessages.get(anchoredMsg).container.offsetHeight;
+            offsetOfAnchor -= (msgGap + h);
+        }
+        if (oldAnchor !== anchoredMsg)
+            console.log("anchoredMsg: " + String(oldAnchor) + " -> " + String(anchoredMsg))
    }
 }
-document.addEventListener("DOMContentLoaded", async function() {
-    currentChatID = await getChatID();
-});
+
+function shouldShowDeleteMesgBtn(messageSt){
+    return !messageSt.isSystem && messageSt.exists && (myRoleHere !== userChatRoleReadOnly) &&(
+        myRoleHere === userChatRoleAdmin || messageSt.senderUserId === userinfo.uid);
+}
+
+function getMsgTypeClassSenderBased(messageSt){
+    if (messageSt.isSystem)
+        return "message-box-system"
+    if (messageSt.senderUserId === userinfo.uid)
+        return "message-box-mine"
+    return "message-box-alien";
+}
+
+function getMsgFullTypeClassName(messageSt){
+    return getMsgTypeClassSenderBased(messageSt) + (messageSt.exists ? "" : " message-box-deleted");
+}
+
+/* Two things can be updated: messages existance and delete button visibility
+* Supercontainer.container is persistent, Supercontainer.box can change it's class */
+function updateMessageSupercontainer(supercontainer, messageSt){
+    let box = supercontainer.box;
+    if (messageSt.isSystem)
+        return;
+    setElementVisibility(box.querySelector(".message-box-button-delete"), shouldShowDeleteMesgBtn(messageSt), "inline");
+    box.className = getMsgFullTypeClassName(messageSt);
+    // Notice, that no check of previous state is performed. Double loading is a rare event, I can afford to be slow
+    if (!messageSt.exists)
+        box.querySelector(".message-box-msg").innerText = msgErased;
+}
+
+function decodeSystemMessage(text){
+    let [subject, verb, object] = text.split(',');
+    let subjectId = Number(subject);
+    let objectId = Number(object);
+    let subjectRef = members.has(subjectId) ? members.get(subjectId).nickname : "???";
+    let objectRef = members.has(objectId) ? members.get(objectId).nickname : "???";
+    if (verb === "kicked"){
+        return subjectRef + " " + pres.chat.syslog.kicked + " " + objectRef;
+    } else if (verb === "summoned"){
+        return subjectRef + " " + pres.chat.syslog.summoned + " " + objectRef;
+    } else if (verb === "left"){
+        return subjectRef + " " + pres.chat.syslog.left;
+    } else if (verb === "created"){
+        return subjectRef + " " + pres.chat.syslog.created;
+    }
+    return "... Bad log ...";
+}
+
+function convertMessageStToSupercontainer(messageSt){
+    let container = document.createElement("div");
+    container.className = "message-supercontainer";
+
+    let box = document.createElement("div");
+    container.appendChild(box);
+    box.className = getMsgFullTypeClassName(messageSt);
+
+    let ID = messageSt.id;
+
+    if (messageSt.isSystem){
+
+    } else {
+        let topPart = document.createElement("div");
+        box.appendChild(topPart);
+        topPart.className = "message-box-top";
+
+        if (!members.has(messageSt.senderUserId))
+            throw new Error("First - update members");
+        let senderMemberSt = members.get(messageSt.senderUserId);
+        let senderProfileURI = "/user/" + senderMemberSt.nickname;
+
+        let inTopPartSenderName = document.createElement("a");
+        topPart.appendChild(inTopPartSenderName);
+        inTopPartSenderName.className = "message-box-sender-name";
+        inTopPartSenderName.innerText = senderMemberSt.name;
+        inTopPartSenderName.href = senderProfileURI;
+
+        let inTopPartSenderNickname = document.createElement("a");
+        topPart.appendChild(inTopPartSenderNickname);
+        inTopPartSenderNickname.className = "message-box-sender-name message-box-sender-shortname"
+        inTopPartSenderNickname.innerText = senderMemberSt.nickname;
+        inTopPartSenderNickname.href = senderProfileURI;
+
+        let inTopPartButtonDelete = document.createElement("img");
+        topPart.appendChild(inTopPartButtonDelete);
+        inTopPartButtonDelete.className = "message-box-button message-box-button-delete";
+        inTopPartButtonDelete.src = "/assets/img/delete.svg";
+        inTopPartButtonDelete.onclick = (ev) => {
+            if (ev.button !== 0)
+                return;
+            let msgText = box.querySelector(".message-box-msg").innerText;
+            let previewText = senderMemberSt.nickname + ":\n" + msgText;
+            if (previewText.length > 1000)
+                previewText = previewText.substring(0, 1000 - 3);
+            document.getElementById("win-deletion-msg-preview").innerText = previewText;
+            storeHiddenMsgIdForDeletionWin = ID;
+            activatePopupWindowById("msg-deletion-win");
+        };
+        setElementVisibility(inTopPartButtonDelete, shouldShowDeleteMesgBtn(messageSt), "inline");
+
+        let inTopPartButtonGetLink = document.createElement("img");
+        topPart.appendChild(inTopPartButtonGetLink);
+        inTopPartButtonGetLink.className = "message-box-button";
+        inTopPartButtonGetLink.src = "/assets/img/link.svg";
+        inTopPartButtonGetLink.onclick = (ev) => {
+            if (ev.button !== 0)
+                return;
+            let URI = window.location.host + "/chat/" + openedchat.nickname + "/m/" + String(ID);
+            document.getElementById("message-input").innerText += (" " + URI + "");
+        };
+    }
+
+    let msgPart = document.createElement("p");
+    box.appendChild(msgPart);
+    msgPart.className = "message-box-msg";
+    if (messageSt.exists){
+        if (messageSt.isSystem)
+            msgPart.innerText = decodeSystemMessage(messageSt.text);
+        else
+            msgPart.innerText = messageSt.text;
+    } else
+        msgPart.innerText = msgErased;
+
+    return {'container': container, 'box': box};
+}
+
+function makeVisible(msgId){
+    let supercontainer = convertMessageStToSupercontainer(loadedMessages.get(msgId));
+    const chatWin = document.getElementById("chat-widget");
+    chatWin.appendChild(supercontainer.container);
+    visibleMessages.set(msgId, supercontainer);
+}
+
+function opaNewMessageSt(messageSt){
+    let msgId = messageSt.id;
+    if (loadedMessages.has(msgId)){
+        loadedMessages.set(msgId, messageSt);
+        if (visibleMessages.has(msgId)){
+            updateMessageSupercontainer(visibleMessages.get(msgId), messageSt);
+        }
+    } else {
+        loadedMessages.set(msgId, messageSt);
+        if (anchoredMsg < 0){
+            anchoredMsg = msgId;
+            visibleMsgSegStart = msgId;
+            visibleMsgSegEnd = msgId;
+            makeVisible(msgId);
+        } else if (msgId + 1 === visibleMsgSegStart) {
+            visibleMsgSegStart--;
+            makeVisible(msgId);
+            while (loadedMessages.has(visibleMsgSegStart - 1)){
+                visibleMsgSegStart--;
+                makeVisible(visibleMsgSegStart);
+            }
+        } else if (msgId - 1 === visibleMsgSegEnd){
+            visibleMsgSegEnd++;
+            makeVisible(msgId);
+            while (loadedMessages.has(visibleMsgSegEnd + 1)){
+                visibleMsgSegEnd++;
+                makeVisible(visibleMsgSegEnd);
+            }
+        }
+    }
+}
+
+function canISendMessages(){
+    return myRoleHere === userChatRoleRegular || myRoleHere === userChatRoleAdmin;
+}
+
+function updateLocalStateFromChatUpdRespBlind(chatUpdResp){
+    LocalHistoryId = chatUpdResp.HistoryId;
+    for (let memberSt of chatUpdResp.members){
+        let id = memberSt.userId;
+        if (id === userinfo.uid && myRoleHere !== memberSt.roleHere) {
+            myRoleHere = memberSt.roleHere;
+            for (let [msgId, sc] of visibleMessages){
+                updateMessageSupercontainer(sc, loadedMessages.get(msgId));
+            }
+            setElementVisibility(document.getElementById("message-input"), canISendMessages());
+        }
+    }
+    for (let memberSt of chatUpdResp.members){
+        let id = memberSt.userId;
+        members.set(id, memberSt);
+    }
+    lastMsgId = chatUpdResp.lastMsgId;
+    for (let messageSt of chatUpdResp.messages){
+        opaNewMessageSt(messageSt);
+    }
+    updateOffsets();
+}
+
+function updateLocalStateFromRecvBlind(Recv){
+    updateLocalStateFromChatUpdRespBlind(Recv.chatUpdResp);
+}
+
+async function requestMessageNeighbours(fromMsg, direction){
+    let Sent = genSentBaseGMN();
+    Sent.msgId = fromMsg;
+    Sent.direction = direction;
+    let Recv = await apiRequest("getMessageNeighbours", Sent);
+    updateLocalStateFromRecvBlind(Recv);  // Blind to non-loaded whitespaces
+}
+
+function needToLoadWhitespace(){
+    return isMissingPrimaryMsgHeap() || isMissingTopMsgHeap() || isMissingBottomMsgHeap();
+}
+
+async function tryLoadWhitespaceSingle(){
+    if (isMissingPrimaryMsgHeap()){
+        await requestMessageNeighbours(-1, "backward");
+    } else if (isMissingTopMsgHeap()){
+        await requestMessageNeighbours(visibleMsgSegStart, "backward");
+    } else if (isMissingBottomMsgHeap()){
+        await requestMessageNeighbours(visibleMsgSegEnd, "forward");
+    }
+}
+
+async function loadWhitespaceMultitry(){
+    if (needToLoadWhitespace()){
+        cancelMainloopTimeout();
+        do {
+            try {
+                await tryLoadWhitespaceSingle();
+                if (debugMode)
+                    await sleep(900);
+            } catch (e) {
+                console.error(e);
+                await sleep(1500);
+            }
+        } while (needToLoadWhitespace());
+        setMainloopTimeout();
+    }
+}
+
+async function updateLocalStateFromRecv(Recv){
+    updateLocalStateFromRecvBlind(Recv);
+    await loadWhitespaceMultitry();
+}
+
+async function safeApiRequestWithLocalStUpdate(type, Sent, errMsg){
+    try {
+        let Recv = await apiRequest(type, Sent)
+        await updateLocalStateFromRecv(Recv);
+    } catch(e) {
+        console.error(e);
+        alert(errMsg);
+    }
+}
+
+function configureMsgDeletionPopupButtons(){
+    document.getElementById("msg-deletion-yes").onclick = function(ev){
+        if (ev.button !== 0)
+            return;
+        deactivateActivePopup();
+        let Sent = genSentBase();
+        Sent.id = storeHiddenMsgIdForDeletionWin;
+        safeApiRequestWithLocalStUpdate("deleteMessage", Sent, pres.chat['failed-delete-message']);
+    };
+
+    document.getElementById("msg-deletion-no").onclick = function (ev){
+        if (ev.button !== 0)
+            return;
+        deactivateActivePopup();
+    }
+}
+
+__mainloopDelayMs = 1000;
+async function UPDATE(){
+    let Recv = await apiRequest("chatPollEvents", genSentBase());
+    await updateLocalStateFromRecv(Recv);
+}
+__guestMainloopPollerAction = UPDATE;
+
+window.onload = function (){
+    console.log("Page was loaded");
+
+    document.body.addEventListener("wheel", function (event) {
+        let offset = event.deltaY / 3;
+        if (offset < 0){
+            bumpedAtBottom = false;
+        } else if (offset > 0 && !isMissingBottomMsgHeap() && lowestPoint + offset > chatPadding){
+            bumpedAtBottom = true;
+        }
+        offsetOfAnchor += offset;
+        updateOffsets();
+        loadWhitespaceMultitry().then(dopDopYesYes);
+    });
+
+    document.getElementById("message-input").addEventListener("keyup", function (event) {
+        if (event.ctrlKey && event.key === 'Enter'){
+            let textarea = document.getElementById("message-input");
+            let text = String(textarea.innerText);
+            textarea.innerText = "";
+            let Sent = genSentBase();
+            Sent.content = {};
+            Sent.content.text = text;
+            safeApiRequestWithLocalStUpdate("sendMessage", Sent, pres.chat['failed-send-message']);
+        }
+    });
+
+    bumpedAtBottom = (openedchat.selectedMessageId < 0);
+
+    let chatWg = document.getElementById("chat-widget");
+    let chatWgDebugLinesFnc = function (){
+        let H = chatWg.offsetHeight;
+        elSetOffsetInChat(document.getElementById("debug-line-lowest"), -softZoneSz);
+        elSetOffsetInChat(document.getElementById("debug-line-highest"), H + softZoneSz);
+        elSetOffsetInChat(document.getElementById("debug-line-top-padding"), H - chatPadding);
+        elSetOffsetInChat(document.getElementById("debug-line-bottom-padding"), chatPadding)
+    };
+    if (debugMode){
+        window.addEventListener("resize", chatWgDebugLinesFnc);
+        chatWgDebugLinesFnc();
+    }
+
+    configureMsgDeletionPopupButtons();
+
+    updateLocalStateFromChatUpdRespBlind(initial_chatUpdResp);
+
+    setMainloopTimeout();
+
+    loadWhitespaceMultitry();
+}
--- a/assets/js/common-popup.js
+++ b/assets/js/common-popup.js
@ -0,0 +1,26 @@
+let activePopupWinId = "";
+
+function activatePopupWindow__(el){
+    let veil = document.createElement("div");
+    veil.id = "popup-overlay-veil-OBJ"
+    veil.className = "popup-overlay-veil";
+    veil.style.display = "block";
+    document.body.appendChild(veil);
+    el.style.display = "block";
+}
+
+function activatePopupWindowById(id){
+    if (activePopupWinId !== "")
+        return;
+    /* Lmao, this thing is just... SO unsafe */
+    activePopupWinId = id;
+    activatePopupWindow__(document.getElementById(id))
+}
+
+function deactivateActivePopup(){
+    if (activePopupWinId === "")
+        return
+    document.getElementById("popup-overlay-veil-OBJ").remove();
+    document.getElementById(activePopupWinId).style.display = "none";
+    activePopupWinId = "";
+}
--- a/assets/js/common.js
+++ b/assets/js/common.js
@ -0,0 +1,77 @@
+let dopDopYesYes = (ign) => {};
+
+function sleep(ms){
+    return new Promise(res => setTimeout(res, ms));
+}
+
+async function apiRequest(type, req){
+    let A = await fetch("/api/" + type,
+        {method: 'POST', body: JSON.stringify(req)});
+    let B = await A.json();
+    if (B.status !== 0)
+        throw Error("Server returned non-zero status");
+    return B;
+}
+
+/* Framework for pages with mainloop (it can be npt only polling, but also literally anything else */
+let __mainloopDelayMs = 3000;
+let mainloopTimeout = null;
+let __guestMainloopPollerAction = null;
+function setMainloopTimeout(){
+    if (mainloopTimeout !== null)
+        return;
+    mainloopTimeout = setTimeout(mainloopPoller, __mainloopDelayMs);
+}
+function cancelMainloopTimeout(){
+    if (mainloopTimeout === null){
+        console.log("cancelling nothing")
+        return;
+    }
+    clearTimeout(mainloopTimeout);
+    mainloopTimeout = null;
+}
+function mainloopPoller(){
+    mainloopTimeout = null;
+    try {
+        if (__guestMainloopPollerAction)
+            __guestMainloopPollerAction();
+    } catch (error){
+        console.log(error)
+    }
+    setMainloopTimeout();
+}
+
+// 1
+const userChatRoleAdmin = "admin";
+// 2
+const userChatRoleRegular = "regular";
+// 3
+const userChatRoleReadOnly = "read-only";
+// 4
+const userChatRoleDeleted = "not-a-member";
+
+function roleToColor(role) {
+    if (role === userChatRoleAdmin) {
+        return "#aafff3";
+    } else if (role === userChatRoleRegular){
+        return "#ffffff";
+
+    } else if (role === userChatRoleReadOnly){
+        return "#bfb2b2";
+    } else if (role === userChatRoleDeleted) {
+        return "#fb4a4a";
+    }
+    return "#286500"  // Bug
+}
+
+function hideHTMLElement(el){
+    el.style.display = "none";
+}
+
+function showHTMLElement(el){
+    el.style.display = "block";
+}
+
+function setElementVisibility(el, isVisible, howVisible = "block"){
+    el.style.display = isVisible ? howVisible : "none";
+}
--- a/assets/js/list-rooms.js
+++ b/assets/js/list-rooms.js
@ -1,186 +1,188 @@
-let rooms = {};
-let roomToDelete = null;
-let currentRoom = null;
-let currentHistoryId = 0;
+let LocalHistoryId = 0;

-function openRoom(currentRoom) {
-    alert('Вы вошли в комнату: ' + currentRoom);
-}
-
-function closeAdd() {
-    document.getElementById('add_members').style.display = 'none';
-}
-
-function openAdd() {
-    document.getElementById('add_members').style.display = 'flex';
-}
-
-function openConfirm(roomNickname) {
-    roomToDelete = roomNickname;
-    document.getElementById("delete-chat").style.display = "flex";
-}
-
-function closeConfirm() {
-    roomToDelete = null;
-    document.getElementById("delete-chat").style.display = "none";
-}
-
-function deleteChat() {
-    if (roomToDelete && rooms[roomToDelete]) {
-        delete rooms[roomToDelete];
-        removeRoomFromList(roomToDelete);
-        closeConfirm();
-    } else {
-        alert("Не удалось найти выбранную комнату.");
-    }
-}
-
-function addMember() {
-    const login = document.getElementById('newMemberLogin').value;
-    if (login) {
-        alert(`Участник с никнеймом '${login}' добавлен`);
-        closeAdd();
-    } else {
-        alert('Пожалуйста, введите логин участника');
-    }
-}
-
-function openCreateRoomModal() {
-    document.getElementById('createRoomModal').style.display = 'block';
-}
-
-function closeCreateRoomModal() {
-    document.getElementById('createRoomModal').style.display = 'none';
-}
-
-async function createRoom() {
-    const errorElement = document.getElementById('error');
-    const roomName = document.getElementById('newRoomName').value.trim();
-    const roomNickname = document.getElementById('newRoomNickname').value.trim();
-
-
-    errorElement.style.display = 'none';
-    errorElement.textContent = '';
-
-    if (roomName === '' || roomNickname === '') {
-        errorElement.textContent = 'Пожалуйста, заполните все поля';
-        errorElement.style.display = 'block';
-        return;
-    }
-
-    const request = {
-        LocalHistoryId: currentHistoryId,
-        content: {
-            name: roomName,
-            nickname: roomNickname
+function genSentBase(){
+    return {
+        'chatListUpdReq': {
+            'LocalHistoryId': LocalHistoryId
        }
    };
+}

-    try {
-        const response = await fetch('/internalapi/createChat', {
-            method: 'POST',
-            headers: {
-                'Content-Type': 'application/json'
-            },
-            body: JSON.stringify(request)
-        });
+let myChats = new Map();
+let chatBoxes = new Map();

-        const res = await response.json();
+/* Generate text that is displayed on the right side of chat intro box */
+function youAreXHere(myRoleHere){
+    // todo: TRANSLATE IT
+    return pres['list-rooms']['you-are-X-here'][0] + " " + myRoleHere + " " + pres['list-rooms']['you-are-X-here'][1];
+}

-        if (res.status === 0) {
-            addRoomToList(roomName, roomNickname);
-            rooms[roomNickname] = true;
-            closeCreateRoomModal();
-            currentHistoryId = res.update.LocalHistoryId;
-            window.location.href = '/chat/' + roomNickname;
+
+let chatRenunciationWinStoredId = -1;
+
+function shouldShowDeleteButton(myMembershipSt){
+    return myMembershipSt.myRoleHere === userChatRoleDeleted;
+}
+
+/* Updating chat html box after myMembershipSt in it was updated */
+function updateBoxWithNewSt(box, myMembershipSt){
+    let ID = myMembershipSt.chatId;
+    let roleP = box.querySelector(".CL-my-chat-box-my-role");
+    roleP.innerText = youAreXHere(myMembershipSt.myRoleHere);
+    box.style.backgroundColor = roleToColor(myMembershipSt.myRoleHere);
+    box.querySelector(".CL-my-chat-box-leave-btn").style.display =
+        (shouldShowDeleteButton(myMembershipSt) ? "none" : "block");
+}
+
+function convertMyMembershipStToBox(myMembershipSt){
+    let chatURI = "/chat/" + myMembershipSt.chatNickname;
+    let ID = myMembershipSt.chatId;
+
+    let box = document.createElement("div");
+    box.className = "dynamic-block-list-el CL-my-chat-box";
+    box.style.backgroundColor = roleToColor(myMembershipSt.myRoleHere);
+
+    let inBoxNickname = document.createElement("a");
+    box.appendChild(inBoxNickname);
+    inBoxNickname.className = "entity-nickname-txt CL-my-chat-box-nickname";
+    inBoxNickname.innerText = myMembershipSt.chatNickname;
+    inBoxNickname.href = chatURI;
+
+    let inBoxName = document.createElement("a");
+    box.appendChild(inBoxName);
+    inBoxName.className = "entity-reg-field-txt CL-my-chat-box-name";
+    inBoxName.innerText = myMembershipSt.chatName;
+    inBoxName.href = chatURI;
+
+    let inBoxMyRoleHere = document.createElement("p");
+    box.appendChild(inBoxMyRoleHere);
+    inBoxMyRoleHere.className = "entity-reg-field-txt CL-my-chat-box-my-role";
+    inBoxMyRoleHere.innerText = youAreXHere(myMembershipSt.myRoleHere);
+
+    let inBoxLeaveBtn = document.createElement("img");
+    box.appendChild(inBoxLeaveBtn);
+    inBoxLeaveBtn.className = "CL-my-chat-box-leave-btn";
+    inBoxLeaveBtn.src = "/assets/img/delete.svg";
+    inBoxLeaveBtn.onclick = function (ev) {
+        if (ev.button !== 0)
+            return;
+        chatRenunciationWinStoredId = ID;
+        document.getElementById("chat-renunciation-win-title").innerText =
+            pres['list-rooms']['reask-leave-chat-X'] + " " + myMembershipSt.chatNickname + "?";
+        activatePopupWindowById("chat-renunciation-win");
+    };
+    box.querySelector(".CL-my-chat-box-leave-btn").style.display =
+        (shouldShowDeleteButton(myMembershipSt) ? "none" : "block");
+    return box;
+}
+
+function updateLocalStateFromChatListUpdResp(chatListUpdResp){
+    LocalHistoryId = chatListUpdResp.HistoryId;
+
+    let literalChatList = document.getElementById("CL-dblec");
+
+    for (let myMembershipSt of chatListUpdResp.myChats){
+        let chatId = myMembershipSt.chatId;
+        console.log(myMembershipSt);
+        if (myChats.has(chatId)){
+            myChats.set(chatId, myMembershipSt);
+            updateBoxWithNewSt(chatBoxes.get(chatId), myMembershipSt);
        } else {
-            throw new Error(res.error || 'Ошибка');
+            if (myMembershipSt.myRoleHere === userChatRoleDeleted)
+                continue;
+            myChats.set(chatId, myMembershipSt);
+            let box = convertMyMembershipStToBox(myMembershipSt)
+            chatBoxes.set(chatId, box);
+            literalChatList.appendChild(box);
        }
-    } catch (error) {
-        alert('Ошибка создания чата: ' + error.message);
    }
 }

-function addRoomToList(roomName) {
-    const roomList = document.querySelector('.room-list');
-    const existingRoomItem = Array.from(roomList.children).find(item => item.querySelector('.room-name').textContent === roomName);
-    if (existingRoomItem) {
-        existingRoomItem.remove();
-    }
-
-    const roomItem = document.createElement('li');
-    roomItem.classList.add('room-item');
-
-    roomItem.innerHTML = `
-        <span class="room-name">${roomName}</span>
-        <button class="delete-chat-button" onclick="openConfirm('${roomNickname}')">Удалить чат</button>
-        <button class="add-members-button" onclick="openAdd()">Добавить участников</button>
-        <button class="join-button" onclick="window.location.href = '/chat/${roomNickname}'">Войти</button>
-    `;
-
-    roomList.appendChild(roomItem);
+/* Use it ONLY if `Recv` reported success */
+function updateLocalStateFromRecv(Recv){
+    updateLocalStateFromChatListUpdResp(Recv.chatListUpdResp);
 }

