449 lines
16 KiB
HTML
449 lines
16 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Chatroom</title>
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<!-- Include highlight.js library for syntax highlighting -->
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<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.6.0/highlight.min.js"></script>
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<!-- Include a highlight.js theme (replace 'default' with your preferred theme) -->
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<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.6.0/styles/default.min.css">
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<!-- Include socket.io for real-time bidirectional event-based communication -->
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<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/4.0.1/socket.io.min.js"></script>
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<!-- Include marked.js for markdown parsing -->
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<script src="https://cdnjs.cloudflare.com/ajax/libs/marked/9.1.2/marked.min.js" integrity="sha512-rfX4p3RNnxdwLT3wWP1K0NR3ztTobn+sISlT9WhxDDK00zNYbQ6MCHA5OHm0hqKAzEMXYCgFrp8iY/ER5MkXqA==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
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<!-- Include DOMPurify to sanitize HTML and prevent XSS attacks -->
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<script src="https://cdn.jsdelivr.net/npm/dompurify@2/dist/purify.min.js"></script>
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<!-- Link to the favicon -->
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<link rel="icon" href="{{ url_for('static', filename='favicon.ico') }}">
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<style>
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/* Basic styling for the chat application */
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html, body {
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height: 100%;
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margin: 0;
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padding: 0;
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font-family: Arial, sans-serif;
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background-color: #f7f7f7;
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display: grid;
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place-items: center;
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}
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/* Styling for the chat container */
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#chat-container {
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display: grid;
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grid-template-rows: 1fr auto;
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width: 100%;
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height: 90vh;
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background-color: #ffffff;
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border-radius: 5px;
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padding: 15px;
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box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
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box-sizing: border-box;
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}
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/* Styling for the chat area */
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#chat {
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overflow-y: auto;
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border: 1px solid #e1e1e1;
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border-radius: 5px;
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padding: 10px;
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margin-bottom: 10px;
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min-width: 400px;
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}
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/* Styling for the message input area */
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#message {
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width: 100%;
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border: 1px solid #e1e1e1;
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border-radius: 5px;
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padding: 5px;
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}
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/* Styling for individual message wrappers */
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.message-wrapper {
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display: flex;
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align-items: start;
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}
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/* Styling for the delete button next to messages */
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.message-wrapper button {
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margin-top: 16px;
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margin-right: 8px;
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}
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/* Styling for paragraphs, used for messages */
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p {
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margin-top: 8px;
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margin-bottom: 8px;
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}
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/* Styling for the main container that holds the rooms list and chat */
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.main-container {
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display: grid;
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grid-template-columns: 20% 80%; /* Adjust the 20% as needed */
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width: 100%;
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height: 90vh;
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}
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/* Styling for the rooms list */
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#rooms-list {
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border-right: 1px solid #e1e1e1;
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overflow-y: auto;
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}
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/* Styling for the unordered list in the rooms list */
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#rooms-list ul {
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list-style: none; /* Removes default list styling */
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padding: 0; /* Resets default padding */
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margin: 0; /* Resets default margin */
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}
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/* Styling for list items in the rooms list */
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#rooms-list li {
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margin-bottom: 10px; /* Adds space between items */
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padding: 5px; /* Adds padding inside each item */
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border: 1px solid #e1e1e1; /* Adds a border around each item */
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border-radius: 5px; /* Optional: Rounds the corners of the border */
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}
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/* Styling for links in the rooms list */
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#rooms-list a {
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text-decoration: none; /* Optional: Removes underline from links */
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color: inherit; /* Optional: Ensures link color matches the text color */
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}
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.hljs {
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position: relative;
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padding-left: 46px !important;
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counter-reset: line;
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}
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.hljs .line-numbers-rows {
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position: absolute;
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top: 0;
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left: 0;
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width: 3em; /* Adjust the width as needed */
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letter-spacing: -1px;
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border-right: 1px solid #ccc; /* Optional: adds a line to separate numbers */
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text-align: right;
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margin-top: 10px; /* Align with the code block */
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color: #999;
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pointer-events: none;
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}
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.hljs .line-numbers-rows span {
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display: block;
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counter-increment: line;
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}
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.hljs .line-numbers-rows span::before {
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content: counter(line);
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display: block;
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padding-right: 0.8em; /* Adjust the padding as needed */
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}
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</style>
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</head>
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<body>
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<div class="main-container">
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<div id="rooms-list">
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<ul>
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<!-- Loop through rooms and create list items for each room -->
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{% for room in rooms %}
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<a href="{{ url_for('chat', room_name=room.name) }}?username={{ username }}">
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<li data-room-id="{{ room.id }}">
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<!-- Display the room title if available, otherwise the room name -->
