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				https://github.com/advplyr/audiobookshelf.git
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			402 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			402 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| const { Request, Response } = require('express')
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| const Path = require('path')
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| 
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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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| const fs = require('../libs/fsExtra')
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| 
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| class RssFeedManager {
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|   constructor() {}
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| 
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|   /**
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|    * Remove invalid feeds (invalid if the entity does not exist)
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|    */
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|   async init() {
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|     const feeds = await Database.feedModel.findAll({
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|       attributes: ['id', 'entityId', 'entityType', 'title'],
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|       include: [
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|         {
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|           model: Database.libraryItemModel,
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|           attributes: ['id']
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|         },
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|         {
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|           model: Database.collectionModel,
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|           attributes: ['id']
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|         },
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|         {
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|           model: Database.seriesModel,
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|           attributes: ['id']
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|         }
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|       ]
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|     })
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| 
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|     const feedIdsToRemove = []
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|     for (const feed of feeds) {
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|       if (!feed.entity) {
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|         Logger.error(`[RssFeedManager] Removing feed "${feed.title}". Entity not found`)
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|         feedIdsToRemove.push(feed.id)
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|       }
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|     }
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| 
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|     if (feedIdsToRemove.length) {
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|       Logger.info(`[RssFeedManager] Removing ${feedIdsToRemove.length} invalid feeds`)
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|       await Database.feedModel.destroy({
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|         where: {
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|           id: feedIdsToRemove
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|         }
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|       })
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|     }
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|   }
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| 
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|   /**
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|    * Find open feed for an entity (e.g. collection id, playlist id, library item id)
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|    * @param {string} entityId
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|    * @returns {Promise<import('../models/Feed')>}
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|    */
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|   findFeedForEntityId(entityId) {
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|     return Database.feedModel.findOne({
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|       where: {
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|         entityId
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|       }
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|     })
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|   }
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| 
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|   /**
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|    *
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|    * @param {string} slug
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|    * @returns {Promise<boolean>}
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|    */
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|   checkExistsBySlug(slug) {
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|     return Database.feedModel
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|       .count({
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|         where: {
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|           slug
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|         }
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|       })
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|       .then((count) => count > 0)
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|   }
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| 
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|   /**
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|    * Feed requires update if the entity (or child entities) has been updated since the feed was last updated
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|    *
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|    * @param {import('../models/Feed')} feed
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|    * @returns {Promise<boolean>}
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|    */
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|   async checkFeedRequiresUpdate(feed) {
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|     if (feed.entityType === 'libraryItem') {
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|       feed.entity = await feed.getEntity({
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|         attributes: ['id', 'updatedAt', 'mediaId', 'mediaType']
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|       })
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| 
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|       let newEntityUpdatedAt = feed.entity.updatedAt
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| 
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|       if (feed.entity.mediaType === 'podcast') {
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|         const mostRecentPodcastEpisode = await Database.podcastEpisodeModel.findOne({
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|           where: {
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|             podcastId: feed.entity.mediaId
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|           },
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|           attributes: ['id', 'updatedAt'],
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|           order: [['updatedAt', 'DESC']]
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|         })
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| 
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|         if (mostRecentPodcastEpisode && mostRecentPodcastEpisode.updatedAt > newEntityUpdatedAt) {
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|           newEntityUpdatedAt = mostRecentPodcastEpisode.updatedAt
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|         }
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|       } else {
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|         const book = await Database.bookModel.findOne({
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|           where: {
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|             id: feed.entity.mediaId
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|           },
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|           attributes: ['id', 'updatedAt']
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|         })
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|         if (book && book.updatedAt > newEntityUpdatedAt) {
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|           newEntityUpdatedAt = book.updatedAt
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|         }
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|       }
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| 
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|       return newEntityUpdatedAt > feed.entityUpdatedAt
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|     } else if (feed.entityType === 'collection' || feed.entityType === 'series') {
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|       feed.entity = await feed.getEntity({
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|         attributes: ['id', 'updatedAt'],
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|         include: {
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|           model: Database.bookModel,
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|           attributes: ['id', 'audioFiles', 'updatedAt'],
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|           through: {
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|             attributes: []
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|           },
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|           include: {
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|             model: Database.libraryItemModel,
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|             attributes: ['id', 'updatedAt']
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|           }
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|         }
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|       })
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| 
