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worker.js
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worker.js
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var { workerData, parentPort } = require('worker_threads');
const EventEmitter = require("events");
const yts = require('yt-search');
const Spotify = require("spotifydl-core").default;
const scdl = require("soundcloud-downloader").default;
const YoutubeMusicApi = require('youtube-music-api-fix')
const meta = require("./src/probe.js");
if (!workerData && process.argv[2] !== "dev") {
console.log("Worker data shouldn't be empty!");
process.exit(0);
}
workerData ||= { jobId: "dev", data: {} };
class CompoundSearchEngine {
ytm = null;
yt = yts;
constructor() {}
init(ytm) {
this.ytm = ytm;
}
calcScore(data, query) {
const tokenized = query.split(" ");
const findMatchStart = (tokens, currPos=0) => {
if (currPos === tokens.length) return null;
const idx = tokenized.findIndex(t => t == tokens[currPos]);
if (idx === -1) return findMatchStart(tokens, ++currPos);
return [currPos, idx];
}
const [start, token] = findMatchStart(data.title.split(" "));
console.log(start, token);
}
search(query) {
return new Promise(async (res, rej) => {
query = query.toLowerCase();
const yt = (await this.yt(query)).videos?.map(v => {
return { // TODO: include description in calculations
title: v.title.toLowerCase(),
views: v.views,
id: v.videoId,
raw: v
}
});
const ytm = (await this.ytm.search(query)).content?.filter(c => c.type === "video" || c.type === "song")?.map(v => {
return {
type: v.type,
title: v.name.toLowerCase(),
views: null,
raw: v
}
});
console.log(ytm[0]);
this.calcScore(ytm[0], query);
});
}
}
class YTUtils extends EventEmitter {
constructor(spotify) {
super();
this.spotifyClient = null
this.spotifyConfig = spotify;
this.ytApi = null;
this.cEngine = new CompoundSearchEngine();
return this;
}
get api() {
this.ytApi ||= new YoutubeMusicApi();
return this.ytApi
}
get spotify() {
this.spotifyClient ||= new Spotify(this.spotifyConfig);
return this.spotifyClient;
}
init() {
if (Object.keys(this.api.ytcfg).length > 0) return true; // already initalized
return this.api.initalize();
}
error(data) {
this.emit("error", data);
}
prettifyTimestamp(ms) {
let mins = Math.floor(ms / 1000 / 60);
let secs = Math.floor(60 * ((ms / 1000/ 60) - mins));
let p = (n) => {
if (("" + n).length > 1) return "" + n;
return "0" + n;
}
let f = (t, curr=[]) => {
if (t < 60) {curr.push(p(t)); return curr.join(":");}
let nt = Math.floor(t / 60);
curr.push(p(nt));
return f(nt, curr);
}
return f(mins) + ":" + p(secs);
}
async compoundSearch(query) {
await this.init();
this.cEngine.init(this.api);
this.cEngine.search(query);
}
youtubeParser(url) {
var regExp = /^.*((youtu.be\/)|(v\/)|(\/u\/\w\/)|(embed\/)|(watch\?))\??v?=?([^#&?]*).*/;
var match = url.match(regExp);
return (match && match[7].length == 11) ? match[7] : false;
}
liveParser(url) {
var regExp = /^.*((youtu.be\/)|(v\/)|(\/u\/\w\/)|(embed\/)|(watch\?)|(live\/))\??v?=?([^#&?]*).*/;
var match = url.match(regExp);
return (match && match[8]) ? match[8] : false;
}
playlistParser(url) {
var match = url.match(/[&?]list=([^&]+)/i);
return (match || [0, false])[1];
}
async getResults(query, limit, provider) { // TODO: implement forwards/backwards feature
switch(provider){
case "yt":
var videos = (await yts(query)).videos;
videos = videos.slice(0, Math.min(limit, videos.length));
return {
data: videos
};
case "ytm":
await this.init();
// TODO: add support for albums, playlists, artists and videos
// TODO: improve above by editing youtube search package to include all
var results = (await this.api.search(query, "song")).content;
results = results.map(result => {
let r = {...result};
r.title = result.name
r.url = `https://music.youtube.com/watch?v=${result.videoId}`;
r.thumbnail = (Array.from(result.thumbnails).sort((a, b) => b.width - a.width)[0] || {}).url;
