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			577 lines
		
	
	
		
			20 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			577 lines
		
	
	
		
			20 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| const { Request, Response, NextFunction } = require('express')
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| const Logger = require('../Logger')
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| const SocketAuthority = require('../SocketAuthority')
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| const Database = require('../Database')
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| 
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| /**
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|  * @typedef RequestUserObject
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|  * @property {import('../models/User')} user
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|  *
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|  * @typedef {Request & RequestUserObject} RequestWithUser
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|  *
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|  * @typedef RequestEntityObject
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|  * @property {import('../models/Playlist')} playlist
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|  *
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|  * @typedef {RequestWithUser & RequestEntityObject} PlaylistControllerRequest
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|  */
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| 
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| class PlaylistController {
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|   constructor() {}
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| 
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|   /**
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|    * POST: /api/playlists
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|    * Create playlist
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|    *
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|    * @param {RequestWithUser} req
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|    * @param {Response} res
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|    */
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|   async create(req, res) {
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|     const reqBody = req.body || {}
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| 
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|     // Validation
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|     if (!reqBody.name || !reqBody.libraryId) {
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|       return res.status(400).send('Invalid playlist data')
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|     }
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|     if (reqBody.description && typeof reqBody.description !== 'string') {
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|       return res.status(400).send('Invalid playlist description')
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|     }
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|     const items = reqBody.items || []
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|     const isPodcast = items.some((i) => i.episodeId)
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|     const libraryItemIds = new Set()
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|     for (const item of items) {
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|       if (!item.libraryItemId || typeof item.libraryItemId !== 'string') {
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|         return res.status(400).send('Invalid playlist item')
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|       }
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|       if (isPodcast && (!item.episodeId || typeof item.episodeId !== 'string')) {
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|         return res.status(400).send('Invalid playlist item episodeId')
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|       } else if (!isPodcast && item.episodeId) {
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|         return res.status(400).send('Invalid playlist item episodeId')
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|       }
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|       libraryItemIds.add(item.libraryItemId)
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|     }
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| 
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|     // Load library items
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|     const libraryItems = await Database.libraryItemModel.findAll({
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|       attributes: ['id', 'mediaId', 'mediaType', 'libraryId'],
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|       where: {
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|         id: Array.from(libraryItemIds),
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|         libraryId: reqBody.libraryId,
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|         mediaType: isPodcast ? 'podcast' : 'book'
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|       }
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|     })
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|     if (libraryItems.length !== libraryItemIds.size) {
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|       return res.status(400).send('Invalid playlist data. Invalid items')
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|     }
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| 
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|     // Validate podcast episodes
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|     if (isPodcast) {
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|       const podcastEpisodeIds = items.map((i) => i.episodeId)
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|       const podcastEpisodes = await Database.podcastEpisodeModel.findAll({
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|         attributes: ['id'],
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|         where: {
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|           id: podcastEpisodeIds
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|         }
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|       })
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|       if (podcastEpisodes.length !== podcastEpisodeIds.length) {
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|         return res.status(400).send('Invalid playlist data. Invalid podcast episodes')
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|       }
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|     }
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| 
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|     const transaction = await Database.sequelize.transaction()
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|     try {
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|       // Create playlist
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|       const newPlaylist = await Database.playlistModel.create(
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|         {
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|           libraryId: reqBody.libraryId,
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|           userId: req.user.id,
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|           name: reqBody.name,
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|           description: reqBody.description || null
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|         },
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|         { transaction }
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|       )
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| 
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|       // Create playlistMediaItems
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|       const playlistItemPayloads = []
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|       for (const [index, item] of items.entries()) {
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|         const libraryItem = libraryItems.find((li) => li.id === item.libraryItemId)
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|         playlistItemPayloads.push({
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|           playlistId: newPlaylist.id,
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|           mediaItemId: item.episodeId || libraryItem.mediaId,
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|           mediaItemType: item.episodeId ? 'podcastEpisode' : 'book',
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|           order: index + 1
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|         })
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|       }
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| 
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|       await Database.playlistMediaItemModel.bulkCreate(playlistItemPayloads, { transaction })
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| 
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|       await transaction.commit()
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| 
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|       newPlaylist.playlistMediaItems = await newPlaylist.getMediaItemsExpandedWithLibraryItem()
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| 
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|       const jsonExpanded = newPlaylist.toOldJSONExpanded()
