From 31146082f053a9eee9876141467e5a0dbd518149 Mon Sep 17 00:00:00 2001
From: advplyr <advplyr@protonmail.com>
Date: Sat, 29 Jun 2024 15:05:35 -0500
Subject: [PATCH] Update:Media item share endpoints and audio player #1768 -
 Add endpoints for getting tracks, getting cover image and updating progress -
 Implement share session cookie and caching share playback session - Audio
 player UI/UX

---
 client/pages/share/_slug.vue          |  86 +++++++++++++---
 server/controllers/ShareController.js | 138 ++++++++++++++++++++++----
 server/managers/ShareManager.js       |  20 ++++
 server/models/MediaItemShare.js       |  10 +-
 server/objects/PlaybackSession.js     |   4 +
 server/routers/PublicRouter.js        |   4 +-
 6 files changed, 229 insertions(+), 33 deletions(-)

diff --git a/client/pages/share/_slug.vue b/client/pages/share/_slug.vue
index cf7700f127..9f58d21da3 100644
--- a/client/pages/share/_slug.vue
+++ b/client/pages/share/_slug.vue
@@ -1,10 +1,14 @@
 <template>
-  <div id="page-wrapper" class="w-full h-screen overflow-y-auto">
+  <div id="page-wrapper" class="w-full h-screen max-h-screen overflow-hidden">
     <div class="w-full h-full flex items-center justify-center">
-      <div class="w-full p-8">
-        <p class="text-3xl font-semibold text-center mb-6">{{ mediaItemShare.playbackSession?.displayTitle || 'N/A' }}</p>
+      <div class="w-full p-2 sm:p-4 md:p-8">
+        <div :style="{ width: coverWidth + 'px', height: coverHeight + 'px' }" class="mx-auto overflow-hidden rounded-xl my-2">
+          <img :src="coverUrl" class="object-contain w-full h-full" />
+        </div>
+        <p class="text-2xl md:text-3xl font-semibold text-center mb-1">{{ mediaItemShare.playbackSession.displayTitle || 'No title' }}</p>
+        <p v-if="mediaItemShare.playbackSession.displayAuthor" class="text-xl text-slate-400 font-semibold text-center mb-1">{{ mediaItemShare.playbackSession.displayAuthor }}</p>
 
-        <div class="w-full py-8">
+        <div class="w-full pt-16">
           <player-ui ref="audioPlayer" :chapters="chapters" :paused="isPaused" :loading="!hasLoaded" :is-podcast="false" hide-bookmarks hide-sleep-timer @playPause="playPause" @jumpForward="jumpForward" @jumpBackward="jumpBackward" @setVolume="setVolume" @setPlaybackRate="setPlaybackRate" @seek="seek" />
         </div>
       </div>
@@ -36,12 +40,25 @@ export default {
       playerState: null,
       playInterval: null,
       hasLoaded: false,
-      totalDuration: 0
+      totalDuration: 0,
+      windowWidth: 0,
+      windowHeight: 0,
+      listeningTimeSinceSync: 0
     }
   },
   computed: {
+    playbackSession() {
+      return this.mediaItemShare.playbackSession
+    },
+    coverUrl() {
+      if (!this.playbackSession.coverPath) return `${this.$config.routerBasePath}/book_placeholder.jpg`
+      if (process.env.NODE_ENV === 'development') {
+        return `http://localhost:3333/public/share/${this.mediaItemShare.slug}/cover`
+      }
+      return `/public/share/${this.mediaItemShare.slug}/cover`
+    },
     audioTracks() {
-      return (this.mediaItemShare.playbackSession?.audioTracks || []).map((track) => {
+      return (this.playbackSession.audioTracks || []).map((track) => {
         if (process.env.NODE_ENV === 'development') {
           track.contentUrl = `${process.env.serverUrl}${track.contentUrl}`
         }
@@ -56,7 +73,24 @@ export default {
       return !this.isPlaying
     },
     chapters() {
-      return this.mediaItemShare.playbackSession?.chapters || []
+      return this.playbackSession.chapters || []
+    },
+    coverAspectRatio() {
+      const coverAspectRatio = this.playbackSession.coverAspectRatio
+      return coverAspectRatio === this.$constants.BookCoverAspectRatio.STANDARD ? 1.6 : 1
+    },
+    coverWidth() {
+      const availableCoverWidth = Math.min(450, this.windowWidth - 32)
+      const availableCoverHeight = Math.min(450, this.windowHeight - 250)
+
+      const mostCoverHeight = availableCoverWidth * this.coverAspectRatio
+      if (mostCoverHeight > availableCoverHeight) {
+        return availableCoverHeight / this.coverAspectRatio
+      }
+      return availableCoverWidth
+    },
+    coverHeight() {
+      return this.coverWidth * this.coverAspectRatio
     }
   },
   methods: {
@@ -102,11 +136,29 @@ export default {
         this.$refs.audioPlayer.setDuration(this.totalDuration)
       }
     },
+    sendProgressSync(currentTime) {
+      console.log('Sending progress sync for time', currentTime)
+      const progress = {
+        currentTime
+      }
+      this.$axios.$patch(`/public/share/${this.mediaItemShare.slug}/progress`, progress, { progress: false }).catch((error) => {
+        console.error('Failed to send progress sync', error)
+      })
+    },
     startPlayInterval() {
+      let lastTick = Date.now()
       clearInterval(this.playInterval)
       this.playInterval = setInterval(() => {
-        if (this.localAudioPlayer) {
-          this.setCurrentTime(this.localAudioPlayer.getCurrentTime())
+        if (!this.localAudioPlayer) return
+
+        const currentTime = this.localAudioPlayer.getCurrentTime()
+        this.setCurrentTime(currentTime)
+        const exactTimeElapsed = (Date.now() - lastTick) / 1000
+        lastTick = Date.now()
+        this.listeningTimeSinceSync += exactTimeElapsed
+        if (this.listeningTimeSinceSync >= 30) {
+          this.listeningTimeSinceSync = 0
+          this.sendProgressSync(currentTime)
         }
       }, 1000)
     },
@@ -115,7 +167,6 @@ export default {
       this.playInterval = null
     },
     playerStateChange(state) {
-      console.log('Player state change', state)
       this.playerState = state
       if (state === 'LOADED' || state === 'PLAYING') {
         this.setDuration()
@@ -158,17 +209,28 @@ export default {
         this.$eventBus.$emit('player-hotkey', name)
         e.preventDefault()
       }
+    },
+    resize() {
+      this.windowWidth = window.innerWidth
+      this.windowHeight = window.innerHeight
     }
   },
   mounted() {
+    this.resize()
+    window.addEventListener('resize', this.resize)
     window.addEventListener('keydown', this.keyDown)
 
