Fix:Update library item RSS feed if item was updated #939

server/managers/RssFeedManager.js

@@ -30,7 +30,7 @@ class RssFeedManager {
     return Object.values(this.feeds).find(feed => feed.entityId === libraryItemId)
   }
 
-  getFeed(req, res) {
+  async getFeed(req, res) {
     var feed = this.feeds[req.params.id]
     if (!feed) {
       Logger.error(`[RssFeedManager] Feed not found ${req.params.id}`)
@@ -38,6 +38,15 @@ class RssFeedManager {
       return
     }
 
+    if (feed.entityType === 'item') {
+      const libraryItem = this.db.getLibraryItem(feed.entityId)
+      if (libraryItem && (!feed.entityUpdatedAt || libraryItem.updatedAt > feed.entityUpdatedAt)) {
+        Logger.debug(`[RssFeedManager] Updating RSS feed for item ${libraryItem.id} "${libraryItem.media.metadata.title}"`)
+        feed.updateFromItem(libraryItem)
+        await this.db.updateEntity('feed', feed)
+      }
+    }
+
     var xml = feed.buildXml()
     res.set('Content-Type', 'text/xml')
     res.send(xml)

server/objects/Feed.js

@@ -9,6 +9,7 @@ class Feed {
     this.userId = null
     this.entityType = null
     this.entityId = null
+    this.entityUpdatedAt = null
 
     this.coverPath = null
     this.serverAddress = null
@@ -79,6 +80,7 @@ class Feed {
     this.userId = userId
     this.entityType = 'item'
     this.entityId = libraryItem.id
+    this.entityUpdatedAt = libraryItem.updatedAt
     this.coverPath = media.coverPath || null
     this.serverAddress = serverAddress
     this.feedUrl = feedUrl
@@ -111,6 +113,39 @@ class Feed {
     this.updatedAt = Date.now()
   }
 
+  updateFromItem(libraryItem) {
+    const media = libraryItem.media
+    const mediaMetadata = media.metadata
+    const isPodcast = libraryItem.mediaType === 'podcast'
+    const author = isPodcast ? mediaMetadata.author : mediaMetadata.authorName
+
+    this.entityUpdatedAt = libraryItem.updatedAt
+
+    this.meta.title = mediaMetadata.title
+    this.meta.description = mediaMetadata.description
+    this.meta.author = author
+    this.meta.imageUrl = media.coverPath ? `${this.serverAddress}/feed/${this.slug}/cover` : `${this.serverAddress}/Logo.png`
+    this.meta.explicit = !!mediaMetadata.explicit
+
+    this.episodes = []
+    if (isPodcast) { // PODCAST EPISODES
+      media.episodes.forEach((episode) => {
+        var feedEpisode = new FeedEpisode()
+        feedEpisode.setFromPodcastEpisode(libraryItem, this.serverAddress, this.slug, episode, this.meta)
+        this.episodes.push(feedEpisode)
+      })
+    } else { // AUDIOBOOK EPISODES
+      media.tracks.forEach((audioTrack) => {
+        var feedEpisode = new FeedEpisode()
+        feedEpisode.setFromAudiobookTrack(libraryItem, this.serverAddress, this.slug, audioTrack, this.meta)
+        this.episodes.push(feedEpisode)
+      })
+    }
+
+    this.updatedAt = Date.now()
+    this.xml = null
+  }
+
   buildXml() {
     if (this.xml) return this.xml