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|       const totalBookTracks = feed.entity.books.reduce((total, book) => total + book.includedAudioFiles.length, 0)
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|       if (feed.feedEpisodes.length !== totalBookTracks) {
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|         return true
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|       }
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| 
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|       let newEntityUpdatedAt = feed.entity.updatedAt
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| 
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|       const mostRecentItemUpdatedAt = feed.entity.books.reduce((mostRecent, book) => {
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|         let updatedAt = book.libraryItem.updatedAt > book.updatedAt ? book.libraryItem.updatedAt : book.updatedAt
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|         return updatedAt > mostRecent ? updatedAt : mostRecent
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|       }, 0)
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| 
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|       if (mostRecentItemUpdatedAt > newEntityUpdatedAt) {
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|         newEntityUpdatedAt = mostRecentItemUpdatedAt
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|       }
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| 
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|       return newEntityUpdatedAt > feed.entityUpdatedAt
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|     } else {
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|       throw new Error('Invalid feed entity type')
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|     }
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|   }
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| 
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|   /**
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|    * GET: /feed/:slug
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|    *
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|    * @param {Request} req
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|    * @param {Response} res
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|    */
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|   async getFeed(req, res) {
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|     let feed = await Database.feedModel.findOne({
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|       where: {
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|         slug: req.params.slug
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|       },
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|       include: {
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|         model: Database.feedEpisodeModel
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|       }
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|     })
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|     if (!feed) {
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|       Logger.warn(`[RssFeedManager] Feed not found ${req.params.slug}`)
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|       res.sendStatus(404)
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|       return
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|     }
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| 
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|     const feedRequiresUpdate = await this.checkFeedRequiresUpdate(feed)
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|     if (feedRequiresUpdate) {
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|       Logger.info(`[RssFeedManager] Feed "${feed.title}" requires update - updating feed`)
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|       feed = await feed.updateFeedForEntity()
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|     }
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| 
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|     const xml = feed.buildXml(req.originalHostPrefix)
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|     res.set('Content-Type', 'text/xml')
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|     res.send(xml)
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|   }
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| 
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|   /**
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|    * GET: /feed/:slug/item/:episodeId/*
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|    *
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|    * @param {Request} req
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|    * @param {Response} res
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|    */
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|   async getFeedItem(req, res) {
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|     const feed = await Database.feedModel.findOne({
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|       where: {
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|         slug: req.params.slug
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|       },
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|       attributes: ['id', 'slug'],
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|       include: {
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|         model: Database.feedEpisodeModel,
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|         attributes: ['id', 'filePath']
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|       }
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|     })
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| 
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|     if (!feed) {
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|       Logger.debug(`[RssFeedManager] Feed not found ${req.params.slug}`)
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|       res.sendStatus(404)
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|       return
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|     }
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|     const episodePath = feed.getEpisodePath(req.params.episodeId)
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|     if (!episodePath) {
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|       Logger.error(`[RssFeedManager] Feed episode not found ${req.params.episodeId}`)
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|       res.sendStatus(404)
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|       return
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|     }
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|     res.sendFile(episodePath)
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|   }
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| 
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|   /**
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|    * GET: /feed/:slug/cover*
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|    *
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|    * @param {Request} req
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|    * @param {Response} res
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|    */
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|   async getFeedCover(req, res) {
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|     const feed = await Database.feedModel.findOne({
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|       where: {
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|         slug: req.params.slug
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|       },
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|       attributes: ['coverPath']
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|     })
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|     if (!feed) {
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|       Logger.debug(`[RssFeedManager] Feed not found ${req.params.slug}`)
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|       res.sendStatus(404)
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|       return
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|     }
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| 
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|     if (!feed.coverPath) {
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|       res.sendStatus(404)
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|       return
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|     }
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| 
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|     const extname = Path.extname(feed.coverPath).toLowerCase().slice(1)
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|     res.type(`image/${extname}`)
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|     const readStream = fs.createReadStream(feed.coverPath)
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| 
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|     readStream.on('error', (error) => {
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|       Logger.error(`[RssFeedManager] Error streaming cover image: ${error.message}`)
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|       // Only send error if headers haven't been sent yet
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|       if (!res.headersSent) {
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|         res.sendStatus(404)
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|       }
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|     })
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| 
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|     readStream.pipe(res)
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|   }
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| 
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|   /**
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|    *
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|    * @param {*} options
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|    * @returns {import('../models/Feed').FeedOptions}
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|    */
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|   getFeedOptionsFromReqOptions(options) {
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|     const metadataDetails = options.metadataDetails || {}
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| 
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|     if (metadataDetails.preventIndexing !== false) {
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|       metadataDetails.preventIndexing = true
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|     }
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| 