-function removeRoomFromList(roomName, roomNickname) {
-    const roomList = document.querySelector('.room-list');
-    const roomItem = Array.from(roomList.children).find(item => item.querySelector('.room-name').textContent === roomName);
-    if (roomItem) {
-        roomList.removeChild(roomItem);
-    }
-}
-
-async function initializeRoomList() {
-    try {
-        const response = await fetch('/internalapi/getChatList', {
-            method: 'POST',
-            headers: {
-                'Content-Type': 'application/json'
-            },
-            body: JSON.stringify({})
+function configureChatCreationInterface(){
+    document.getElementById("chat-creation-win-yes").onclick = function (ev) {
+        if (ev.button !== 0)
+            return;
+        let chatNicknameInput = document.getElementById("chat-nickname-input");
+        let chatNameInput = document.getElementById("chat-name-input");
+        let nickname = String(chatNicknameInput.value);
+        let name = String(chatNameInput.value);
+        deactivateActivePopup();
+        let Sent = genSentBase();
+        Sent.content = {};
+        Sent.content.nickname = nickname;
+        Sent.content.name = name;
+        apiRequest("createChat", Sent
+        ).then((Recv) => {
+            updateLocalStateFromRecv(Recv);
+        }).catch((e) => {
+            alert(pres['list-rooms']["failed-create-chat"]);
+            console.log(e);
        });
+    };

-        const res = await response.json();
+    document.getElementById("chat-creation-win-no").onclick = function (ev) {
+        if (ev.button !== 0)
+            return;
+        deactivateActivePopup();
+    }

-        if (res.status === 0) {
-            res.chats.forEach(chat => {
-                addRoomToList(chat.content.name, chat.content.nickname);
-            });
-        } else {
-            throw new Error(res.error || 'Неизвестная ошибка');
-        }
-    } catch (error) {
-        alert('Ошибка загрузки списка чатов: ' + error.message);
+    document.getElementById("CL-bacbe").onclick = function (ev){
+        if (ev.button !== 0)
+            return;
+        let chatNicknameInput = document.getElementById("chat-nickname-input");
+        let chatNameInput = document.getElementById("chat-name-input");
+        chatNicknameInput.value = "";
+        chatNameInput.value = "";
+        activatePopupWindowById("chat-creation-win");
+    };
+}
+
+function configureChatRenunciationInterfaceWinPart(){
+    document.getElementById("chat-renunciation-win-yes").onclick = function (ev){
+        if (ev.button !== 0)
+            return;
+        deactivateActivePopup();
+        if (chatRenunciationWinStoredId < 0)
+            throw new Error("chatRenunciationWinStoredId < 0");
+        let chatId = chatRenunciationWinStoredId;
+        let Sent = genSentBase();
+        Sent.chatId = chatId;
+        apiRequest("leaveChat", Sent
+        ).then((Recv) => {
+            updateLocalStateFromRecv(Recv);
+        }).catch((e) => {
+            alert(pres['list-rooms']["failed-create-chat"]);
+            console.log(e);
+        });
+    }
+
+    document.getElementById("chat-renunciation-win-no").onclick = function(ev) {
+        if (ev.button !== 0)
+            return;
+        deactivateActivePopup();
    }
 }

-
-async function getChatID() {
-    const chatNickname = window.location.pathname.split('/').pop();
-    const response = await fetch('/internalapi/getChatList', {
-        method: 'POST',
-        headers: {
-            'Content-Type': 'application/json'
-        },
-        body: JSON.stringify({})
+__mainloopDelayMs = 3000;
+__guestMainloopPollerAction = function(){
+    let Sent = genSentBase();
+    apiRequest("chatListPollEvents", Sent
+    ).then((Recv) => {
+        console.log("Got a response");
+        console.log(Recv);
+        updateLocalStateFromRecv(Recv);
    });
-
-    const res = await response.json();
-    for (const chat of res.chats) {
-        if (chat.content.nickname === chatNickname) {
-            return chat.id;
-        }
-    }
-    return -1;
-}
-window.onclick = function(event) {
-    if (event.target === document.getElementById('createRoomModal')) {
-        closeCreateRoomModal();
-    }
 }

-document.getElementById('newRoomName').addEventListener('keydown', function(event) {
-    if (event.key === 'Enter') {
-        createRoom();
-    }
-});
-document.addEventListener('DOMContentLoaded', initializeRoomList);
+window.onload = function () {
+    console.log("Loading complete");
+    updateLocalStateFromChatListUpdResp(initial_chatListUpdResp);
+    configureChatCreationInterface();
+    configureChatRenunciationInterfaceWinPart();
+    mainloopPoller();
+};
--- a/assets/js/login.js
+++ b/assets/js/login.js
@ -1,44 +0,0 @@
-document.addEventListener('DOMContentLoaded', function() {
-  let nickname, password;
-
-  function handleSubmit(event) {
-    event.preventDefault();
-    
-    nickname = document.getElementById('nickname').value;
-    password = document.getElementById('password').value;
-
-    pageStatusUpdate();
-  }
-
-  function pageStatusUpdate() {
-    const req = {
-      nickname,
-      password
-    };
-
-    
-    const apiUrl = 'http://127.0.0.1:1025/login';  
-    fetch(apiUrl, {
-      method: 'POST',
-      headers: {
-        'Content-Type': 'application/json'
-      },
-      body: JSON.stringify(req)
-    })
-    .then(response => {
-      if (response.ok) {
-        return response.json();
-      }
-    })
-    .then(data => {
-      if (data && data.status === 0) {
-        window.location.href = '/list-rooms';
-      }
-    });
-  }
-
-  const form = document.querySelector('form');
-  form.addEventListener('submit', handleSubmit);
-
-  setInterval(pageStatusUpdate, 1000);
-});
--- a/assets/js/profile.js
+++ b/assets/js/profile.js
@ -1,10 +0,0 @@
-document.getElementById('fileInput').addEventListener('change', function(event) {
-    const file = event.target.files[0];
-    if (file) {
-        const reader = new FileReader();
-        reader.onload = function(e) {
-            document.getElementById('avatar').src = e.target.result;
-        };
-        reader.readAsDataURL(file);
-    }
-});
--- a/assets/lang/en-US.lang.json
+++ b/assets/lang/en-US.lang.json
@ -0,0 +1,91 @@
+{
+  "lang": "en",
+  "login": {
+    "header": "Login",
+    "directive-nickname": "Enter your nickname:",
+    "placeholder-nickname": "Nickname",
+    "directive-password": "Enter password:",
+    "placeholder-password": "Password",
+    "act": "Login",
+    "incorrect-nickname-or-password": "Incorrect nickname or password"
+  },
+  "view-profile": {
+    "header-profile-of": "Profile of",
+    "directive-nickname": "Nickname:"
+  },
+  "edit-profile": {
+    "header-profile-of": "Profile of",
+    "change-user-attributes": "Change user attributes",
+    "directive-nickname": "Nickname:",
+    "directive-name": "Enter new name:",
+    "placeholder-name": "New name",
+    "directive-password": "Enter new password:",
+    "placeholder-password": "New password",
+    "directive-bio": "Change description:",
+    "act-submit": "Submit changes",
+    "incorrect-profile-data": "Incorrec profile data"
+  },
+  "list-rooms": {
+    "header": "List of chat rooms",
+    "new-chat-header": "Input identifying information for your new chat",
+    "directive-nickname": "Enter nickname for new chat:",
+    "placeholder-nickname": "Take a nickname",
+    "directive-name": "Enter name for new chat:",
+    "placeholder-name": "Come up with name",
+    "reask-create-new-chat": "Create new chat?",
+    "yes-create": "Yes, create",
+    "no-create": "No, cancel",
+    "reask-leave-chat-X": "Do you really want to leave chat",
+    "yes-leave": "Yes, leave",
+    "no-leave": "No, cancel",
+    "page-description": "List of available rooms",
+    "you-are-X-here": ["You are", "here"],
+
+    "failed-create-chat": "Failed to create chat",
+    "failed-to-leave-chat": "Failed to leave chat"
+  },
+  "chat-members": {
+    "members-of": "Members of",
+    "summon-label-nickname": "Nickname for summoned user",
+    "summon-label-ro": "Make read only",
+    "yes-summon": "Yes, summon",
+    "no-summon": "No, cancel",
+    "yes-kick": "Yes, delete",
+    "no-kick": "No, cancel",
+    "members-list-of": "Members list of",
+    "reask-kick-user-X" : "Do you really want to kick user",
+
+    "failed-summon-member": "Failed to add user to chat",
+    "failed-kick-member": "Failed to kick user from chat"
+  },
+  "chat": {
+    "header-chat": "Chat",
+    "reask-delete-message": "Are you sure you want to delete this message?",
+    "yes-delete": "Yes, delete",
+    "no-delete": "No, cancel",
+    "msgErased": "[ ERASED ]",
+    "syslog": {
+      "kicked": "kicked",
+      "summoned": "summoned",
+      "left": "left chat",
+      "created": "created this chat"
+    },
+    "failed-delete-message": "Failed to delete message",
+    "failed-send-message": "Failed to send message"
+  },
+  "register": {
+    "header": "Admin control - Registration",
+    "directive-nickname": "Nickname for new user",
+    "placeholder-nickname": "Nickname",
+    "directive-name": "Name for new user:",
+    "placeholder-name": "Name",
+    "directive-password": "Temporary password:",
+    "placeholder-password": "Password",
+    "act": "Register him",
+    "incorrect-nickname": "Incorrect nickname",
+    "incorrect-name": "Incorrect name",
+    "incorrect-password": "Incorrect password",
+    "nickname-taken": "Nickname already taken",
+    "add_user_error": "add_user failed"
+  }
+}
--- a/assets/lang/ru-RU.lang.json
+++ b/assets/lang/ru-RU.lang.json
@ -0,0 +1,91 @@
+{
+  "lang": "ru",
+  "login": {
+    "header": "Вход",
+    "directive-nickname": "Введите свой никнейм:",
+    "placeholder-nickname": "Никнейм",
+    "directive-password": "Введите пароль:",
+    "placeholder-password": "Пароль",
+    "act": "Войти",
+    "incorrect-nickname-or-password": "Неверный логин или пароль"
+  },
+  "view-profile": {
+    "header-profile-of": "Профиль",
+    "directive-nickname": "Никнейм:"
+  },
+  "edit-profile": {
+    "header-profile-of": "Профиль",
+    "change-user-attributes": "Изменить аттрибуты пользователя",
+    "directive-nickname": "Никнейм:",
+    "directive-name": "Введите новое имя:",
+    "placeholder-name": "Новое имя",
+    "directive-password": "Введите новый пароль",
+    "placeholder-password": "Новый пароль",
+    "directive-bio": "Изменить 'о себе':",
+    "act-submit": "Применить",
+    "incorrect-profile-data": "Недопустимые данные профиля"
+  },
+  "list-rooms": {
+    "header": "Список чат-комнат",
+    "new-chat-header": "Введите идентификационные данные для вашего нового чата",
+    "directive-nickname": "Введите никнейм для нового чата:",
+    "placeholder-nickname": "Займите никнейм",
+    "directive-name": "Введите имя для нового чата:",
+    "placeholder-name": "Придумайте имя",
+    "reask-create-new-chat": "Создать новый чат?",
+    "yes-create": "Да, создай",
+    "no-create": "Нет, отмена",
+    "reask-leave-chat-X": "Вы действительно хотите покинуть чат",
+    "yes-leave": "Да, покидаю",
+    "no-leave": "Нет, отмена",
+    "page-description": "Список доступных чат-комнат",
+    "you-are-X-here": ["Вы", "здесь"],
+
+    "failed-create-chat": "Не смог создать чат",
+    "failed-to-leave-chat": "Не смог покинуть чат"
+  },
+  "chat-members": {
+    "members-of": "Участники",
+    "summon-label-nickname": "Никнейм для призываемого пользователя",
+    "summon-label-ro": "Сделать 'лишь читающим'",
+    "yes-summon": "Да, призваю",
+    "no-summon": "Нет, отмена",
+    "yes-kick": "Да, выкидываю",
+    "no-kick": "Нет, отмена",
+    "members-list-of": "Список участников",
+    "reask-kick-user-X" : "Вы действительно хотите выкинуть участника",
+
+    "failed-summon-member": "Не смог добавить участника",
+    "failed-kick-member": "Не смог выкинуть участника"
+  },
+  "chat": {
+    "header-chat": "Чат",
+    "reask-delete-message": "Удалить это сообщение?",
+    "yes-delete": "Да, удаляю",
+    "no-delete": "Нет, отмена",
+    "msgErased": "[ СТЁРТО ]",
+    "syslog": {
+      "kicked": "выкинул",
+      "summoned": "призвал",
+      "left": "покинул чат",
+      "created": "создал этот чат"
+    },
+    "failed-delete-message": "Не смог удалить сообщение",
+    "failed-send-message": "Не смог отправить сообщение"
+  },
+  "register": {
+    "header": "Admin control - Регистрация",
+    "directive-nickname": "Никнейм для нового пользователя:",
+    "placeholder-nickname": "Никнейм",
+    "directive-name": "Имя для нового пользователя:",
+    "placeholder-name": "Имя",
+    "directive-password": "Временный пароль:",
+    "placeholder-password": "Пароль",
+    "act": "Зарегистрируй его",
+    "incorrect-nickname": "Плохой никнейм",
+    "incorrect-name": "Плохое имя",
+    "incorrect-password": "Плохой пароль",
+    "nickname-taken": "Никнейм уже занят",
+    "add_user_error": "add_user failed"
+  }
+}
--- a/building/main.cpp
+++ b/building/main.cpp
@ -78,6 +78,7 @@ struct CAWebChat {
                "http_structures/client_request_parse.cpp",
                "http_structures/response_gen.cpp",
                "http_structures/cookies.cpp",
+                "http_structures/accept_language.cpp",
                "connecting_assets/static_asset_manager.cpp",
                "running_mainloop.cpp",
                "form_data_structure/urlencoded_query.cpp",
@ -97,6 +98,7 @@ struct CAWebChat {
                "http_structures/client_request.h",
                "http_structures/cookies.h",
                "http_structures/response_gen.h",
+                "http_structures/accept_language.h",
                "running_mainloop.h",
                "form_data_structure/urlencoded_query.h",
                "socket_address.h",
@ -141,6 +143,7 @@ struct CAWebChat {
                CTargetDependenceOnExternalLibrary{"sqlite3", {true, true}}
            };
            T.units = {
+                "localizator.cpp",
                "initialize.cpp",
                "run.cpp",
                "str_fields.cpp",
@ -149,16 +152,20 @@ struct CAWebChat {
                "login_cookie.cpp",
                "backend_logic/server_data_interact.cpp",
                "backend_logic/client_server_interact.cpp",
-                "backend_logic/when_list_rooms.cpp",
+
                "backend_logic/when_login.cpp",
+                "backend_logic/when_list_rooms.cpp",
                "backend_logic/when_chat.cpp",
                "backend_logic/when_user.cpp",
-                "backend_logic/when_api_pollevents.cpp",
-                "backend_logic/when_api_getchatlist.cpp",
-                "backend_logic/when_api_getchatinfo.cpp",
-                "backend_logic/when_api_getchatmemberlist.cpp",
-                "backend_logic/when_api_getuserinfo.cpp",
-                "backend_logic/when_api_getmessageinfo.cpp",
+                "backend_logic/when_register.cpp",
+                "backend_logic/polling.cpp",
+                "backend_logic/api_sendmessage.cpp",
+                "backend_logic/api_deletemessage.cpp",
+                "backend_logic/api_addmembertochat.cpp",
+                "backend_logic/api_removememberfromchat.cpp",
+                "backend_logic/api_createchat.cpp",
+                "backend_logic/api_leavechat.cpp",
+                "backend_logic/admin_control_procedure.cpp",
            };
            for (std::string& u: T.units)
                u = "web_chat/iu9_ca_web_chat_lib/" + u;
--- a/example/config.json
+++ b/example/config.json
@ -1,33 +1,13 @@
 {
-  "presentation": {
-    "lang": "ru",
-    "instance-identity": {
-      "top-title": "Вэб чат от ИУ9"
-    },
-    "phr": {
-      "decl": {
-        "enter": "Вход",
-        "nickname": "Никнейм",
-        "password": "Пароль",
-        "page-login": "Вход",
-        "list-of-chat-rooms": "Список Чат-Коsмнат",
-        "name-of-room": "Название комнаты",
-        "create-room": "Создать комнату"
-      },
-      "ask" : {
-        "select-chat-room": "Выберете чат комнату"
-      },
-      "act": {
-        "enter": "Войти",
-        "create-room": "Создать комнату",
-        "confirm": "Подтвердить",
-        "create": "Создать"
-      }
-    }
+  "lang": {
+    "whitelist": ["*"],
+    "force-order": [
+      "ru"
+    ]
  },
  "assets": "./assets",
  "database": {
-    "type": "sqlite",
+    "type": "sqlite3",
    "file": "./iu9-ca-web-chat.db"
  },
  "limits": {
@ -37,7 +17,7 @@
    "storage-size-limit": 100000000000
  },
  "server": {
-    "workers": 8,
+    "workers": 16,
    "http-listen": ["127.0.0.1:1025"],
    "admin-command-listen": ["[::1]:1026"]
  }
--- a/src/http_server/engine_engine_number_9/http_structures/accept_language.cpp
+++ b/src/http_server/engine_engine_number_9/http_structures/accept_language.cpp
@ -0,0 +1,72 @@
+#include "accept_language.h"
+#include <algorithm>
+#include "grammar.h"
+#include "../baza_inter.h"
+
+namespace een9 {
+    bool AcceptLanguageSpec(char ch) {
+        return ch == ',' || ch == ';' || ch == '=';
+    }
+
+    /* todo: This is one of many places in een9, where bad alloc does not interrupt request,
+     * todo:  completely changing response instead. (see cookies and login cookies lol)
+     * todo: I have to do something about it. Maybe add more exception types */
+    std::vector<std::string> parse_header_Accept_Language(const std::string &AcceptLanguage) {
+        size_t n = AcceptLanguage.size();
+        struct LR {
+            std::string lr;
+            float q = 1;
+        };
+        size_t i = 0;
+        auto skipOWS = [&]() {
+            while (i < n && isSPACE(AcceptLanguage[i]))
+                i++;
+        };
+        auto isThis = [&](char ch) {
+            skipOWS();
+            return i >= n ? false : AcceptLanguage[i] == ch;
+        };
+        auto readTkn = [&]() -> std::string {
+            skipOWS();
+            if (i >= n)
+                return "";
+            size_t bg = i;
+            while (i < n && !AcceptLanguageSpec(AcceptLanguage[i]) && !isSPACE(AcceptLanguage[i]))
+                i++;
+            return AcceptLanguage.substr(bg, i - bg);
+        };
+        std::vector<LR> lrs;
+#define myMsg "Bad Accept-Language"
+        while (i < n) {
+            skipOWS();
+            if (i >= n)
+                break;
+            if (!lrs.empty()) {
+                if (isThis(','))
+                    i++;
+                else
+                    break;
+            }
+            lrs.emplace_back();
+            lrs.back().lr = readTkn();
+            LR lr{readTkn(), 0};
+            if (isThis(';')) {
+                i++;
+                if (readTkn() != "q")
+                    THROW(myMsg);
+                if (!isThis('='))
+                    THROW(myMsg);
+                i++;
+                lrs.back().q = std::stof(readTkn());
+            }
+        }
+        std::sort(lrs.begin(), lrs.end(), [](const LR& A, const LR& B) {
+            return A.q > B.q;
+        });
+        std::vector<std::string> result;
+        result.reserve(lrs.size());
+        for (const LR& lr: lrs)
+            result.push_back(lr.lr == "*" ? "" : lr.lr);
+        return result;
+    }
+}
--- a/src/http_server/engine_engine_number_9/http_structures/accept_language.h
+++ b/src/http_server/engine_engine_number_9/http_structures/accept_language.h
@ -0,0 +1,13 @@
+#ifndef ENGINE_ENGINE_NUMBER_9_HTTP_STRUCTURES_ACCEPT_LANGUAGE_H
+#define ENGINE_ENGINE_NUMBER_9_HTTP_STRUCTURES_ACCEPT_LANGUAGE_H
+
+#include <vector>
+#include <string>
+
+namespace een9 {
+    /* Returns language ranges, sorted by priority (reverse)
+     * throws std::exception if header is incorrect! But it is not guaranteed. Maybe it won't */
+    std::vector<std::string> parse_header_Accept_Language(const std::string& AcceptLanguage);
+}
+
+#endif
--- a/src/http_server/engine_engine_number_9/http_structures/client_request_parse.cpp
+++ b/src/http_server/engine_engine_number_9/http_structures/client_request_parse.cpp
@ -111,7 +111,11 @@ namespace een9 {
                            status = -1;
                            return status;
                        }
-                        res.body.reserve(body_size);
+                        res.body.reserve(std::min(100000ul, body_size));
+                        if (body_size == 0) {
+                            status = 1;
+                        }
+                        break;
                    }
                }
                if (!res.has_body) {
--- a/src/http_server/engine_engine_number_9/http_structures/cookies.cpp
+++ b/src/http_server/engine_engine_number_9/http_structures/cookies.cpp
@ -1,14 +1,20 @@
 #include "cookies.h"
 #include "../baza_inter.h"

+#include "grammar.h"
+
 namespace een9 {
    bool isSPACE(char ch) {
        return ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n';
    }

+    bool isALPHANUM(char ch) {
+        return ('a' <= ch && ch <= 'z') || ('A' <= ch && ch <= 'Z') || ('0' <= ch && ch <= '9');
+    }
+
    bool isToken(const std::string &str) {
        for (char ch : str) {
-            if (!(('a' <= ch && ch <= 'z') || ('A' <= ch && ch <= 'Z') || ('0' <= ch && ch <= '9')
+            if (!(isALPHANUM(ch)
                || ch == '!' || ch == '#' || ch == '$' || ch == '%' || ch == '&' || ch == '\'' || ch == '*'
                || ch == '+' || ch == '-' || ch == '.' || ch == '^' || ch == '_' || ch == '`' || ch == '|'
                || ch == '~' ))
@ -43,7 +49,7 @@ namespace een9 {
                pos++;
            return hv.substr(S, pos - S);
        };
-        auto read_to_space_or_dq_or_semc = [&]() -> std::string {
+        auto read_to_space_or_semc = [&]() -> std::string {
            size_t S = pos;
            while (hv.size() > pos && !isSPACE(hv[pos]) && hv[pos] != '"' && hv[pos] != ';')
                pos++;
@ -68,16 +74,7 @@ namespace een9 {
                THROW("Incorrect Cookie header line, missing =");
            pos++;
            skip_ows();
-            std::string value_of_pechenye;
-            if (isThis('"')) {
-                pos++;
-                value_of_pechenye = read_to_space_or_dq_or_semc();
-                if (!isThis('"'))
-                    THROW("Incorrect Cookie header line, missing \"");
-                pos++;
-            } else {
-                value_of_pechenye = read_to_space_or_dq_or_semc();
-            }
+            std::string value_of_pechenye = read_to_space_or_semc();
            // ASSERT(isCookieValue(value_of_pechenye), "Incorrect Cookie value");
            result.emplace_back(name_of_pechenye, value_of_pechenye);
            skip_ows();
--- a/src/http_server/engine_engine_number_9/http_structures/grammar.h
+++ b/src/http_server/engine_engine_number_9/http_structures/grammar.h
@ -0,0 +1,11 @@
+#ifndef ENGINE_ENGINE_NUMBER_9_HTTP_STRUCTURES_GRAMMAR_H
+#define ENGINE_ENGINE_NUMBER_9_HTTP_STRUCTURES_GRAMMAR_H
+
+#include <string>
+
+namespace een9 {
+    bool isSPACE(char ch);
+    bool isALPHANUM(char ch);
+}
+
+#endif
--- a/src/http_server/engine_engine_number_9/running_mainloop.cpp
+++ b/src/http_server/engine_engine_number_9/running_mainloop.cpp
@ -258,10 +258,10 @@ namespace een9 {
                }
                errno = 0;
                ret = poll(pollfds.data(), Nip, params.mainloop_recheck_interval_us);
-                if (ret != 0) {
-                    printf("poll() error :> %d\n", errno);
+                if (ret != 0 && errno != 0) {
+                    printf("poll() error :> %s\n", een9::prettyprint_errno("").c_str());
+                    continue;
                }
-                ASSERT_on_iret(ret, "poll()");
                for (size_t i = 0; i < Nip; i++) {
                    if ((pollfds[i].revents & POLLRDNORM)) {
                        try {
--- a/src/http_server/misc_tests/HypertextPages/test.nytl.html
+++ b/src/http_server/misc_tests/HypertextPages/test.nytl.html
@ -1,8 +1,6 @@
-{% ELDEF main JSON cba %}
+{% ELDEF main JSON userprofile %}
    AAA
-        {% FOR val IN cba.arr %}
-            --> {% WRITE val %}
-        {% ENDFOR %}
+    --> {% WRITE userprofile.name %}
    AAA

