iu9-ca-web-chat/assets/js/chat.js

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 = '';

    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);
    });
}

function deleteMember(index) {
    members.splice(index, 1);
    renderMembersList();
}

async function sendMessage() {
    const chatMessages = document.getElementById('chat-messages');
    const chatInput = document.getElementById('chat-input');
    const message = chatInput.value;

    if (message.trim() !== '') {
        const request = {
            'chatId': currentChatID,
            'LocalHistoryId': currentHistoryId,
            'content': {
                'text': message
            }
        };

        const response = await fetch("/internalapi/sendMessage", {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify(request)
        });

        const res = await response.json();

        if (res.update) {
            const update = res.update[0];
            currentHistoryId = update.HistoryId;

            const messageElement = document.createElement('div');
            messageElement.classList.add('chat-message');

            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
        }
    };
    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;
    }
}
document.addEventListener("DOMContentLoaded", async function() {
    currentChatID = await getChatID();
});