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|       SocketAuthority.clientEmitter(newPlaylist.userId, 'playlist_added', jsonExpanded)
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|       res.json(jsonExpanded)
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|     } catch (error) {
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|       await transaction.rollback()
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|       Logger.error('[PlaylistController] create:', error)
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|       res.status(500).send('Failed to create playlist')
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|     }
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|   }
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| 
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|   /**
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|    * @deprecated - Use /api/libraries/:libraryId/playlists
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|    * This is not used by Abs web client or mobile apps
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|    * TODO: Remove this endpoint or make it the primary
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|    *
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|    * GET: /api/playlists
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|    * Get all playlists for user
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|    *
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|    * @param {RequestWithUser} req
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|    * @param {Response} res
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|    */
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|   async findAllForUser(req, res) {
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|     const playlistsForUser = await Database.playlistModel.getOldPlaylistsForUserAndLibrary(req.user.id)
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|     res.json({
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|       playlists: playlistsForUser
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|     })
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|   }
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| 
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|   /**
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|    * GET: /api/playlists/:id
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|    *
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|    * @param {PlaylistControllerRequest} req
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|    * @param {Response} res
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|    */
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|   async findOne(req, res) {
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|     req.playlist.playlistMediaItems = await req.playlist.getMediaItemsExpandedWithLibraryItem()
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|     res.json(req.playlist.toOldJSONExpanded())
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|   }
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| 
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|   /**
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|    * PATCH: /api/playlists/:id
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|    * Update playlist
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|    *
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|    * Used for updating name and description or reordering items
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|    *
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|    * @param {PlaylistControllerRequest} req
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|    * @param {Response} res
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|    */
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|   async update(req, res) {
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|     // Validation
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|     const reqBody = req.body || {}
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|     if (reqBody.libraryId || reqBody.userId) {
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|       // Could allow support for this if needed with additional validation
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|       return res.status(400).send('Invalid playlist data. Cannot update libraryId or userId')
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|     }
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|     if (reqBody.name && typeof reqBody.name !== 'string') {
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|       return res.status(400).send('Invalid playlist name')
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|     }
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|     if (reqBody.description && typeof reqBody.description !== 'string') {
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|       return res.status(400).send('Invalid playlist description')
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|     }
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|     if (reqBody.items && (!Array.isArray(reqBody.items) || reqBody.items.some((i) => !i.libraryItemId || typeof i.libraryItemId !== 'string' || (i.episodeId && typeof i.episodeId !== 'string')))) {
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|       return res.status(400).send('Invalid playlist items')
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|     }
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| 
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|     const playlistUpdatePayload = {}
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|     if (reqBody.name) playlistUpdatePayload.name = reqBody.name
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|     if (reqBody.description) playlistUpdatePayload.description = reqBody.description
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| 
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|     // Update name and description
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|     let wasUpdated = false
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|     if (Object.keys(playlistUpdatePayload).length) {
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|       req.playlist.set(playlistUpdatePayload)
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|       const changed = req.playlist.changed()
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|       if (changed?.length) {
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|         await req.playlist.save()
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|         Logger.debug(`[PlaylistController] Updated playlist ${req.playlist.id} keys [${changed.join(',')}]`)
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|         wasUpdated = true
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|       }
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|     }
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| 
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|     // If array of items is set then update order of playlist media items
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|     if (reqBody.items?.length) {
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|       const libraryItemIds = Array.from(new Set(reqBody.items.map((i) => i.libraryItemId)))
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|       const libraryItems = await Database.libraryItemModel.findAll({
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|         attributes: ['id', 'mediaId', 'mediaType'],
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|         where: {
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|           id: libraryItemIds
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|         }
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|       })
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|       if (libraryItems.length !== libraryItemIds.length) {
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|         return res.status(400).send('Invalid playlist items. Items not found')
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|       }
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|       /** @type {import('../models/PlaylistMediaItem')[]} */
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|       const existingPlaylistMediaItems = await req.playlist.getPlaylistMediaItems({
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|         order: [['order', 'ASC']]
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|       })
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|       if (existingPlaylistMediaItems.length !== reqBody.items.length) {
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|         return res.status(400).send('Invalid playlist items. Length mismatch')
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|       }
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| 
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|       // Set an array of mediaItemId
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|       const newMediaItemIdOrder = []
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|       for (const item of reqBody.items) {
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|         const libraryItem = libraryItems.find((li) => li.id === item.libraryItemId)
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|         const mediaItemId = item.episodeId || libraryItem.mediaId
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|         newMediaItemIdOrder.push(mediaItemId)
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|       }
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| 
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|       // Sort existing playlist media items into new order
