watch-party/frontend/lib/chat.mjs

287 lines
7.6 KiB
JavaScript

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 = "";
if (
content.toLowerCase() == "/ping" ||
content.toLowerCase().startsWith("/ping ")
) {
socket.send(
JSON.stringify({
op: "Ping",
data: content.slice(5).trim(),
})
);
} else {
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, colour, 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.style = `color: #${colour}`;
userName.textContent = user;
chatMessage.appendChild(userName);
}
chatMessage.appendChild(document.createTextNode(" "));
if (content != null) {
chatMessage.appendChild(content);
}
addToChat(chatMessage);
return chatMessage;
};
const formatTime = (ms) => {
const seconds = Math.floor((ms / 1000) % 60);
const minutes = Math.floor((ms / (60 * 1000)) % 60);
const hours = Math.floor((ms / (3600 * 1000)) % 3600);
return `${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,
event.colour,
document.createTextNode("joined")
);
break;
}
case "UserLeave": {
printChatMessage(
"user-leave",
event.user,
event.colour,
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,
event.colour,
messageContent
);
break;
}
case "SetTime": {
const messageContent = document.createElement("span");
if (event.data.from != undefined) {
messageContent.appendChild(
document.createTextNode("set the time from ")
);
messageContent.appendChild(
document.createTextNode(formatTime(event.data.from))
);
messageContent.appendChild(document.createTextNode(" to "));
} else {
messageContent.appendChild(document.createTextNode("set the time to "));
}
messageContent.appendChild(
document.createTextNode(formatTime(event.data.to))
);
printChatMessage("set-time", event.user, event.colour, 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, event.colour, messageContent);
break;
}
case "Ping": {
const messageContent = document.createElement("span");
if (event.data) {
messageContent.appendChild(document.createTextNode("pinged saying: "));
messageContent.appendChild(document.createTextNode(event.data));
} else {
messageContent.appendChild(document.createTextNode("pinged"));
}
printChatMessage("ping", event.user, event.colour, messageContent);
beep();
break;
}
}
};
const beep = () => {
const context = new AudioContext();
const gain = context.createGain();
gain.connect(context.destination);
gain.gain.value = 0.1;
const oscillator = context.createOscillator();
oscillator.connect(gain);
oscillator.frequency.value = 520;
oscillator.type = "square";
oscillator.start(context.currentTime);
oscillator.stop(context.currentTime + 0.22);
};
export const updateViewerList = (viewers) => {
const listContainer = document.querySelector("#viewer-list");
// empty out the current list
listContainer.innerHTML = "";
// display the updated list
for (const viewer of viewers) {
const viewerElem = document.createElement("div");
const content = document.createElement("strong");
content.textContent = viewer.nickname;
content.style = `color: #${viewer.colour}`;
viewerElem.appendChild(content);
listContainer.appendChild(viewerElem);
}
};