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633 lines
28 KiB
JavaScript
633 lines
28 KiB
JavaScript
const fs = require('fs-extra');
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const { uuid } = require('uuidv4');
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const path = require('path');
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const NodeID3 = require('node-id3')
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const Mutex = require('async-mutex').Mutex;
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const youtubedl = require('youtube-dl');
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const logger = require('./logger');
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const config_api = require('./config');
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const twitch_api = require('./twitch');
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const { create } = require('xmlbuilder2');
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const categories_api = require('./categories');
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const utils = require('./utils');
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const db_api = require('./db');
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const files_api = require('./files');
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const notifications_api = require('./notifications');
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const archive_api = require('./archive');
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const mutex = new Mutex();
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let should_check_downloads = true;
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if (db_api.database_initialized) {
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setupDownloads();
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} else {
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db_api.database_initialized_bs.subscribe(init => {
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if (init) setupDownloads();
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});
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}
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/*
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This file handles all the downloading functionality.
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To download a file, we go through 4 steps. Here they are with their respective index & function:
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0: Create the download
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- createDownload()
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1: Get info for the download (we need this step for categories and archive functionality)
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- collectInfo()
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2: Download the file
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- downloadQueuedFile()
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3: Complete
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- N/A
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We use checkDownloads() to move downloads through the steps and call their respective functions.
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*/
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exports.createDownload = async (url, type, options, user_uid = null, sub_id = null, sub_name = null, prefetched_info = null) => {
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return await mutex.runExclusive(async () => {
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const download = {
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url: url,
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type: type,
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title: '',
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user_uid: user_uid,
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sub_id: sub_id,
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sub_name: sub_name,
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prefetched_info: prefetched_info,
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options: options,
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uid: uuid(),
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step_index: 0,
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paused: false,
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running: false,
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finished_step: true,
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error: null,
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percent_complete: null,
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finished: false,
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timestamp_start: Date.now()
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};
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await db_api.insertRecordIntoTable('download_queue', download);
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should_check_downloads = true;
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return download;
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});
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}
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exports.pauseDownload = async (download_uid) => {
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const download = await db_api.getRecord('download_queue', {uid: download_uid});
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if (download['paused']) {
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logger.warn(`Download ${download_uid} is already paused!`);
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return false;
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} else if (download['finished']) {
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logger.info(`Download ${download_uid} could not be paused before completing.`);
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return false;
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}
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return await db_api.updateRecord('download_queue', {uid: download_uid}, {paused: true, running: false});
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}
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exports.resumeDownload = async (download_uid) => {
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return await mutex.runExclusive(async () => {
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const download = await db_api.getRecord('download_queue', {uid: download_uid});
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if (!download['paused']) {
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logger.warn(`Download ${download_uid} is not paused!`);
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return false;
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}
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const success = db_api.updateRecord('download_queue', {uid: download_uid}, {paused: false});
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should_check_downloads = true;
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return success;
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})
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}
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exports.restartDownload = async (download_uid) => {
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const download = await db_api.getRecord('download_queue', {uid: download_uid});
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await exports.clearDownload(download_uid);
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const new_download = await exports.createDownload(download['url'], download['type'], download['options'], download['user_uid']);
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should_check_downloads = true;
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return new_download;
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}
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exports.cancelDownload = async (download_uid) => {
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const download = await db_api.getRecord('download_queue', {uid: download_uid});
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if (download['cancelled']) {
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logger.warn(`Download ${download_uid} is already cancelled!`);
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return false;
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} else if (download['finished']) {
