mirror of
https://github.com/th-ch/youtube-music.git
synced 2026-01-11 02:31:45 +00:00
415 lines
13 KiB
JavaScript
415 lines
13 KiB
JavaScript
const { existsSync, mkdirSync, createWriteStream, writeFileSync } = require('fs');
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const { join } = require("path");
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const { fetchFromGenius } = require("../lyrics-genius/back");
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const { isEnabled } = require("../../config/plugins");
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const { getImage } = require("../../providers/song-info");
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const { injectCSS } = require("../utils");
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const { presets, cropMaxWidth, getFolder, setBadge, sendFeedback: sendFeedback_ } = require('./utils');
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const { ipcMain, app, dialog } = require("electron");
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const is = require("electron-is");
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const { Innertube, UniversalCache, Utils } = require('youtubei.js');
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const ytpl = require("ytpl"); // REPLACE with youtubei getplaylist https://github.com/LuanRT/YouTube.js#getplaylistid
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const filenamify = require("filenamify");
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const ID3Writer = require("browser-id3-writer");
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const { randomBytes } = require("crypto");
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const Mutex = require("async-mutex").Mutex;
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const ffmpeg = require("@ffmpeg/ffmpeg").createFFmpeg({
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log: false,
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logger: () => { }, // console.log,
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progress: () => { }, // console.log,
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});
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const ffmpegMutex = new Mutex();
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const cache = {
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getCoverBuffer: {
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buffer: null,
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url: null,
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}
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}
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const config = require("./config");
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/** @type {Innertube} */
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let yt;
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let win;
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let playingUrl = undefined;
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const sendError = (error) => {
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win.setProgressBar(-1); // close progress bar
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setBadge(0); // close badge
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sendFeedback_(win); // reset feedback
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console.error(error);
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dialog.showMessageBox({
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type: "info",
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buttons: ["OK"],
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title: "Error in download!",
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message: "Argh! Apologies, download failed…",
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detail: error.toString(),
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});
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};
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module.exports = async (win_, options) => {
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win = win_;
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config.init(options);
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injectCSS(win.webContents, join(__dirname, "style.css"));
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yt = await Innertube.create({ cache: new UniversalCache(false), generate_session_locally: true });
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ipcMain.on("download-song", (_, url) => downloadSong(url));
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ipcMain.on("video-src-changed", async (_, data) => {
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playingUrl = JSON.parse(data)?.microformat?.microformatDataRenderer?.urlCanonical;
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});
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ipcMain.on("download-playlist-request", async (_event, url) => downloadPlaylist(url));
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};
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module.exports.downloadSong = downloadSong;
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async function downloadSong(url, playlistFolder = undefined, trackId = undefined, increasePlaylistProgress = () => { }) {
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const sendFeedback = (message, progress) => {
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if (!playlistFolder) {
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sendFeedback_(win, message);
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if (!isNaN(progress)) {
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win.setProgressBar(progress);
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}
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}
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};
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sendFeedback(`Downloading...`, 2);
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const id = getVideoId(url);
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const info = await yt.music.getInfo(id);
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const metadata = getMetadata(info);
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if (metadata.album === 'N/A') metadata.album = '';
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metadata.trackId = trackId;
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const dir = playlistFolder || config.get('downloadFolder') || app.getPath("downloads");
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const name = `${metadata.artist ? `${metadata.artist} - ` : ""}${metadata.title}`;
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const extension = presets[config.get('preset')]?.extension || 'mp3';
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const filename = filenamify(`${name}.${extension}`, {
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replacement: "_",
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maxLength: 255,
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});
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const filePath = join(dir, filename);
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if (config.get('skipExisting') && existsSync(filePath)) {
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sendFeedback(null, -1);
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return;
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}
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const download_options = {
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type: 'audio', // audio, video or video+audio
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quality: 'best', // best, bestefficiency, 144p, 240p, 480p, 720p and so on.
