Merge branch 'advplyr:master' into scan-for-narrator

build/debian/DEBIAN/postinst

@@ -2,49 +2,11 @@
 set -e
 set -o pipefail
 
-FFMPEG_INSTALL_DIR="/usr/lib/audiobookshelf-ffmpeg/"
+ABS_LOG_DIR="/var/log/audiobookshelf"
 
 declare -r init_type='auto'
 declare -ri no_rebuild='0'
 
-add_user() {
-  : "${1:?'User was not defined'}"
-  declare -r user="$1"
-  declare -r uid="$2"
-
-  if [ -z "$uid" ]; then
-    declare -r uid_flags=""
-  else
-    declare -r uid_flags="--uid $uid"
-  fi
-
-  declare -r group="${3:-$user}"
-  declare -r descr="${4:-No description}"
-  declare -r shell="${5:-/bin/false}"
-
-  if ! getent passwd | grep -q "^$user:"; then
-    echo "Creating system user: $user in $group with $descr and shell $shell"
-    useradd $uid_flags --gid $group --no-create-home --system --shell $shell -c "$descr" $user
-  fi
-}
-
-add_group() {
-  : "${1:?'Group was not defined'}"
-  declare -r group="$1"
-  declare -r gid="$2"
-
-  if [ -z "$gid" ]; then
-    declare -r gid_flags=""
-  else
-    declare -r gid_flags="--gid $gid"
-  fi
-
-  if ! getent group | grep -q "^$group:" ; then
-    echo "Creating system group: $group"
-    groupadd $gid_flags --system $group
-  fi
-}
-
 start_service () {
   : "${1:?'Service name was not defined'}"
   declare -r service_name="$1"
@@ -76,13 +38,10 @@ start_service () {
   fi
 }
 
-
-add_group 'audiobookshelf' ''
-add_user 'audiobookshelf' '' 'audiobookshelf' 'audiobookshelf user-daemon' '/bin/false'
-
-mkdir -p '/var/log/audiobookshelf'
-chown -R 'audiobookshelf:audiobookshelf' '/var/log/audiobookshelf'
-chown -R 'audiobookshelf:audiobookshelf' '/usr/share/audiobookshelf'
-chown -R 'audiobookshelf:audiobookshelf' "$FFMPEG_INSTALL_DIR"
+# Create log directory if not there and set ownership
+if [ ! -d "$ABS_LOG_DIR" ]; then
+  mkdir -p "$ABS_LOG_DIR"
+  chown -R 'audiobookshelf:audiobookshelf' "$ABS_LOG_DIR"
+fi
 
 start_service 'audiobookshelf'

build/debian/DEBIAN/preinst

@@ -2,12 +2,51 @@
 set -e
 set -o pipefail
 
-FFMPEG_INSTALL_DIR="/usr/lib/audiobookshelf-ffmpeg/"
-DEFAULT_DATA_PATH="/usr/share/audiobookshelf"
+FFMPEG_INSTALL_DIR="/usr/lib/audiobookshelf-ffmpeg"
+DEFAULT_DATA_DIR="/usr/share/audiobookshelf"
+CONFIG_PATH="/etc/default/audiobookshelf"
 DEFAULT_PORT=7331
 DEFAULT_HOST="0.0.0.0"
 
-CONFIG_PATH="/etc/default/audiobookshelf"
+
+
+add_user() {
+  : "${1:?'User was not defined'}"
+  declare -r user="$1"
+  declare -r uid="$2"
+
+  if [ -z "$uid" ]; then
+    declare -r uid_flags=""
+  else
+    declare -r uid_flags="--uid $uid"
+  fi
+
+  declare -r group="${3:-$user}"
+  declare -r descr="${4:-No description}"
+  declare -r shell="${5:-/bin/false}"
+
+  if ! getent passwd | grep -q "^$user:"; then
+    echo "Creating system user: $user in $group with $descr and shell $shell"
+    useradd $uid_flags --gid $group --no-create-home --system --shell $shell -c "$descr" $user
+  fi
+}
+
+add_group() {
+  : "${1:?'Group was not defined'}"
+  declare -r group="$1"
+  declare -r gid="$2"
+
+  if [ -z "$gid" ]; then
+    declare -r gid_flags=""
+  else
+    declare -r gid_flags="--gid $gid"
+  fi
+
+  if ! getent group | grep -q "^$group:" ; then
+    echo "Creating system group: $group"
+    groupadd $gid_flags --system $group
+  fi
+}
 