r.artists = ((Array.isArray(result.artist)) ?Array.from(result.artist) : [result.artist]).map(a => (a.url = `https://music.youtube.com/channel/${a.browseId}`, a))
return r;
}).slice(0, Math.min(limit, results.length));
return {
data: results
}
}
}
async getPlaylistData(playlist, query) {
// TODO: add youtube music playlist loading
this.emit("message", "Loading playlist items... (This may take a while)");
var videos;
try {
videos = await this.fetchPlaylist(playlist);
videos = videos.map((v) => {
v.url = "https://music.youtube.com/watch?v=" + v.videoId;
return v;
});
} catch (e) {
this.error(e);
this.emit("message", "Failed to load playlist. Maybe it's private?");
return false;
}
let parsed = this.youtubeParser(query);
if (videos) { this.emit("message", "Successfully added " + videos.length + " songs to the queue."); } else { this.emit("message", "**There was an error fetching the playlist '" + parsed + "'!**"); return false; };
return { type: "list", data: videos };
}
getSpotifyAlbum(id, type="album") {
return new Promise(async (res) => {
this.emit("message", "Loading " + type + " songs... (This may take a while)");
const album = await ((type == "album") ? this.spotify.getAlbum : this.spotify.getPlaylist)("https://open.spotify.com/" + type + "/" + id);
var load = (trackId) => {
return new Promise(async res => {
const track = await this.spotify.getTrack("https://open.spotify.com/track/" + trackId);
res(await this.search(track.name + " " + track.artists[0]))
});
}
Promise.allSettled(album.tracks.map(a => load(a))).then((d) => {
d = d.map(e=>e.value);
this.emit("message", "Successfully added " + d.length + " songs to the queue.");
res({ type: "list", data: d});
});
});
}
getSpotifyPlaylist(id) {
return this.getSpotifyAlbum(id, "playlist")
}
async getByQuery(query, provider) { // either yt or ytm
this.emit("message", "Searching...");
if (provider === "ytm") {
await this.init();
const results = (await this.api.search(query, "song")).content;
const song = results[0];
if (!song) { this.emit("message", "**There was an error loading the youtube music song using the query '" + query + "'!**"); return false;}
const r = {...song};
r.title = song.name;
r.url = `https://music.youtube.com/watch?v=${song.videoId}`;
r.thumbnail = (Array.from(song.thumbnails).sort((a, b) => b.width - a.width)[0] || {}).url;
r.artists = ((Array.isArray(song.artist)) ?Array.from(song.artist) : [song.artist]).map(a => (a.url = `https://music.youtube.com/channel/${a.browseId}`, a))
this.emit("message", `Successfully added [${r.title}](${r.url}) to the queue.`)
return { type: "video", data: r };
}
let video = await this.search(query);
if (video) { this.emit("message", `Successfully added [${video.title}](${video.url}) to the queue.`); } else { this.emit("message", "**There was an error loading a youtube video using the query '" + query + "'!**") };
if (!video) return false;
return { type: "video", data: video };
}
async getById(parsedId, live) {
this.emit("message", "Loading video data...");
let video = await this.search(parsedId, true);
if (video) { this.emit("message", `Successfully added [${video.title}](${video.url}) to the queue.`); } else { this.emit("message", "**There was an error loading the youtube video with the id '" + parsedId + "'!**" ) };
if (!video) return false;
if (live) {
video.duration.timestamp = "live";
video.url = "https://youtube.com/live/" + parsedId;
}
return { type: "video", data: video };
}
async getBySpotifyId(id){
this.emit("message", "Loading video data...");
let song = await this.spotify.getTrack("https://open.spotify.com/track/" + id);
this.emit("message", "Resolving Spotify track in Youtube.");
/*let d = {
title: song.name,
url: "https://open.spotify.com/track/" + id,
thumbnail: song.cover_url,
type: "spotify"
}*/
return await this.getByQuery(song.name + " " + song.artists[0]);
}
isMedia(url) {
return new Promise(res => {
require("https").get(url, function(r) {