 {% ENDELDEF %}
--- a/src/http_server/misc_tests/accept_language_test.cpp
+++ b/src/http_server/misc_tests/accept_language_test.cpp
@ -0,0 +1,35 @@
+#include <engine_engine_number_9/baza_inter.h>
+#include <engine_engine_number_9/http_structures/accept_language.h>
+
+using namespace een9;
+
+void test(const std::string& al, const std::vector<std::string>& rls) {
+    std::vector<std::string> got = parse_header_Accept_Language(al);
+    if (got != rls) {
+        printf("Test failed: wrong answer\n");
+        abort();
+    }
+    printf("Test passed\n");
+}
+
+void btest(const std::string& al) {
+    try {
+        parse_header_Accept_Language(al);
+    } catch (std::exception& e) {}
+    printf("...\n");
+}
+
+int main() {
+    test("RU-RU, uk-EN; q = 12.22", {"uk-EN", "RU-RU"});
+    test("   RU-RU   ,uk-EN; q = 12.22  ", {"uk-EN", "RU-RU"});
+    test(" AAA; q=0.1,  BBB-bb ; q=3, *; q=3", {"BBB-bb", "", "AAA"});
+    test(" AAA; q=0.1,  BBB-bb ; q=2.5, *; q=4.5", {"", "BBB-bb", "AAA"});
+    test("ABB, AAA; q=0.1,AAB,  BBB-bb ; q=2.5, *; q=4.5", {"", "BBB-bb", "ABB", "AAB", "AAA"});
+    test("", {});
+    test("   ", {});
+    btest(";;;;");
+    btest(";;==;;");
+    btest("-;");
+    btest("-==");
+    return 0;
+}
--- a/src/http_server/misc_tests/nytl_test1.cpp
+++ b/src/http_server/misc_tests/nytl_test1.cpp
@ -9,16 +9,19 @@ int main(int argc, char** argv) {
        exit(1);
    }

-    std::string dir_path = argv[1];
+    // std::string dir_path = "./src/http_server/misc_tests/HypertextPages";
+    std::string dir_path = "/home/gregory/cpp_projects/iu9-ca-web-chat/assets/HypertextPages";
    nytl::Templater templater(nytl::TemplaterSettings{nytl::TemplaterDetourRules{dir_path}});
    templater.update();

-    std::string config_file = argv[2];
-    std::string config_text;
-    een9::readFile(config_file, config_text);
-    const json::JSON config = json::parse_str_flawless(config_text);
-
-    std::string answer2 = templater.render("login", {&config["presentation"].g()});
+    json::JSON userprofile;
+    userprofile["uid"].asInteger() = json::Integer(0l);
+    userprofile["name"].asString() = "radasdasdasdadsdasd";
+    userprofile["nickname"].asString() = "root";
+    userprofile["bio"].asString() = "Your mother";
+    json::JSON errors;
+    errors = json::JSON(json::array);
+    std::string answer2 = templater.render("err-404", {});
    printf("%s\n<a><f><t><e><r><><l><f>\n", answer2.c_str());

    return 0;
--- a/src/http_server/new_york_transit_line/debug_print.cpp
+++ b/src/http_server/new_york_transit_line/debug_print.cpp
@ -7,8 +7,13 @@ namespace nytl {
    void debug_print_templater(const Templater& T) {
        printf("===== TEMPLATER INTERNAL RESOURCES =====\n");
        for (auto& p: T.elements) {
+            if (!p.second.is_element) {
+                printf("=== %s is empty =====\n", p.first.c_str());
+                continue;
+            }
            printf("=== %s element =====\n", p.first.c_str());
-            const Element& el = p.second;
+            assert(p.second.when_element);
+            const Element& el = *p.second.when_element;
            printf("%s, %s\n", el.base ? "BASE" : "NOT BASE", el.is_hidden ? "HIDDEN" : "NOT HIDDEN");
            if (!el.is_hidden) {
                std::string signature;
--- a/src/http_server/new_york_transit_line/parser.cpp
+++ b/src/http_server/new_york_transit_line/parser.cpp
@ -55,13 +55,16 @@ namespace nytl {
    }

    char skip(ParsingContext& ctx) {
-        ASSERT(ctx.pos < ctx.text.size(), "Unexpected EOF");
+        if (ctx.pos >= ctx.text.size())
+            THROW("Unexpected EOF");
        return advance(ctx);
    }

    void skip(ParsingContext& ctx, char ch) {
-        ASSERT(ctx.pos < ctx.text.size(), "Unexpected EOF");
-        ASSERT(ctx.text[ctx.pos] == ch, "Unexpected character");
+        if (ctx.pos >= ctx.text.size())
+            THROW("Unexpected EOF");
+        if (ctx.text[ctx.pos] != ch)
+            THROW("Unexpected character");
        advance(ctx);
    }

@ -147,16 +150,41 @@ namespace nytl {
        return concatenateLines(lines);
    }

-    void parse_bare_file(const std::string& filename, const std::string& content,
-                             global_elem_set_t& result)
-    {
-        ASSERT(result.count(filename) == 0, "Repeated element " + filename);
+    Element& add_hidden_element(const std::string& new_el_name, global_elem_set_t& result) {
+        if (result.count(new_el_name) != 0)
+            THROW("Repated element " + new_el_name);
+        TemplaterRegPref& rp = result[new_el_name];
+        rp.is_element = 1;
+        rp.when_element = std::make_unique<Element>();
+        rp.when_element->is_hidden = true;
+        return *rp.when_element;
+    }
+
+    Element& add_new_element(const std::string& new_el_name, global_elem_set_t& result) {
+        if (!is_uname_dotted_sequence(new_el_name))
+            THROW("Krabovaya oshibka");
+        if (result.count(new_el_name) != 0 && result.at(new_el_name).is_element)
+            THROW("Repated element " + new_el_name);
+        size_t n = new_el_name.size();
+        for (size_t i = 0; i < n; i++) {
+            if (new_el_name[i] == '.') {
+                std::string pref = new_el_name.substr(0, i);
+                result[pref];
+            }
+        }
+        TemplaterRegPref& rp = result[new_el_name];
+        rp.is_element = 1;
+        rp.when_element = std::make_unique<Element>();
+        return *rp.when_element;
+    }
+
+    void parse_bare_file(const std::string& filename, const std::string& content, global_elem_set_t& result) {
+        Element& el = add_new_element(filename, result);
        std::string txt = clement_lstrip(content);
        rstrip(txt);
        size_t cut = 9999999999999;
        one_part_update_min_start_wsp_non_empty(txt, 0, 1, cut);
        txt = one_part_cut_excess_tab(txt, 0, 1, cut);
-        Element& el = result[filename];
        el.parts = {ElementPart{}};
        el.parts[0].when_code.lines = mv(txt);
    }
@ -170,15 +198,17 @@ namespace nytl {
        uptr<TPFrame> toMe(bool returned, ParsingContext& ctx) {
            if (!returned) {
                std::string nm = readName(ctx);
-                ASSERT(!nm.empty(), "Type specification expected");
+                if (nm.empty())
+                    THROW("Type specification expected");
                nm = make_uppercase(nm);
                if (nm == "JSON") {
                    result = json::JSON(true);
                    return NULL;
                }
-                ASSERT(nm == "EL", "Type of argument variable is either JSON or EL(...signature)")
+                if (nm != "EL")
+                    THROW("Type of argument variable is either JSON or EL(...signature)");
                skip(ctx, '(');
-                result = json::JSON(json::array);
+                result.asArray();
                assert(result.isArray());
            }
            skipWhitespace(ctx);
@ -217,19 +247,21 @@ namespace nytl {
        uptr<EPFrame> toMe(bool returned, ParsingContext& ctx, const arg_name_list_t& local_var_names) {
            if (!returned) {
                std::string first = readName(ctx);
-                ASSERT(!first.empty(), "Expression should start with 'root' name of global package or local variable");
-                ASSERT(first != "_", "_ ??? ARE YOU KIDDING???");
+                if (first.empty())
+                    THROW("Expression should start with 'root' name of global package or local variable");
+                if (first == "_")
+                    THROW("Expression root can't be _");
                if (local_var_names.count(first) == 1) {
-                    result["V"] = json::JSON(json::Integer((int64_t)local_var_names.at(first)));
+                    result["V"].asInteger() = json::Integer((int64_t)local_var_names.at(first));
                } else {
-                    result["V"] = json::JSON(first);
+                    result["V"].asString() = first;
                }
-                result["C"] = json::JSON(json::array);
+                result["C"].asArray();
            } else {
                skipWhitespace(ctx);
                skip(ctx, ']');
            }
-            std::vector<json::JSON>& chain = result["C"].g().asArray();
+            std::vector<json::JSON>& chain = result["C"].asArray();
            while (true) {
                if (peep(ctx) == '.') {
                    skip(ctx, '.');
@ -243,7 +275,8 @@ namespace nytl {
                    t = readUint(ctx);
                    if (!t.empty()) {
                        size_t v = std::stoul(t);
-                        ASSERT(v < INT64_MAX, "Index is too big");
+                        if (v >= INT64_MAX)
+                            THROW("Index is too big");
                        chain.back() = json::JSON((int64_t)v);
                        continue;
                    }
@ -352,7 +385,8 @@ namespace nytl {
                ElementPart::when_for_put_S& P = result.parts.back().when_for_put;
                skipWhitespace(ctx);
                std::string V1 = readName(ctx);
-                ASSERT(!V1.empty(), "Expected variable name");
+                if (V1.empty())
+                    THROW("Expected variable name");
                skipWhitespace(ctx);
                bool have_colon_and_2 = false;
                std::string V2;
@ -364,21 +398,23 @@ namespace nytl {
                    skipWhitespace(ctx);
                }
                op = make_uppercase(readName(ctx));
-                ASSERT(op == "IN", "Expected IN");
+                if (op != "IN")
+                    THROW("Expected IN");
                skipWhitespace(ctx);
                P.ref_over = parse_expression(ctx, local_var_names);
                P.internal_element = el_name + ".~" + std::to_string(free_hidden++);
-                Element& newborn = elem_ns[P.internal_element];
-                newborn.is_hidden = true;
+                Element& newborn = add_hidden_element(P.internal_element, elem_ns);
                arg_name_list_t local_var_names_of_nxt = local_var_names;
                if (V1 != "_") {
-                    ASSERT(local_var_names_of_nxt.count(V1) == 0, "Repeated local variable");
+                    if (local_var_names_of_nxt.count(V1) != 0)
+                        THROW("Repeated local variable");
                    size_t k = local_var_names_of_nxt.size();
                    local_var_names_of_nxt.emplace(V1, k);
                    (have_colon_and_2 ? P.where_key_var : P.where_value_var) = (ssize_t)k;
                }
                if (have_colon_and_2 && V2 != "_") {
-                    ASSERT(local_var_names_of_nxt.count(V2) == 0, "Repeated local variable");
+                    if (local_var_names_of_nxt.count(V2) != 0)
+                        THROW("Repeated local variable");
                    size_t k = local_var_names_of_nxt.size();
                    local_var_names_of_nxt.emplace(V2, k);
                    P.where_value_var = (ssize_t)k;
@ -395,16 +431,16 @@ namespace nytl {
                ElementPart::when_ref_put_S& P = result.parts.back().when_ref_put;
                skipWhitespace(ctx);
                std::string Vn = readName(ctx);
-                ASSERT(!Vn.empty(), "Expected variable name");
-                ASSERT(Vn != "_", "Are you kidding???");
+                if (Vn.empty() || Vn == "_")
+                    THROW("REF: expected variable name");
                skipWhitespace(ctx);
                op = make_uppercase(readName(ctx));
-                ASSERT(op == "AS", "Expected AS");
+                if (op != "AS")
+                    THROW("Expected AS");
                skipWhitespace(ctx);
                P.ref_over = parse_expression(ctx, local_var_names);
                P.internal_element = el_name + ".~" + std::to_string(free_hidden++);
-                Element& newborn = elem_ns[P.internal_element];
-                newborn.is_hidden = true;
+                Element& newborn = add_hidden_element(P.internal_element, elem_ns);
                arg_name_list_t local_var_names_of_nxt = local_var_names;
                size_t k = local_var_names_of_nxt.size();
                local_var_names_of_nxt.emplace(Vn, k);
@ -413,7 +449,7 @@ namespace nytl {
                return std::make_unique<ECPFrame>(P.internal_element, gone_for_ref, local_var_names_of_nxt,
                    ret_data_int, newborn);
            }
-            if (op == "PUT") {
+            if (op == "PUT" || op == "P") {
                result.parts.emplace_back();
                result.parts.back().type = ElementPart::p_put;
                ElementPart::when_put_S& P = result.parts.back().when_put;
@ -439,11 +475,11 @@ namespace nytl {
                P.passed_arguments = {parse_expression(ctx, local_var_names)};
                skip_magic_block_end(ctx, syntax);
            };
-            if (op == "WRITE") {
+            if (op == "WRITE" || op == "W") {
                mediocre_operator("str2text");
                goto ya_e_ya_h_i_ya_g_d_o;;
            }
-            if (op == "ROUGHINSERT") {
+            if (op == "ROUGHINSERT" || op == "RI") {
                mediocre_operator("str2code");
                goto ya_e_ya_h_i_ya_g_d_o;;
            }
@ -467,13 +503,15 @@ namespace nytl {
                }
            };
            if (op == "ENDELDEF") {
-                ASSERT(myself == gone_for_nothing, "Unexpected end of element");
+                if (myself != gone_for_nothing)
+                    THROW("Unexpected ENDELDEF");
                skip_magic_block_end(ctx, syntax);
                prepare_to_depart_parts();
                return NULL;
            }
            if (op == "ENDFOR") {
-                ASSERT(myself == gone_for_for, "Unexpected end of for cycle");
+                if (myself != gone_for_for)
+                    THROW("Unexpected ENDFOR");
                skipWhitespace(ctx);
                /* Here I am using ret_data_int to return info about NOLF(1)/LF(2) decision */
                ret_data_int = 2;  // Default is to do LF
@ -491,7 +529,8 @@ namespace nytl {
                return NULL;
            }
            if (op == "ENDREF") {
-                assert(myself == gone_for_ref);
+                if (myself != gone_for_ref)
+                    THROW("Unexpected ENDREF");
                skip_magic_block_end(ctx, syntax);
                prepare_to_depart_parts();
                return NULL;
@ -525,13 +564,14 @@ namespace nytl {
            if (peep(ctx) == EOFVAL)
                break;
            skip_magic_block_start(ctx, syntax);
-            ASSERT(make_uppercase(readName(ctx)) == "ELDEF", "Expected ELDEF");
+            if (make_uppercase(readName(ctx)) != "ELDEF")
+                THROW("Expected ELDEF");
            skipWhitespace(ctx);
            std::string elname_postfix = readName(ctx);
-            ASSERT(elname_postfix != "_", "please don't");
+            if (elname_postfix == "_")
+                THROW("Can't use _ as element name");
            std::string fullname = elname_postfix == "main" ? filename : filename + "." + elname_postfix;
-            ASSERT(result.count(fullname) == 0, "Element " + fullname + " has been already defined");
-            Element& newborn = result[fullname];
+            Element& newborn = add_new_element(fullname, result);
            arg_name_list_t arglist;
            while (true) {
                skipWhitespace(ctx);
@ -540,9 +580,11 @@ namespace nytl {
                newborn.arguments.push_back(parse_type(ctx));
                skipWhitespace(ctx);
                std::string argname = readName(ctx);
-                ASSERT(!argname.empty(), "Expected argument name");
+                if (argname.empty())
+                    THROW("Expected argument name");
                if (argname != "_") {
-                    ASSERT(arglist.count(argname) == 0, "Repeated argument (" + argname + ")");
+                    if (arglist.count(argname) != 0)
+                        THROW("Repeated argument (" + argname + ")");
                    size_t k = arglist.size();
                    arglist[argname] = k;
                }
--- a/src/http_server/new_york_transit_line/rendering.cpp
+++ b/src/http_server/new_york_transit_line/rendering.cpp
@ -23,58 +23,64 @@ namespace nytl {
              result(result) {
        }

-        void descend(const json::JSON& what) {
+        void descend(const json::JSON& what, const global_elem_set_t& global_elems) {
            if (result.is_json) {
                const json::JSON& P = *result.JSON_subval;
                if (P.isArray() && what.isInteger()) {
                    const std::vector<json::JSON>& arr_p = P.asArray();
                    int64_t ind_w = what.asInteger().get_int();
-                    ASSERT(ind_w > 0 && ind_w < arr_p.size(), "Expression \"array[integer]\" caused out-of-bound situation");
+                    if (!(ind_w > 0 && ind_w < arr_p.size()))
+                        THROW("Expression \"array[integer]\" caused out-of-bound situation");
                    result = LocalVarValue{true, "", &arr_p[ind_w]};
                } else if (P.isDictionary() && what.isString()) {
                    const std::map<std::string, json::JSON>& dict_p = P.asDictionary();
                    const std::string& key_w = what.asString();
-                    ASSERT(dict_p.count(key_w) == 1, "No such key exception (" + key_w + ")");
+                    if (dict_p.count(key_w) != 1)
+                        THROW("No such key exception (" + key_w + ")");
                    result = LocalVarValue{true, "", &dict_p.at(key_w)};
                } else
                    THROW("Incorrect type of \"json[json]\" expression. Unallowed signature of [] operator");
            } else {
-                ASSERT(what.isString(), "Expression \"element[X]\" allowed only if X is string (json object)");
-                if (what.asString().empty())
-                    return;
-                if (!is_uname_dotted_sequence(what.asString()))
-                    THROW("Incorrect X in \"element[X]\"");
+                if (!what.isString())
+                    THROW("Expression \"element[X]\" allowed only if X is string (json object)");
+                if (!isUname(what.asString()))
+                    THROW("Expression \"element[str]\" has incorrect str (" + what.asString() + ")");
                result.EL_name += ("." + what.asString());
+                if (global_elems.count(result.EL_name) != 1)
+                    THROW("Can't descend. No such element (" + result.EL_name + ")");
            }
        }

        uptr<EEFrame> toMe(bool returned, const global_elem_set_t& global_elems,
                const std::vector<LocalVarValue>& local_vars) {
            if (returned) {
-                ASSERT(temp_ret.is_json, "Expression \"X[ element ]\" is not allowed");
+                if (!temp_ret.is_json)
+                    THROW("Expression \"X[ element ]\" is not allowed");
                assert(temp_ret.JSON_subval);
-                descend(*(temp_ret.JSON_subval));
+                descend(*(temp_ret.JSON_subval), global_elems);
            } else {
                assert(expr.isDictionary());
-                const json::JSON& val = expr["V"].g();
+                const json::JSON& val = expr["V"];
                if (val.isInteger()) {
                    size_t lv_ind = val.asInteger().get_int();
                    assert(lv_ind < local_vars.size());
                    result = local_vars[lv_ind];
                } else if (val.isString()) {
-                    std::string cur_el_name_str = expr["V"].g().asString();
+                    std::string cur_el_name_str = expr["V"].asString();
+                    if (global_elems.count(cur_el_name_str) != 1)
+                        THROW("Bad expression, no such element (" + cur_el_name_str + ")");
                    result = LocalVarValue{false, cur_el_name_str, NULL};
                } else
                    assert(false);
            }
-            const std::vector<json::JSON>& chain = expr["C"].g().asArray();
+            const std::vector<json::JSON>& chain = expr["C"].asArray();
            while (true) {
                if (chain_el >= chain.size())
                    return NULL;
                const json::JSON& t = chain[chain_el++];
                if (t.isDictionary())
                    return std::make_unique<EEFrame>(t, temp_ret);
-                descend(t);
+                descend(t, global_elems);
            }
        }
    };
@ -84,6 +90,8 @@ namespace nytl {
     * and dictionaries. They are stored in json in rendering stack */
    LocalVarValue rendering_core_execute_expression(const global_elem_set_t& global_elems,
        const std::vector<LocalVarValue>& local_vars, const json::JSON& expr) {
+
+        // todo: check if root element exists (if root value is not local variable, then it is element of package)
        bool returned = false;
        std::vector<uptr<EEFrame>> stack;
        LocalVarValue result;
@ -211,8 +219,9 @@ namespace nytl {
    uptr<RFrame> RFrame_OverParts::toMe(bool returned, const global_elem_set_t &elem_ns, Ditch &result,
        const std::function<std::string(std::string)> &escape) {
        if (!returned)
-            ASSERT(elem_ns.count(name) == 1, "No such element");
-        const Element& el = elem_ns.at(name);
+            if ((elem_ns.count(name) != 1) || (!elem_ns.at(name).is_element))
+                THROW("Can't render. No such element (" + name + ")");
+        const Element& el = *elem_ns.at(name).when_element;
        if (!returned) {
            /* Continue to do checks */
            /* hidden elements (internal) do not need any check */
@ -221,14 +230,17 @@ namespace nytl {
                ASSERT(n == passed_args.size(), "Argument count mismatch");
                for (size_t i = 0; i < n; i++) {
                    if (el.arguments[i].type == json::true_symbol) {
-                        ASSERT(passed_args[i].is_json, "Expected json element argument, got element");
+                        if (!passed_args[i].is_json)
+                            THROW("Expected json element argument, got element");
                    } else {
                        // If not json is expected, element must be expected
                        assert(el.arguments[i].isArray());
-                        ASSERT(!passed_args[i].is_json, "Expected element element arguemnt, got json");
-                        ASSERT(elem_ns.count(passed_args[i].EL_name), "No such element, can't compare signatures of argument value");
-                        const Element& arg_element = elem_ns.at(passed_args[i].EL_name);
-                        // ASSERT(passed_args);
+                        if (passed_args[i].is_json)
+                            THROW("Expected element element arguemnt, got json");
+                        const std::string& passed_el_as_arg = passed_args[i].EL_name;
+                        if ((elem_ns.count(passed_el_as_arg) != 1) || !elem_ns.at(passed_el_as_arg).is_element)
+                            THROW("No such element, can't compare signatures of argument value (" + passed_el_as_arg + ")");
+                        const Element& arg_element = elem_ns.at(passed_el_as_arg).when_element.operator*();
                        if(el.arguments[i].asArray() != arg_element.arguments)
                            THROW("Signature of argument " + std::to_string(i) + " does not match");
                    }
--- a/src/http_server/new_york_transit_line/templater.cpp
+++ b/src/http_server/new_york_transit_line/templater.cpp
@ -109,16 +109,17 @@ namespace nytl {
        return result;
    }