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format: 'any' // media container format
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};
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const format = info.chooseFormat(download_options);
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const stream = await info.download(download_options);
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console.info(`Downloading ${metadata.artist} - ${metadata.title} [${metadata.id}]`);
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const iterableStream = Utils.streamToIterable(stream);
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if (!existsSync(dir)) {
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mkdirSync(dir);
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}
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if (!presets[config.get('preset')]) {
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const fileBuffer = await iterableStreamToMP3(iterableStream, metadata, format.content_length, sendFeedback, increasePlaylistProgress);
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writeFileSync(filePath, await writeID3(fileBuffer, metadata, sendFeedback));
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} else {
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const file = createWriteStream(filePath);
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let downloaded = 0;
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let total = format.content_length;
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for await (const chunk of iterableStream) {
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downloaded += chunk.length;
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const ratio = downloaded / total;
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const progress = Math.floor(ratio * 100);
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sendFeedback("Download: " + progress + "%", ratio);
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increasePlaylistProgress(ratio);
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file.write(chunk);
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}
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await ffmpegWriteTags(filePath, metadata, presets[config.get('preset')]?.ffmpegArgs);
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sendFeedback(null, -1);
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}
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sendFeedback(null, -1);
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console.info(`Done: "${filePath}"`);
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}
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async function iterableStreamToMP3(stream, metadata, content_length, sendFeedback, increasePlaylistProgress = () => { }) {
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const chunks = [];
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let downloaded = 0;
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let total = content_length;
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for await (const chunk of stream) {
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downloaded += chunk.length;
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chunks.push(chunk);
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const ratio = downloaded / total;
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const progress = Math.floor(ratio * 100);
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sendFeedback("Download: " + progress + "%", ratio);
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// 15% for download, 85% for conversion
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// This is a very rough estimate, trying to make the progress bar look nice
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increasePlaylistProgress(ratio * 0.15);
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}
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sendFeedback("Loading…", 2); // indefinite progress bar after download
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const buffer = Buffer.concat(chunks);
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const safeVideoName = randomBytes(32).toString("hex");
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const releaseFFmpegMutex = await ffmpegMutex.acquire();
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try {
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if (!ffmpeg.isLoaded()) {
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await ffmpeg.load();
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}
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sendFeedback("Preparing file…");
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ffmpeg.FS("writeFile", safeVideoName, buffer);
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sendFeedback("Converting…");
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ffmpeg.setProgress(({ ratio }) => {
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sendFeedback("Converting: " + Math.floor(ratio * 100) + "%", ratio);
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increasePlaylistProgress(0.15 + ratio * 0.85);
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});
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await ffmpeg.run(
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"-i",
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safeVideoName,
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...getFFmpegMetadataArgs(metadata),
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safeVideoName + ".mp3"
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);
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sendFeedback("Saving…");
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return ffmpeg.FS("readFile", safeVideoName + ".mp3");
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} catch (e) {
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sendError(e);
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} finally {
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releaseFFmpegMutex();
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}
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}
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async function getCoverBuffer(url) {
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const store = cache.getCoverBuffer;
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if (store.url === url) {
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return store.buffer;
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}
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store.url = url;
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const nativeImage = cropMaxWidth(await getImage(url));
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store.buffer = nativeImage && !nativeImage.isEmpty() ?
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nativeImage.toPNG() : null;
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return store.buffer;
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}
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async function writeID3(buffer, metadata, sendFeedback) {
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try {
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sendFeedback("Writing ID3 tags...");
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const coverBuffer = await getCoverBuffer(metadata.image);
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const writer = new ID3Writer(buffer);
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// Create the metadata tags
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writer
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.setFrame("TIT2", metadata.title)
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.setFrame("TPE1", [metadata.artist]);
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if (metadata.album) {
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writer.setFrame("TALB", metadata.album);
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}
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if (coverBuffer) {
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writer.setFrame("APIC", {
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type: 3,
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data: coverBuffer,
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description: "",
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});
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}
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if (isEnabled("lyrics-genius")) {
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const lyrics = await fetchFromGenius(metadata);
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if (lyrics) {
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writer.setFrame("USLT", {
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description: '',
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lyrics: lyrics,
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});
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}
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}
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if (metadata.trackId) {
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writer.setFrame("TRCK", metadata.trackId);
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}
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writer.addTag();
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return Buffer.from(writer.arrayBuffer);
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} catch (e) {
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sendError(e);
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}
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}
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async function downloadPlaylist(givenUrl) {
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if (givenUrl) {
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try {
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givenUrl = new URL(givenUrl);
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} catch {
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givenUrl = undefined;
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};
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}
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const playlistId = getPlaylistID(givenUrl)
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|| getPlaylistID(new URL(win.webContents.getURL()))