 install_ffmpeg() {
   echo "Starting FFMPEG Install"
@@ -15,8 +54,9 @@ install_ffmpeg() {
   WGET="wget https://johnvansickle.com/ffmpeg/builds/ffmpeg-git-amd64-static.tar.xz"
 
   if ! cd "$FFMPEG_INSTALL_DIR"; then
-    echo "WARNING: can't access working directory ($FFMPEG_INSTALL_DIR) creating it" >&2
+    echo "Creating ffmpeg install dir at $FFMPEG_INSTALL_DIR"
     mkdir "$FFMPEG_INSTALL_DIR"
+    chown -R 'audiobookshelf:audiobookshelf' "$FFMPEG_INSTALL_DIR"
     cd "$FFMPEG_INSTALL_DIR"
   fi
 
@@ -27,73 +67,23 @@ install_ffmpeg() {
   echo "Good to go on Ffmpeg... hopefully"
 }
 
-should_build_config() {
-  if [ -f "$CONFIG_PATH" ]; then
-    echo "You already have a config file. Do you want to use it?"
-
-    options=("Yes" "No")
-    select yn in "${options[@]}"
-    do
-      case $yn in
-          "Yes") 
-            false; return
-            ;;
-          "No")
-            true; return
-            ;;
-      esac
-    done
-  else 
-    echo "No existing config found in $CONFIG_PATH"
-    true; return
-  fi
-}
-
-setup_config_interactive() {
-  if should_build_config; then
-    echo "Okay, let's setup a new config."
-
-    DATA_PATH=""
-    read -p "
-    Enter path for data files, i.e. streams, downloads, database [Default: $DEFAULT_DATA_PATH]:" DATA_PATH
-
-    if [[ -z "$DATA_PATH" ]]; then
-      DATA_PATH="$DEFAULT_DATA_PATH"
-    fi
-
-    PORT=""
-    read -p "
-    Port for the web ui [Default: $DEFAULT_PORT]:" PORT
-
-    if [[ -z "$PORT" ]]; then
-      PORT="$DEFAULT_PORT"
-    fi
-
-    config_text="METADATA_PATH=$DATA_PATH/metadata
-  CONFIG_PATH=$DATA_PATH/config
-  FFMPEG_PATH=/usr/lib/audiobookshelf-ffmpeg/ffmpeg
-  FFPROBE_PATH=/usr/lib/audiobookshelf-ffmpeg/ffprobe
-  PORT=$PORT
-  HOST=$DEFAULT_HOST"
-
-    echo "$config_text"
-
-    echo "$config_text" > /etc/default/audiobookshelf;
-
-    echo "Config created"
-
-  fi
-}
-
 setup_config() {
   if [ -f "$CONFIG_PATH" ]; then
     echo "Existing config found."
     cat $CONFIG_PATH
   else
+
+    if [ ! -d "$DEFAULT_DATA_DIR" ]; then
+      # Create directory and set permissions
+      echo "Creating default data dir at $DEFAULT_DATA_DIR"
+      mkdir "$DEFAULT_DATA_DIR"
+      chown -R 'audiobookshelf:audiobookshelf' "$DEFAULT_DATA_DIR"
+    fi
+
     echo "Creating default config."
 
-    config_text="METADATA_PATH=$DEFAULT_DATA_PATH/metadata
-  CONFIG_PATH=$DEFAULT_DATA_PATH/config
+    config_text="METADATA_PATH=$DEFAULT_DATA_DIR/metadata
+  CONFIG_PATH=$DEFAULT_DATA_DIR/config
   FFMPEG_PATH=/usr/lib/audiobookshelf-ffmpeg/ffmpeg
   FFPROBE_PATH=/usr/lib/audiobookshelf-ffmpeg/ffprobe
   PORT=$DEFAULT_PORT
@@ -107,6 +97,10 @@ setup_config() {
   fi
 }
 