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|       existingPlaylistMediaItems.sort((a, b) => {
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|         const aIndex = newMediaItemIdOrder.findIndex((i) => i === a.mediaItemId)
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|         const bIndex = newMediaItemIdOrder.findIndex((i) => i === b.mediaItemId)
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|         return aIndex - bIndex
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|       })
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| 
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|       // Update order on playlistMediaItem records
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|       for (const [index, playlistMediaItem] of existingPlaylistMediaItems.entries()) {
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|         if (playlistMediaItem.order !== index + 1) {
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|           await playlistMediaItem.update({
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|             order: index + 1
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|           })
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|           wasUpdated = true
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|         }
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|       }
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|     }
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| 
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|     req.playlist.playlistMediaItems = await req.playlist.getMediaItemsExpandedWithLibraryItem()
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| 
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|     const jsonExpanded = req.playlist.toOldJSONExpanded()
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|     if (wasUpdated) {
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|       SocketAuthority.clientEmitter(req.playlist.userId, 'playlist_updated', jsonExpanded)
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|     }
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|     res.json(jsonExpanded)
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|   }
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| 
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|   /**
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|    * DELETE: /api/playlists/:id
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|    * Remove playlist
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|    *
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|    * @param {PlaylistControllerRequest} req
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|    * @param {Response} res
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|    */
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|   async delete(req, res) {
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|     req.playlist.playlistMediaItems = await req.playlist.getMediaItemsExpandedWithLibraryItem()
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|     const jsonExpanded = req.playlist.toOldJSONExpanded()
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| 
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|     await req.playlist.destroy()
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|     SocketAuthority.clientEmitter(jsonExpanded.userId, 'playlist_removed', jsonExpanded)
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|     res.sendStatus(200)
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|   }
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| 
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|   /**
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|    * POST: /api/playlists/:id/item
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|    * Add item to playlist
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|    *
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|    * This is not used by Abs web client or mobile apps. Only the batch endpoints are used.
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|    *
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|    * @param {PlaylistControllerRequest} req
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|    * @param {Response} res
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|    */
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|   async addItem(req, res) {
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|     const itemToAdd = req.body || {}
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| 
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|     if (!itemToAdd.libraryItemId) {
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|       return res.status(400).send('Request body has no libraryItemId')
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|     }
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| 
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|     const libraryItem = await Database.libraryItemModel.getExpandedById(itemToAdd.libraryItemId)
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|     if (!libraryItem) {
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|       return res.status(400).send('Library item not found')
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|     }
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|     if (libraryItem.libraryId !== req.playlist.libraryId) {
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|       return res.status(400).send('Library item in different library')
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|     }
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|     if ((itemToAdd.episodeId && !libraryItem.isPodcast) || (libraryItem.isPodcast && !itemToAdd.episodeId)) {
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|       return res.status(400).send('Invalid item to add for this library type')
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|     }
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|     if (itemToAdd.episodeId && !libraryItem.media.podcastEpisodes.some((pe) => pe.id === itemToAdd.episodeId)) {
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|       return res.status(400).send('Episode not found in library item')
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|     }
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| 
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|     req.playlist.playlistMediaItems = await req.playlist.getMediaItemsExpandedWithLibraryItem()
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| 
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|     if (req.playlist.checkHasMediaItem(itemToAdd.libraryItemId, itemToAdd.episodeId)) {
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|       return res.status(400).send('Item already in playlist')
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|     }
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| 
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|     const jsonExpanded = req.playlist.toOldJSONExpanded()
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| 
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|     const playlistMediaItem = {
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|       playlistId: req.playlist.id,
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|       mediaItemId: itemToAdd.episodeId || libraryItem.media.id,
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|       mediaItemType: itemToAdd.episodeId ? 'podcastEpisode' : 'book',
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|       order: req.playlist.playlistMediaItems.length + 1
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|     }
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|     await Database.playlistMediaItemModel.create(playlistMediaItem)
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| 
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|     // Add the new item to to the old json expanded to prevent having to fully reload the playlist media items
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|     if (itemToAdd.episodeId) {
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|       const episode = libraryItem.media.podcastEpisodes.find((ep) => ep.id === itemToAdd.episodeId)
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|       jsonExpanded.items.push({
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|         episodeId: itemToAdd.episodeId,
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|         episode: episode.toOldJSONExpanded(libraryItem.id),
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|         libraryItemId: libraryItem.id,
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|         libraryItem: libraryItem.toOldJSONMinified()
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|       })
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|     } else {
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|       jsonExpanded.items.push({
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|         libraryItemId: libraryItem.id,
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|         libraryItem: libraryItem.toOldJSONExpanded()
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|       })
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|     }
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| 
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|     SocketAuthority.clientEmitter(jsonExpanded.userId, 'playlist_updated', jsonExpanded)
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|     res.json(jsonExpanded)
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|   }
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| 
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|   /**
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|    * DELETE: /api/playlists/:id/item/:libraryItemId/:episodeId?