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<b>{{ room.name }}</b> {% if room.title %}<br />{{ room.title }} {% endif %}
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</li>
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</a>
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{% endfor %}
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</ul>
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</div>
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<div id="chat-container">
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<!-- Chat area where messages will be displayed -->
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<div id="chat"></div>
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<!-- Form for sending messages -->
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<form id="message-form">
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<textarea id="message" rows="4" placeholder="Type your message..."></textarea>
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</form>
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</div>
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</div>
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<script>
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// Connect to the server using socket.io
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const socket = io.connect("http://" + document.domain + ":" + location.port);
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// Retrieve username and room name from the URL parameters
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const urlParams = new URLSearchParams(window.location.search);
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const username = urlParams.get("username");
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const room_name = "{{ room_name }}";
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// Configuration for DOMPurify to specify which tags and attributes are allowed
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const dompurify_config = {
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ADD_TAGS: ["iframe", "img"],
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FORBID_TAGS: ["form"],
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ALLOWED_ATTR: [
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"src", "width", "height", "frameborder", "allowfullscreen",
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"alt", "class", "title", "style"
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]
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};
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// Function to handle sending the message
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function sendMessage() {
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const message = document.getElementById("message").value;
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if (message.trim() !== "") { // Ensure we're not sending empty messages
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socket.emit("message", {"username": username, "message": message, "room_name": room_name});
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document.getElementById("message").value = "";
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}
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}
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// Function to handle deleting a message
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function deleteMessage(messageId, room_name) {
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socket.emit("delete_message", {"message_id": messageId, "room_name": room_name});
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}
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// Event listener for form submission to send a message
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document.getElementById("message-form").addEventListener("submit", (e) => {
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e.preventDefault();
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sendMessage();
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});
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// Event listener for the Enter key press in the textarea to send a message
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document.getElementById("message").addEventListener("keydown", function(e) {
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if (e.key === "Enter" && !e.shiftKey) {
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e.preventDefault();
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sendMessage();
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}
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});
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// Socket event for updating the room title
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socket.on("update_room_title", (data) => {
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document.title = data.title; // Update the window's title
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});
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// Socket event to update the room title in the sidebar.
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socket.on('update_room_list', function(updatedRoom) {
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// Find the room list item by its data-room-id attribute
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const roomListItem = document.querySelector(`#rooms-list li[data-room-id="${updatedRoom.id}"]`);
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if (roomListItem) {
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// Update the room list item's content with the new title
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roomListItem.innerHTML = `<b>${updatedRoom.name}</b> ${updatedRoom.title ? '<br />' + updatedRoom.title : ''}`;
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}
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});
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// Socket event when the user connects
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socket.on("connect", () => {
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socket.emit("join", {"username": username, "room_name": room_name});
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});
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// Socket event for receiving a new message
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socket.on("message", (data) => {
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const messageWrapper = document.createElement("div");
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messageWrapper.className = "message-wrapper";
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messageWrapper.id = "message-" + data.id;
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const newMessage = document.createElement("p");
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// Check if the username is present and prepend it to the message content
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const messageContent = data.username ? `**${data.username}:**\n\n${data.content}` : data.content;
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newMessage.innerHTML = DOMPurify.sanitize(marked.marked(messageContent), dompurify_config);
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// Check if the message has an id which means we can delete it.
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if (data.id) {
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// Create the delete button
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const deleteButton = document.createElement("button");
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deleteButton.innerHTML = "x";
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deleteButton.onclick = () => deleteMessage(data.id, room_name);
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messageWrapper.appendChild(deleteButton);
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}
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messageWrapper.appendChild(newMessage);
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document.getElementById("chat").appendChild(messageWrapper);
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// Apply syntax highlighting to code blocks within the message
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newMessage.querySelectorAll("pre code").forEach((block) => {
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addCopyButtonToCodeBlock(block);
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truncateCodeBlock(block);
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hljs.highlightElement(block);
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addLineNumbers(block);
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});
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// Scroll to the bottom of the chat container
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document.getElementById("chat").scrollTop = document.getElementById("chat").scrollHeight;
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});
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// Socket event for receiving previous messages
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socket.on("previous_messages", (data) => {
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const messageWrapper = document.createElement("div");
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messageWrapper.className = "message-wrapper";
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messageWrapper.id = "message-" + data.id;
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const newMessage = document.createElement("p");
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newMessage.innerHTML = DOMPurify.sanitize(marked.marked(`**${data.username}:**\n\n${data.message}`), dompurify_config);
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// Create the delete button
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const deleteButton = document.createElement("button");
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deleteButton.innerHTML = "x";
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deleteButton.onclick = () => deleteMessage(data.id, room_name);
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messageWrapper.appendChild(deleteButton);
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messageWrapper.appendChild(newMessage);
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document.getElementById("chat").appendChild(messageWrapper);
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// Apply syntax highlighting to code blocks within the message
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newMessage.querySelectorAll("pre code").forEach((block) => {
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addCopyButtonToCodeBlock(block);
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truncateCodeBlock(block);
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hljs.highlightElement(block);