+    TemplaterRegPref gen_base_element() {
+        Element* e = new Element{{json::JSON(true)}, true, false, {}};
+        return {1, std::unique_ptr<Element>(e)};
+    }
+
    void Templater::update() {
-        elements = {
-            {"jsinsert", Element{{json::JSON(true)}, true}},
-            {"jesc", Element{{json::JSON(true)}, true}},
-            {"jesccomp", Element{{json::JSON(true)}, true}},
-            /* str2text base element has a dedicated operator - WRITE */
-            {"str2text", Element{{json::JSON(true)}, true}},
-            /* str2code base element has a dedicated operator - ROUGHINSERT */
-            {"str2code", Element{{json::JSON(true)}, true}},
-        };
+        elements[""] = TemplaterRegPref{0, NULL};
+        elements["jsinsert"] = gen_base_element();
+        elements["jesc"] = gen_base_element();
+        elements["str2text"] = gen_base_element();
+        elements["str2code"] = gen_base_element();
        std::vector<InterestingFile> intersting_files = indexing_detour(settings.det);
        for (const InterestingFile& file: intersting_files) {
            std::string content = readFile(file.path);
@ -132,7 +133,8 @@ namespace nytl {

    /* Still can throw some stuff derived from std::exception (like bad alloc) */
    std::string Templater::render(const std::string& element, const std::vector<const json::JSON*> &arguments) const {
-        ASSERT(is_uname_dotted_sequence(element), "Incorrect entry element name");
+        if (!is_uname_dotted_sequence(element))
+            THROW("Incorrect entry element name");
        return rendering_core(element, arguments, elements, settings.escape);
    }
 }
--- a/src/http_server/new_york_transit_line/templater.h
+++ b/src/http_server/new_york_transit_line/templater.h
@ -6,6 +6,8 @@
 #include <jsonincpp/jsonobj.h>
 #include <functional>
 #include "html_case.h"
+#include <memory>
+#include <forward_list>

 namespace nytl {
    typedef json::JSON expression_t;
@ -61,7 +63,12 @@ namespace nytl {
        std::function<std::string(std::string)> escape = html_case_espace_string;
    };

-    typedef std::map<std::string, Element> global_elem_set_t;
+    struct TemplaterRegPref {
+        int is_element = 0;
+        std::unique_ptr<Element> when_element = NULL;
+    };
+
+    typedef std::map<std::string, TemplaterRegPref> global_elem_set_t;

    struct Templater {
        TemplaterSettings settings;
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/admin_control_procedure.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/admin_control_procedure.cpp
@ -0,0 +1,81 @@
+#include "server_data_interact.h"
+#include <engine_engine_number_9/baza_throw.h>
+#include "../str_fields.h"
+#include <string.h>
+
+namespace iu9cawebchat {
+    /* nagative `forced_id` means id isn't forced  */
+    void add_user(SqliteConnection& conn, const std::string& nickname, const std::string& name,
+        const std::string& password, const std::string& bio, int64_t forced_id) {
+        if (!check_nickname(nickname))
+            een9_THROW("Bad user nickname " + nickname + ". Can't reg");
+        if (!check_name(name))
+            een9_THROW("Bad user name " + name + ". Can't reg");
+        if (!check_strong_password(password))
+            een9_THROW("Bad user password. Can't reg");
+        if (!is_orthodox_string(bio))
+            een9_THROW("Bad user bio. Can't reg");
+        if (is_nickname_taken(conn, nickname))
+            een9_THROW("Nickname taken already. Can't reg");
+        reserve_nickname(conn, nickname);
+        SqliteStatement req(conn,
+            "INSERT INTO `user` (`id`, `nickname`, `name`, `chatList_HistoryId`, `password`, `bio`) "
+            "VALUES (?1, ?2, ?3, 0, ?4, ?5)", {}, {{2, nickname}, {3, name}, {4, password}, {5, bio}});
+        if (forced_id >= 0)
+            sqlite_stmt_bind_int64(req, 1, forced_id);
+        int must_be_done = sqlite_stmt_step(req, {}, {});
+        if (must_be_done != SQLITE_DONE)
+            een9_THROW("sqlite error");
+    }
+
+    std::string admin_control_procedure(SqliteConnection& conn, const std::string& req, bool& termination) {
+        size_t nid = 0;
+        auto read_thing = [&]() -> std::string {
+            while (nid < req.size() && isSPACE(req[nid]))
+                nid++;
+            std::string result;
+            bool esc = false;
+            while (nid < req.size() && (esc || !isSPACE(req[nid]))) {
+                if (esc) {
+                    result += req[nid];
+                    esc = false;
+                } else if (req[nid] == '\\') {
+                    esc = true;
+                } else {
+                    result += req[nid];
+                }
+                nid++;
+            }
+            return result;
+        };
+
+        std::string cmd = read_thing();
+        if (cmd == "hello") {
+            return ":0 omg! hiii!! Hewwou :3 !!!!\n";
+        }
+        if (cmd == "8") {
+            termination = true;
+            return "Bye\n";
+        }
+        const char* adduser_pref = "adduser";
+        if (cmd == "updaterootpw") {
+
+            std::string new_password = read_thing();
+            if (!check_strong_password(new_password))
+                return "Bad password. Can't update";
+            sqlite_nooutput(conn,
+                "UPDATE `user` SET `password` = ?1 WHERE `id` = 0", {}, {{1, new_password}});
+            return "Successul update\n";
+        }
+        /* adduser <nickname> <name> <password> <bio> */
+        if (cmd == "adduser") {
+            std::string nickname = read_thing();
+            std::string name = read_thing();
+            std::string password = read_thing();
+            std::string bio = read_thing();
+            add_user(conn, nickname, name, password, bio);
+            return "User " + nickname + " successfully registered";
+        }
+        return "Incorrect command\n";
+    }
+}
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/api_addmembertochat.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/api_addmembertochat.cpp
@ -0,0 +1,75 @@
+#include "server_data_interact.h"
+#include <engine_engine_number_9/baza_throw.h>
+#include <assert.h>
+
+namespace iu9cawebchat {
+    bool is_membership_row_present(SqliteConnection& conn, int64_t chatId, int64_t alienUserId) {
+        SqliteStatement req(conn,
+            "SELECT EXISTS(SELECT 1 FROM `user_chat_membership` WHERE `chatId` = ?1 AND `userId` = ?2)",
+            {{1, chatId}, {2, alienUserId}}, {});
+        fsql_integer_or_null r{true, 0};
+        int status = sqlite_stmt_step(req, {{0, &r}}, {});
+        return (bool)r.value;
+    }
+
+    void alter_user_chat_role(SqliteConnection& conn, int64_t chatId, int64_t alienUserId, int64_t role) {
+        int64_t chat_HistoryId_BEFORE_EV = get_current_history_id_of_chat(conn, chatId);
+        int64_t alien_chatlist_HistoryId_BEFORE_EV = get_current_history_id_of_user_chatList(conn, alienUserId);
+        if (!is_membership_row_present(conn, chatId, alienUserId)) {
+            sqlite_nooutput(conn,
+               "INSERT INTO `user_chat_membership` (`userId`, `chatId`, `user_chatList_IncHistoryId`,"
+               "`chat_IncHistoryId`, `role`) VALUES (?1, ?2, ?3, ?4, ?5)",
+               {{1, alienUserId}, {2, chatId}, {3, alien_chatlist_HistoryId_BEFORE_EV + 1},
+               {4, chat_HistoryId_BEFORE_EV + 1}, {5, role}}, {});
+
+        } else {
+            sqlite_nooutput(conn,
+                "UPDATE `user_chat_membership` SET `user_chatList_IncHistoryId` = ?3,`chat_IncHistoryId` = ?4,"
+                "`role` = ?5 WHERE `userId` = ?1 AND `chatId` = ?2",
+                {{1, alienUserId}, {2, chatId}, {3, alien_chatlist_HistoryId_BEFORE_EV + 1},
+                {4, chat_HistoryId_BEFORE_EV + 1}, {5, role}}, {});
+        }
+        sqlite_nooutput(conn,
+            "UPDATE `chat` SET `it_HistoryId` = ?1 WHERE `id` = ?2", {{1, chat_HistoryId_BEFORE_EV + 1},
+            {2, chatId}}, {});
+
+        sqlite_nooutput(conn,
+            "UPDATE `user` SET `chatList_HistoryId` = ?1 WHERE `id` = ?2",
+            {{1, alien_chatlist_HistoryId_BEFORE_EV + 1}, {2, alienUserId}}, {});
+    }
+
+    void make_her_a_member_of_the_midnight_crew(SqliteConnection& conn, int64_t chatId, int64_t alienUserId, int64_t role) {
+        assert(role != user_chat_role_deleted);
+        alter_user_chat_role(conn, chatId, alienUserId, role);
+    }
+
+    json::JSON internalapi_addMemberToChat(SqliteConnection& conn, int64_t uid, const json::JSON& Sent) {
+        int64_t chatId = Sent["chatUpdReq"]["chatId"].asInteger().get_int();
+        int64_t my_role_here = get_role_of_user_in_chat(conn, uid, chatId);
+        if (my_role_here != user_chat_role_admin)
+            een9_THROW("Non-admin user tries to access internalapi_getChatInfo");
+
+        std::string alien_nickname = Sent["nickname"].asString();
+        RowUser_Content alien;
+        try {
+            alien = lookup_user_content_by_nickname(conn, alien_nickname);
+        } catch (std::exception& e) {
+            return at_api_error_gen_bad_recv(-1l);
+        }
+
+        bool makeReadOnly = Sent["makeReadOnly"].toBool();
+
+        int64_t aliens_old_role = get_role_of_user_in_chat(conn, alien.id, chatId);
+        if (aliens_old_role == user_chat_role_deleted) {
+            make_her_a_member_of_the_midnight_crew(conn, chatId, alien.id,
+                makeReadOnly ? user_chat_role_read_only : user_chat_role_regular);
+        } else {
+            return at_api_error_gen_bad_recv(-2l);
+        }
+        insert_system_message_svo(conn, chatId, uid, "summoned", alien.id);
+
+        json::JSON Recv;
+        poll_update_chat(conn, Sent, Recv);
+        return Recv;
+    }
+}
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/api_createchat.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/api_createchat.cpp
@ -0,0 +1,30 @@
+#include "server_data_interact.h"
+#include <engine_engine_number_9/baza_throw.h>
+#include "../str_fields.h"
+
+namespace iu9cawebchat {
+    json::JSON internalapi_createChat(SqliteConnection& conn, int64_t uid, const json::JSON& Sent) {
+        std::string new_chat_name = Sent["content"]["name"].asString();
+        std::string new_chat_nickname = Sent["content"]["nickname"].asString();
+        if (!check_nickname(new_chat_nickname) || !check_name(new_chat_name))
+            return at_api_error_gen_bad_recv(-1l);
+        if (is_nickname_taken(conn, new_chat_nickname))
+            return at_api_error_gen_bad_recv(-2l);
+        if (is_nickname_taken(conn, new_chat_nickname))
+            return at_api_error_gen_bad_recv(-3l);
+        reserve_nickname(conn, new_chat_nickname);
+
+        sqlite_nooutput(conn,
+            "INSERT INTO `chat` (`nickname`, `name`, `it_HistoryId`, `lastMsgId`) VALUES (?1, ?2, 0, -1)",
+            {}, {{1, new_chat_nickname}, {2, new_chat_name}});
+
+        int64_t CHAT_ID = sqlite_trsess_last_insert_rowid(conn);
+
+        make_her_a_member_of_the_midnight_crew(conn, CHAT_ID, uid, user_chat_role_admin);
+
+        // todo: send a message into chat
+        json::JSON Recv;
+        poll_update_chat_list(conn, uid, Sent, Recv);
+        return Recv;
+    }
+}
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/api_deletemessage.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/api_deletemessage.cpp
@ -0,0 +1,33 @@
+#include "server_data_interact.h"
+#include <engine_engine_number_9/baza_throw.h>
+#include "../debug.h"
+
+namespace iu9cawebchat {
+    json::JSON internalapi_deleteMessage(SqliteConnection& conn, int64_t uid, const json::JSON& Sent) {
+        int64_t chatId = Sent["chatUpdReq"]["chatId"].asInteger().get_int();
+        int64_t my_role_here = get_role_of_user_in_chat(conn, uid, chatId);
+        if (my_role_here == user_chat_role_deleted)
+            een9_THROW("Unauthorized user tries to access internalapi_getChatInfo");
+        if (my_role_here == user_chat_role_read_only)
+            een9_THROW("read-only user can't send messages");
+
+        int64_t LocalHistoryId = Sent["chatUpdReq"]["LocalHistoryId"].asInteger().get_int();
+        int64_t msgId = Sent["id"].asInteger().get_int();
+        RowMessage_Content msgInQuestion = lookup_message_content(conn, chatId, msgId);
+        if (!(!msgInQuestion.isSystem && (msgInQuestion.senderUserId == uid || my_role_here == user_chat_role_admin) ))
+            een9_THROW("Can't delete: permission denied");
+
+        int64_t chat_HistoryId_BEFORE_EV = get_current_history_id_of_chat(conn, chatId);
+
+        sqlite_nooutput(conn,
+            "UPDATE `message` SET `exists` = 0, `text` = NULL, `chat_IncHistoryId` = ?1 WHERE `id` = ?2",
+            {{1, chat_HistoryId_BEFORE_EV + 1}, {2, msgId}});
+
+        sqlite_nooutput(conn, "UPDATE `chat` SET `it_HistoryId` = ?1 WHERE `id` = ?2",
+            {{1, chat_HistoryId_BEFORE_EV + 1}, {2, chatId}}, {});
+
+        json::JSON Recv;
+        poll_update_chat(conn, Sent, Recv);
+        return Recv;
+    }
+}
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/api_leavechat.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/api_leavechat.cpp
@ -0,0 +1,15 @@
+#include "server_data_interact.h"
+#include <engine_engine_number_9/baza_throw.h>
+
+namespace iu9cawebchat {
+    json::JSON internalapi_leaveChat(SqliteConnection& conn, int64_t uid, const json::JSON& Sent) {
+        int64_t chatId = Sent["chatId"].asInteger().get_int();
+        if (get_role_of_user_in_chat(conn, uid, chatId) == user_chat_role_deleted)
+            een9_THROW("Not a member");
+        kick_from_chat(conn, chatId, uid);
+        insert_system_message_svo(conn, chatId, uid, "left", -1);
+        json::JSON Recv;
+        poll_update_chat_list(conn, uid, Sent, Recv);
+        return Recv;
+    }
+}
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/api_removememberfromchat.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/api_removememberfromchat.cpp
@ -0,0 +1,21 @@
+#include "server_data_interact.h"
+#include <engine_engine_number_9/baza_throw.h>
+
+namespace iu9cawebchat {
+    void kick_from_chat(SqliteConnection& conn, int64_t chatId, int64_t alienUserId) {
+        alter_user_chat_role(conn, chatId, alienUserId, user_chat_role_deleted);
+    }
+
+    json::JSON internalapi_removeMemberFromChat(SqliteConnection& conn, int64_t uid, const json::JSON& Sent) {
+        int64_t chatId = Sent["chatUpdReq"]["chatId"].asInteger().get_int();
+        int64_t my_role_here = get_role_of_user_in_chat(conn, uid, chatId);
+        if (my_role_here != user_chat_role_admin)
+            een9_THROW("Only admin can delete members of chat");
+        int64_t badAlienId = Sent["userId"].asInteger().get_int();
+        kick_from_chat(conn, chatId, badAlienId);
+        insert_system_message_svo(conn, chatId, uid, "kicked", badAlienId);
+        json::JSON Recv;
+        poll_update_chat(conn, Sent, Recv);
+        return Recv;
+    }
+}
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/api_sendmessage.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/api_sendmessage.cpp
@ -0,0 +1,50 @@
+#include "server_data_interact.h"
+#include <engine_engine_number_9/baza_throw.h>
+#include "../str_fields.h"
+#include "../debug.h"
+
+namespace iu9cawebchat {
+    /* No authorization check is performed
+     * Chat's HistoryId will increment after this operation
+     * if adding system message, uid is ignored
+     */
+    void insert_new_message(SqliteConnection& conn, int64_t uid, int64_t chatId, const std::string& text, bool isSystem) {
+        int64_t chat_HistoryId_BEFORE_MSG = get_current_history_id_of_chat(conn, chatId);
+        int64_t chat_lastMsgId = get_lastMsgId_of_chat(conn, chatId);
+        SqliteStatement req(conn,
+            "INSERT INTO `message` (`chatId`, `id`, `senderUserId`, `exists`, `isSystem`, `chat_IncHistoryId`, "
+            "`text`) VALUES (?1, ?2, ?3, 1, ?4, ?5, ?6)",
+            {{1, chatId}, {2, chat_lastMsgId + 1}, {4, (int64_t)isSystem}, {5, chat_HistoryId_BEFORE_MSG + 1}}, {{6, text}});
+        if (!isSystem)
+            sqlite_stmt_bind_int64(req, 3, uid);
+        if (sqlite_stmt_step(req, {}, {}) != SQLITE_DONE)
+            een9_THROW("There must be something wrong");
+        sqlite_nooutput(conn, "UPDATE `chat` SET `lastMsgId` = ?1, `it_HistoryId` = ?2 WHERE `id` = ?3",
+            {{1, chat_lastMsgId + 1}, {2, chat_HistoryId_BEFORE_MSG + 1}, {3, chatId}}, {});
+    }
+
+    void insert_system_message_svo(SqliteConnection& conn, int64_t chatId,
+        int64_t subject, const std::string& verb, int64_t object) {
+
+        insert_new_message(conn, -1, chatId,
+            std::to_string(subject) + "," + verb + "," + std::to_string(object), true);
+    }
+
+    json::JSON internalapi_sendMessage(SqliteConnection& conn, int64_t uid, const json::JSON& Sent) {
+        int64_t chatId = Sent["chatUpdReq"]["chatId"].asInteger().get_int();
+        int64_t my_role_here = get_role_of_user_in_chat(conn, uid, chatId);
+        if (my_role_here == user_chat_role_deleted)
+            een9_THROW("Unauthorized user tries to access internalapi_getChatInfo");
+        if (my_role_here == user_chat_role_read_only)
+            een9_THROW("read-only user can't send messages");
+
+        std::string text = Sent["content"]["text"].asString();
+        if (!is_orthodox_string(text) || text.empty())
+            een9_THROW("Bad input text");
+        insert_new_message(conn, uid, chatId, text, false);
+
+        json::JSON Recv;
+        poll_update_chat(conn, Sent, Recv);
+        return Recv;
+    }
+}
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/client_server_interact.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/client_server_interact.cpp
@ -1,5 +1,6 @@
 #include "client_server_interact.h"
 #include <engine_engine_number_9/http_structures/cookies.h>
+#include <functional>

 namespace iu9cawebchat {
    void initial_extraction_of_all_the_useful_info_from_cookies(
@ -19,60 +20,72 @@ namespace iu9cawebchat {
            if (ret_logged_in_user >= 0) {
                ret_userinfo["uid"] = json::JSON(ret_logged_in_user);
                ret_userinfo["nickname"] = json::JSON(tried.nickname);
-                ret_userinfo["name"] = json::JSON(find_user_name(conn, ret_logged_in_user));
+                ret_userinfo["name"] = json::JSON(get_user_name(conn, ret_logged_in_user));
            }
        }
    }

-    std::string RTEE(const std::string& el_name,
-                     const json::JSON& config_presentation, WorkerGuestData& wgd,
-                     const json::JSON& userinfo) {
-        std::string page = wgd.templater->render(el_name, {&config_presentation, &userinfo});
+    std::string http_R200(const std::string &el_name, WorkerGuestData &wgd,
+        const std::vector<const json::JSON *> &args) {
+        std::string page = wgd.templater->render(el_name, args);
        return een9::form_http_server_response_200("text/html", page);
    }

+    json::JSON jsonify_html_message_list(const std::vector<HtmlMsgBox>& messages) {
+        json::JSON jmessages(json::array);
+        for (size_t i = 0; i < messages.size(); i++) {
+            jmessages[i]["class"].asString() = messages[i].class_;
+            jmessages[i]["text"].asString() = messages[i].text;
+        }
+        return jmessages;
+    }
+
+    std::string page_E404(WorkerGuestData &wgd) {
+        return een9::form_http_server_response_404("text/html",
+            wgd.templater->render("err-404", {}));
+    }
+
    /* ========================= API =========================*/
-
-
-    std::string when_internalapi_pollevents(WorkerGuestData& wgd,
-            const een9::ClientRequest& req, int64_t uid) {
+    std::string when_internalapi(WorkerGuestData& wgd, const een9::ClientRequest& req, int64_t uid,
+                                 const std::function<json::JSON(SqliteConnection&, int64_t, const json::JSON&)>& F) {
        const json::JSON& Sent = json::parse_str_flawless(req.body);
-        std::string result = json::generate_str(internalapi_pollEvents(*wgd.db, uid, Sent), json::print_pretty);
+        std::string result = json::generate_str(F(*wgd.db, uid, Sent), json::print_pretty);
        return een9::form_http_server_response_200("text/json", result);
    }

-    std::string when_internalapi_getchatlist(WorkerGuestData& wgd,
-                const een9::ClientRequest& req, int64_t uid) {
-        const json::JSON& Sent = json::parse_str_flawless(req.body);
-        std::string result = json::generate_str(internalapi_getChatList(*wgd.db, uid), json::print_pretty);
-        return een9::form_http_server_response_200("text/json", result);
+    std::string when_internalapi_chatpollevents(WorkerGuestData& wgd, const een9::ClientRequest& req, int64_t uid) {
+        return when_internalapi(wgd, req, uid, internalapi_chatPollEvents);
    }

-    std::string when_internalapi_getchatinfo(WorkerGuestData& wgd,
-            const een9::ClientRequest& req, int64_t uid) {
-        const json::JSON& Sent = json::parse_str_flawless(req.body);
-        std::string result = json::generate_str(internalapi_getChatInfo(*wgd.db, uid, Sent), json::print_pretty);
-        return een9::form_http_server_response_200("text/json", result);
+    std::string when_internalapi_chatlistpollevents(WorkerGuestData &wgd, const een9::ClientRequest &req, int64_t uid) {
+        return when_internalapi(wgd, req, uid, internalapi_chatListPollEvents);
    }

-    std::string when_internalapi_getchatmemberlist(WorkerGuestData& wgd,
-            const een9::ClientRequest& req, int64_t uid) {
-        const json::JSON& Sent = json::parse_str_flawless(req.body);
-        std::string result = json::generate_str(internalapi_getChatMemberList(*wgd.db, uid, Sent), json::print_pretty);
-        return een9::form_http_server_response_200("text/json", result);
+    std::string when_internalapi_getmessageneighbours(WorkerGuestData &wgd, const een9::ClientRequest &req, int64_t uid) {
+        return when_internalapi(wgd, req, uid, internalapi_getMessageNeighbours);
    }

-    std::string when_internalapi_getuserinfo(WorkerGuestData& wgd,
-            const een9::ClientRequest& req, int64_t uid) {
-        const json::JSON& Sent = json::parse_str_flawless(req.body);
-        std::string result = json::generate_str(internalapi_getUserInfo(*wgd.db, uid, Sent), json::print_pretty);
-        return een9::form_http_server_response_200("text/json", result);
+    std::string when_internalapi_sendmessage(WorkerGuestData &wgd, const een9::ClientRequest &req, int64_t uid) {
+        return when_internalapi(wgd, req, uid, internalapi_sendMessage);
    }