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logger.info(`Download ${download_uid} could not be cancelled before completing.`);
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return false;
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}
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return await db_api.updateRecord('download_queue', {uid: download_uid}, {cancelled: true, running: false});
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}
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exports.clearDownload = async (download_uid) => {
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return await db_api.removeRecord('download_queue', {uid: download_uid});
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}
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async function handleDownloadError(download, error_message, error_type = null) {
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if (!download || !download['uid']) return;
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notifications_api.sendDownloadErrorNotification(download, download['user_uid'], error_message, error_type);
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await db_api.updateRecord('download_queue', {uid: download['uid']}, {error: error_message, finished: true, running: false, error_type: error_type});
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}
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async function setupDownloads() {
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await fixDownloadState();
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setInterval(checkDownloads, 1000);
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}
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async function fixDownloadState() {
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const downloads = await db_api.getRecords('download_queue');
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downloads.sort((download1, download2) => download1.timestamp_start - download2.timestamp_start);
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const running_downloads = downloads.filter(download => !download['finished'] && !download['error']);
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for (let i = 0; i < running_downloads.length; i++) {
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const running_download = running_downloads[i];
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const update_obj = {finished_step: true, paused: true, running: false};
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if (running_download['step_index'] > 0) {
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update_obj['step_index'] = running_download['step_index'] - 1;
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}
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await db_api.updateRecord('download_queue', {uid: running_download['uid']}, update_obj);
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}
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}
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async function checkDownloads() {
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if (!should_check_downloads) return;
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const downloads = await db_api.getRecords('download_queue');
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downloads.sort((download1, download2) => download1.timestamp_start - download2.timestamp_start);
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await mutex.runExclusive(async () => {
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// avoid checking downloads unnecessarily, but double check that should_check_downloads is still true
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const running_downloads = downloads.filter(download => !download['paused'] && !download['finished']);
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if (running_downloads.length === 0) {
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should_check_downloads = false;
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logger.verbose('Disabling checking downloads as none are available.');
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}
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return;
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});
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let running_downloads_count = downloads.filter(download => download['running']).length;
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const waiting_downloads = downloads.filter(download => !download['paused'] && download['finished_step'] && !download['finished']);
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for (let i = 0; i < waiting_downloads.length; i++) {
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const waiting_download = waiting_downloads[i];
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const max_concurrent_downloads = config_api.getConfigItem('ytdl_max_concurrent_downloads');
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if (max_concurrent_downloads < 0 || running_downloads_count >= max_concurrent_downloads) break;
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if (waiting_download['finished_step'] && !waiting_download['finished']) {
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if (waiting_download['sub_id']) {
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const sub_missing = !(await db_api.getRecord('subscriptions', {id: waiting_download['sub_id']}));
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if (sub_missing) {
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handleDownloadError(waiting_download, `Download failed as subscription with id '${waiting_download['sub_id']}' is missing!`, 'sub_id_missing');
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continue;
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}
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}
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// move to next step
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running_downloads_count++;
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if (waiting_download['step_index'] === 0) {
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collectInfo(waiting_download['uid']);
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} else if (waiting_download['step_index'] === 1) {
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downloadQueuedFile(waiting_download['uid']);
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}
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}
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}
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}
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async function collectInfo(download_uid) {
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const download = await db_api.getRecord('download_queue', {uid: download_uid});
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if (download['paused']) {
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return;
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}
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logger.verbose(`Collecting info for download ${download_uid}`);
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await db_api.updateRecord('download_queue', {uid: download_uid}, {step_index: 1, finished_step: false, running: true});
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const url = download['url'];
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const type = download['type'];
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const options = download['options'];
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if (download['user_uid'] && !options.customFileFolderPath) {
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let usersFileFolder = config_api.getConfigItem('ytdl_users_base_path');
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const user_path = path.join(usersFileFolder, download['user_uid'], type);
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options.customFileFolderPath = user_path + path.sep;
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}
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let args = await exports.generateArgs(url, type, options, download['user_uid']);
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// get video info prior to download
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let info = download['prefetched_info'] ? download['prefetched_info'] : await exports.getVideoInfoByURL(url, args, download_uid);
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if (!info) {
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// info failed, error presumably already recorded
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return;