+add_group 'audiobookshelf' ''
+
+add_user 'audiobookshelf' '' 'audiobookshelf' 'audiobookshelf user-daemon' '/bin/false'
+
 setup_config
 
 install_ffmpeg

client/components/modals/rssfeed/ViewModal.vue

@@ -122,7 +122,7 @@ export default {
 
       console.log('Payload', payload)
       this.$axios
-        .$post(`/api/podcasts/${this.libraryItemId}/open-feed`, payload)
+        .$post(`/api/items/${this.libraryItemId}/open-feed`, payload)
         .then((data) => {
           if (data.success) {
             console.log('Opened RSS Feed', data)
@@ -143,7 +143,7 @@ export default {
     closeFeed() {
       this.processing = true
       this.$axios
-        .$post(`/api/podcasts/${this.libraryItem.id}/close-feed`)
+        .$post(`/api/items/${this.libraryItem.id}/close-feed`)
         .then(() => {
           this.$toast.success('RSS Feed Closed')
           this.show = false

client/components/widgets/MoreMenu.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="absolute w-32 bg-bg rounded-md border border-black-200 shadow-lg z-50" v-click-outside="clickOutsideObj" style="top: 0; left: 0">
+  <div class="absolute w-36 bg-bg rounded-md border border-black-200 shadow-lg z-50" v-click-outside="clickOutsideObj" style="top: 0; left: 0">
     <template v-for="(item, index) in items">
       <div :key="index" class="flex h-7 items-center px-2 hover:bg-white hover:bg-opacity-5 text-white text-xs cursor-pointer" @click="clickAction(item.func)">
         <p>{{ item.text }}</p>

client/package.json

@@ -1,6 +1,6 @@
 {
   "name": "audiobookshelf-client",
-  "version": "2.0.14",
+  "version": "2.0.15",
   "description": "Self-hosted audiobook and podcast client",
   "main": "index.js",
   "scripts": {

client/pages/author/_id.vue

@@ -23,13 +23,17 @@
 
       <div class="py-4">
         <widgets-item-slider :items="libraryItems" :bookshelf-view="$constants.BookshelfView.AUTHOR">
-          <h2 class="text-lg">{{ libraryItems.length }} Books</h2>
+          <nuxt-link :to="`/library/${currentLibraryId}/bookshelf?filter=authors.${$encode(author.id)}`" class="hover:underline">
+            <h2 class="text-lg">{{ libraryItems.length }} Books</h2>
+          </nuxt-link>
         </widgets-item-slider>
       </div>
 
       <div v-for="series in authorSeries" :key="series.id" class="py-4">
         <widgets-item-slider :items="series.items" :bookshelf-view="$constants.BookshelfView.AUTHOR">
-          <h2 class="text-lg">{{ series.name }}</h2>
+          <nuxt-link :to="`/library/${currentLibraryId}/series/${series.id}`" class="hover:underline">
+            <h2 class="text-lg">{{ series.name }}</h2>
+          </nuxt-link>
           <p class="text-white text-opacity-40 text-base px-2">Series</p>
         </widgets-item-slider>
       </div>

client/pages/item/_id/index.vue

@@ -383,10 +383,10 @@ export default {
       return this.$store.getters['user/getUserCanDownload']
     },
     showRssFeedBtn() {
-      if (!this.rssFeedUrl && !this.podcastEpisodes.length) return false // Cannot open RSS feed with no episodes
+      if (!this.rssFeedUrl && !this.podcastEpisodes.length && !this.tracks.length) return false // Cannot open RSS feed with no episodes/tracks
 
       // If rss feed is open then show feed url to users otherwise just show to admins
-      return this.isPodcast && (this.userIsAdminOrUp || this.rssFeedUrl)
+      return this.userIsAdminOrUp || this.rssFeedUrl
     }
   },
   methods: {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "audiobookshelf",
-  "version": "2.0.14",
+  "version": "2.0.15",
   "description": "Self-hosted audiobook and podcast server",
   "main": "index.js",
   "scripts": {

server/controllers/LibraryController.js

@@ -86,13 +86,17 @@ class LibraryController {
         return f
       })
       for (var path of newFolderPaths) {
-        var success = await fs.ensureDir(path).then(() => true).catch((error) => {
-          Logger.error(`[LibraryController] Failed to ensure folder dir "${path}"`, error)
-          return false
-        })
-        if (!success) {
-          return res.status(400).send(`Invalid folder directory "${path}"`)
-        } else {
+        var pathExists = await fs.pathExists(path)
+        if (!pathExists) {
+          // Ensure dir will recursively create directories which might be preferred over mkdir
+          var success = await fs.ensureDir(path).then(() => true).catch((error) => {
+            Logger.error(`[LibraryController] Failed to ensure folder dir "${path}"`, error)
+            return false
+          })
+          if (!success) {
+            return res.status(400).send(`Invalid folder directory "${path}"`)
+          }
+          // Set permissions on newly created path
           await filePerms.setDefault(path)
         }
       }