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|    * Remove item from playlist
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|    *
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|    * @param {PlaylistControllerRequest} req
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|    * @param {Response} res
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|    */
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|   async removeItem(req, res) {
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|     req.playlist.playlistMediaItems = await req.playlist.getMediaItemsExpandedWithLibraryItem()
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| 
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|     let playlistMediaItem = null
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|     if (req.params.episodeId) {
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|       playlistMediaItem = req.playlist.playlistMediaItems.find((pmi) => pmi.mediaItemId === req.params.episodeId)
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|     } else {
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|       playlistMediaItem = req.playlist.playlistMediaItems.find((pmi) => pmi.mediaItem.libraryItem?.id === req.params.libraryItemId)
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|     }
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|     if (!playlistMediaItem) {
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|       return res.status(404).send('Media item not found in playlist')
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|     }
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| 
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|     // Remove record
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|     await playlistMediaItem.destroy()
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|     req.playlist.playlistMediaItems = req.playlist.playlistMediaItems.filter((pmi) => pmi.id !== playlistMediaItem.id)
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| 
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|     // Update playlist media items order
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|     for (const [index, mediaItem] of req.playlist.playlistMediaItems.entries()) {
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|       if (mediaItem.order !== index + 1) {
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|         await mediaItem.update({
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|           order: index + 1
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|         })
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|       }
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|     }
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| 
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|     const jsonExpanded = req.playlist.toOldJSONExpanded()
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| 
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|     // Playlist is removed when there are no items
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|     if (!jsonExpanded.items.length) {
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|       Logger.info(`[PlaylistController] Playlist "${jsonExpanded.name}" has no more items - removing it`)
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|       await req.playlist.destroy()
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|       SocketAuthority.clientEmitter(jsonExpanded.userId, 'playlist_removed', jsonExpanded)
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|     } else {
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|       SocketAuthority.clientEmitter(jsonExpanded.userId, 'playlist_updated', jsonExpanded)
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|     }
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| 
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|     res.json(jsonExpanded)
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|   }
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| 
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|   /**
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|    * POST: /api/playlists/:id/batch/add
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|    * Batch add playlist items
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|    *
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|    * @param {PlaylistControllerRequest} req
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|    * @param {Response} res
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|    */
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|   async addBatch(req, res) {
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|     if (!req.body.items?.length || !Array.isArray(req.body.items) || req.body.items.some((i) => !i?.libraryItemId || typeof i.libraryItemId !== 'string' || (i.episodeId && typeof i.episodeId !== 'string'))) {
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|       return res.status(400).send('Invalid request body items')
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|     }
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| 
 | |
|     // Find all library items