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}
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// in subscriptions we don't care if archive mode is enabled, but we already removed archived videos from subs by this point
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const useYoutubeDLArchive = config_api.getConfigItem('ytdl_use_youtubedl_archive');
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if (useYoutubeDLArchive && !options.ignoreArchive) {
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const exists_in_archive = await archive_api.existsInArchive(info['extractor'], info['id'], type, download['user_uid'], download['sub_id']);
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if (exists_in_archive) {
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const error = `File '${info['title']}' already exists in archive! Disable the archive or override to continue downloading.`;
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logger.warn(error);
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if (download_uid) {
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const download = await db_api.getRecord('download_queue', {uid: download_uid});
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await handleDownloadError(download, error, 'exists_in_archive');
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return;
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}
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}
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}
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let category = null;
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// check if it fits into a category. If so, then get info again using new args
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if (!Array.isArray(info) || config_api.getConfigItem('ytdl_allow_playlist_categorization')) category = await categories_api.categorize(info);
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// set custom output if the category has one and re-retrieve info so the download manager has the right file name
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if (category && category['custom_output']) {
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options.customOutput = category['custom_output'];
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options.noRelativePath = true;
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args = await exports.generateArgs(url, type, options, download['user_uid']);
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info = await exports.getVideoInfoByURL(url, args, download_uid);
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}
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const stripped_category = category ? {name: category['name'], uid: category['uid']} : null;
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// setup info required to calculate download progress
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const expected_file_size = utils.getExpectedFileSize(info);
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const files_to_check_for_progress = [];
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// store info in download for future use
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if (Array.isArray(info)) {
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for (let info_obj of info) files_to_check_for_progress.push(utils.removeFileExtension(info_obj['_filename']));
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} else {
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files_to_check_for_progress.push(utils.removeFileExtension(info['_filename']));
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}
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const playlist_title = Array.isArray(info) ? info[0]['playlist_title'] || info[0]['playlist'] : null;
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await db_api.updateRecord('download_queue', {uid: download_uid}, {args: args,
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finished_step: true,
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running: false,
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options: options,
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files_to_check_for_progress: files_to_check_for_progress,
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expected_file_size: expected_file_size,
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title: playlist_title ? playlist_title : info['title'],
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category: stripped_category,
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prefetched_info: null
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});
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}
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async function downloadQueuedFile(download_uid) {
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const download = await db_api.getRecord('download_queue', {uid: download_uid});
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if (download['paused']) {
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return;
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}
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logger.verbose(`Downloading ${download_uid}`);
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return new Promise(async resolve => {
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const audioFolderPath = config_api.getConfigItem('ytdl_audio_folder_path');
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const videoFolderPath = config_api.getConfigItem('ytdl_video_folder_path');
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const usersFolderPath = config_api.getConfigItem('ytdl_users_base_path');
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await db_api.updateRecord('download_queue', {uid: download_uid}, {step_index: 2, finished_step: false, running: true});
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const url = download['url'];
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const type = download['type'];
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const options = download['options'];
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const args = download['args'];
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const category = download['category'];
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let fileFolderPath = type === 'audio' ? audioFolderPath : videoFolderPath;
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if (options.customFileFolderPath) {
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fileFolderPath = options.customFileFolderPath;
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} else if (download['user_uid']) {
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fileFolderPath = path.join(usersFolderPath, download['user_uid'], type);
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}
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fs.ensureDirSync(fileFolderPath);
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const start_time = Date.now();
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const download_checker = setInterval(() => checkDownloadPercent(download['uid']), 1000);
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// download file
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youtubedl.exec(url, args, {maxBuffer: Infinity}, async function(err, output) {
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const file_objs = [];
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let end_time = Date.now();
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let difference = (end_time - start_time)/1000;
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logger.debug(`${type === 'audio' ? 'Audio' : 'Video'} download delay: ${difference} seconds.`);
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clearInterval(download_checker);
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const parsed_output = utils.parseOutputJSON(output, err);
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if (!parsed_output) {
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logger.error(err.stderr);
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await handleDownloadError(download, err.stderr, 'unknown_error');
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resolve(false);
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return;
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} else if (parsed_output) {
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if (parsed_output.length === 0 || parsed_output[0].length === 0) {
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// ERROR!
