285 lines
10 KiB
JavaScript
285 lines
10 KiB
JavaScript
const Path = require('path')
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const SocketAuthority = require('../SocketAuthority')
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const Logger = require('../Logger')
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const fs = require('../libs/fsExtra')
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const ffmpegHelpers = require('../utils/ffmpegHelpers')
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const TaskManager = require('./TaskManager')
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const Task = require('../objects/Task')
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const fileUtils = require('../utils/fileUtils')
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/**
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* @typedef UpdateMetadataOptions
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* @property {boolean} [forceEmbedChapters=false] - Whether to force embed chapters.
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* @property {boolean} [backup=false] - Whether to backup the files.
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*/
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class AudioMetadataMangaer {
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constructor() {
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this.itemsCacheDir = Path.join(global.MetadataPath, 'cache/items')
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this.MAX_CONCURRENT_TASKS = 1
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this.tasksRunning = []
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this.tasksQueued = []
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}
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/**
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* Get queued task data
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* @return {Array}
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*/
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getQueuedTaskData() {
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return this.tasksQueued.map((t) => t.data)
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}
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getIsLibraryItemQueuedOrProcessing(libraryItemId) {
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return this.tasksQueued.some((t) => t.data.libraryItemId === libraryItemId) || this.tasksRunning.some((t) => t.data.libraryItemId === libraryItemId)
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}
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getMetadataObjectForApi(libraryItem) {
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return ffmpegHelpers.getFFMetadataObject(libraryItem, libraryItem.media.includedAudioFiles.length)
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}
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/**
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*
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* @param {string} userId
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* @param {*} libraryItems
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* @param {*} options
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*/
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handleBatchEmbed(userId, libraryItems, options = {}) {
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libraryItems.forEach((li) => {
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this.updateMetadataForItem(userId, li, options)
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})
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}
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/**
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*
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* @param {string} userId
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* @param {import('../objects/LibraryItem')} libraryItem
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* @param {UpdateMetadataOptions} [options={}]
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*/
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async updateMetadataForItem(userId, libraryItem, options = {}) {
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const forceEmbedChapters = !!options.forceEmbedChapters
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const backupFiles = !!options.backup
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const audioFiles = libraryItem.media.includedAudioFiles
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const task = new Task()
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const itemCachePath = Path.join(this.itemsCacheDir, libraryItem.id)
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// Only writing chapters for single file audiobooks
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const chapters = audioFiles.length == 1 || forceEmbedChapters ? libraryItem.media.chapters.map((c) => ({ ...c })) : null
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let mimeType = audioFiles[0].mimeType
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if (audioFiles.some((a) => a.mimeType !== mimeType)) mimeType = null
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// Create task
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const libraryItemDir = libraryItem.isFile ? Path.dirname(libraryItem.path) : libraryItem.path
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const taskData = {
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libraryItemId: libraryItem.id,
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libraryItemDir,
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userId,
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audioFiles: audioFiles.map((af) => ({
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index: af.index,
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ino: af.ino,
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filename: af.metadata.filename,
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path: af.metadata.path,
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cachePath: Path.join(itemCachePath, af.metadata.filename),
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duration: af.duration
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})),
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coverPath: libraryItem.media.coverPath,
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metadataObject: ffmpegHelpers.getFFMetadataObject(libraryItem, audioFiles.length),
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itemCachePath,
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chapters,
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mimeType,
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options: {
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forceEmbedChapters,
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backupFiles
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},
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duration: libraryItem.media.duration
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}
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const taskTitleString = {
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text: 'Embedding Metadata',
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key: 'MessageTaskEmbeddingMetadata'
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}
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const taskDescriptionString = {
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text: `Embedding metadata in audiobook "${libraryItem.media.metadata.title}".`,
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key: 'MessageTaskEmbeddingMetadataDescription',
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subs: [libraryItem.media.metadata.title]
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}
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task.setData('embed-metadata', taskTitleString, taskDescriptionString, false, taskData)
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if (this.tasksRunning.length >= this.MAX_CONCURRENT_TASKS) {
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Logger.info(`[AudioMetadataManager] Queueing embed metadata for audiobook "${libraryItem.media.metadata.title}"`)
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SocketAuthority.adminEmitter('metadata_embed_queue_update', {
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libraryItemId: libraryItem.id,
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queued: true
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})
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this.tasksQueued.push(task)
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} else {
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this.runMetadataEmbed(task)
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}
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}
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/**
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*
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* @param {import('../objects/Task')} task
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*/
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async runMetadataEmbed(task) {
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this.tasksRunning.push(task)
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TaskManager.addTask(task)
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Logger.info(`[AudioMetadataManager] Starting metadata embed task`, task.description)
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// Ensure target directory is writable
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const targetDirWritable = await fileUtils.isWritable(task.data.libraryItemDir)
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Logger.debug(`[AudioMetadataManager] Target directory ${task.data.libraryItemDir} writable: ${targetDirWritable}`)
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if (!targetDirWritable) {
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Logger.error(`[AudioMetadataManager] Target directory is not writable: ${task.data.libraryItemDir}`)
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const taskFailedString = {
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text: 'Target directory is not writable',
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key: 'MessageTaskTargetDirectoryNotWritable'
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}
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task.setFailed(taskFailedString)
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this.handleTaskFinished(task)
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return
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}
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// Ensure target audio files are writable