server/controllers/LibraryItemController.js

@@ -405,6 +405,38 @@ class LibraryItemController {
     })
   }
 
+  // POST: api/items/:id/open-feed
+  async openRSSFeed(req, res) {
+    if (!req.user.isAdminOrUp) {
+      Logger.error(`[LibraryItemController] Non-admin user attempted to open RSS feed`, req.user.username)
+      return res.sendStatus(500)
+    }
+
+    const feedData = this.rssFeedManager.openFeedForItem(req.user, req.libraryItem, req.body)
+    if (feedData.error) {
+      return res.json({
+        success: false,
+        error: feedData.error
+      })
+    }
+
+    res.json({
+      success: true,
+      feedUrl: feedData.feedUrl
+    })
+  }
+
+  async closeRSSFeed(req, res) {
+    if (!req.user.isAdminOrUp) {
+      Logger.error(`[LibraryItemController] Non-admin user attempted to close RSS feed`, req.user.username)
+      return res.sendStatus(500)
+    }
+
+    this.rssFeedManager.closeFeedForItem(req.params.id)
+
+    res.sendStatus(200)
+  }
+
   middleware(req, res, next) {
     var item = this.db.libraryItems.find(li => li.id === req.params.id)
     if (!item || !item.media) return res.sendStatus(404)

server/controllers/PodcastController.js

@@ -173,37 +173,6 @@ class PodcastController {
     res.sendStatus(200)
   }
 
-  async openPodcastFeed(req, res) {
-    if (!req.user.isAdminOrUp) {
-      Logger.error(`[PodcastController] Non-admin user attempted to open podcast feed`, req.user.username)
-      return res.sendStatus(500)
-    }
-
-    const feedData = this.rssFeedManager.openPodcastFeed(req.user, req.libraryItem, req.body)
-    if (feedData.error) {
-      return res.json({
-        success: false,
-        error: feedData.error
-      })
-    }
-
-    res.json({
-      success: true,
-      feedUrl: feedData.feedUrl
-    })
-  }
-
-  async closePodcastFeed(req, res) {
-    if (!req.user.isAdminOrUp) {
-      Logger.error(`[PodcastController] Non-admin user attempted to close podcast feed`, req.user.username)
-      return res.sendStatus(500)
-    }
-
-    this.rssFeedManager.closePodcastFeedForItem(req.params.id)
-
-    res.sendStatus(200)
-  }
-
   async updateEpisode(req, res) {
     var libraryItem = req.libraryItem
 

server/managers/RssFeedManager.js

@@ -1,7 +1,7 @@
 const Path = require('path')
 const fs = require('fs-extra')
+const date = require('date-and-time')
 const { Podcast } = require('podcast')
-const { getId } = require('../utils/index')
 const Logger = require('../Logger')
 
 // Not functional at the moment
@@ -60,36 +60,72 @@ class RssFeedManager {
   }
 
   openFeed(userId, slug, libraryItem, serverAddress) {
-    const podcast = libraryItem.media
+    const media = libraryItem.media
+    const mediaMetadata = media.metadata
+    const isPodcast = libraryItem.mediaType === 'podcast'
 
     const feedUrl = `${serverAddress}/feed/${slug}`
-    // Removed Podcast npm package and ip package
+    const author = isPodcast ? mediaMetadata.author : mediaMetadata.authorName
+
     const feed = new Podcast({
-      title: podcast.metadata.title,
-      description: podcast.metadata.description,
+      title: mediaMetadata.title,
+      description: mediaMetadata.description,
       feedUrl,
-      siteUrl: serverAddress,
-      imageUrl: podcast.coverPath ? `${serverAddress}/feed/${slug}/cover` : `${serverAddress}/Logo.png`,
-      author: podcast.metadata.author || 'advplyr',
+      siteUrl: `${serverAddress}/items/${libraryItem.id}`,
+      imageUrl: media.coverPath ? `${serverAddress}/feed/${slug}/cover` : `${serverAddress}/Logo.png`,
+      author: author || 'advplyr',
       language: 'en'
     })
-    podcast.episodes.forEach((episode) => {
-      var contentUrl = episode.audioTrack.contentUrl.replace(/\\/g, '/')
-      contentUrl = contentUrl.replace(`/s/item/${libraryItem.id}`, `/feed/${slug}/item`)
 