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const error_message = `No output received for video download, check if it exists in your archive.`;
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await handleDownloadError(download, error_message, 'no_output');
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logger.warn(error_message);
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resolve(false);
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return;
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}
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for (const output_json of parsed_output) {
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if (!output_json) {
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continue;
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}
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// get filepath with no extension
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const filepath_no_extension = utils.removeFileExtension(output_json['_filename']);
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const ext = type === 'audio' ? '.mp3' : '.mp4';
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var full_file_path = filepath_no_extension + ext;
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var file_name = filepath_no_extension.substring(fileFolderPath.length, filepath_no_extension.length);
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if (type === 'video' && url.includes('twitch.tv/videos/') && url.split('twitch.tv/videos/').length > 1
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&& config_api.getConfigItem('ytdl_twitch_auto_download_chat')) {
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let vodId = url.split('twitch.tv/videos/')[1];
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vodId = vodId.split('?')[0];
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twitch_api.downloadTwitchChatByVODID(vodId, file_name, type, download['user_uid']);
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}
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// renames file if necessary due to bug
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if (!fs.existsSync(output_json['_filename']) && fs.existsSync(output_json['_filename'] + '.webm')) {
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try {
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fs.renameSync(output_json['_filename'] + '.webm', output_json['_filename']);
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logger.info('Renamed ' + file_name + '.webm to ' + file_name);
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} catch(e) {
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logger.error(`Failed to rename file ${output_json['_filename']} to its appropriate extension.`);
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}
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}
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if (type === 'audio') {
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let tags = {
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title: output_json['title'],
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artist: output_json['artist'] ? output_json['artist'] : output_json['uploader']
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}
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let success = NodeID3.write(tags, utils.removeFileExtension(output_json['_filename']) + '.mp3');
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if (!success) logger.error('Failed to apply ID3 tag to audio file ' + output_json['_filename']);
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}
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if (config_api.getConfigItem('ytdl_generate_nfo_files')) {
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exports.generateNFOFile(output_json, `${filepath_no_extension}.nfo`);
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}
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if (options.cropFileSettings) {
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await utils.cropFile(full_file_path, options.cropFileSettings.cropFileStart, options.cropFileSettings.cropFileEnd, ext);
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}
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// registers file in DB
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const file_obj = await files_api.registerFileDB(full_file_path, type, download['user_uid'], category, download['sub_id'] ? download['sub_id'] : null, options.cropFileSettings);
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await archive_api.addToArchive(output_json['extractor'], output_json['id'], type, output_json['title'], download['user_uid'], download['sub_id']);
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notifications_api.sendDownloadNotification(file_obj, download['user_uid']);
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file_objs.push(file_obj);
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}
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let container = null;
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if (file_objs.length > 1) {
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// create playlist
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const playlist_name = file_objs.map(file_obj => file_obj.title).join(', ');
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container = await files_api.createPlaylist(playlist_name, file_objs.map(file_obj => file_obj.uid), download['user_uid']);
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} else if (file_objs.length === 1) {
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container = file_objs[0];
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} else {
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const error_message = 'Downloaded file failed to result in metadata object.';