res(["audio", "video"].includes(r.headers["content-type"].slice(0, r.headers["content-type"].indexOf("/"))));
});
});
}
unknownMedia(url) {
return new Promise(async res => {
const fileName = new URL(url).pathname.split('/').pop();
this.emit("message", "Fetching meta data...");
const data = await meta(url);
data.title ||= (fileName.length > 0) ? fileName : "Unknown";
data.album ||= "Unknown";
data.artist ||= "Unknown Artist";
data.thumbnail = null;
data.url = url;
data.type = "external";
data.author = {
name: data.artist,
url: "#"
}
this.emit("message", `Added [${data.title}](${data.url}) to the queue.`);
res({ type: "video", data: data });
});
}
async getVideoData(query, provider="yt") {
if (this.isSoundCloud(query)) return await this.getScdl(query);
if (this.isSpotify(query)) return await this.getSpotifyData(query);
let playlist = this.playlistParser(query);
// fetch playlist data
if (playlist) return await this.getPlaylistData(playlist, query);
let parsed = this.youtubeParser(query);
if (!parsed) {
const live = this.liveParser(query);
if (live) await this.getById(live, true);
// not a yt id
if (query.match(/(http(s)?:\/\/.)?(www\.)?[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)/g)) {
// unknown valid url; use yt-dlp to stream it
if (await this.isMedia(query)) return await this.unknownMedia(query);
}
return await this.getByQuery(query, provider);
}
// fetch youtube video data by id
return await this.getById(parsed);
}
async search(string, id) {
return (id) ? await yts({ videoId: string }) : (await yts(string)).videos[0];
}
async fetchPlaylist(id) {
return (await yts({ listId: id })).videos;
}
isSpotify(str) {
return /^(?:spotify:|(?:https?:\/\/(?:open|play)\.spotify\.com\/))(?:embed)?\/?(album|track|playlist)(?::|\/)((?:[0-9a-zA-Z]){22})/.test(str);
}
async getSpotifyData(query) {
const match = query.match(/^(?:spotify:|(?:https?:\/\/(?:open|play)\.spotify\.com\/))(?:embed)?\/?(album|track|playlist)(?::|\/)((?:[0-9a-zA-Z]){22})/);
if (!match) return null;
const type = match[1];
const id = match[2];
if (type == "album") return await this.getSpotifyAlbum(match[2]);
if (type == "playlist") return await this.getSpotifyPlaylist(match[2]);
return await this.getBySpotifyId(id);
}
parseScdlInput(i) {
const regex = /(?<url>((https:\/\/)|(http:\/\/)|(www.)|(m\.)|(\s))+(soundcloud.com\/)+(?<artist>[a-zA-Z0-9\-\.]+)(\/)+(?<id>[a-zA-Z0-9\-\.]+))/gmi;
const res = regex.exec(i);
if (!res) return false;
return res.groups;
}
isSoundCloud(query) {
return !!this.parseScdlInput(query);
}
// TODO: soundcloud albums, playlists
async getScdl(query) {
const data = this.parseScdlInput(query);
this.emit("message", "Loading SoundCloud info...");
const info = await scdl.getInfo(data.url)
this.emit("message", "Successfully added to queue.");
return {
type: "video",
data: {
type: "soundcloud",
url: data.url,
thumbnail: info.artwork_url,
duration: {
timestamp: this.prettifyTimestamp(info.full_duration)
},
title: info.title,
author: {
name: info.user.username,
url: info.user.permalink_url
}
}
}
}
}
const jobId = workerData.jobId;
const data = workerData.data;
const utils = new YTUtils(data.spotify);
//utils.compoundSearch("thefatrat escaping gravity")
utils.on("message", (content) => {
post("message", content);
});
utils.on("error", (msg) => {
post("error", msg);
});
const post = (event, data) => {
return parentPort.postMessage(JSON.stringify({ event: event, data: data }));
}
(async () => {
if (jobId === "dev") return;
var r = null;
switch(jobId) {
case "search":
let result = await utils.search(data, true);
post("finished", result);
break;
case "generalQuery":
r = (await utils.getVideoData(data.query, data.provider));
post("finished", r);
break;
case "searchResults":
r = await utils.getResults(data.query, data.resultCount, data.provider);
post("finished", r);
break;
default:
console.log("Invalid jobId");
process.exit(0);
}
process.exit(1);
})();