-    std::string when_internalapi_getmessageinfo(WorkerGuestData& wgd,
-            const een9::ClientRequest& req, int64_t uid) {
-        const json::JSON& Sent = json::parse_str_flawless(req.body);
-        std::string result = json::generate_str(internalapi_getMessageInfo(*wgd.db, uid, Sent), json::print_pretty);
-        return een9::form_http_server_response_200("text/json", result);
+    std::string when_internalapi_deletemessage(WorkerGuestData &wgd, const een9::ClientRequest &req, int64_t uid) {
+        return when_internalapi(wgd, req, uid, internalapi_deleteMessage);
+    }
+
+    std::string when_internalapi_addmembertochat(WorkerGuestData &wgd, const een9::ClientRequest &req, int64_t uid) {
+        return when_internalapi(wgd, req, uid, internalapi_addMemberToChat);
+    }
+
+    std::string when_internalapi_removememberfromchat(WorkerGuestData &wgd, const een9::ClientRequest &req, int64_t uid) {
+        return when_internalapi(wgd, req, uid, internalapi_removeMemberFromChat);
+    }
+
+    std::string when_internalapi_createchat(WorkerGuestData &wgd, const een9::ClientRequest &req, int64_t uid) {
+        return when_internalapi(wgd, req, uid, internalapi_createChat);
+    }
+
+    std::string when_internalapi_leavechat(WorkerGuestData &wgd, const een9::ClientRequest &req, int64_t uid) {
+        return when_internalapi(wgd, req, uid, internalapi_leaveChat);
    }
 }
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/client_server_interact.h
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/client_server_interact.h
@ -11,12 +11,14 @@
 #include <jsonincpp/jsonobj.h>
 #include <new_york_transit_line/templater.h>
 #include <memory>
+#include "../localizator.h"

 namespace iu9cawebchat {
    struct WorkerGuestData {
        /* Because templaters use libjsonincpp, they can't be READ by two thread simultaneously */
        std::unique_ptr<nytl::Templater> templater;
        std::unique_ptr<SqliteConnection> db;
+        std::unique_ptr<Localizator> locales;
    };

    void initial_extraction_of_all_the_useful_info_from_cookies(
@ -27,9 +29,17 @@ namespace iu9cawebchat {
            int64_t& ret_logged_in_user
        );

-    std::string RTEE(const std::string& el_name,
-        const json::JSON& config_presentation, WorkerGuestData& wgd,
-        const json::JSON& userinfo);
+    std::string http_R200(const std::string& el_name, WorkerGuestData& wgd,
+        const std::vector<const json::JSON*>& args);
+
+    struct HtmlMsgBox {
+        std::string class_;
+        std::string text;
+    };
+
+    json::JSON jsonify_html_message_list(const std::vector<HtmlMsgBox>& messages);
+
+    std::string page_E404(WorkerGuestData& wgd);

    /*  ========================== PAGES ================================== */

@ -43,28 +53,29 @@ namespace iu9cawebchat {
                               const een9::ClientRequest& req, const json::JSON& userinfo);

    std::string when_page_user(WorkerGuestData& wgd, const json::JSON& config_presentation,
-            const een9::ClientRequest& req, const json::JSON& userinfo);
+            const een9::ClientRequest& req, const std::vector<LoginCookie>& login_cookies, const json::JSON& userinfo);

+    std::string when_page_register(WorkerGuestData& wgd, const json::JSON& config_presentation,
+                    const een9::ClientRequest& req, const json::JSON& userinfo);

    /* ========================  API  ============================== */
+    std::string when_internalapi_chatpollevents(WorkerGuestData& wgd, const een9::ClientRequest& req, int64_t uid);

-    std::string when_internalapi_pollevents(WorkerGuestData& wgd,
-            const een9::ClientRequest& req, int64_t uid);
+    std::string when_internalapi_chatlistpollevents(WorkerGuestData& wgd, const een9::ClientRequest& req, int64_t uid);

-    std::string when_internalapi_getchatlist(WorkerGuestData& wgd,
-                const een9::ClientRequest& req, int64_t uid);
+    std::string when_internalapi_getmessageneighbours(WorkerGuestData& wgd, const een9::ClientRequest& req, int64_t uid);

-    std::string when_internalapi_getchatinfo(WorkerGuestData& wgd,
-            const een9::ClientRequest& req, int64_t uid);
+    std::string when_internalapi_sendmessage(WorkerGuestData &wgd, const een9::ClientRequest &req, int64_t uid);

-    std::string when_internalapi_getchatmemberlist(WorkerGuestData& wgd,
-            const een9::ClientRequest& req, int64_t uid);
+    std::string when_internalapi_deletemessage(WorkerGuestData &wgd, const een9::ClientRequest &req, int64_t uid);

-    std::string when_internalapi_getuserinfo(WorkerGuestData& wgd,
-            const een9::ClientRequest& req, int64_t uid);
+    std::string when_internalapi_addmembertochat(WorkerGuestData &wgd, const een9::ClientRequest &req, int64_t uid);

-    std::string when_internalapi_getmessageinfo(WorkerGuestData& wgd,
-            const een9::ClientRequest& req, int64_t uid);
+    std::string when_internalapi_removememberfromchat(WorkerGuestData &wgd, const een9::ClientRequest &req, int64_t uid);
+
+    std::string when_internalapi_createchat(WorkerGuestData &wgd, const een9::ClientRequest &req, int64_t uid);
+
+    std::string when_internalapi_leavechat(WorkerGuestData &wgd, const een9::ClientRequest &req, int64_t uid);
 }

 #endif
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/polling.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/polling.cpp
@ -0,0 +1,198 @@
+#include "server_data_interact.h"
+#include <assert.h>
+#include <engine_engine_number_9/baza_throw.h>
+#include "../debug.h"
+
+namespace iu9cawebchat {
+    json::JSON poll_update_chat_list_resp(SqliteConnection& conn, int64_t userId, int64_t LocalHistoryId) {
+        printf("Userid: %ld\n", userId);
+        json::JSON chatListUpdResp;
+        SqliteStatement my_membership_changes(conn,
+           "SELECT `chatId`, `role` FROM `user_chat_membership` WHERE `userId` = ?1 "
+           "AND `user_chatList_IncHistoryId` > ?2", {{1, userId}, {2, LocalHistoryId}});
+        json::jarr& myChats = chatListUpdResp["myChats"].asArray();
+        while (true) {
+            fsql_integer_or_null ev_chatId, usersRoleHere;
+            int status = sqlite_stmt_step(my_membership_changes, {{0, &ev_chatId}, {1, &usersRoleHere}}, {});
+            if (status != SQLITE_ROW)
+                break;
+            myChats.emplace_back();
+            json::JSON& myMembershipSt = myChats.back();
+            myMembershipSt["chatId"].asInteger() = json::Integer(ev_chatId.value);
+            myMembershipSt["myRoleHere"].asString() = stringify_user_chat_role(usersRoleHere.value);
+            if (usersRoleHere.value != user_chat_role_deleted) {
+                RowChat_Content CHAT = lookup_chat_content(conn, ev_chatId.value);
+                myMembershipSt["chatName"].asString() = CHAT.name;
+                myMembershipSt["chatNickname"].asString() = CHAT.nickname;
+            }
+        }
+        int64_t HistoryId = get_current_history_id_of_user_chatList(conn, userId);
+        chatListUpdResp["HistoryId"].asInteger() = json::Integer(HistoryId);
+        return chatListUpdResp;
+    }
+
+    void poll_update_chat_list(SqliteConnection& conn, int64_t userId, const json::JSON& Sent, json::JSON& Recv) {
+        Recv["status"].asInteger() = json::Integer(0l);
+        // todo: in libjsonincpp: get rid of Integer
+        Recv["chatListUpdResp"] = poll_update_chat_list_resp(conn, userId, Sent["chatListUpdReq"]["LocalHistoryId"].asInteger().get_int());
+    }
+
+    json::JSON make_messageSt_obj(int64_t id, int64_t senderUserId, bool exists, bool isSystem, const std::string& text) {
+        json::JSON messageSt;
+        messageSt["id"].asInteger() = json::Integer(id);
+        if (!isSystem)
+            messageSt["senderUserId"].asInteger() = json::Integer(senderUserId);
+        messageSt["exists"] = json::JSON(exists);
+        messageSt["isSystem"] = json::JSON(isSystem);
+        if (exists)
+            messageSt["text"].asString() = text;
+        return messageSt;
+    }
+
+    json::jarr poll_update_chat_resp_messages(SqliteConnection& conn, int64_t chatId, int64_t LocalHistoryId,
+        int64_t QSEG_A, int64_t QSEG_B) {
+
+        json::jarr messages;
+        SqliteStatement messages_changes(conn,
+            "SELECT `id`, `senderUserId`, `exists`, `isSystem`, `text` FROM `message` "
+            "WHERE `chatId` = ?1 AND ( `chat_IncHistoryId` > ?2 OR ( ?3 <= `id` AND `id` <= ?4 ) )",
+            {{1, chatId}, {2, LocalHistoryId}, {3, QSEG_A}, {4, QSEG_B}}, {});
+        while (true) {
+            fsql_integer_or_null msgId, msgSenderUserId, msgExists, msgIsSystem;
+            fsql_text8_or_null msgText;
+            int status = sqlite_stmt_step(messages_changes,
+                {{0, &msgId}, {1, &msgSenderUserId}, {2, &msgExists}, {3, &msgIsSystem}},
+                {{4, &msgText}});
+            if (status != SQLITE_ROW)
+                break;
+            messages.push_back(make_messageSt_obj(msgId.value, msgSenderUserId.value, msgExists.value,
+                msgIsSystem.value, msgText.value));
+        }
+        return messages;
+    }
+
+    json::jarr poll_update_chat_resp_members(SqliteConnection& conn, int64_t chatId, int64_t LocalHistoryId) {
+        json::jarr members;
+
+        SqliteStatement membership_changes(conn,
+                   "SELECT `userId`, `role` FROM `user_chat_membership` WHERE `chatId` = ?1 "
+                   "AND `chat_IncHistoryId` > ?2", {{1, chatId}, {2, LocalHistoryId}}, {});
+        while (true) {
+            fsql_integer_or_null alienUserId;
+            fsql_integer_or_null alienRoleHere;
+            int status = sqlite_stmt_step(membership_changes,
+                {{0, &alienUserId}, {1, &alienRoleHere}}, {});
+            if (status != SQLITE_ROW)
+                break;
+            members.emplace_back();
+            json::JSON& memberSt = members.back();
+            memberSt["userId"].asInteger() = json::Integer(alienUserId.value);
+            memberSt["roleHere"].asString() = stringify_user_chat_role(alienRoleHere.value);
+            if (alienRoleHere.value != user_chat_role_deleted) {
+                RowUser_Content alien = lookup_user_content(conn, alienUserId.value);
+                memberSt["name"].asString() = alien.name;
+                memberSt["nickname"].asString() = alien.nickname;
+            }
+        }
+        return members;
+    }
+
+    json::JSON poll_update_chat_ONE_MSG_resp(SqliteConnection& conn, int64_t chatId, int64_t selectedMsg) {
+        json::JSON chatUpdResp;
+
+        chatUpdResp["members"].asArray() = poll_update_chat_resp_members(conn, chatId, 0);
+
+
+        json::jarr& messages = chatUpdResp["messages"].asArray();
+        if (selectedMsg >= 0) {
+            RowMessage_Content msg = lookup_message_content(conn, chatId, selectedMsg);
+            messages.push_back(make_messageSt_obj(msg.id, msg.senderUserId, msg.exists, msg.isSystem, msg.text));
+        }
+
+        int64_t lastMsgId = get_lastMsgId_of_chat(conn, chatId);
+        chatUpdResp["lastMsgId"].asInteger() = json::Integer(lastMsgId);
+
+        int64_t HistoryId = get_current_history_id_of_chat(conn, chatId);
+        chatUpdResp["HistoryId"].asInteger() = json::Integer(HistoryId);
+        return chatUpdResp;
+    }
+
+    json::JSON poll_update_chat_important_segment_resp(SqliteConnection& conn, int64_t chatId, int64_t LocalHistoryId,
+        int64_t QSEG_A, int64_t QSEG_B) {
+
+        json::JSON chatUpdResp;
+
+        chatUpdResp["members"].asArray() = poll_update_chat_resp_members(conn, chatId, LocalHistoryId);
+        chatUpdResp["messages"].asArray() = poll_update_chat_resp_messages(conn, chatId, LocalHistoryId, QSEG_A, QSEG_B);
+
+        int64_t lastMsgId = get_lastMsgId_of_chat(conn, chatId);
+        chatUpdResp["lastMsgId"].asInteger() = json::Integer(lastMsgId);
+
+        int64_t HistoryId = get_current_history_id_of_chat(conn, chatId);
+        chatUpdResp["HistoryId"].asInteger() = json::Integer(HistoryId);
+        return chatUpdResp;
+    }
+
+    /* chat polling function MUST have one queer feature: it accepts a range of msgId, which are guaranteed to be
+     * lookud up. */
+    void poll_update_chat_important_segment(SqliteConnection& conn, const json::JSON& Sent, json::JSON& Recv,
+        int64_t QSEG_A, int64_t QSEG_B) {
+
+        Recv["status"].asInteger() = json::Integer(0l);
+        Recv["chatUpdResp"] = poll_update_chat_important_segment_resp(conn,
+            Sent["chatUpdReq"]["chatId"].asInteger().get_int(),
+            Sent["chatUpdReq"]["LocalHistoryId"].asInteger().get_int(), QSEG_A, QSEG_B);
+    }
+
+    void poll_update_chat(SqliteConnection& conn, const json::JSON& Sent, json::JSON& Recv) {
+        poll_update_chat_important_segment(conn, Sent, Recv, -1, -2);
+    }
+
+    json::JSON internalapi_chatPollEvents(SqliteConnection& conn, int64_t uid, const json::JSON& Sent) {
+        int64_t chatId = Sent["chatUpdReq"]["chatId"].asInteger().get_int();
+        if (get_role_of_user_in_chat(conn, uid, chatId) == user_chat_role_deleted)
+            een9_THROW("chatPollEvents: trying to access chat that user does not belong to");
+        json::JSON Recv;
+        poll_update_chat(conn, Sent, Recv);
+        return Recv;
+    }
+
+    json::JSON internalapi_chatListPollEvents(SqliteConnection& conn, int64_t uid, const json::JSON& Sent) {
+        json::JSON Recv;
+        poll_update_chat_list(conn, uid, Sent, Recv);
+        return Recv;
+    }
+
+
+    /* Reznya */
+    json::JSON internalapi_getMessageNeighbours(SqliteConnection& conn, int64_t uid, const json::JSON& Sent) {
+        int64_t chatId = Sent["chatUpdReq"]["chatId"].asInteger().get_int();
+        if (get_role_of_user_in_chat(conn, uid, chatId) == user_chat_role_deleted)
+            een9_THROW("Authentication failure");
+        int64_t lastMsgId = get_lastMsgId_of_chat(conn, chatId);
+        bool dir_forward = Sent["direction"].asString() == "forward";
+        int64_t amount = Sent["amount"].asInteger().get_int();
+        int64_t K = Sent["msgId"].asInteger().get_int();
+        if (amount <= 0 || amount > 15)
+            een9_THROW("Incorrect amount");
+        json::JSON Recv;
+        int64_t qBeg = -1;
+        int64_t qEnd = -2;
+        if (lastMsgId >= 0) {
+            if (K < 0) {
+                if (dir_forward)
+                    een9_THROW("Can't go from the top of chat");
+                qBeg = std::max(0l, lastMsgId - amount + 1);
+                qEnd = lastMsgId;
+            } else if (dir_forward) {
+                qBeg = K + 1;
+                qEnd = K + amount;
+            } else {
+                qBeg = K - amount;
+                qEnd = K - 1;
+            }
+        }
+        poll_update_chat_important_segment(conn, Sent, Recv, qBeg, qEnd);
+        return Recv;
+    }
+}
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/server_data_interact.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/server_data_interact.cpp
@ -2,8 +2,13 @@

 #include <engine_engine_number_9/baza_throw.h>
 #include <engine_engine_number_9/http_structures/cookies.h>
+#include "../str_fields.h"

 namespace iu9cawebchat {
+    json::JSON at_api_error_gen_bad_recv(int64_t code) {
+        return json::JSON(json::jdict{{"status", json::JSON(code)}});
+    }
+    
    const char* stringify_user_chat_role(int64_t role) {
        if (role == user_chat_role_admin)
            return "admin";
@ -27,7 +32,7 @@ namespace iu9cawebchat {
        return -1;
    }

-    std::string find_user_name (SqliteConnection& conn, int64_t uid) {
+    std::string get_user_name (SqliteConnection& conn, int64_t uid) {
        een9_ASSERT(uid >= 0, "Are you crazy?");
        SqliteStatement sql_req(conn,
           "SELECT `name` FROM `user` WHERE `id` = ?1",
@ -50,7 +55,20 @@ namespace iu9cawebchat {
        fsql_text8_or_null name_col;
        int status = sqlite_stmt_step(sql_req, {}, {{0, &nickname_col}, {1, &name_col}});
        if (status == SQLITE_ROW) {
-            return {std::move(nickname_col.value), std::move(name_col.value)};
+            return {uid, std::move(nickname_col.value), std::move(name_col.value)};
+        }
+        een9_THROW("No such user");
+    }
+
+    RowUser_Content lookup_user_content_by_nickname(SqliteConnection& conn, const std::string& nickname) {
+        SqliteStatement sql_req(conn,
+           "SELECT `id`, `name` FROM `user` WHERE `nickname` = ?1",
+           {}, {{1, nickname}});
+        fsql_integer_or_null id_col;
+        fsql_text8_or_null name_col;
+        int status = sqlite_stmt_step(sql_req, {{0, &id_col}}, {{1, &name_col}});
+        if (status == SQLITE_ROW) {
+            return {id_col.value, nickname, std::move(name_col.value)};
        }
        een9_THROW("No such user");
    }
@ -65,7 +83,22 @@ namespace iu9cawebchat {
        fsql_integer_or_null last_msg_id_col;
        int status = sqlite_stmt_step(sql_req, {{2, &last_msg_id_col}}, {{0, &nickname_col}, {1, &name_col}});
        if (status == SQLITE_ROW) {
-            return {std::move(nickname_col.value), std::move(name_col.value),
+            return {chatId, std::move(nickname_col.value), std::move(name_col.value),
+                last_msg_id_col.exist ? last_msg_id_col.value : -1};
+        }
+        een9_THROW("No such chat");
+    }
+
+    RowChat_Content lookup_chat_content_by_nickname(SqliteConnection &conn, const std::string& nickname) {
+        SqliteStatement sql_req(conn,
+           "SELECT `id`, `name`, `lastMsgId` FROM `chat` WHERE `nickname` = ?1",
+           {}, {{1, nickname}});
+        fsql_integer_or_null id_col;
+        fsql_text8_or_null name_col;
+        fsql_integer_or_null last_msg_id_col;
+        int status = sqlite_stmt_step(sql_req, {{0, &id_col}, {2, &last_msg_id_col}}, {{1, &name_col}});
+        if (status == SQLITE_ROW) {
+            return {id_col.value, nickname, std::move(name_col.value),
                last_msg_id_col.exist ? last_msg_id_col.value : -1};
        }
        een9_THROW("No such chat");
@ -73,15 +106,15 @@ namespace iu9cawebchat {

    RowMessage_Content lookup_message_content(SqliteConnection& conn, int64_t chatId, int64_t msgId) {
        SqliteStatement req(conn,
-            "SELECT `previousId`, `senderUserId`, `exists`, `isSystem`, `text` FROM `message` WHERE "
+            "SELECT `senderUserId`, `exists`, `isSystem`, `text` FROM `message` WHERE "
            "`chatId` = ?1 AND `id` = ?2", {{1, chatId}, {2, msgId}}, {});
-        fsql_integer_or_null previousId, senderUserId, exists, isSystem;
+        fsql_integer_or_null senderUserId, exists, isSystem;
        fsql_text8_or_null msg_text;
-        int status = sqlite_stmt_step(req, {{0, &previousId}, {1, &senderUserId}, {2, &exists}, {3, &isSystem}},
-            {{4, &msg_text}});
+        int status = sqlite_stmt_step(req, {{0, &senderUserId}, {1, &exists}, {2, &isSystem}},
+            {{3, &msg_text}});
        if (status == SQLITE_ROW) {
-            return {(bool)isSystem.value, msg_text.value, senderUserId.exist ? senderUserId.value : -1,
-            previousId.exist ? previousId.value : -1};
+            return {msgId, senderUserId.exist ? senderUserId.value : -1, (bool)exists.value,
+                (bool)isSystem.value, msg_text.value};
        }
        een9_THROW("No such message");
    }
@ -98,5 +131,116 @@ namespace iu9cawebchat {
        return user_chat_role_deleted;
    }

-    /* All the api calls processing is done in dedicated files */
+    int64_t get_lastMsgId_of_chat(SqliteConnection &conn, int64_t chatId) {
+        een9_ASSERT(chatId >= 0, "Are you crazy?");
+        SqliteStatement sql_req(conn,
+           "SELECT `lastMsgId` FROM `chat` WHERE `id` = ?1", {{1, chatId}}, {});
+        fsql_integer_or_null last_msg_id_col;
+        int status = sqlite_stmt_step(sql_req, {{0, &last_msg_id_col}}, {});
+        if (status == SQLITE_ROW) {
+            return last_msg_id_col.exist ? last_msg_id_col.value : -1;
+        }
+        een9_THROW("No such chat");
+    }
+
+    /* All the api calls processing is done in dedicated files.
+     * All functions related to polling are defined in api_pollevents.cpp */
+
+    int64_t get_current_history_id_of_chat(SqliteConnection& conn, int64_t chatId) {
+        SqliteStatement req(conn, "SELECT `it_HistoryId` FROM `chat` WHERE `id` = ?1", {{1, chatId}}, {});
+        fsql_integer_or_null HistoryId;
+        int status = sqlite_stmt_step(req, {{0, &HistoryId}}, {});
+        een9_ASSERT_pl(status == SQLITE_ROW);
+        return HistoryId.value;
+    }
+
+    int64_t get_current_history_id_of_user_chatList(SqliteConnection& conn, int64_t userId) {
+        SqliteStatement req(conn, "SELECT `chatList_HistoryId` FROM `user` WHERE `id` = ?1", {{1, userId}}, {});
+        fsql_integer_or_null HistoryId;
+        int status = sqlite_stmt_step(req, {{0, &HistoryId}}, {});
+        een9_ASSERT_pl(status == SQLITE_ROW);
+        return HistoryId.value;
+    }
+
+
+    // todo: extract useful clues from deprecated code.
+    // todo: deprecated code goes here:
+    /* !!! DEPRECATED FUNCTION */
+    json::JSON toremoveinternalapi_getChatList(SqliteConnection& conn, int64_t uid, const json::JSON& Sent) {
+        json::JSON Recv;
+        Recv["status"] = json::JSON(0l);
+        Recv["chats"] = json::JSON(json::array);
+        std::vector<json::JSON>& chats = Recv["chats"].asArray();
+        SqliteStatement req(conn,
+            "SELECT `chat`.`id`, `chat`.`nickname`, `chat`.`name`, `chat`.`lastMsgId`, "
+            "`user_chat_membership`.`role` FROM `chat` "
+            "RIGHT JOIN `user_chat_membership` ON `chat`.`id` = `user_chat_membership`.`chatId` "
+            "WHERE `user_chat_membership`.`userId` = ?1 ", {{1, uid}}, {});
+        while (true) {
+            fsql_integer_or_null chat_id;
+            fsql_text8_or_null chat_nickname, chat_name;
+            fsql_integer_or_null chat_lastMsgId, role_here;
+            int status = sqlite_stmt_step(req, {{0, &chat_id}, {3, &chat_lastMsgId}, {4, &role_here}},
+                {{1, &chat_nickname}, {2, &chat_name}});
+            if (status != SQLITE_ROW)
+                break;
+            chats.emplace_back();
+            json::JSON& chat = chats.back();
+            chat["id"] = json::JSON(chat_id.value);
+            chat["content"]["nickname"] = json::JSON(chat_nickname.value);
+            chat["content"]["name"] = json::JSON(chat_name.value);
+            chat["content"]["lastMsgId"] = json::JSON(chat_lastMsgId.exist ? chat_lastMsgId.value : -1);
+            chat["content"]["roleHere"] = json::JSON(stringify_user_chat_role(role_here.value));
+        }
+        return Recv;
+    }
+
+    /* !!! DEPRECATED FUNCTION */
+    json::JSON toremoveinternalapi_getChatMemberList(SqliteConnection& conn, int64_t uid, const json::JSON& Sent) {
+        int64_t chatId = Sent["id"].asInteger().get_int();
+        int64_t my_role_here = get_role_of_user_in_chat(conn, uid, chatId);
+        if (my_role_here == user_chat_role_deleted)
+            een9_THROW("Unauthorized user tries to access internalapi_getChatInfo");
+        json::JSON Recv;
+        Recv["status"] = json::JSON(0l);
+        Recv["members"] = json::JSON(json::array);
+        std::vector<json::JSON>& members = Recv["members"].asArray();
+        SqliteStatement req(conn,
+            "SELECT `user`.`id`, `user`.`nickname`, `user`.`name`, `user_chat_membership`.`role` FROM "
+            "`user` RIGHT JOIN `user_chat_membership` ON `user`.`id` = `user_chat_membership`.`userId` "
+            "WHERE `user_chat_membership`.`chatId` = ?1",
+            {{1, chatId}}, {});
+        while (true) {
+            fsql_integer_or_null this_user_id;
+            fsql_text8_or_null this_user_nickname, this_user_name;
+            fsql_integer_or_null this_users_role;
+            int status = sqlite_stmt_step(req, {{0, &this_user_id}, {3, &this_users_role}},
+                {{1, &this_user_nickname}, {2, &this_user_name}});
+            if (status != SQLITE_ROW)
+                break;
+            members.emplace_back();
+            json::JSON& member = members.back();
+            member["id"] = json::JSON(this_user_id.value);
+            member["content"]["nickname"] = json::JSON(this_user_nickname.value);
+            member["content"]["name"] = json::JSON(this_user_name.value);
+            member["content"]["role"] = json::JSON(this_users_role.value);
+        }
+        return Recv;
+    }
+
+    bool is_nickname_taken(SqliteConnection& conn, const std::string& nickname) {
+        if (!check_nickname(nickname))
+            return true;
+        SqliteStatement req(conn, "SELECT EXISTS(SELECT 1 FROM `nickname` WHERE `it` = ?1)",
+            {}, {{1, nickname}});
+        fsql_integer_or_null r{true, 0};
+        int status = sqlite_stmt_step(req, {{0, &r}}, {});
+        return r.value;
+    }
+
+    void reserve_nickname(SqliteConnection& conn, const std::string& nickname) {
+        if (!check_nickname(nickname))
+            een9_THROW("PRECAUTION! Trying to insert incorrect nickname into nickname table");
+        sqlite_nooutput(conn, "INSERT INTO `nickname` (`it`) VALUES (?1)", {}, {{1, nickname}});
+    }
 }
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/server_data_interact.h
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/server_data_interact.h
@ -8,6 +8,8 @@
 #include <jsonincpp/string_representation.h>

 namespace iu9cawebchat {
+    json::JSON at_api_error_gen_bad_recv(int64_t code = -1);
+
    constexpr int64_t user_chat_role_admin = 1;
    constexpr int64_t user_chat_role_regular = 2;
    constexpr int64_t user_chat_role_read_only = 3;
@ -16,41 +18,77 @@ namespace iu9cawebchat {
    const char* stringify_user_chat_role(int64_t role);

    int64_t find_user_by_credentials (SqliteConnection& conn, const std::string& nickname, const std::string& password);
-    std::string find_user_name (SqliteConnection& conn, int64_t uid);
+    std::string get_user_name (SqliteConnection& conn, int64_t uid);

    struct RowUser_Content {
+        int64_t id;
        std::string nickname;
        std::string name;
    };

    struct RowChat_Content {
+        int64_t id;
        std::string nickname;
        std::string name;
        int64_t lastMsgId;  // Negative if it does not exist
    };