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logger.error(error_message);
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await handleDownloadError(download, error_message, 'no_metadata');
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}
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const file_uids = file_objs.map(file_obj => file_obj.uid);
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await db_api.updateRecord('download_queue', {uid: download_uid}, {finished_step: true, finished: true, running: false, step_index: 3, percent_complete: 100, file_uids: file_uids, container: container});
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resolve();
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}
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});
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});
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}
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// helper functions
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exports.generateArgs = async (url, type, options, user_uid = null, simulated = false) => {
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const default_downloader = utils.getCurrentDownloader() || config_api.getConfigItem('ytdl_default_downloader');
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if (!simulated && (default_downloader === 'youtube-dl' || default_downloader === 'youtube-dlc')) {
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logger.warn('It is recommended you use yt-dlp! To prevent failed downloads, change the downloader in your settings menu to yt-dlp and restart your instance.')
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}
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const audioFolderPath = config_api.getConfigItem('ytdl_audio_folder_path');
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const videoFolderPath = config_api.getConfigItem('ytdl_video_folder_path');
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const usersFolderPath = config_api.getConfigItem('ytdl_users_base_path');
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const videopath = config_api.getConfigItem('ytdl_default_file_output') ? config_api.getConfigItem('ytdl_default_file_output') : '%(title)s';
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const globalArgs = config_api.getConfigItem('ytdl_custom_args');
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const useCookies = config_api.getConfigItem('ytdl_use_cookies');
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const is_audio = type === 'audio';
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let fileFolderPath = type === 'audio' ? audioFolderPath : videoFolderPath; // TODO: fix
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if (options.customFileFolderPath) {
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fileFolderPath = options.customFileFolderPath;
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} else if (user_uid) {
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fileFolderPath = path.join(usersFolderPath, user_uid, fileFolderPath);
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}
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if (options.customFileFolderPath) fileFolderPath = options.customFileFolderPath;
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const customArgs = options.customArgs;
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let customOutput = options.customOutput;
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const customQualityConfiguration = options.customQualityConfiguration;
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// video-specific args
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const selectedHeight = options.selectedHeight;
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const maxHeight = options.maxHeight;
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const heightParam = selectedHeight || maxHeight;
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// audio-specific args
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const maxBitrate = options.maxBitrate;
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const youtubeUsername = options.youtubeUsername;
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|
const youtubePassword = options.youtubePassword;
|
|
|
|
let downloadConfig = null;
|
|
let qualityPath = (is_audio && !options.skip_audio_args) ? ['-f', 'bestaudio'] : ['-f', 'bestvideo+bestaudio', '--merge-output-format', 'mp4'];
|
|
const is_youtube = url.includes('youtu');
|
|
if (!is_audio && !is_youtube) {
|
|
// tiktok videos fail when using the default format
|
|
qualityPath = null;
|
|
}
|
|
|
|
if (customArgs) {
|
|
downloadConfig = customArgs.split(',,');
|
|
} else {
|
|
if (customQualityConfiguration) {
|
|
qualityPath = ['-f', customQualityConfiguration, '--merge-output-format', 'mp4'];
|
|
} else if (heightParam && heightParam !== '' && !is_audio) {
|
|
const heightFilter = (maxHeight && default_downloader === 'yt-dlp') ? ['-S', `res:${heightParam}`] : ['-f', `best[height${maxHeight ? '<' : ''}=${heightParam}]+bestaudio`]
|
|
qualityPath = [...heightFilter, '--merge-output-format', 'mp4'];
|
|
} else if (is_audio) {
|
|
qualityPath = ['--audio-quality', maxBitrate ? maxBitrate : '0']
|
|
}
|
|
|
|
if (customOutput) {
|
|
customOutput = options.noRelativePath ? customOutput : path.join(fileFolderPath, customOutput);
|
|
downloadConfig = ['-o', `${customOutput}.%(ext)s`, '--write-info-json', '--print-json'];
|
|
} else {
|
|
downloadConfig = ['-o', path.join(fileFolderPath, videopath + (is_audio ? '.%(ext)s' : '.mp4')), '--write-info-json', '--print-json'];
|
|
}
|
|
|
|
if (qualityPath) downloadConfig.push(...qualityPath);
|
|
|
|
if (is_audio && !options.skip_audio_args) {
|
|