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|| getPlaylistID(new URL(playingUrl));
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if (!playlistId) {
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sendError(new Error("No playlist ID found"));
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return;
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}
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const sendFeedback = message => sendFeedback_(win, message);
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console.log(`trying to get playlist ID: '${playlistId}'`);
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sendFeedback("Getting playlist info…");
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let playlist;
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try {
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playlist = await ytpl(playlistId, {
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limit: config.get('playlistMaxItems') || Infinity,
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});
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} catch (e) {
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sendError("Error getting playlist info: make sure it isn't a private or \"Mixed for you\" playlist\n\n" + e);
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return;
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}
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if (playlist.items.length === 0) sendError(new Error("Playlist is empty"));
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if (playlist.items.length === 1) {
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sendFeedback("Playlist has only one item, downloading it directly");
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await downloadSong(playlist.items[0].url);
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return;
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}
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let isAlbum = playlist.title.startsWith('Album - ');
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if (isAlbum) {
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playlist.title = playlist.title.slice(8);
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}
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const safePlaylistTitle = filenamify(playlist.title, { replacement: ' ' });
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const folder = getFolder(config.get('downloadFolder'));
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const playlistFolder = join(folder, safePlaylistTitle);
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if (existsSync(playlistFolder)) {
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if (!config.get('skipExisting')) {
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sendError(new Error(`The folder ${playlistFolder} already exists`));
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return;
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}
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} else {
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mkdirSync(playlistFolder, { recursive: true });
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}
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dialog.showMessageBox({
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type: "info",
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buttons: ["OK"],
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title: "Started Download",
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message: `Downloading Playlist "${playlist.title}"`,
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detail: `(${playlist.items.length} songs)`,
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});
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if (is.dev()) {
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console.log(
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`Downloading playlist "${playlist.title}" - ${playlist.items.length} songs (${playlistId})`
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);
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}
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win.setProgressBar(2); // starts with indefinite bar
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setBadge(playlist.items.length);
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let counter = 1;
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const progressStep = 1 / playlist.items.length;
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const increaseProgress = (itemPercentage) => {
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const currentProgress = (counter - 1) / playlist.items.length;
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const newProgress = currentProgress + (progressStep * itemPercentage);
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win.setProgressBar(newProgress);
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};
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try {
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for (const song of playlist.items) {
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sendFeedback(`Downloading ${counter}/${playlist.items.length}...`);
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const trackId = isAlbum ? counter : undefined;
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await downloadSong(song.url, playlistFolder, trackId, increaseProgress)
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.catch((e) => sendError(`Error downloading "${song.author.name} - ${song.title}":\n ${e}`));
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win.setProgressBar(counter / playlist.items.length);
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setBadge(playlist.items.length - counter);
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counter++;
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}
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} catch (e) {
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sendError(e);
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} finally {
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win.setProgressBar(-1); // close progress bar
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setBadge(0); // close badge counter
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sendFeedback(); // clear feedback
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}
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}
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async function ffmpegWriteTags(filePath, metadata, ffmpegArgs = []) {
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const releaseFFmpegMutex = await ffmpegMutex.acquire();
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try {
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if (!ffmpeg.isLoaded()) {
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await ffmpeg.load();
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}
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await ffmpeg.run(
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"-i",
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filePath,
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...getFFmpegMetadataArgs(metadata),
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...ffmpegArgs,
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filePath
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);
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} catch (e) {
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sendError(e);
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} finally {
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releaseFFmpegMutex();
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}
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}
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function getFFmpegMetadataArgs(metadata) {
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if (!metadata) {
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return;
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}
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return [
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...(metadata.title ? ["-metadata", `title=${metadata.title}`] : []),
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...(metadata.artist ? ["-metadata", `artist=${metadata.artist}`] : []),
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...(metadata.album ? ["-metadata", `album=${metadata.album}`] : []),
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...(metadata.trackId ? ["-metadata", `track=${metadata.trackId}`] : []),
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];
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};
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// Playlist radio modifier needs to be cut from playlist ID
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const INVALID_PLAYLIST_MODIFIER = 'RDAMPL';
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const getPlaylistID = aURL => {
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const result = aURL?.searchParams.get("list") || aURL?.searchParams.get("playlist");
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if (result?.startsWith(INVALID_PLAYLIST_MODIFIER)) {
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return result.slice(6)
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}
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return result;
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};
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const getVideoId = url => {
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if (typeof url === "string") {
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url = new URL(url);
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}
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return url.searchParams.get("v");
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}
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const getMetadata = (info) => ({
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id: info.basic_info.id,
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title: info.basic_info.title,
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artist: info.basic_info.author,
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album: info.player_overlays?.browser_media_session?.album?.text,
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image: info.basic_info.thumbnail[0].url,
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});
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