twitch-chat/static/main.js

105 lines
3.3 KiB
JavaScript

const timeout = 120000;
class Message {
constructor(object, onDestroy) {
this.target = object.target;
this.context = object.context;
this.message = object.message;
this.self = object.self;
}
createEl() {
this.element = document.createElement('li');
this.element.className = "item";
this.element.style.position = "relative";
let badges = document.createElement('span');
for (let key in this.context.badges) {
let badge = document.createElement('span');
badge.className = "badge";
badge.innerHTML = '<img src="/static/' + key + '.png">';
badges.appendChild(badge);
}
this.element.appendChild(badges);
let name = document.createElement('span');
name.className = "text name";
name.style.color = this.context.color;
name.innerHTML = escapeHtml(this.context["display-name"]);
this.element.appendChild(name);
let message = document.createElement('span');
let text = formatEmotes(this.message, this.context.emotes);
text = replaceAll(text, "DragonRck", '<img class="emoticon" src="/static/dragonrck.png">');
message.innerHTML = text;
message.className = "text message";
this.element.appendChild(message);
setTimeout(() => this.destroy(), timeout);
return this.element;
}
destroy() {
this.element.className += ' destroy';
}
}
function escapeHtml(unsafe) {
return unsafe
.replace(/&/g, "&amp;")
.replace(/</g, "&lt;")
.replace(/>/g, "&gt;")
.replace(/"/g, "&quot;")
.replace(/'/g, "&#039;");
}
function formatEmotes(text, emotes) {
var splitText = text.split('');
for(var i in emotes) {
var e = emotes[i];
for(var j in e) {
var mote = e[j];
if(typeof mote == 'string') {
mote = mote.split('-');
mote = [parseInt(mote[0]), parseInt(mote[1])];
var length = mote[1] - mote[0],
empty = Array.apply(null, new Array(length + 1)).map(function() { return '' });
splitText = splitText.slice(0, mote[0]).concat(empty).concat(splitText.slice(mote[1] + 1, splitText.length));
splitText = splitText.map((x) => escapeHtml(x));
splitText.splice(mote[0], 1, '<img class="emoticon" src="http://static-cdn.jtvnw.net/emoticons/v1/' + i + '/3.0">');
}
}
}
return splitText.join('');
}
function replaceAll(input, from, to) {
const fromLen = from.length;
let output = "";
let pos = 0;
for (;;) {
let matchPos = input.indexOf(from, pos);
if (matchPos === -1) {
output += input.slice(pos);
break;
}
output += input.slice(pos, matchPos);
output += to;
pos = matchPos + fromLen;
}
return output;
}
function addMessage(object) {
messages .className = "";
let message = new Message(object);
messages.appendChild(message.createEl());
messages.style.bottom = '-' + message.element.offsetHeight + 'px';
messages.className = "slide";
};
let messages = document.getElementById('messages');
let socket = io();
socket.on('message', addMessage);