downloadConfig.push('-x');
|
|
downloadConfig.push('--audio-format', 'mp3');
|
|
}
|
|
|
|
if (youtubeUsername && youtubePassword) {
|
|
downloadConfig.push('--username', youtubeUsername, '--password', youtubePassword);
|
|
}
|
|
|
|
if (useCookies) {
|
|
if (await fs.pathExists(path.join(__dirname, 'appdata', 'cookies.txt'))) {
|
|
downloadConfig.push('--cookies', path.join('appdata', 'cookies.txt'));
|
|
} else {
|
|
logger.warn('Cookies file could not be found. You can either upload one, or disable \'use cookies\' in the Advanced tab in the settings.');
|
|
}
|
|
}
|
|
|
|
const useDefaultDownloadingAgent = config_api.getConfigItem('ytdl_use_default_downloading_agent');
|
|
const customDownloadingAgent = config_api.getConfigItem('ytdl_custom_downloading_agent');
|
|
if (!useDefaultDownloadingAgent && customDownloadingAgent) {
|
|
downloadConfig.splice(0, 0, '--external-downloader', customDownloadingAgent);
|
|
}
|
|
|
|
if (config_api.getConfigItem('ytdl_include_thumbnail')) {
|
|
downloadConfig.push('--write-thumbnail');
|
|
}
|
|
|
|
if (globalArgs && globalArgs !== '') {
|
|
// adds global args
|
|
if (downloadConfig.indexOf('-o') !== -1 && globalArgs.split(',,').indexOf('-o') !== -1) {
|
|
// if global args has an output, replce the original output with that of global args
|
|
const original_output_index = downloadConfig.indexOf('-o');
|
|
downloadConfig.splice(original_output_index, 2);
|
|
}
|
|
downloadConfig = downloadConfig.concat(globalArgs.split(',,'));
|
|
}
|
|
|
|
if (options.additionalArgs && options.additionalArgs !== '') {
|
|
downloadConfig = utils.injectArgs(downloadConfig, options.additionalArgs.split(',,'));
|
|
}
|
|
|
|
const rate_limit = config_api.getConfigItem('ytdl_download_rate_limit');
|
|
if (rate_limit && downloadConfig.indexOf('-r') === -1 && downloadConfig.indexOf('--limit-rate') === -1) {
|
|
downloadConfig.push('-r', rate_limit);
|
|
}
|
|
|
|
if (default_downloader === 'yt-dlp') {
|
|
downloadConfig = utils.filterArgs(downloadConfig, ['--print-json']);
|
|
|
|
// in yt-dlp -j --no-simulate is preferable
|
|
downloadConfig.push('--no-clean-info-json', '-j', '--no-simulate');
|
|
}
|
|
|
|
}
|
|
|
|
// filter out incompatible args
|
|
downloadConfig = filterArgs(downloadConfig, is_audio);
|
|
|
|
if (!simulated) logger.verbose(`${default_downloader} args being used: ${downloadConfig.join(',')}`);
|
|
return downloadConfig;
|
|
}
|
|
|
|
exports.getVideoInfoByURL = async (url, args = [], download_uid = null) => {
|
|
return new Promise(resolve => {
|
|
// remove bad args
|
|
const temp_args = utils.filterArgs(args, ['--no-simulate']);
|
|
const new_args = [...temp_args];
|
|
|
|
const archiveArgIndex = new_args.indexOf('--download-archive');
|
|
if (archiveArgIndex !== -1) {
|
|
new_args.splice(archiveArgIndex, 2);
|
|
}
|
|
|
|
new_args.push('--dump-json');
|
|
|
|
youtubedl.exec(url, new_args, {maxBuffer: Infinity}, async (err, output) => {
|
|
const parsed_output = utils.parseOutputJSON(output, err);
|
|
if (parsed_output) {
|
|
resolve(parsed_output);
|
|
} else {
|
|
let error_message = `Error while retrieving info on video with URL ${url} with the following message: ${err}`;
|
|
if (err.stderr) error_message += `\n\n${err.stderr}`;
|
|
logger.error(error_message);
|
|
if (download_uid) {
|
|
const download = await db_api.getRecord('download_queue', {uid: download_uid});
|
|
await handleDownloadError(download, error_message, 'info_retrieve_failed');
|
|
}
|
|
resolve(null);
|
|
}
|
|
});
|
|
});
|
|
}
|
|
|
|
function filterArgs(args, isAudio) {
|
|
const video_only_args = ['--add-metadata', '--embed-subs', '--xattrs'];
|
|
const audio_only_args = ['-x', '--extract-audio', '--embed-thumbnail'];
|
|
return utils.filterArgs(args, isAudio ? video_only_args : audio_only_args);
|
|
}
|
|
|
|
async function checkDownloadPercent(download_uid) {
|
|
/*
|
|
This is more of an art than a science, we're just selecting files that start with the file name,
|
|
thus capturing the parts being downloaded in files named like so: '<video title>.<format>.<ext>.part'.
|
|
|
|
Any file that starts with <video title> will be counted as part of the "bytes downloaded", which will
|
|
be divided by the "total expected bytes."
|
|
*/
|
|
|
|
const download = await db_api.getRecord('download_queue', {uid: download_uid});
|
|
const files_to_check_for_progress = download['files_to_check_for_progress'];
|
|
const resulting_file_size = download['expected_file_size'];
|
|
|
|
if (!resulting_file_size) return;
|
|
|
|
let sum_size = 0;
|
|
for (let i = 0; i < files_to_check_for_progress.length; i++) {
|
|
const file_to_check_for_progress = files_to_check_for_progress[i];
|
|
const dir = path.dirname(file_to_check_for_progress);
|
|
if (!fs.existsSync(dir)) continue;
|
|
fs.readdir(dir, async (err, files) => {
|
|
for (let j = 0; j < files.length; j++) {
|
|
const file = files[j];
|
|
if (!file.includes(path.basename(file_to_check_for_progress))) continue;
|
|
try {
|
|
const file_stats = fs.statSync(path.join(dir, file));
|
|
if (file_stats && file_stats.size) {
|
|
sum_size += file_stats.size;
|
|
}
|
|
} catch (e) {}
|
|
}
|
|
|
|
const percent_complete = (sum_size/resulting_file_size * 100).toFixed(2);
|
|
await db_api.updateRecord('download_queue', {uid: download_uid}, {percent_complete: percent_complete});
|
|
});
|
|
}
|
|
}
|
|
|
|
exports.generateNFOFile = (info, output_path) => {
|
|
const nfo_obj = {
|
|
episodedetails: {
|
|
title: info['fulltitle'],
|
|
episode: info['playlist_index'] ? info['playlist_index'] : undefined,
|
|
premiered: utils.formatDateString(info['upload_date']),
|
|
plot: `${info['uploader_url']}\n${info['description']}\n${info['playlist_title'] ? info['playlist_title'] : ''}`,
|
|
director: info['artist'] ? info['artist'] : info['uploader']
|
|
}
|
|
};
|
|
const doc = create(nfo_obj);
|
|
const xml = doc.end({ prettyPrint: true });
|
|
fs.writeFileSync(output_path, xml);
|
|
}
|