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|     const libraryItemIds = new Set(req.body.items.map((i) => i.libraryItemId).filter((i) => i))
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| 
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|     const libraryItems = await Database.libraryItemModel.findAllExpandedWhere({ id: Array.from(libraryItemIds) })
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|     if (libraryItems.length !== libraryItemIds.size) {
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|       return res.status(400).send('Invalid request body items')
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|     }
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| 
 | |
|     req.playlist.playlistMediaItems = await req.playlist.getMediaItemsExpandedWithLibraryItem()
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| 
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|     const mediaItemsToAdd = []
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|     const jsonExpanded = req.playlist.toOldJSONExpanded()
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| 
 | |
|     // Setup array of playlistMediaItem records to add
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|     let order = req.playlist.playlistMediaItems.length + 1
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|     for (const item of req.body.items) {
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|       const libraryItem = libraryItems.find((li) => li.id === item.libraryItemId)
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| 
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|       const mediaItemId = item.episodeId || libraryItem.media.id
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|       if (req.playlist.playlistMediaItems.some((pmi) => pmi.mediaItemId === mediaItemId)) {
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|         // Already exists in playlist
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|         continue
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|       } else {
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|         mediaItemsToAdd.push({
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|           playlistId: req.playlist.id,
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|           mediaItemId,
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|           mediaItemType: item.episodeId ? 'podcastEpisode' : 'book',
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|           order: order++
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|         })
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| 
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|         // Add the new item to to the old json expanded to prevent having to fully reload the playlist media items
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|         if (item.episodeId) {
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|           const episode = libraryItem.media.podcastEpisodes.find((ep) => ep.id === item.episodeId)
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|           jsonExpanded.items.push({
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|             episodeId: item.episodeId,
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|             episode: episode.toOldJSONExpanded(libraryItem.id),
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|             libraryItemId: libraryItem.id,
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|             libraryItem: libraryItem.toOldJSONMinified()
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|           })
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|         } else {
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|           jsonExpanded.items.push({
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|             libraryItemId: libraryItem.id,
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|             libraryItem: libraryItem.toOldJSONExpanded()
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|           })
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|         }
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|       }
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|     }
 | |
| 
 | |
|     if (mediaItemsToAdd.length) {
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|       await Database.playlistMediaItemModel.bulkCreate(mediaItemsToAdd)
 | |
| 
 | |
|       SocketAuthority.clientEmitter(req.playlist.userId, 'playlist_updated', jsonExpanded)
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|     }
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| 
 | |
|     res.json(jsonExpanded)
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|   }
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| 
 | |
|   /**
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|    * POST: /api/playlists/:id/batch/remove
 | |
|    * Batch remove playlist items
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|    *
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|    * @param {PlaylistControllerRequest} req
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|    * @param {Response} res
 | |
|    */
 | |
|   async removeBatch(req, res) {
 | |