-      feed.addItem({
-        title: episode.title,
-        description: episode.description || '',
-        enclosure: {
+    if (isPodcast) { // PODCAST EPISODES
+      media.episodes.forEach((episode) => {
+        var contentUrl = episode.audioTrack.contentUrl.replace(/\\/g, '/')
+        contentUrl = contentUrl.replace(`/s/item/${libraryItem.id}`, `/feed/${slug}/item`)
+
+        feed.addItem({
+          title: episode.title,
+          description: episode.description || '',
+          enclosure: {
+            url: `${serverAddress}${contentUrl}`,
+            type: episode.audioTrack.mimeType,
+            size: episode.size
+          },
+          date: episode.pubDate || '',
           url: `${serverAddress}${contentUrl}`,
-          type: episode.audioTrack.mimeType,
-          size: episode.size
-        },
-        date: episode.pubDate || '',
-        url: `${serverAddress}${contentUrl}`,
-        author: podcast.metadata.author || 'advplyr'
+          author: author || 'advplyr'
+        })
       })
-    })
+    } else { // AUDIOBOOK EPISODES
+
+      // Example: <pubDate>Fri, 04 Feb 2015 00:00:00 GMT</pubDate>
+      const audiobookPubDate = date.format(new Date(libraryItem.addedAt), 'ddd, DD MMM YYYY HH:mm:ss [GMT]')
+
+      media.tracks.forEach((audioTrack) => {
+        var contentUrl = audioTrack.contentUrl.replace(/\\/g, '/')
+        contentUrl = contentUrl.replace(`/s/item/${libraryItem.id}`, `/feed/${slug}/item`)
+
+        var title = audioTrack.title
+        if (media.chapters.length) {
+          // If audio track start and chapter start are within 1 seconds of eachother then use the chapter title
+          var matchingChapter = media.chapters.find(ch => Math.abs(ch.start - audioTrack.startOffset) < 1)
+          if (matchingChapter && matchingChapter.title) title = matchingChapter.title
+        }
+
+        feed.addItem({
+          title,
+          description: '',
+          enclosure: {
+            url: `${serverAddress}${contentUrl}`,
+            type: audioTrack.mimeType,
+            size: audioTrack.metadata.size
+          },
+          date: audiobookPubDate,
+          url: `${serverAddress}${contentUrl}`,
+          author: author || 'advplyr'
+        })
+      })
+    }
+
 
     const feedData = {
       id: slug,
@@ -97,7 +133,7 @@ class RssFeedManager {
       userId,
       libraryItemId: libraryItem.id,
       libraryItemPath: libraryItem.path,
-      mediaCoverPath: podcast.coverPath,
+      mediaCoverPath: media.coverPath,
       serverAddress: serverAddress,
       feedUrl,
       feed
@@ -106,7 +142,7 @@ class RssFeedManager {
     return feedData
   }
 
-  openPodcastFeed(user, libraryItem, options) {
+  openFeedForItem(user, libraryItem, options) {
     const serverAddress = options.serverAddress
     const slug = options.slug
 
@@ -118,12 +154,12 @@ class RssFeedManager {
     }
 
     const feedData = this.openFeed(user.id, slug, libraryItem, serverAddress)
-    Logger.debug(`[RssFeedManager] Opened podcast feed ${feedData.feedUrl}`)
+    Logger.debug(`[RssFeedManager] Opened RSS feed ${feedData.feedUrl}`)
     this.emitter('rss_feed_open', { libraryItemId: libraryItem.id, feedUrl: feedData.feedUrl })
     return feedData
   }
 
-  closePodcastFeedForItem(libraryItemId) {
+  closeFeedForItem(libraryItemId) {
     var feed = this.findFeedForItem(libraryItemId)
     if (!feed) return
     this.closeRssFeed(feed.id)

server/routers/ApiRouter.js

@@ -95,6 +95,8 @@ class ApiRouter {
     this.router.get('/items/:id/scan', LibraryItemController.middleware.bind(this), LibraryItemController.scan.bind(this))
     this.router.get('/items/:id/audio-metadata', LibraryItemController.middleware.bind(this), LibraryItemController.updateAudioFileMetadata.bind(this))
     this.router.post('/items/:id/chapters', LibraryItemController.middleware.bind(this), LibraryItemController.updateMediaChapters.bind(this))
+    this.router.post('/items/:id/open-feed', LibraryItemController.middleware.bind(this), LibraryItemController.openRSSFeed.bind(this))
+    this.router.post('/items/:id/close-feed', LibraryItemController.middleware.bind(this), LibraryItemController.closeRSSFeed.bind(this))
 