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|     return {
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|       preventIndexing: metadataDetails.preventIndexing,
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|       ownerName: metadataDetails.ownerName && typeof metadataDetails.ownerName === 'string' ? metadataDetails.ownerName : null,
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|       ownerEmail: metadataDetails.ownerEmail && typeof metadataDetails.ownerEmail === 'string' ? metadataDetails.ownerEmail : null
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|     }
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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('../models/LibraryItem')} libraryItem
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|    * @param {*} options
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|    * @returns {Promise<import('../models/Feed').FeedExpanded>}
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|    */
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|   async openFeedForItem(userId, libraryItem, options) {
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|     const serverAddress = options.serverAddress
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|     const slug = options.slug
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|     const feedOptions = this.getFeedOptionsFromReqOptions(options)
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| 
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|     Logger.info(`[RssFeedManager] Creating RSS feed for item ${libraryItem.id} "${libraryItem.media.title}"`)
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|     const feedExpanded = await Database.feedModel.createFeedForLibraryItem(userId, libraryItem, slug, serverAddress, feedOptions)
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|     if (feedExpanded) {
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|       Logger.info(`[RssFeedManager] Opened RSS feed "${feedExpanded.feedURL}"`)
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|       SocketAuthority.emitter('rss_feed_open', feedExpanded.toOldJSONMinified())
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|     }
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|     return feedExpanded
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|   }
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| 
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|   /**
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|    *
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|    * @param {string} userId
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|    * @param {import('../models/Collection')} collectionExpanded
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|    * @param {*} options
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|    * @returns {Promise<import('../models/Feed').FeedExpanded>}
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|    */
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|   async openFeedForCollection(userId, collectionExpanded, options) {
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|     const serverAddress = options.serverAddress
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|     const slug = options.slug
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|     const feedOptions = this.getFeedOptionsFromReqOptions(options)
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| 
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|     Logger.info(`[RssFeedManager] Creating RSS feed for collection "${collectionExpanded.name}"`)
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|     const feedExpanded = await Database.feedModel.createFeedForCollection(userId, collectionExpanded, slug, serverAddress, feedOptions)
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|     if (feedExpanded) {
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|       Logger.info(`[RssFeedManager] Opened RSS feed "${feedExpanded.feedURL}"`)
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|       SocketAuthority.emitter('rss_feed_open', feedExpanded.toOldJSONMinified())
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|     }
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|     return feedExpanded
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|   }
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| 
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|   /**
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|    *
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|    * @param {string} userId
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|    * @param {import('../models/Series')} seriesExpanded
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|    * @param {*} options
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|    * @returns {Promise<import('../models/Feed').FeedExpanded>}
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|    */
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|   async openFeedForSeries(userId, seriesExpanded, options) {
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|     const serverAddress = options.serverAddress
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|     const slug = options.slug
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|     const feedOptions = this.getFeedOptionsFromReqOptions(options)
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| 
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|     Logger.info(`[RssFeedManager] Creating RSS feed for series "${seriesExpanded.name}"`)
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|     const feedExpanded = await Database.feedModel.createFeedForSeries(userId, seriesExpanded, slug, serverAddress, feedOptions)
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|     if (feedExpanded) {
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|       Logger.info(`[RssFeedManager] Opened RSS feed "${feedExpanded.feedURL}"`)
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|       SocketAuthority.emitter('rss_feed_open', feedExpanded.toOldJSONMinified())
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|     }
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|     return feedExpanded
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|   }
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| 
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|   /**
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|    * Close Feed and emit Socket event
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|    *
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|    * @param {import('../models/Feed')} feed
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|    * @returns {Promise<boolean>} - true if feed was closed
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|    */
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|   async handleCloseFeed(feed) {
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|     if (!feed) return false
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|     const wasRemoved = await Database.feedModel.removeById(feed.id)
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|     SocketAuthority.emitter('rss_feed_closed', feed.toOldJSONMinified())
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|     Logger.info(`[RssFeedManager] Closed RSS feed "${feed.feedURL}"`)
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|     return wasRemoved
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|   }
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| 
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|   /**
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|    *
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|    * @param {string} entityId
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|    * @returns {Promise<boolean>} - true if feed was closed
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|    */
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|   async closeFeedForEntityId(entityId) {
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|     const feed = await Database.feedModel.findOne({
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|       where: {
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|         entityId
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|       }
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|     })
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|     if (!feed) {
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|       return false
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|     }
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|     return this.handleCloseFeed(feed)
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|   }
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| 
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|   /**
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|    *
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|    * @param {string[]} entityIds
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|    */
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|   async closeFeedsForEntityIds(entityIds) {
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|     const feeds = await Database.feedModel.findAll({
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|       where: {
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|         entityId: entityIds
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|       }
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|     })
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|     for (const feed of feeds) {
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|       await this.handleCloseFeed(feed)
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|     }
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|   }
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| 
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|   /**
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|    *
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|    * @returns {Promise<import('../models/Feed').FeedExpanded[]>}
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|    */
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|   getFeeds() {
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|     return Database.feedModel.findAll({
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|       include: {
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|         model: Database.feedEpisodeModel
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|       }
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|     })
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|   }
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| }
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| module.exports = new RssFeedManager()
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