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addLineNumbers(block);
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});
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});
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// Socket event for deleting a processing message
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socket.on("delete_processing_message", (msg_id) => {
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const tempMessages = document.querySelectorAll("#message-null");
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tempMessages.forEach((tempMessage) => {
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tempMessage.remove();
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});
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// Clear the message buffer for the corresponding message ID
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delete messageBuffers[msg_id];
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});
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// A dictionary to hold buffers for each message ID
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const messageBuffers = {};
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// Socket event for receiving chunks of a message
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socket.on("message_chunk", (data) => {
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const wrapperId = "message-" + data.id;
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let messageWrapper = document.getElementById(wrapperId);
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let targetMessageElement;
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// If the message wrapper doesn't exist, it's an initial chunk
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if (!messageWrapper) {
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messageWrapper = document.createElement("div");
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messageWrapper.className = "message-wrapper";
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messageWrapper.id = wrapperId;
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document.getElementById("chat").appendChild(messageWrapper);
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// Create the "x" button for deletion
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const deleteButton = document.createElement("button");
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deleteButton.innerHTML = "x";
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deleteButton.onclick = () => deleteMessage(data.id, room_name);
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messageWrapper.appendChild(deleteButton);
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// Create the p element to hold the message content
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targetMessageElement = document.createElement("p");
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messageWrapper.appendChild(targetMessageElement);
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} else {
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// If the wrapper already exists, get the p element inside it
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targetMessageElement = messageWrapper.querySelector("p");
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}
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// If the message buffer for this ID doesn't exist, create it
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if (!messageBuffers[data.id]) {
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messageBuffers[data.id] = "";
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}
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// Append the chunk to the buffer
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messageBuffers[data.id] += data.content;
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// Process the entire buffer with marked and set it as the content of the target element
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targetMessageElement.innerHTML = DOMPurify.sanitize(marked.marked(messageBuffers[data.id]), dompurify_config);
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// Apply syntax highlighting to code blocks within the content
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targetMessageElement.querySelectorAll("pre code").forEach((block) => {
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addCopyButtonToCodeBlock(block);
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hljs.highlightElement(block);
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addLineNumbers(block);
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});
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// Scroll to the bottom of the chat container
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document.getElementById("chat").scrollTop = document.getElementById("chat").scrollHeight;
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});
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// Socket event for when a message is deleted
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socket.on("message_deleted", (data) => {
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const messageElement = document.getElementById("message-" + data.message_id);
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if (messageElement) {
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messageElement.remove();
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}
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});
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function truncateCodeBlock(block, maxLines = 100) {
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// Split the content by new lines and check if it exceeds the maxLines
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const lines = block.textContent.split('\n');
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if (lines.length > maxLines) {
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// Store the full content in a data attribute
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block.dataset.fullContent = block.textContent;
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// Truncate the displayed content
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const truncatedText = lines.slice(0, maxLines).join('\n') + '\n...';
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block.textContent = truncatedText;
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// Create a button to expand the code block
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const expandButton = document.createElement('button');
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expandButton.textContent = 'Show More';
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expandButton.onclick = function() {
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// Restore the full content from the data attribute
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block.textContent = block.dataset.fullContent;
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// Reapply syntax highlighting
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hljs.highlightElement(block);
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addLineNumbers(block);
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// Remove the expand button
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expandButton.remove();
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};
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// Insert the expand button after the code block
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block.parentNode.insertBefore(expandButton, block.nextSibling);
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}
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}
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// Modify the addCopyButtonToCodeBlock function to use the full content
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function addCopyButtonToCodeBlock(block) {
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// Check if the full content is stored in a data attribute, otherwise use textContent
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const contentToCopy = block.dataset.fullContent || block.textContent;
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// Create a button to copy the code block's content
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const copyButton = document.createElement('button');
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copyButton.textContent = 'Copy';
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copyButton.classList.add('copy-button'); // Add a class for styling if needed
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copyButton.onclick = function() {
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// Copy the content to the clipboard
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navigator.clipboard.writeText(contentToCopy).then(() => {
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// Optionally, indicate that the text was copied
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copyButton.textContent = 'Copied!';
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setTimeout(() => {
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copyButton.textContent = 'Copy';
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}, 2000); // Reset button text after 2 seconds
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}).catch(err => {
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console.error('Error copying text: ', err);
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});
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};
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// Insert the button before the code block
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block.parentNode.insertBefore(copyButton, block);
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}
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function addLineNumbers(block) {
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const lines = block.textContent.split('\n').length - 1;
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const lineNumbersWrapper = document.createElement('div');
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lineNumbersWrapper.className = 'line-numbers-rows';
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for (let i = 0; i < lines; i++) {
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lineNumbersWrapper.appendChild(document.createElement('span'));
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}
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block.appendChild(lineNumbersWrapper);
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}
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</script>
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</body>
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</html>
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