    RowUser_Content lookup_user_content(SqliteConnection& conn, int64_t uid);
+    RowUser_Content lookup_user_content_by_nickname(SqliteConnection& conn, const std::string& nickname);
+    /* Does not make authorization check */
    RowChat_Content lookup_chat_content(SqliteConnection& conn, int64_t chatId);
+    RowChat_Content lookup_chat_content_by_nickname(SqliteConnection &conn, const std::string& nickname);

    struct RowMessage_Content {
+        int64_t id;
+        int64_t senderUserId;
+        bool exists;
        bool isSystem;
        std::string text;
-        int64_t senderUserId;
-        int64_t previous = -1;
    };

    RowMessage_Content lookup_message_content(SqliteConnection& conn, int64_t chatId, int64_t msgId);

+    /* Does not make authorization check */
    int64_t get_role_of_user_in_chat(SqliteConnection& conn, int64_t userId, int64_t chatId);
+    /* Does not make authorization check */
+    int64_t get_lastMsgId_of_chat(SqliteConnection& conn, int64_t chatId);

-    /* ============================= API ====================================*/
-    json::JSON internalapi_pollEvents(SqliteConnection& conn, int64_t uid, const json::JSON& Sent);
-    json::JSON internalapi_getChatList(SqliteConnection& conn, int64_t uid);
-    json::JSON internalapi_getChatInfo(SqliteConnection& conn, int64_t uid, const json::JSON& Sent);
-    json::JSON internalapi_getChatMemberList(SqliteConnection& conn, int64_t uid, const json::JSON& Sent);
-    json::JSON internalapi_getUserInfo(SqliteConnection& conn, int64_t uid, const json::JSON& Sent);
-    json::JSON internalapi_getMessageInfo(SqliteConnection& conn, int64_t uid, const json::JSON& Sent);
-    // todo: complete the list
+    int64_t get_current_history_id_of_chat(SqliteConnection& conn, int64_t chatId);
+    int64_t get_current_history_id_of_user_chatList(SqliteConnection& conn, int64_t userId);
+
+    json::JSON poll_update_chat_list_resp(SqliteConnection& conn, int64_t userId, int64_t LocalHistoryId);
+    void poll_update_chat_list(SqliteConnection& conn, int64_t userId, const json::JSON& Sent, json::JSON& Recv);
+
+    json::JSON poll_update_chat_ONE_MSG_resp(SqliteConnection& conn, int64_t chatId, int64_t selectedMsg);
+    void poll_update_chat(SqliteConnection& conn, const json::JSON& Sent, json::JSON& Recv);
+
+    void alter_user_chat_role(SqliteConnection& conn, int64_t chatId, int64_t alienUserId, int64_t role);
+    void make_her_a_member_of_the_midnight_crew(SqliteConnection& conn, int64_t chatId, int64_t alienUserId, int64_t role);
+    void kick_from_chat(SqliteConnection& conn, int64_t chatId, int64_t alienUserId);
+
+    bool is_nickname_taken(SqliteConnection& conn, const std::string& nickname);
+    void reserve_nickname(SqliteConnection& conn, const std::string& nickname);
+
+    void insert_new_message(SqliteConnection& conn, int64_t uid, int64_t chatId, const std::string& text, bool isSystem);
+    void insert_system_message_svo(SqliteConnection& conn, int64_t chatId,
+        int64_t subject, const std::string& verb, int64_t object);
+
+    /* ============================= API ==================================== */
+    json::JSON internalapi_chatPollEvents(SqliteConnection& conn, int64_t uid, const json::JSON& Sent);
+    json::JSON internalapi_chatListPollEvents(SqliteConnection& conn, int64_t uid, const json::JSON& Sent);
+    json::JSON internalapi_getMessageNeighbours(SqliteConnection& conn, int64_t uid, const json::JSON& Sent);
+    json::JSON internalapi_sendMessage(SqliteConnection& conn, int64_t uid, const json::JSON& Sent);
+    json::JSON internalapi_deleteMessage(SqliteConnection& conn, int64_t uid, const json::JSON& Sent);
+    json::JSON internalapi_addMemberToChat(SqliteConnection& conn, int64_t uid, const json::JSON& Sent);
+    json::JSON internalapi_removeMemberFromChat(SqliteConnection& conn, int64_t uid, const json::JSON& Sent);
+    json::JSON internalapi_createChat(SqliteConnection& conn, int64_t uid, const json::JSON& Sent);
+    json::JSON internalapi_leaveChat(SqliteConnection& conn, int64_t uid, const json::JSON& Sent);
+
+    /**/
+    void add_user(SqliteConnection& conn, const std::string& nickname, const std::string& name,
+        const std::string& password, const std::string& bio, int64_t forced_id = -1);
+    std::string admin_control_procedure(SqliteConnection& conn, const std::string& req, bool& termination);
 }

 #endif
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_api_getchatinfo.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_api_getchatinfo.cpp
@ -1,19 +0,0 @@
-#include "server_data_interact.h"
-#include <engine_engine_number_9/baza_throw.h>
-
-namespace iu9cawebchat {
-    json::JSON internalapi_getChatInfo(SqliteConnection& conn, int64_t uid, const json::JSON& Sent) {
-        int64_t chatId = Sent["id"].g().asInteger().get_int();
-        int64_t my_role_here = get_role_of_user_in_chat(conn, uid, chatId);
-        if (my_role_here == user_chat_role_deleted)
-            een9_THROW("Unauthorized user tries to access internalapi_getChatInfo");
-        json::JSON Recv;
-        Recv["status"] = json::JSON(0l);
-        RowChat_Content content = lookup_chat_content(conn, chatId);
-        Recv["name"] = json::JSON(content.name);
-        Recv["nickname"] = json::JSON(content.nickname);
-        Recv["lastMsgId"] = json::JSON(content.lastMsgId);
-        Recv["roleHere"] = json::JSON(stringify_user_chat_role(my_role_here));
-        return Recv;
-    }
-}
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_api_getchatlist.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_api_getchatlist.cpp
@ -1,33 +0,0 @@
-#include "server_data_interact.h"
-#include <engine_engine_number_9/baza_throw.h>
-
-namespace iu9cawebchat {
-    json::JSON internalapi_getChatList(SqliteConnection& conn, int64_t uid) {
-        json::JSON Recv;
-        Recv["status"] = json::JSON(0l);
-        Recv["chats"] = json::JSON(json::array);
-        std::vector<json::JSON>& chats = Recv["chats"].g().asArray();
-        SqliteStatement req(conn,
-            "SELECT `chat`.`id`, `chat`.`nickname`, `chat`.`name`, `chat`.`lastMsgId`, "
-            "`user_chat_membership`.`role` FROM `chat` "
-            "RIGHT JOIN `user_chat_membership` ON `chat`.`id` = `user_chat_membership`.`chatId` "
-            "WHERE `user_chat_membership`.`userId` = ?1 ", {{1, uid}}, {});
-        while (true) {
-            fsql_integer_or_null chat_id;
-            fsql_text8_or_null chat_nickname, chat_name;
-            fsql_integer_or_null chat_lastMsgId, role_here;
-            int status = sqlite_stmt_step(req, {{0, &chat_id}, {3, &chat_lastMsgId}, {4, &role_here}},
-                {{1, &chat_nickname}, {2, &chat_name}});
-            if (status != SQLITE_ROW)
-                break;
-            chats.emplace_back();
-            json::JSON& chat = chats.back();
-            chat["id"] = json::JSON(chat_id.value);
-            chat["content"]["nickname"] = json::JSON(chat_nickname.value);
-            chat["content"]["name"] = json::JSON(chat_name.value);
-            chat["content"]["lastMsgId"] = json::JSON(chat_lastMsgId.exist ? chat_lastMsgId.value : -1);
-            chat["content"]["roleHere"] = json::JSON(stringify_user_chat_role(role_here.value));
-        }
-        return Recv;
-    }
-}
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_api_getchatmemberlist.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_api_getchatmemberlist.cpp
@ -1,36 +0,0 @@
-#include "server_data_interact.h"
-#include <engine_engine_number_9/baza_throw.h>
-
-namespace iu9cawebchat {
-    json::JSON internalapi_getChatMemberList(SqliteConnection& conn, int64_t uid, const json::JSON& Sent) {
-        int64_t chatId = Sent["id"].g().asInteger().get_int();
-        int64_t my_role_here = get_role_of_user_in_chat(conn, uid, chatId);
-        if (my_role_here == user_chat_role_deleted)
-            een9_THROW("Unauthorized user tries to access internalapi_getChatInfo");
-        json::JSON Recv;
-        Recv["status"] = json::JSON(0l);
-        Recv["members"] = json::JSON(json::array);
-        std::vector<json::JSON>& members = Recv["members"].g().asArray();
-        SqliteStatement req(conn,
-            "SELECT `user`.`id`, `user`.`nickname`, `user`.`name`, `user_chat_membership`.`role` FROM "
-            "`user` RIGHT JOIN `user_chat_membership` ON `user`.`id` = `user_chat_membership`.`userId` "
-            "WHERE `user_chat_membership`.`chatId` = ?1",
-            {{1, chatId}}, {});
-        while (true) {
-            fsql_integer_or_null this_user_id;
-            fsql_text8_or_null this_user_nickname, this_user_name;
-            fsql_integer_or_null this_users_role;
-            int status = sqlite_stmt_step(req, {{0, &this_user_id}, {3, &this_users_role}},
-                {{1, &this_user_nickname}, {2, &this_user_name}});
-            if (status != SQLITE_ROW)
-                break;
-            members.emplace_back();
-            json::JSON& member = members.back();
-            member["id"] = json::JSON(this_user_id.value);
-            member["content"]["nickname"] = json::JSON(this_user_nickname.value);
-            member["content"]["name"] = json::JSON(this_user_name.value);
-            member["content"]["role"] = json::JSON(this_users_role.value);
-        }
-        return Recv;
-    }
-}
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_api_getmessageinfo.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_api_getmessageinfo.cpp
@ -1,21 +0,0 @@
-#include "server_data_interact.h"
-#include <engine_engine_number_9/baza_throw.h>
-
-namespace iu9cawebchat {
-    /* This is literally the most dumb and useless query */
-    json::JSON internalapi_getMessageInfo(SqliteConnection& conn, int64_t uid, const json::JSON& Sent) {
-        int64_t chatId = Sent["chatId"].g().asInteger().get_int();
-        int64_t msgId = Sent["id"].g().asInteger().get_int();
-        if (get_role_of_user_in_chat(conn, uid, chatId) == user_chat_role_deleted)
-            een9_THROW("Authentication failure");
-        json::JSON Recv;
-        Recv["status"] = json::JSON(0l);
-        RowMessage_Content content = lookup_message_content(conn, chatId, msgId);
-        Recv["text"] = json::JSON(content.text);
-        Recv["isSystem"] = json::JSON(content.isSystem);
-        Recv["sender"] = json::JSON(content.senderUserId);
-        // todo: sync that addition with api documentation
-        Recv["previous"] = json::JSON(content.previous);
-        return Recv;
-    }
-}
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_api_getuserinfo.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_api_getuserinfo.cpp
@ -1,13 +0,0 @@
-#include "server_data_interact.h"
-
-namespace iu9cawebchat {
-    json::JSON internalapi_getUserInfo(SqliteConnection& conn, int64_t uid, const json::JSON& Sent) {
-        int64_t otherUserId = Sent["id"].g().asInteger().get_int();
-        json::JSON Recv;
-        Recv["status"] = json::JSON(0l);
-        RowUser_Content content = lookup_user_content(conn, otherUserId);
-        Recv["name"] = json::JSON(content.name);
-        Recv["nickname"] = json::JSON(content.nickname);
-        return Recv;
-    }
-}
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_api_pollevents.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_api_pollevents.cpp
@ -1,132 +0,0 @@
-#include "server_data_interact.h"
-#include <engine_engine_number_9/baza_throw.h>
-
-namespace iu9cawebchat {
-    int64_t get_current_history_id_of_chat(SqliteConnection& conn, int64_t chatId) {
-        SqliteStatement req(conn, "SELECT `it_HistoryId` FROM `chat` WHERE `id` = ?1", {{1, chatId}}, {});
-        fsql_integer_or_null HistoryId;
-        int status = sqlite_stmt_step(req, {{0, &HistoryId}}, {});
-        een9_ASSERT_pl(status == SQLITE_ROW);
-        return HistoryId.value;
-    }
-
-    int64_t get_current_history_id_of_user_chatList(SqliteConnection& conn, int64_t userId) {
-        SqliteStatement req(conn, "SELECT `chatList_HistoryId` FROM `user` WHERE `id` = ?1", {{1, userId}}, {});
-        fsql_integer_or_null HistoryId;
-        int status = sqlite_stmt_step(req, {{0, &HistoryId}}, {});
-        een9_ASSERT_pl(status == SQLITE_ROW);
-        return HistoryId.value;
-    }
-
-    void internalapi_pollEvents_in_chat_collect_membership_events(SqliteConnection& conn,
-        std::vector<json::JSON>& events, int64_t chatId, int64_t LocalHistoryId) {
-        SqliteStatement membership_changes(conn,
-                    "SELECT `userId`, `role`, FROM `user_chat_membership` WHERE `chatId` = ?1 "
-                    "AND `chat_IncHistoryId` > ?2", {{1, chatId}, {2, LocalHistoryId}}, {});
-        fsql_integer_or_null ev_userId;
-        fsql_integer_or_null ev_user_role;
-        while (true) {
-            int status = sqlite_stmt_step(membership_changes,
-            {{0, &ev_userId}, {1, &ev_user_role}}, {});
-            if (status != SQLITE_ROW)
-                break;
-            events.emplace_back();
-            json::JSON& event = events.back();
-            event["member"] = json::JSON(ev_userId.value);
-            if (ev_user_role.value == user_chat_role_deleted) {
-                event["type"] = json::JSON("removedMember");
-            } else {
-                event["type"] = json::JSON("addedMember");
-                RowUser_Content USER = lookup_user_content(conn, ev_userId.value);
-                event["content"]["name"] = json::JSON(USER.name);
-                event["content"]["nickname"] = json::JSON(USER.nickname);
-                event["content"]["role"] = json::JSON(stringify_user_chat_role(ev_user_role.value));
-            }
-            events.push_back(event);
-        }
-    }
-
-    void internalapi_pollEvents_in_chat_collect_messages_events(SqliteConnection& conn,
-        std::vector<json::JSON>& events, int64_t chatId, int64_t LocalHistoryId) {
-        SqliteStatement messages_changes(conn,
-            "SELECT `id`, `previous`, `senderUserId`, `exists`, `isSystem`, `text` FROM `messages` WHERE "
-            "WHERE `chatId` = ?1 AND `chat_IncHistoryId` > ?2", {{1, chatId}, {2, LocalHistoryId}}, {});
-        fsql_integer_or_null ev_msgId, ev_previousMsgId, msgSenderUserId, msgExists, msgIsSystem;
-        fsql_text8_or_null msgText;
-        while (true) {
-            int status = sqlite_stmt_step(messages_changes,
-                {{0, &ev_msgId}, {1, &ev_previousMsgId}, {2, &msgSenderUserId}, {3, &msgExists}, {4, &msgIsSystem}},
-                {{5, &msgText}});
-            if (status != SQLITE_ROW)
-                break;
-            events.emplace_back();
-            json::JSON& event = events.back();
-            event["type"] = json::JSON("newMessage");
-            event["id"] = json::JSON(ev_msgId.value);
-            event["previous"] = json::JSON(ev_previousMsgId.value);
-            event["content"]["sender"] = json::JSON(msgSenderUserId.value);
-            event["content"]["isSystem"] = json::JSON((bool)msgIsSystem.value);
-            event["content"]["text"] = json::JSON(msgText.value);
-            events.push_back(event);
-        }
-    }
-
-    void internalapi_pollEvents_in_user_chatList_collect_events(SqliteConnection& conn,
-        std::vector<json::JSON>& events, int64_t userId, int64_t LocalHistoryId) {
-        SqliteStatement membership_changes(conn,
-            "SELECT `chatId`, `role` FROM `user_chat_membership` WHERE `userId` = ?1 "
-            "AND `user_chatList_IncHistoryId` > ?2", {{1, userId}, {2, LocalHistoryId}});
-        fsql_integer_or_null ev_chatId, usersRoleHere;
-        while (true) {
-            int status = sqlite_stmt_step(membership_changes, {{0, &ev_chatId}, {1, &usersRoleHere}}, {});
-            if (status != SQLITE_ROW)
-                break;
-            events.emplace_back();
-            json::JSON& event = events.back();
-            event["id"] = json::JSON(ev_chatId.value);
-            if (usersRoleHere.value == user_chat_role_deleted) {
-                event["type"] = json::JSON("removedChat");
-            } else {
-                event["type"] = json::JSON("addedChat");
-                RowChat_Content CHAT = lookup_chat_content(conn, ev_chatId.value);
-                event["content"]["name"] = json::JSON(CHAT.name);
-                event["content"]["nickname"] = json::JSON(CHAT.nickname);
-                event["content"]["lastMsgId"] = json::JSON(CHAT.lastMsgId);
-                event["content"]["roleHere"] = json::JSON(stringify_user_chat_role(usersRoleHere.value));
-            }
-        }
-    }
-
-    json::JSON internalapi_pollEvents(SqliteConnection& conn, int64_t uid, const json::JSON& Sent) {
-        json::JSON Recv;
-        Recv["status"] = json::JSON(0l);
-        Recv["update"] = json::JSON(json::array);
-        const std::vector<json::JSON>& req_scope = Sent["scope"].g().asArray();
-        std::vector<json::JSON>& updated = Recv["update"].g().asArray();
-        for (const json::JSON& hist_entity_request: req_scope) {
-            updated.emplace_back();
-            json::JSON& hist_entity_response = updated.back();
-            hist_entity_response["type"] = hist_entity_request["type"].g();
-            hist_entity_response["events"] = json::JSON(json::array);
-            std::vector<json::JSON>& events = hist_entity_response["events"].g().asArray();
-            const int64_t LocalHistoryId = hist_entity_request["LocalHistoryId"].g().asInteger().get_int();
-            if (hist_entity_request["type"].g().asString() == "chat") {
-                int64_t chatId = hist_entity_request["chatId"].g().asInteger().get_int();
-                if (get_role_of_user_in_chat(conn, uid, chatId) == user_chat_role_deleted)
-                    een9_THROW("internalapi/pollEvents: trying to access chat that user does not belong to");
-                hist_entity_response["chatId"] = json::JSON(chatId);
-                hist_entity_response["HistoryId"] = json::JSON(get_current_history_id_of_chat(conn, chatId));
-                /* Two classes of 'real events' can happen to chat: membership table change, message table change */
-                /* Here, I collect membership changes (related to this chat) */
-                internalapi_pollEvents_in_chat_collect_membership_events(conn, events, chatId, LocalHistoryId);
-                /* Here, I collect message changes (related to this chat) */
-                internalapi_pollEvents_in_chat_collect_messages_events(conn, events, chatId, LocalHistoryId);
-            } else if (hist_entity_request["type"].g().asString() == "chatlist") {
-                hist_entity_response["HistotyId"] = json::JSON(get_current_history_id_of_user_chatList(conn, uid));
-                internalapi_pollEvents_in_user_chatList_collect_events(conn, events, uid, LocalHistoryId);
-            } else
-                een9_THROW("Bad request");
-        }
-        return Recv;
-    }
-}
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_chat.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_chat.cpp
@ -1,8 +1,61 @@
 #include "client_server_interact.h"