     this.router.post('/items/batch/delete', LibraryItemController.batchDelete.bind(this))
     this.router.post('/items/batch/update', LibraryItemController.batchUpdate.bind(this))
@@ -186,8 +188,6 @@ class ApiRouter {
     this.router.get('/podcasts/:id/downloads', PodcastController.middleware.bind(this), PodcastController.getEpisodeDownloads.bind(this))
     this.router.get('/podcasts/:id/clear-queue', PodcastController.middleware.bind(this), PodcastController.clearEpisodeDownloadQueue.bind(this))
     this.router.post('/podcasts/:id/download-episodes', PodcastController.middleware.bind(this), PodcastController.downloadEpisodes.bind(this))
-    this.router.post('/podcasts/:id/open-feed', PodcastController.middleware.bind(this), PodcastController.openPodcastFeed.bind(this))
-    this.router.post('/podcasts/:id/close-feed', PodcastController.middleware.bind(this), PodcastController.closePodcastFeed.bind(this))
     this.router.patch('/podcasts/:id/episode/:episodeId', PodcastController.middleware.bind(this), PodcastController.updateEpisode.bind(this))
 
     //

server/utils/libraryHelpers.js

@@ -418,7 +418,7 @@ module.exports = {
                   books: [libraryItemJson],
                   inProgress: bookInProgress,
                   bookInProgressLastUpdate: bookInProgress ? mediaProgress.lastUpdate : null,
-                  sequenceInProgress: bookInProgress ? libraryItemJson.seriesSequence : null
+                  firstBookUnread: bookInProgress ? libraryItemJson : null
                 }
                 seriesMap[librarySeries.id] = series
 
@@ -445,10 +445,18 @@ module.exports = {
 
               if (bookInProgress) { // Update if this series is in progress
                 seriesMap[librarySeries.id].inProgress = true
-                if (!seriesMap[librarySeries.id].sequenceInProgress || (librarySeries.sequence && String(librarySeries.sequence).localeCompare(String(seriesMap[librarySeries.id].sequenceInProgress), undefined, { sensitivity: 'base', numeric: true }) > 0)) {
-                  seriesMap[librarySeries.id].sequenceInProgress = librarySeries.sequence
+
+                if (seriesMap[librarySeries.id].bookInProgressLastUpdate > mediaProgress.lastUpdate) {
                   seriesMap[librarySeries.id].bookInProgressLastUpdate = mediaProgress.lastUpdate
                 }
+              } else if (!seriesMap[librarySeries.id].firstBookUnread) {
+                seriesMap[librarySeries.id].firstBookUnread = libraryItemJson
+              } else if (libraryItemJson.seriesSequence) {
+                // If current firstBookUnread has a series sequence greater than this series sequence, then update firstBookUnread
+                const firstBookUnreadSequence = seriesMap[librarySeries.id].firstBookUnread.seriesSequence
+                if (!firstBookUnreadSequence || String(firstBookUnreadSequence).localeCompare(String(librarySeries.sequence), undefined, { sensitivity: 'base', numeric: true }) > 0) {
+                  seriesMap[librarySeries.id].firstBookUnread = libraryItemJson
+                }
               }
             }
           }
@@ -545,11 +553,8 @@ module.exports = {
       if (seriesMap[seriesId].inProgress) {
         seriesMap[seriesId].books = naturalSort(seriesMap[seriesId].books).asc(li => li.seriesSequence)
 
-        const nextBookInSeries = seriesMap[seriesId].books.find(li => {
-          if (!seriesMap[seriesId].sequenceInProgress) return true
-          // True if book series sequence is greater than the current book sequence in progress
-          return String(li.seriesSequence).localeCompare(String(seriesMap[seriesId].sequenceInProgress), undefined, { sensitivity: 'base', numeric: true }) > 0
-        })
+        // NEW implementation takes the first book unread with the smallest series sequence
+        const nextBookInSeries = seriesMap[seriesId].firstBookUnread
 
         if (nextBookInSeries) {
           const bookForContinueSeries = {