|     if (!req.body.items?.length || !Array.isArray(req.body.items) || req.body.items.some((i) => !i?.libraryItemId || typeof i.libraryItemId !== 'string' || (i.episodeId && typeof i.episodeId !== 'string'))) {
 | |
|       return res.status(400).send('Invalid request body items')
 | |
|     }
 | |
| 
 | |
|     req.playlist.playlistMediaItems = await req.playlist.getMediaItemsExpandedWithLibraryItem()
 | |
| 
 | |
|     // Remove playlist media items
 | |
|     let hasUpdated = false
 | |
|     for (const item of req.body.items) {
 | |
|       let playlistMediaItem = null
 | |
|       if (item.episodeId) {
 | |
|         playlistMediaItem = req.playlist.playlistMediaItems.find((pmi) => pmi.mediaItemId === item.episodeId)
 | |
|       } else {
 | |
|         playlistMediaItem = req.playlist.playlistMediaItems.find((pmi) => pmi.mediaItem.libraryItem?.id === item.libraryItemId)
 | |
|       }
 | |
|       if (!playlistMediaItem) {
 | |
|         Logger.warn(`[PlaylistController] Playlist item not found in playlist ${req.playlist.id}`, item)
 | |
|         continue
 | |
|       }
 | |
| 
 | |
|       await playlistMediaItem.destroy()
 | |
|       req.playlist.playlistMediaItems = req.playlist.playlistMediaItems.filter((pmi) => pmi.id !== playlistMediaItem.id)
 | |
| 
 | |
|       hasUpdated = true
 | |
|     }
 | |
| 
 | |
|     const jsonExpanded = req.playlist.toOldJSONExpanded()
 | |
|     if (hasUpdated) {
 | |
|       // Playlist is removed when there are no items
 | |
|       if (!req.playlist.playlistMediaItems.length) {
 | |
|         Logger.info(`[PlaylistController] Playlist "${req.playlist.name}" has no more items - removing it`)
 | |
|         await req.playlist.destroy()
 | |
|         SocketAuthority.clientEmitter(jsonExpanded.userId, 'playlist_removed', jsonExpanded)
 | |
|       } else {
 | |
|         SocketAuthority.clientEmitter(jsonExpanded.userId, 'playlist_updated', jsonExpanded)
 | |
|       }
 | |
|     }
 | |
|     res.json(jsonExpanded)
 | |
|   }
 | |
| 
 | |
|   /**
 | |
|    * POST: /api/playlists/collection/:collectionId
 | |
|    * Create a playlist from a collection
 | |
|    *
 | |
|    * @param {RequestWithUser} req
 | |
|    * @param {Response} res
 | |
|    */
 | |
|   async createFromCollection(req, res) {
 | |
|     const collection = await Database.collectionModel.findByPk(req.params.collectionId)
 | |
|     if (!collection) {
 | |
|       return res.status(404).send('Collection not found')
 | |
|     }
 | |
|     // Expand collection to get library items
 | |
|     const collectionExpanded = await collection.getOldJsonExpanded(req.user)
 | |
|     if (!collectionExpanded) {
 | |
|       // This can happen if the user has no access to all items in collection
 | |
|       return res.status(404).send('Collection not found')
 | |
|     }
 | |
| 
 | |
|     // Playlists cannot be empty
 | |
|     if (!collectionExpanded.books.length) {
 | |
|       return res.status(400).send('Collection has no books')
 | |
|     }
 | |
| 
 | |
|     const transaction = await Database.sequelize.transaction()
 | |
|     try {
 | |
|       const playlist = await Database.playlistModel.create(
 | |
|         {
 | |
|           userId: req.user.id,
 | |
|           libraryId: collection.libraryId,
 | |
|           name: collection.name,
 | |
|           description: collection.description || null
 | |
|         },
 | |
|         { transaction }
 | |
|       )
 | |
| 
 | |
|       const mediaItemsToAdd = []
 | |
|       for (const [index, libraryItem] of collectionExpanded.books.entries()) {
 | |
|         mediaItemsToAdd.push({
 | |
|           playlistId: playlist.id,
 | |
|           mediaItemId: libraryItem.media.id,
 | |
|           mediaItemType: 'book',
 | |
|           order: index + 1
 | |
|         })
 | |
|       }
 | |
|       await Database.playlistMediaItemModel.bulkCreate(mediaItemsToAdd, { transaction })
 | |
| 
 | |
|       await transaction.commit()
 | |
| 
 | |
|       playlist.playlistMediaItems = await playlist.getMediaItemsExpandedWithLibraryItem()
 | |
| 
 | |
|       const jsonExpanded = playlist.toOldJSONExpanded()
 | |
|       SocketAuthority.clientEmitter(playlist.userId, 'playlist_added', jsonExpanded)
 | |
|       res.json(jsonExpanded)
 | |
|     } catch (error) {
 | |
|       await transaction.rollback()
 | |
|       Logger.error('[PlaylistController] createFromCollection:', error)
 | |
|       res.status(500).send('Failed to create playlist')
 | |
|     }
 | |
|   }
 | |
| 
 | |
|   /**
 | |
|    *
 | |
|    * @param {RequestWithUser} req
 | |
|    * @param {Response} res
 | |
|    * @param {NextFunction} next
 | |
|    */
 | |
|   async middleware(req, res, next) {
 | |
|     if (req.params.id) {
 | |
|       const playlist = await Database.playlistModel.findByPk(req.params.id)
 | |
|       if (!playlist) {
 | |
|         return res.status(404).send('Playlist not found')
 | |
|       }
 | |
|       if (playlist.userId !== req.user.id) {
 | |
|         Logger.warn(`[PlaylistController] Playlist ${req.params.id} requested by user ${req.user.id} that is not the owner`)
 | |
|         return res.sendStatus(403)
 | |
|       }
 | |
|       req.playlist = playlist
 | |
|     }
 | |
| 
 | |
|     next()
 | |
|   }
 | |
| }
 | |
| module.exports = new PlaylistController()
 |