+#include <engine_engine_number_9/baza_throw.h>
+#include "../str_fields.h"
+
 namespace iu9cawebchat {
    std::string when_page_chat(WorkerGuestData& wgd, const json::JSON& config_presentation,
-            const een9::ClientRequest& req, const json::JSON& userinfo) {
-        return RTEE("chat", config_presentation, wgd, userinfo);
+        const een9::ClientRequest& req, const json::JSON& userinfo) {
+
+        std::vector<std::string> path_segs = {};
+        path_segs.reserve(4);
+        if (req.uri_path.empty() || req.uri_path[0] != '/')
+            return page_E404(wgd);
+        for (char ch: req.uri_path) {
+            if (ch == '/')
+                path_segs.emplace_back();
+            else
+                path_segs.back() += ch;
+        }
+        // Parameter, passed from server to javascript
+        std::string chat_nickname;
+        int64_t selected_message_id = -1;
+        if (path_segs.size() >= 2) {
+            chat_nickname = std::move(path_segs[1]);
+        }
+        if (!check_nickname(chat_nickname))
+            return page_E404(wgd);
+        bool show_chat_members = (path_segs[0] == "chat-members");
+        if (path_segs.size() == 4 && !show_chat_members) {
+            if (path_segs[2] != "m")
+                return page_E404(wgd);
+            selected_message_id = std::stoll(path_segs[3]);
+        } else if (path_segs.size() != 2) {
+            return page_E404(wgd);
+        }
+
+        if (userinfo.isNull())
+            return een9::form_http_server_response_303("/");
+
+        RowChat_Content chatInfo;
+        try {
+            chatInfo = lookup_chat_content_by_nickname(*wgd.db, chat_nickname);
+        } catch (const std::exception& e) {
+            return page_E404(wgd);
+        }
+        if (get_role_of_user_in_chat(*wgd.db, userinfo["uid"].asInteger().get_int(), chatInfo.id) == user_chat_role_deleted) {
+            return page_E404(wgd);
+        }
+
+        json::JSON openedchat;
+        openedchat["name"].asString() = chatInfo.name;
+        openedchat["nickname"].asString() = chatInfo.nickname;
+        openedchat["id"].asInteger() = json::Integer(chatInfo.id);
+        // -1 means that nothing was selected
+        openedchat["selectedMessageId"].asInteger() = json::Integer(selected_message_id);
+        json::JSON initial_chatUpdResp = poll_update_chat_ONE_MSG_resp(*wgd.db, chatInfo.id, selected_message_id);
+        if (show_chat_members)
+            return http_R200("chat-members", wgd, {&config_presentation, &userinfo, &openedchat, &initial_chatUpdResp});
+        return http_R200("chat", wgd, {&config_presentation, &userinfo, &openedchat, &initial_chatUpdResp});
    }
 }
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_list_rooms.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_list_rooms.cpp
@ -6,6 +6,9 @@ namespace iu9cawebchat {
        if (userinfo.isNull()) {
            return een9::form_http_server_response_303("/login");
        }
-        return RTEE("list-rooms", config_presentation, wgd, userinfo);
+        json::JSON initial_chatListUpdResp = poll_update_chat_list_resp(*wgd.db,
+            userinfo["uid"].asInteger().get_int(), 0);
+        printf("%s\n", json::generate_str(initial_chatListUpdResp, json::print_pretty).c_str());
+        return http_R200("list-rooms", wgd, {&config_presentation, &userinfo, &initial_chatListUpdResp});
    }
 }
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_login.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_login.cpp
@ -18,21 +18,27 @@ namespace iu9cawebchat {
                    if (cmp.first == "password")
                        password = cmp.second;
                }
-                een9_ASSERT(check_nickname(nickname), "/login/accpet-data rejected impossible nickname");
-                een9_ASSERT(check_password(password), "/login/accpet-data rejected impossible password");
+                if (!check_nickname(nickname))
+                    een9_THROW("/login/accpet-data rejected impossible nickname");
+                if (!check_password(password))
+                    een9_THROW("/login/accpet-data rejected impossible password");
                uid = find_user_by_credentials(*wgd.db, nickname, password);

            } catch(const std::exception& e){}
            if (uid < 0) {
                printf("Redirecting back to /login because of incorrect credentials\n");
-                /* todo: Here I need to tell somehow to user (through fancy red box, maybe), that login was incorrect */
-                return RTEE("login", config_presentation, wgd, userinfo);
+                json::JSON msg_list = jsonify_html_message_list({{"",
+                    config_presentation["login"]["incorrect-nickname-or-password"].asString()}});
+                return http_R200("login", wgd, {&config_presentation, &userinfo, &msg_list});
            }
            std::vector<std::pair<std::string, std::string>> response_hlines;
            LoginCookie new_login_cookie = create_login_cookie(nickname, password);
            add_set_cookie_headers_to_login(login_cookies, response_hlines, new_login_cookie);
            return een9::form_http_server_response_303_spec_head("/", response_hlines);
        }
-        return RTEE("login", config_presentation, wgd, userinfo);
+        if (req.method != "GET")
+            een9_THROW("Bad method");
+        json::JSON empty_msg_list = json::JSON(json::array);
+        return http_R200("login", wgd, {&config_presentation, &userinfo, &empty_msg_list});
    }
 }
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_register.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_register.cpp
@ -0,0 +1,56 @@
+#include "client_server_interact.h"
+#include <engine_engine_number_9/form_data_structure/urlencoded_query.h>
+#include <engine_engine_number_9/baza_throw.h>
+#include <string.h>
+#include "../str_fields.h"
+
+namespace iu9cawebchat {
+    std::string when_page_register(WorkerGuestData& wgd, const json::JSON& config_presentation,
+                const een9::ClientRequest& req, const json::JSON& userinfo) {
+
+        const json::JSON& reg_pres = config_presentation["register"];
+        json::JSON msg_list = json::JSON(json::array);
+        if (req.method == "POST") {
+            if (userinfo.isNull() || userinfo["uid"].asInteger().get_int() != 0)
+                een9_THROW("Unauthorized access");
+            // Kod dlya dobaldal lkslkfjgk
+            std::vector<std::pair<std::string, std::string>> query = een9::split_html_query(req.body);
+            std::string nickname;
+            std::string name;
+            std::string password;
+            std::vector<HtmlMsgBox> problems;  // We explain problem to root
+            for (const std::pair<std::string, std::string>& cmp: query) {
+                if (cmp.first == "nickname")
+                    nickname = cmp.second;
+                if (cmp.first == "name")
+                    name = cmp.second;
+                if (cmp.first == "password")
+                    password = cmp.second;
+            }
+            if (!check_nickname(nickname)) {
+                problems.push_back({"", reg_pres["incorrect-nickname"].asString()});
+            }
+            if (!check_name(name)) {
+                problems.push_back({"", reg_pres["incorrect-name"].asString()});
+            }
+            if (!check_strong_password(password)) {
+                problems.push_back({"", reg_pres["incorrect-password"].asString()});
+            }
+            if (is_nickname_taken(*wgd.db, nickname)) {
+                problems.push_back({"", reg_pres["nickname-taken"].asString()});
+            }
+            if (problems.empty()) {
+                try {
+                    add_user(*wgd.db, nickname, name, password, "");
+                } catch (std::exception& err) {
+                    problems.push_back({"", reg_pres["add_user_error"].asString()});
+                }
+            }
+            msg_list = jsonify_html_message_list(problems);
+            return http_R200("register", wgd, {&config_presentation, &userinfo, &msg_list});
+        }
+        if (userinfo.isNull() || userinfo["uid"].asInteger().get_int() != 0)
+            return page_E404(wgd);
+        return http_R200("register", wgd, {&config_presentation, &userinfo, &msg_list});
+    }
+}
--- a/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_user.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_user.cpp
@ -1,8 +1,123 @@
 #include "client_server_interact.h"
+#include <engine_engine_number_9/form_data_structure/urlencoded_query.h>
+#include <engine_engine_number_9/baza_throw.h>
+#include <string.h>
+#include "../str_fields.h"
+#include "../login_cookie.h"

 namespace iu9cawebchat {
+    std::string get_user_bio(SqliteConnection& conn, int64_t userId) {
+        een9_ASSERT(userId >= 0, "Are you crazy?");
+        SqliteStatement sql_req(conn, "SELECT `bio` FROM `user` WHERE `id` = ?1", {{1, userId}}, {});
+        fsql_text8_or_null bio_col;
+        int status = sqlite_stmt_step(sql_req, {}, {{0, &bio_col}});
+        if (status == SQLITE_ROW)
+            return bio_col.value;
+        een9_THROW("No such user");
+    }
+
+    static const char* pr_path = "/user/";
+
+    bool is_page_of_certain_user(const std::string& path) {
+        if (!een9::beginsWith(path, pr_path))
+            return false;
+        std::string r = path.substr(strlen(pr_path));
+        return check_nickname(r);
+    }
+
+    std::string obtain_nickname_in_user_page_path(const std::string& path) {
+        return path.substr(strlen(pr_path));
+    }
+
+    json::JSON user_row_to_userprofile_obj(SqliteConnection& conn, const RowUser_Content& alien) {
+        return json::JSON(json::jdict{
+            {"name", json::JSON(alien.name)},
+            {"nickname", json::JSON(alien.nickname)},
+            {"bio", json::JSON(get_user_bio(conn, alien.id))}
+        });
+    }
+
    std::string when_page_user(WorkerGuestData& wgd, const json::JSON& config_presentation,
-                const een9::ClientRequest& req, const json::JSON& userinfo) {
-        return RTEE("profile", config_presentation, wgd, userinfo);
+                const een9::ClientRequest& req, const std::vector<LoginCookie>& login_cookies, const json::JSON& userinfo) {
+        if (userinfo.isNull())
+            return een9::form_http_server_response_303("/");
+        SqliteConnection& conn = *wgd.db;
+        if (!is_page_of_certain_user(req.uri_path))
+            return page_E404(wgd);
+        std::string alien_nickname = obtain_nickname_in_user_page_path(req.uri_path);
+        RowUser_Content alien;
+        try {
+            alien = lookup_user_content_by_nickname(conn, alien_nickname);
+        } catch (const std::exception& e) {
+            return page_E404(wgd);
+        }
+        // todo: in libjsonincpp: fix '999999 problem'
+        bool can_edit = false;
+        int64_t myuid = -1;
+        if (userinfo.isDictionary()) {
+            myuid = userinfo["uid"].asInteger().get_int();
+            can_edit = (alien.id == myuid && myuid >= 0);
+        }
+        if (req.method == "POST") {
+            std::vector<std::pair<std::string, std::string>> response_hlines;
+            try {
+                if (!can_edit)
+                    een9_THROW("Unauthorized access");
+                std::vector<std::pair<std::string, std::string>> query = een9::split_html_query(req.body);
+                // Profile update processing
+                std::string bio;
+                std::string name;
+                std::string password;
+                for (const std::pair<std::string, std::string>& p: query) {
+                    if (p.first == "bio")
+                        bio = p.second;
+                    else if (p.first == "name")
+                        name = p.second;
+                    else if (p.first == "password")
+                        password = p.second;
+                }
+                if (!bio.empty()) {
+                    if (!is_orthodox_string(bio) || bio.size() > 100000)
+                        een9_THROW("Incorrect `bio`");
+                    sqlite_nooutput(conn,
+                        "UPDATE `user` SET `bio` = ?1 WHERE `id` = ?2",
+                        {{2, alien.id}}, {{1, bio}});
+                }
+                if (!name.empty()) {
+                    if (!check_name(name))
+                        een9_THROW("Incorrect `name`");
+                    sqlite_nooutput(conn,
+                        "UPDATE `user` SET `name` = ?1 WHERE `id` = ?2",
+                        {{2, alien.id}}, {{1, name}});
+                }
+                if (!password.empty()) {
+                    if (!check_strong_password(password))
+                        een9_THROW("Incorrect `password`");
+                    sqlite_nooutput(conn,
+                        "UPDATE `user` SET `password` = ?1 WHERE `id` = ?2",
+                        {{2, alien.id}}, {{1, password}});
+                    if (alien.id == myuid) {
+                        LoginCookie new_login_cookie = create_login_cookie(userinfo["nickname"].asString(), password);
+                        add_set_cookie_headers_to_login(login_cookies, response_hlines, new_login_cookie);
+                    }
+                }
+            } catch (const std::exception& e) {
+                printf("Redirecting back to /user/... because of incorrect credentials\n");
+                json::JSON msg_list = jsonify_html_message_list({{"",
+                    config_presentation["edit-profile"]["incorrect-profile-data"].asString()}});
+                json::JSON alien_userprofile = user_row_to_userprofile_obj(conn, alien);
+                return http_R200("edit-profile", wgd, {&config_presentation, &userinfo, &alien_userprofile, &msg_list});
+            }
+            return een9::form_http_server_response_303_spec_head("/user/" + alien_nickname, response_hlines);
+        }
+        if (req.method == "GET") {
+            json::JSON alien_userprofile = user_row_to_userprofile_obj(conn, alien);
+            if (can_edit) {
+                json::JSON empty_msg_list = jsonify_html_message_list({});
+                return http_R200("edit-profile", wgd, {&config_presentation, &userinfo, &alien_userprofile, &empty_msg_list});
+            }
+            return http_R200("view-profile", wgd, {&config_presentation, &userinfo, &alien_userprofile});
+        }
+        een9_THROW("Bad method");
    }
 }
--- a/src/web_chat/iu9_ca_web_chat_lib/debug.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/debug.cpp
--- a/src/web_chat/iu9_ca_web_chat_lib/debug.h
+++ b/src/web_chat/iu9_ca_web_chat_lib/debug.h
@ -0,0 +1,6 @@
+#ifndef IU9_CA_WEB_CHAT_LIB_DEBUG_H
+#define IU9_CA_WEB_CHAT_LIB_DEBUG_H
+
+#define debug_print_json(x) printf("%s\n", json::generate_str(x, json::print_pretty).c_str())
+
+#endif
--- a/src/web_chat/iu9_ca_web_chat_lib/find_db.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/find_db.cpp
@ -2,15 +2,17 @@

 namespace iu9cawebchat{
    int find_db_sqlite_file_path(const json::JSON& config, std::string& res_path) {
-        const json::JSON& type = config["database"]["type"].g();
-        if (!type.isString() && type.asString() == "sqlite3")
+        try {
+            const std::string& type = config["database"]["type"].asString();
+            if (type != "sqlite3")
+                return -1;
+            const std::string& path = config["database"]["file"].asString();
+            if (path.empty() || path[0] == ':')
+                return -1;
+            res_path = path;
+        } catch (const json::misuse& e) {
            return -1;
-        const json::JSON& path = config["database"]["file"].g();
-        if (!path.isString())
-            return -1;
-        if (path.asString().empty() || path.asString()[0] == ':')
-            return -1;
-        res_path = path.asString();
+        }
        return 0;
    }
 }
--- a/src/web_chat/iu9_ca_web_chat_lib/initialize.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/initialize.cpp
@ -7,24 +7,27 @@
 #include <unistd.h>
 #include <assert.h>
 #include "sqlite3_wrapper.h"
+#include "backend_logic/server_data_interact.h"

 namespace iu9cawebchat {
    void initialize_website(const json::JSON& config, const std::string& root_pw) {
        printf("Initialization...\n");
-        een9_ASSERT(check_password(root_pw), "Bad root password");
+        if (!check_strong_password(root_pw))
+            een9_THROW("Bad root password");
        std::string db_path;
        int ret;
        ret = find_db_sqlite_file_path(config, db_path);
-        een9_ASSERT(ret == 0, "Invalid settings[\"database\"] field");
+        if (ret != 0)
+            een9_THROW("Invalid settings[\"database\"] field");
        if (een9::isRegularFile(db_path)) {
            // todo: plaese, don't do this
            ret = unlink(db_path.c_str());
-            een9_ASSERT_pl(ret == 0);
+            if (ret != 0)
+                een9_THROW("unlink");
        }
-        een9_ASSERT(!een9::isRegularFile(db_path), "Database file exists prior to initialization. "
-            "Can't preceed withut harming existing data");
+        if (een9::isRegularFile(db_path))
+            een9_THROW("Database file exists prior to initialization. Can't preceed withut harming existing data");
        SqliteConnection conn(db_path.c_str());
-        assert(sqlite3_errcode(conn.hand) == SQLITE_OK);
        /* Role of memeber of chat:
         * 1 - admin
         * 2 - regular
@ -44,36 +47,38 @@ namespace iu9cawebchat {
                                             "`nickname` TEXT UNIQUE REFERENCES `nickname` NOT NULL,"
                                             "`name` TEXT NOT NULL,"
                                             "`chatList_HistoryId` INTEGER NOT NULL,"
-                                             "`password` TEXT NOT NULL"
+                                             "`password` TEXT NOT NULL,"
+                                             "`bio` TEXT NOT NULL"
                                             ")");
            sqlite_nooutput(conn, "CREATE TABLE `chat` ("
                                             "`id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,"
                                             "`nickname` TEXT UNIQUE REFERENCES `nickname` NOT NULL,"
                                             "`name` TEXT NOT NULL,"
                                             "`it_HistoryId` INTEGER NOT NULL,"
-                                             "`lastMsgId` INTEGER REFERENCES `message`"
+                                             "`lastMsgId` INTEGER NOT NULL"
                                             ")");
            sqlite_nooutput(conn, "CREATE TABLE `user_chat_membership` ("
                                             "`userId` INTEGER REFERENCES `user` NOT NULL,"
                                             "`chatId` INTEGER REFERENCES `chat` NOT NULL,"
                                             "`user_chatList_IncHistoryId` INTEGER NOT NULL,"
                                             "`chat_IncHistoryId` INTEGER NOT NULL,"
-                                             "`role` INTEGER NOT NULL"
+                                             "`role` INTEGER NOT NULL,"
+                                             "UNIQUE (`userId`, `chatId`)"
                                             ")");
            sqlite_nooutput(conn, "CREATE TABLE `message` ("
-                                             "`id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,"
                                             "`chatId` INTEGER REFERENCES `chat` NOT NULL,"
-                                             "`previous` INTEGER REFERENCES `message`,"
-                                             "`senderUserId` INTEGER REFERENCES `user` NOT NULL,"
+                                             "`id` INTEGER NOT NULL,"
+                                             "`senderUserId` INTEGER REFERENCES `user`,"
                                             "`exists` BOOLEAN NOT NULL,"
                                             "`isSystem` BOOLEAN NOT NULL,"
-                                             "`text` TEXT NOT NULL,"
-                                             "`chat_IncHistoryId` INTEGER NOT NULL"
+                                             "`text` TEXT,"
+                                             "`chat_IncHistoryId` INTEGER NOT NULL,"
+                                             "PRIMARY KEY (`chatId`, `id`)"
                                             ")");
-            sqlite_nooutput(conn, "INSERT INTO `nickname` VALUES (?1)", {}, {{1, "root"}});
-            sqlite_nooutput(conn, "INSERT INTO `user` (`id`, `nickname`, `name`, `chatList_HistoryId`, `password`) VALUES "
-                                             "(0, ?1, ?2, 0, ?3)", {},
-                                             {{1, "root"}, {2, "Rootov Root Rootovich"}, {3, root_pw}});
+            std::vector<std::string> sus = {"unknown", "undefined", "null", "none", "None", "NaN"};
+            for (auto& s: sus)
+                reserve_nickname(conn, s);
+            add_user(conn, "root", "Rootov Root Rootovich", root_pw, "One admin to rule them all", 0);
            sqlite_nooutput(conn, "END");
        } catch (const std::exception& e) {
            sqlite_nooutput(conn, "ROLLBACK", {}, {});
--- a/src/web_chat/iu9_ca_web_chat_lib/localizator.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/localizator.cpp
@ -0,0 +1,154 @@
+#include "localizator.h"
+
+#include <jsonincpp/string_representation.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <engine_engine_number_9/os_utils.h>
+#include <engine_engine_number_9/baza_throw.h>
+#include <assert.h>
+
+namespace iu9cawebchat {
+    std::string languageRangeSimpler(const std::string& a) {
+        return a == "*" ? "" : a;
+    }
+
+    // I won't use iterators. c plus plus IS a scripting language and I do not want to mess with iterators
+    std::vector<std::string> languageRangeGetPrefixes(const std::string& lr) {
+        if (lr.empty())
+            return {""};
+        std::vector<std::string> result = {"", ""};
+        for (size_t i = 0; i < lr.size(); i++) {
+            if (lr[i] == '-')
+                result.push_back(result.back());
+            result.back() += lr[i];
+
+        }
+        return result;
+    }
+
+    bool isInWhitelist(const std::string& lr, const std::vector<std::string>& whitelist) {
+        for (const std::string& prefix : languageRangeGetPrefixes(lr))
+            for (const std::string& nicePrefix: whitelist)
+                if (prefix == nicePrefix)
+                    return true;
+        return false;
+    }
+
+    std::vector<LanguageFile> collect_lang_dir_content(const std::string& lang_dir,
+        const std::vector<std::string>& whitelist) {
+
+        std::vector<LanguageFile> result;
+        errno = 0;
+        DIR* D = opendir(lang_dir.c_str());
+        struct Guard1{ DIR*& D; ~Guard1(){ closedir(D); } } g1{D};
+        if (!D)
+            een9_THROW_on_errno("opendir (" + lang_dir + ")");
+        while (true) {
+            errno = 0;
+            struct dirent* Dent = readdir(D);
+            if (Dent == NULL) {
+                if (errno == 0)
+                    break;
+                een9_THROW_on_errno("dirent");
+            }
+            std::string entry = Dent->d_name;
+            if (entry == "." || entry == "..")
+                continue;
+            std::string filename = lang_dir + "/" + entry;
+            struct stat info;
+            int ret = stat(filename.c_str(), &info);
+            een9_ASSERT_on_iret(ret, "stat(" + filename + ")");
+            if (!S_ISREG(info.st_mode))
+                continue;
+            const std::string postfix = ".lang.json";
+            if (!een9::endsWith(entry, postfix))
+                continue;
+            std::string lang_antirange = entry.substr(0, entry.size() - postfix.size());
+            if (!isInWhitelist(lang_antirange, whitelist))
+                continue;
+            std::string content;
+            een9::readFile(filename, content);
+
+            result.emplace_back();
+            result.back().languagerange = languageRangeSimpler(lang_antirange);
+            result.back().content = json::parse_str_flawless(content);
+        }
+        return result;
+    }
+
+
+    Localizator::Localizator(const LocalizatorSettings &settings) : settings(settings) {
+        /* First - length of the longest prefix that was found so far (in force_order)
+         * Second - index in force_order that was assigned to this thingy
+         */
+
+        files = collect_lang_dir_content(settings.lang_dir, settings.whitelist);
+        size_t n = files.size();
+#define redundantFileMsg "Redundant localization file"
+        for (size_t i = 0; i < n; i++) {
+            for (size_t j = i + 1; j < n; j++) {
+                std::string A = files[i].languagerange;
+                std::string B = files[j].languagerange;
+                for (std::string& pa: languageRangeGetPrefixes(A))
+                    if (pa == B)
+                        een9_THROW(redundantFileMsg);
+                for (std::string& pb: languageRangeGetPrefixes(B))
+                    if (pb == A)
+                        een9_THROW(redundantFileMsg);
+            }
+        }
+        std::map<std::string, std::vector<std::size_t>> pref_to_files;
+        for (size_t k = 0; k < n; k++) {
+            for (const std::string& prefix: languageRangeGetPrefixes(files[k].languagerange)) {
+                pref_to_files[prefix].push_back(k);
+            }
+        }
+        std::vector<std::pair<size_t, size_t>> assignment;
+        constexpr size_t inf_bad_order = 999999999;
+        assignment.assign(n, {0, inf_bad_order});
+        if (settings.force_order.size() >= inf_bad_order - 2)
+            een9_THROW("o_O");
+        for (ssize_t i = 0; i < settings.force_order.size(); i++) {
+            const std::string& ip = settings.force_order[i];
+            if (pref_to_files.count(ip) != 1)
+                een9_THROW("force-order list contains entries that match no files (" + ip + ")");
+            for (size_t k: pref_to_files.at(ip)) {
+                if (assignment[k].first <= ip.size()) {
+                    assignment[k].first = ip.size();
+                    assignment[k].second = i;
+                }
+            }
+        }
+        for (auto& p: pref_to_files) {
+            const std::vector<size_t>& candidates = p.second;
+            assert(!candidates.empty());
+            size_t bestSoFar = candidates[0];
+            size_t f = inf_bad_order;
+            for (size_t k: candidates) {
+                if (assignment[k].second <= f) {
+                    f = assignment[k].second;
+                    bestSoFar = k;
+                }
+            }
+            prefix_to_file[p.first] = bestSoFar;
+        }
+        if (prefix_to_file.count("") != 1)
+            een9_THROW("No locales were provided");
+        // todo: remove DEBUG
+        // for (size_t k = 0; k < n; k++) {
+            // printf("%s has priority %lu\n", files[k].languagerange.c_str(), assignment[k].second);
+        // }
+        // printf("==============\n");
+        // for (const auto& p : prefix_to_file) {
+            // printf("%s  ->  %s\n", p.first.c_str(), files[p.second].languagerange.c_str());
+        // }
+    }
+
+    const LanguageFile& Localizator::get_right_locale(const std::vector<std::string> &preferred_langs) {
+        for (const std::string& lr: preferred_langs) {
+            if (prefix_to_file.count(lr) == 1)
+                return files[prefix_to_file.at(lr)];
+        }
+        return files[prefix_to_file.at("")];
+    }
+}
--- a/src/web_chat/iu9_ca_web_chat_lib/localizator.h
+++ b/src/web_chat/iu9_ca_web_chat_lib/localizator.h
@ -0,0 +1,36 @@
+#ifndef IU9_CA_WEB_CHAT_LIB_LOCALIZATOR_H
+#define IU9_CA_WEB_CHAT_LIB_LOCALIZATOR_H
+
+#include <jsonincpp/jsonobj.h>
+
+namespace iu9cawebchat {
+    /* '*' -> ''; X -> X */
+    std::string languageRangeSimpler(const std::string& a);
+
+    struct LocalizatorSettings {
+        std::string lang_dir;
+        std::vector<std::string> whitelist;
+        std::vector<std::string> force_order;
+    };
+
+    /* There is no need to put http Content-Language response value into json file. When is is in the name */
+    struct LanguageFile {
+        std::string languagerange;
+        json::JSON content;
+    };
+
+    /* Localizator uses libjsonincpp internally, and thus can't be read by two treads simultaneously */
+    struct Localizator {
+        LocalizatorSettings settings;
+        std::vector<LanguageFile> files;
+        std::map<std::string, size_t> prefix_to_file;
+
+        /* Throws std::exception if something goes wrong */
+        explicit Localizator(const LocalizatorSettings& settings);
+
+        /* Returns a reference to object inside Localizator */
+        const LanguageFile& get_right_locale(const std::vector<std::string>& preferred_langs);
+    };
+}
+
+#endif
--- a/src/web_chat/iu9_ca_web_chat_lib/login_cookie.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/login_cookie.cpp
@ -23,8 +23,8 @@ namespace iu9cawebchat {
        uint64_t nsec = std::stoull(ft.substr(s_ + 1, ft.size() - s_ - 1));
        een9_ASSERT_pl(nsec < 1000000000);
        const json::JSON cnt = json::parse_str_flawless(base64_decode(login_cookie_encoded.second));
-        std::string nickname = cnt[0].g().asString();
-        std::string password = cnt[1].g().asString();
+        std::string nickname = cnt[0].asString();
+        std::string password = cnt[1].asString();
        return LoginCookie{{(time_t)sec, (time_t)nsec}, nickname, password};
    }