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for (const af of task.data.audioFiles) {
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try {
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await fs.access(af.path, fs.constants.W_OK)
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} catch (err) {
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Logger.error(`[AudioMetadataManager] Audio file is not writable: ${af.path}`)
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const taskFailedString = {
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text: `Audio file "${Path.basename(af.path)}" is not writable`,
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key: 'MessageTaskAudioFileNotWritable',
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subs: [Path.basename(af.path)]
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}
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task.setFailed(taskFailedString)
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this.handleTaskFinished(task)
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return
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}
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}
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// Ensure item cache dir exists
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let cacheDirCreated = false
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if (!(await fs.pathExists(task.data.itemCachePath))) {
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try {
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await fs.mkdir(task.data.itemCachePath)
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cacheDirCreated = true
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} catch (err) {
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Logger.error(`[AudioMetadataManager] Failed to create cache directory ${task.data.itemCachePath}`, err)
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const taskFailedString = {
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text: 'Failed to create cache directory',
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key: 'MessageTaskFailedToCreateCacheDirectory'
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}
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task.setFailed(taskFailedString)
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this.handleTaskFinished(task)
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return
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}
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}
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// Create ffmetadata file
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const ffmetadataPath = Path.join(task.data.itemCachePath, 'ffmetadata.txt')
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const success = await ffmpegHelpers.writeFFMetadataFile(task.data.metadataObject, task.data.chapters, ffmetadataPath)
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if (!success) {
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Logger.error(`[AudioMetadataManager] Failed to write ffmetadata file for audiobook "${task.data.libraryItemId}"`)
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const taskFailedString = {
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text: 'Failed to write metadata file',
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key: 'MessageTaskFailedToWriteMetadataFile'
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}
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task.setFailed(taskFailedString)
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this.handleTaskFinished(task)
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return
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}
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// Tag audio files
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let cummulativeProgress = 0
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for (const af of task.data.audioFiles) {
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const audioFileRelativeDuration = af.duration / task.data.duration
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SocketAuthority.adminEmitter('track_started', {
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libraryItemId: task.data.libraryItemId,
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ino: af.ino
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})
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// Backup audio file
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if (task.data.options.backupFiles) {
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try {
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const backupFilePath = Path.join(task.data.itemCachePath, af.filename)
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await fs.copy(af.path, backupFilePath)
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Logger.debug(`[AudioMetadataManager] Backed up audio file at "${backupFilePath}"`)
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} catch (err) {
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Logger.error(`[AudioMetadataManager] Failed to backup audio file "${af.path}"`, err)
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const taskFailedString = {
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text: `Failed to backup audio file "${Path.basename(af.path)}"`,
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key: 'MessageTaskFailedToBackupAudioFile',
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subs: [Path.basename(af.path)]
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}
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task.setFailed(taskFailedString)
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this.handleTaskFinished(task)
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return
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}
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}
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try {
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await ffmpegHelpers.addCoverAndMetadataToFile(af.path, task.data.coverPath, ffmetadataPath, af.index, task.data.mimeType, (progress) => {
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SocketAuthority.adminEmitter('task_progress', { libraryItemId: task.data.libraryItemId, progress: cummulativeProgress + progress * audioFileRelativeDuration })
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SocketAuthority.adminEmitter('track_progress', { libraryItemId: task.data.libraryItemId, ino: af.ino, progress })
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})
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Logger.info(`[AudioMetadataManager] Successfully tagged audio file "${af.path}"`)
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} catch (err) {
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Logger.error(`[AudioMetadataManager] Failed to tag audio file "${af.path}"`, err)
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const taskFailedString = {
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text: `Failed to embed metadata in file "${Path.basename(af.path)}"`,
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key: 'MessageTaskFailedToEmbedMetadataInFile',
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subs: [Path.basename(af.path)]
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}
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task.setFailed(taskFailedString)
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this.handleTaskFinished(task)
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return
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}
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SocketAuthority.adminEmitter('track_finished', {
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libraryItemId: task.data.libraryItemId,
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ino: af.ino
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})
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cummulativeProgress += audioFileRelativeDuration * 100
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}
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// Remove temp cache file/folder if not backing up
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if (!task.data.options.backupFiles) {
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// If cache dir was created from this then remove it
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if (cacheDirCreated) {
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await fs.remove(task.data.itemCachePath)
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} else {
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await fs.remove(ffmetadataPath)
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}
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}
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task.setFinished()
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this.handleTaskFinished(task)
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}
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handleTaskFinished(task) {
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TaskManager.taskFinished(task)
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this.tasksRunning = this.tasksRunning.filter((t) => t.id !== task.id)
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if (this.tasksRunning.length < this.MAX_CONCURRENT_TASKS && this.tasksQueued.length) {
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Logger.info(`[AudioMetadataManager] Task finished and dequeueing next task. ${this.tasksQueued} tasks queued.`)
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const nextTask = this.tasksQueued.shift()
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SocketAuthority.emitter('metadata_embed_queue_update', {
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libraryItemId: nextTask.data.libraryItemId,
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queued: false
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})
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this.runMetadataEmbed(nextTask)
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} else if (this.tasksRunning.length > 0) {
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Logger.debug(`[AudioMetadataManager] Task finished but not dequeueing. Currently running ${this.tasksRunning.length} tasks. ${this.tasksQueued.length} tasks queued.`)
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} else {
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Logger.debug(`[AudioMetadataManager] Task finished and no tasks remain in queue`)
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}
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}
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}
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module.exports = AudioMetadataMangaer
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