const setupChatboxEvents = (socket) => { // clear events by just reconstructing the form const oldChatForm = document.querySelector("#chatbox-send"); const chatForm = oldChatForm.cloneNode(true); oldChatForm.replaceWith(chatForm); chatForm.addEventListener("submit", (e) => { e.preventDefault(); const input = chatForm.querySelector("input"); const content = input.value; if (content.trim().length) { input.value = ""; socket.send( JSON.stringify({ op: "ChatMessage", data: content, }) ); } }); }; const fixChatSize = () => { const video = document.querySelector("video"); const chatbox = document.querySelector("#chatbox"); const chatboxContainer = document.querySelector("#chatbox-container"); if (video && chatbox && chatboxContainer) { const delta = chatboxContainer.clientHeight - chatbox.clientHeight; chatbox.style["height"] = `calc(${ window.innerHeight - video.clientHeight }px - ${delta}px - 1em)`; } }; /** * @param {WebSocket} socket */ export const setupChat = async (socket) => { document.querySelector("#chatbox-container").style["display"] = "block"; setupChatboxEvents(socket); window.addEventListener("keydown", event => { try { const isSelectionEmpty = window.getSelection().toString().length === 0; if (event.code.match(/Key\w/) && isSelectionEmpty) document.querySelector("#chatbox-send > input").focus() } catch (_err) { } }); fixChatSize(); window.addEventListener("resize", () => { fixChatSize(); }); }; const addToChat = (node) => { const chatbox = document.querySelector("#chatbox"); chatbox.appendChild(node); chatbox.scrollTop = chatbox.scrollHeight; }; let lastTimeMs = null; let lastPlaying = false; const checkDebounce = (event) => { let timeMs = null; let playing = null; if (event.op == "SetTime") { timeMs = event.data; } else if (event.op == "SetPlaying") { timeMs = event.data.time; playing = event.data.playing; } let shouldIgnore = false; if (timeMs != null) { if (lastTimeMs && Math.abs(lastTimeMs - timeMs) < 500) { shouldIgnore = true; } lastTimeMs = timeMs; } if (playing != null) { if (lastPlaying != playing) { shouldIgnore = false; } lastPlaying = playing; } return shouldIgnore; }; /** * @returns {string} */ const getCurrentTimestamp = () => { const t = new Date(); return `${matpad(t.getHours())}:${matpad(t.getMinutes())}:${matpad(t.getSeconds())}`; }; /** * https://media.discordapp.net/attachments/834541919568527361/931678814751301632/66d2c68c48daa414c96951381665ec2e.png */ const matpad = (n) => { return ("00" + n).slice(-2); }; /** * @param {string} eventType * @param {string?} user * @param {Node?} content */ const printChatMessage = (eventType, user, content) => { const chatMessage = document.createElement("div"); chatMessage.classList.add("chat-message"); chatMessage.classList.add(eventType); chatMessage.title = getCurrentTimestamp(); if (user != null) { const userName = document.createElement("strong"); userName.textContent = user; chatMessage.appendChild(userName); } chatMessage.appendChild(document.createTextNode(" ")); if (content != null) { chatMessage.appendChild(content); } addToChat(chatMessage); return chatMessage; }; const formatTime = (ms) => { const seconds = Math.floor((ms / 1000) % 60); const minutes = Math.floor((ms / (60 * 1000)) % 60); const hours = Math.floor((ms / (3600 * 1000)) % 3600); return `${hours < 10 ? "0" + hours : hours}:${ minutes < 10 ? "0" + minutes : minutes }:${seconds < 10 ? "0" + seconds : seconds}`; }; export const logEventToChat = (event) => { if (checkDebounce(event)) { return; } switch (event.op) { case "UserJoin": { printChatMessage( "user-join", event.user, document.createTextNode("joined") ); break; } case "UserLeave": { printChatMessage( "user-leave", event.user, document.createTextNode("left") ); break; } case "ChatMessage": { const messageContent = document.createElement("span"); messageContent.classList.add("message-content"); messageContent.textContent = event.data; printChatMessage("chat-message", event.user, messageContent); break; } case "SetTime": { const messageContent = document.createElement("span"); messageContent.appendChild(document.createTextNode("set the time to ")); messageContent.appendChild( document.createTextNode(formatTime(event.data)) ); printChatMessage("set-time", event.user, messageContent); break; } case "SetPlaying": { const messageContent = document.createElement("span"); messageContent.appendChild( document.createTextNode( event.data.playing ? "started playing" : "paused" ) ); messageContent.appendChild(document.createTextNode(" at ")); messageContent.appendChild( document.createTextNode(formatTime(event.data.time)) ); printChatMessage("set-playing", event.user, messageContent); break; } } };