@ -37,8 +37,8 @@ namespace iu9cawebchat {

    std::pair<std::string, std::string> encode_login_cookie(const LoginCookie& cookie) {
            json::JSON cnt;
-            cnt[1].g() = cookie.password;
-            cnt[0].g() = cookie.nickname;
+            cnt[1].asString() = cookie.password;
+            cnt[0].asString() = cookie.nickname;
        return {"login_" + std::to_string(cookie.login_time.tv_sec) + "_" + std::to_string(cookie.login_time.tv_nsec),
            base64_encode(json::generate_str(cnt, json::print_compact))};
    }
--- a/src/web_chat/iu9_ca_web_chat_lib/run.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/run.cpp
@ -5,6 +5,7 @@
 #include <engine_engine_number_9/connecting_assets/static_asset_manager.h>
 #include "find_db.h"
 #include <engine_engine_number_9/running_mainloop.h>
+#include <engine_engine_number_9/http_structures/accept_language.h>
 #include <signal.h>
 #include "str_fields.h"
 #include "backend_logic/client_server_interact.h"
@ -16,22 +17,50 @@ namespace iu9cawebchat {
        termination = true;
    }

+    struct ONE_SQLITE_TRANSACTION_GUARD {
+        SqliteConnection& conn;
+        bool rollback = false;
+
+        explicit ONE_SQLITE_TRANSACTION_GUARD(SqliteConnection& conn_) : conn(conn_) {
+            sqlite_nooutput(conn, "BEGIN", {}, {});
+        }
+
+        ~ONE_SQLITE_TRANSACTION_GUARD() {
+            if (rollback)
+                sqlite_nooutput(conn, "ROLLBACK", {}, {});
+            else
+                sqlite_nooutput(conn, "END", {}, {});
+        }
+    };
+
+    LocalizatorSettings make_localizator_settings(const std::string& assets_dir, const json::JSON& config) {
+        std::vector<std::string> whitelist;
+        for (const json::JSON& entry: config["lang"]["whitelist"].asArray())
+            whitelist.push_back(languageRangeSimpler(entry.asString()));
+        std::vector<std::string> force_order;
+        for (const json::JSON& entry: config["lang"]["force-order"].asArray())
+            force_order.push_back(languageRangeSimpler(entry.asString()));
+        return LocalizatorSettings{assets_dir + "/lang", whitelist, force_order};
+    }
+
    void run_website(const json::JSON& config) {
-        een9_ASSERT(config["assets"].g().isString(), "config[\"assets\"] is not string");
-        std::string assets_dir = config["assets"].g().asString();
+        een9_ASSERT(config["assets"].isString(), "config[\"assets\"] is not string");
+        const std::string& assets_dir = config["assets"].asString();
        een9_ASSERT(een9::isDirectory(assets_dir), "\"" + assets_dir + "\" is not a directory");

+        LocalizatorSettings localizator_settings = make_localizator_settings(assets_dir, config);
+
        een9::StaticAssetManagerSlaveModule samI;
        samI.update({
            een9::StaticAssetManagerRule{assets_dir + "/css", "/assets/css", {{".css", "text/css"}} },
            een9::StaticAssetManagerRule{assets_dir + "/js", "/assets/js", {{".js", "text/javascript"}} },
+            een9::StaticAssetManagerRule{assets_dir + "/gif", "/assets/gif", {{".gif", "image/gif"}} },
            een9::StaticAssetManagerRule{assets_dir + "/img", "/assets/img", {
                {".jpg", "image/jpg"}, {".png", "image/png"}, {".svg", "image/svg+xml"}
            } },
        });

-        const json::JSON& config_presentation = config["presentation"].g();
-        int64_t slave_number = config["server"]["workers"].g().asInteger().get_int();
+        int64_t slave_number = config["server"]["workers"].asInteger().get_int();
        een9_ASSERT(slave_number > 0 && slave_number <= 200, "E");

        std::string sqlite_db_path;
@ -44,21 +73,24 @@ namespace iu9cawebchat {
                nytl::TemplaterSettings{nytl::TemplaterDetourRules{assets_dir + "/HypertextPages"}});
            worker_guest_data[i].templater->update();
            worker_guest_data[i].db = std::make_unique<SqliteConnection>(sqlite_db_path);
+            worker_guest_data[i].locales = std::make_unique<Localizator>(localizator_settings);
        }

        een9::MainloopParameters params;
-        params.guest_core = [&samI, &worker_guest_data, config_presentation]
+        params.guest_core = [&samI, &worker_guest_data]
        (const een9::SlaveTask& task, const een9::ClientRequest& req, een9::worker_id_t worker_id) -> std::string {
            een9_ASSERT_pl(0 <= worker_id && worker_id < worker_guest_data.size());
            WorkerGuestData& wgd = worker_guest_data[worker_id];
            een9::StaticAsset sa;
-            sqlite_nooutput(*wgd.db, "BEGIN", {}, {});
-            struct guard {SqliteConnection& conn; bool rollback = false; ~guard() {
-                if (rollback)
-                    sqlite_nooutput(conn, "ROLLBACK", {}, {});
-                else
-                    sqlite_nooutput(conn, "END", {}, {});
-                }} guard_{*wgd.db};
+            ONE_SQLITE_TRANSACTION_GUARD conn_guard(*wgd.db);
+            std::string AcceptLanguage;
+            for (const std::pair<std::string, std::string>& p: req.headers) {
+                if (p.first == "Accept-Language")
+                    AcceptLanguage = p.second;
+            }
+            std::vector<std::string> AcceptLanguageB = een9::parse_header_Accept_Language(AcceptLanguage);
+            const LanguageFile& locale = wgd.locales->get_right_locale(AcceptLanguageB);
+            const json::JSON& pres = locale.content;
            try {
                std::vector<std::pair<std::string, std::string>> cookies;
                std::vector<LoginCookie> login_cookies;
@ -67,38 +99,50 @@ namespace iu9cawebchat {
                initial_extraction_of_all_the_useful_info_from_cookies(*wgd.db, req, cookies, login_cookies, userinfo, logged_in_user);

                if (req.uri_path == "/" || req.uri_path == "/list-rooms") {
-                    return when_page_list_rooms(wgd, config_presentation, req, userinfo);
+                    return when_page_list_rooms(wgd, pres, req, userinfo);
                }
                if (req.uri_path == "/login") {
-                    return when_page_login(wgd, config_presentation, req, login_cookies, userinfo);
+                    return when_page_login(wgd, pres, req, login_cookies, userinfo);
                }
-                if (een9::beginsWith(req.uri_path, "/chat")) {
-                    return when_page_chat(wgd, config_presentation, req, userinfo);
+                // todo: split
+                if (een9::beginsWith(req.uri_path, "/chat/") || een9::beginsWith(req.uri_path, "/chat-members/")) {
+                    return when_page_chat(wgd, pres, req, userinfo);
                }
-                if (req.uri_path == "/user") {
-                    return when_page_user(wgd, config_presentation, req, userinfo);
+                if (een9::beginsWith(req.uri_path, "/user/")) {
+                    return when_page_user(wgd, pres, req, login_cookies, userinfo);
                }
-                if (req.uri_path == "/internalapi/pollEvents") {
-                    return when_internalapi_pollevents(wgd, req, logged_in_user);
+                if (req.uri_path == "/register") {
+                    return when_page_register(wgd, pres, req, userinfo);
                }
-                if (req.uri_path == "/internalapi/getChatList") {
-                    return  when_internalapi_getchatlist(wgd, req, logged_in_user);
+                if (req.uri_path == "/api/chatPollEvents") {
+                    return when_internalapi_chatpollevents(wgd, req, logged_in_user);
                }
-                if (req.uri_path == "/internalapi/getChatInfo") {
-                    return when_internalapi_getchatinfo(wgd, req, logged_in_user);
+                if (req.uri_path == "/api/chatListPollEvents") {
+                    return  when_internalapi_chatlistpollevents(wgd, req, logged_in_user);
                }
-                if (req.uri_path == "/internalapi/getChatMemberList") {
-                    return when_internalapi_getchatmemberlist(wgd, req, logged_in_user);
+                if (req.uri_path == "/api/getMessageNeighbours") {
+                    return when_internalapi_getmessageneighbours(wgd, req, logged_in_user);
                }
-                if (req.uri_path == "/internalapi/getUserInfo") {
-                    return when_internalapi_getuserinfo(wgd, req, logged_in_user);
+                if (req.uri_path == "/api/sendMessage") {
+                    return when_internalapi_sendmessage(wgd, req, logged_in_user);
                }
-                if (req.uri_path == "/internalapi/getMessageInfo") {
-                    return when_internalapi_getmessageinfo(wgd, req, logged_in_user);
+                if (req.uri_path == "/api/deleteMessage") {
+                    return when_internalapi_deletemessage(wgd, req, logged_in_user);
+                }
+                if (req.uri_path == "/api/addMemberToChat") {
+                    return when_internalapi_addmembertochat(wgd, req, logged_in_user);
+                }
+                if (req.uri_path == "/api/removeMemberFromChat") {
+                    return when_internalapi_removememberfromchat(wgd, req, logged_in_user);
+                }
+                if (req.uri_path == "/api/createChat") {
+                    return when_internalapi_createchat(wgd, req, logged_in_user);
+                }
+                if (req.uri_path == "/api/leaveChat") {
+                    return when_internalapi_leavechat(wgd, req, logged_in_user);
                }
-                // todo: write all the other interfaces
            } catch (const std::exception& e) {
-                guard_.rollback = true;
+                conn_guard.rollback = true;
                throw;
            }
            /* Trying to interpret request as asset lookup */
@ -113,29 +157,11 @@ namespace iu9cawebchat {
        (const een9::SlaveTask& task, const std::string& req, een9::worker_id_t worker_id) -> std::string {
            een9_ASSERT_pl(0 <= worker_id && worker_id < worker_guest_data.size());
            WorkerGuestData& wgd = worker_guest_data[worker_id];
+            ONE_SQLITE_TRANSACTION_GUARD conn_guad(*wgd.db);
            try {
-                if (req == "hello") {
-                    return ":0 omg! hiii!! Hewwou :3 !!!!\n";
-                }
-                if (req == "8") {
-                    termination = true;
-                    return "Bye\n";
-                }
-                std::string updaterootpw_pref = "updaterootpw";
-                if (een9::beginsWith(req, "updaterootpw")) {
-                    size_t nid = updaterootpw_pref.size();
-                    if (nid >= req.size() || !isSPACE(req[nid]))
-                        return "Bad command syntax. Missing whitespace\n";
-                    std::string new_password = req.substr(nid + 1);
-                    if (!check_password(new_password))
-                        een9_THROW("Bad password");
-                    sqlite_nooutput(*wgd.db,
-                        "UPDATE `user` SET `password` = ?1 WHERE `id` = 0 ",
-                        {}, {{1, new_password}});
-                    return "Successul update\n";
-                }
-                return "Incorrect command\n";
+                return admin_control_procedure(*wgd.db, req, termination);
            } catch (std::exception& e) {
+                conn_guad.rollback = true;
                return std::string("Server error\n") + e.what();
            }
        };
@ -151,8 +177,8 @@ namespace iu9cawebchat {
                een9_ASSERT(ret == 0, "Incorrect ear address: " + source[i].asString());
            }
        };
-        translate_addr_list_conf(params.client_regular_listened, config["server"]["http-listen"].g().asArray());
-        translate_addr_list_conf(params.admin_control_listened, config["server"]["admin-command-listen"].g().asArray());
+        translate_addr_list_conf(params.client_regular_listened, config["server"]["http-listen"].asArray());
+        translate_addr_list_conf(params.admin_control_listened, config["server"]["admin-command-listen"].asArray());

        signal(SIGINT, sigterm_action);
        signal(SIGTERM, sigterm_action);
--- a/src/web_chat/iu9_ca_web_chat_lib/sqlite3_wrapper.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/sqlite3_wrapper.cpp
@ -76,7 +76,7 @@ namespace iu9cawebchat {

        int ret = sqlite3_prepare_v2(connection.hand, req_statement.c_str(), -1, &stmt_obj, NULL);
        if (ret != 0) {
-            int err_pos = sqlite3_error_offset(connection.hand);
+            int err_pos = -1;
            een9_THROW("Compilation of request\n" + req_statement + "\nfailed" +
                ((err_pos >= 0) ? " with offset " + std::to_string(err_pos) : ""));
        }
@ -101,9 +101,14 @@ namespace iu9cawebchat {
        sqlite3_finalize(stmt_obj);
    }

+    void sqlite_stmt_bind_int64(SqliteStatement &stmt, int paramId, int64_t value) {
+        int ret = sqlite3_bind_int64(stmt.stmt_obj, paramId, value);
+        een9_ASSERT(ret == 0, "sqlite3_bind_int64");
+    }
+
    int sqlite_stmt_step(SqliteStatement &stmt,
-        const std::vector<std::pair<int, fsql_integer_or_null *>> &ret_of_integer_or_null,
-        const std::vector<std::pair<int, fsql_text8_or_null *>> &ret_of_text8_or_null) {
+                         const std::vector<std::pair<int, fsql_integer_or_null *>> &ret_of_integer_or_null,
+                         const std::vector<std::pair<int, fsql_text8_or_null *>> &ret_of_text8_or_null) {
        int ret = sqlite3_step(stmt.stmt_obj);
        if (ret == SQLITE_DONE)
            return ret;
@ -137,4 +142,9 @@ namespace iu9cawebchat {
        }
        return SQLITE_ROW;
    }
+
+    int64_t sqlite_trsess_last_insert_rowid(SqliteConnection& conn) {
+        int64_t res = sqlite3_last_insert_rowid(conn.hand);
+        return res;
+    }
 }
--- a/src/web_chat/iu9_ca_web_chat_lib/sqlite3_wrapper.h
+++ b/src/web_chat/iu9_ca_web_chat_lib/sqlite3_wrapper.h
@ -41,9 +41,13 @@ namespace iu9cawebchat {
        ~SqliteStatement();
    };

+    void sqlite_stmt_bind_int64(SqliteStatement& stmt, int paramId, int64_t value);
+
    int sqlite_stmt_step(SqliteStatement& stmt,
        const std::vector<std::pair<int, fsql_integer_or_null*>>& ret_of_integer_or_null,
        const std::vector<std::pair<int, fsql_text8_or_null*>>& ret_of_text8_or_null);
+
+    int64_t sqlite_trsess_last_insert_rowid(SqliteConnection& conn);
 }

 #endif
--- a/src/web_chat/iu9_ca_web_chat_lib/str_fields.cpp
+++ b/src/web_chat/iu9_ca_web_chat_lib/str_fields.cpp
@ -28,11 +28,15 @@ namespace iu9cawebchat {
    }

    bool check_password(const std::string &pwd) {
-        return is_orthodox_string(pwd) && pwd.size() >= 8;
+        return is_orthodox_string(pwd) && pwd.size() <= 150;
+    }
+
+    bool check_strong_password(const std::string& pwd) {
+        return check_password(pwd) && pwd.size() >= 8;
    }

    bool check_name(const std::string &name) {
-        return is_orthodox_string(name);
+        return is_orthodox_string(name) && name.size() <= 150 && !name.empty();
    }

    bool check_nickname(const std::string &nickname) {
@ -42,7 +46,7 @@ namespace iu9cawebchat {
            if (!isUNCHAR(ch))
                return false;
        }
-        return true;
+        return nickname.size() <= 150;
    }

    /* Yeah baby, it's base64 time!!! */
--- a/src/web_chat/iu9_ca_web_chat_lib/str_fields.h
+++ b/src/web_chat/iu9_ca_web_chat_lib/str_fields.h
@ -13,6 +13,7 @@ namespace iu9cawebchat {
    bool is_orthodox_string(const std::string& str);

    bool check_password(const std::string& pwd);
+    bool check_strong_password(const std::string& pwd);
    bool check_name(const std::string& name);
    bool check_nickname(const std::string& nickname);

--- a/src/web_chat/iu9_ca_web_chat_service/service.cpp
+++ b/src/web_chat/iu9_ca_web_chat_service/service.cpp
@ -34,6 +34,8 @@ int main(int argc, char** argv){
            iu9cawebchat::initialize_website(config, root_pw);
        } else if (cmd == "run") {
            iu9cawebchat::run_website(config);
+        } else if (cmd == "version") {
+            printf("IU9 Collarbone Annihilation Web Chat (service) V 1.0\n");
        } else
            een9_THROW("unknown action (known are 'run', 'initialize')");
    } catch (std::exception& e) {
Author	SHA1	Message	Date
yakovlevanton	f6c649f9db	Удалил лишние файлы chatSettings	2024-09-14 03:45:45 +03:00
yakovlevanton	9f0331ed62	Merge remote-tracking branch 'origin/anton_branch_2.0'	2024-09-14 03:43:33 +03:00
Fedor_Kitanin	16a6ee963a	inaccuracies have been eliminated	2024-09-12 18:24:03 +03:00
Fedor_Kitanin	febf3af534	убраны два файла для мерджа	2024-09-12 17:00:45 +03:00
Fedor_Kitanin	61ef791c89	rooms are centralized	2024-09-12 16:52:18 +03:00
Fedor_Kitanin	14a8c1755e	что-то	2024-09-12 15:46:17 +03:00
Fedor_Kitanin	1eb3f08b2c	changed the rooms page	2024-09-12 14:43:53 +03:00
Fedor_Kitanin	5d4d1149d4	many folders have been updated, and html, js, and css extension files have also been changed	2024-09-12 10:47:29 +03:00
Китанин Фёдор	d1bfe44d0d	Merge pull request 'Added registration' (#5 ) from fed into master Reviewed-on: #5	2024-09-11 08:52:35 +00:00
Fedor Kitanin	bc2c7d31c9	Added registration	2024-09-11 11:46:35 +03:00
Andreev Gregory	249f5e6b78	Fixed annoying bugs, added reassignment of anchor. FIRST RELEASE VERSION	2024-09-07 21:55:26 +03:00
Andreev Gregory	6813c6249d	Added cumping to chat widget	2024-09-07 10:48:15 +03:00
Andreev Gregory	270549c21a	Translated everything to ru-RU	2024-09-07 00:49:48 +03:00
Andreev Gregory	0ed8150c4e	Translated to english	2024-09-07 00:31:42 +03:00
Andreev Gregory	b0d7a35eb2	First efforts to internationalize site	2024-09-06 01:06:36 +03:00
Andreev Gregory	68094f904d	minor fixes, added system messages	2024-09-05 11:30:40 +03:00
Andreev Gregory	2219653f40	FIRST WORKING VERSION OF IU9 CA WEB CHAT. IT'S WORKINGgit add -A! YOU CAN SEND STUFF INTO CHAT AND IT WILL LOAD UP ON ANOTHER DEVICE EEEEEEEE	2024-09-05 00:17:33 +03:00
Andreev Gregory	b9626aa860	Making /chat. Unstable save. Working message loading. Styles of messages are not perfect. Several iu9cachat bugs fixed	2024-09-04 12:39:39 +03:00
Andreev Gregory	fc721d7f5c	Fixed a lot of server-side bugs, /list-rooms page bugs. Added favicon, finished /chat-members page	2024-09-02 12:34:49 +03:00
Andreev Gregory	3a8bdb99ec	Fixed some problems with deletion buttons in /list-rooms, wrote a sketch for /chat-members	2024-09-02 01:11:28 +03:00
Andreev Gregory	9283590122	fixed some backend bugs. Finished /list-rooms. Now we have these cool popup windows before serious actions	2024-09-01 22:24:55 +03:00
Andreev Gregory	21a23be96e	Doing frontend now. Added these cool popup windows in list-rooms.nytl.html	2024-09-01 13:03:52 +03:00
Andreev Gregory	07711a93b0	Fixed some bugs in nytl, een9 ad chat, wrote a skeleton for list-rooms, chat pages, finished login, view-profile, edit-profile-pages. chat-members page still needs attention	2024-09-01 01:29:32 +03:00
Fedor_Kitanin	91d88dc06c	добавлены новые файлы	2024-08-31 21:26:12 +03:00
Andreev Gregory	c009b848b5	Merge branch 'master' into chat-wg-test To pull all the images	2024-08-31 18:59:10 +03:00
Andreev Gregory	cc8aa516bb	New logo	2024-08-31 18:58:21 +03:00
yakovlevanton	29e06059d5	Добавлена реализация http-запросов на странице chatSettings.nytl.html	2024-08-31 17:53:38 +03:00
Andreev Gregory	711e495f15	Added some cool svg icons	2024-08-30 20:45:03 +03:00
Andreev Gregory	5062e1ab70	asdasdasdasdasdasdas	2024-08-30 16:27:33 +03:00
Andreev Gregory	632d4069ac	Fixed some bugs, added user registration, tweaked syntax of admin control commands	2024-08-30 00:21:14 +03:00
Andreev Gregory	7de352ce1c	Fixed buildscript	2024-08-29 20:58:50 +03:00
Andreev Gregory	925229bbda	Api updated. done everything except for system message sending, user registration and any testing	2024-08-29 20:46:29 +03:00
yakovlevanton	d7aaeccfa2	Добавлена страница настроек чата	2024-08-29 18:43:36 +03:00
Fedor_Kitanin	d328acfb93	сделан кривой преход на страницу после нажатия кнопки	2024-08-29 13:43:04 +03:00
Fedor_Kitanin	a04a791ff2	изменен login.css	2024-08-29 00:54:56 +03:00
Andreev Gregory	807f0d0eab	error messages after incorrect login. sendmessage. small refactoring	2024-08-26 18:04:03 +03:00
Andreev Gregory	5a07cadd4a	Skeleton for internalapi response completed	2024-08-26 10:38:38 +03:00
Andreev Gregory	45a1662eae	api/geetMessageNeighbours	2024-08-26 00:13:56 +03:00
Fedor_Kitanin	5ba48ff58f	добавлены новые файлы	2024-08-25 17:58:18 +03:00