-    console.log('Loaded media item share', this.mediaItemShare)
-    this.localAudioPlayer.set(null, this.audioTracks, false, 0, false)
+    if (process.env.NODE_ENV === 'development') {
+      console.log('Loaded media item share', this.mediaItemShare)
+    }
+
+    const startTime = this.playbackSession.currentTime || 0
+    this.localAudioPlayer.set(null, this.audioTracks, false, startTime, false)
     this.localAudioPlayer.on('stateChange', this.playerStateChange.bind(this))
     this.localAudioPlayer.on('timeupdate', this.playerTimeUpdate.bind(this))
   },
   beforeDestroy() {
+    window.removeEventListener('resize', this.resize)
     window.removeEventListener('keydown', this.keyDown)
 
     this.localAudioPlayer.off('stateChange', this.playerStateChange)
diff --git a/server/controllers/ShareController.js b/server/controllers/ShareController.js
index 02365fd610..040a5a7761 100644
--- a/server/controllers/ShareController.js
+++ b/server/controllers/ShareController.js
@@ -1,3 +1,4 @@
+const uuidv4 = require('uuid').v4
 const Path = require('path')
 const { Op } = require('sequelize')
 const Logger = require('../Logger')
@@ -32,6 +33,18 @@ class ShareController {
       return res.status(404).send('Media item share not found')
     }
 
+    if (req.cookies.share_session_id) {
+      const playbackSession = ShareManager.findPlaybackSessionBySessionId(req.cookies.share_session_id)
+      if (playbackSession) {
+        Logger.debug(`[ShareController] Found share playback session ${req.cookies.share_session_id}`)
+        mediaItemShare.playbackSession = playbackSession.toJSONForClient()
+        return res.json(mediaItemShare)
+      } else {
+        Logger.info(`[ShareController] Share playback session not found with id ${req.cookies.share_session_id}`)
+        res.clearCookie('share_session_id')
+      }
+    }
+
     try {
       const oldLibraryItem = await Database.mediaItemShareModel.getMediaItemsOldLibraryItem(mediaItemShare.mediaItemId, mediaItemShare.mediaItemType)
 
@@ -46,7 +59,7 @@ class ShareController {
           startOffset,
           duration: audioFile.duration,
           title: audioFile.metadata.filename || '',
-          contentUrl: `${global.RouterBasePath}/public/share/${slug}/file/${audioFile.ino}`,
+          contentUrl: `${global.RouterBasePath}/public/share/${slug}/track/${audioFile.index}`,
           mimeType: audioFile.mimeType,
           codec: audioFile.codec || null,
           metadata: audioFile.metadata.clone()
@@ -59,8 +72,15 @@ class ShareController {
       newPlaybackSession.setData(oldLibraryItem, null, 'web-public', null, 0)
       newPlaybackSession.audioTracks = publicTracks
       newPlaybackSession.playMethod = PlayMethod.DIRECTPLAY
+      newPlaybackSession.shareSessionId = uuidv4() // New share session id
+      newPlaybackSession.mediaItemShareId = mediaItemShare.id
+      newPlaybackSession.coverAspectRatio = oldLibraryItem.librarySettings.coverAspectRatio
 
       mediaItemShare.playbackSession = newPlaybackSession.toJSONForClient()
+      ShareManager.addOpenSharePlaybackSession(newPlaybackSession)
+
+      // 30 day cookie
+      res.cookie('share_session_id', newPlaybackSession.shareSessionId, { maxAge: 1000 * 60 * 60 * 24 * 30, httpOnly: true })
 
       res.json(mediaItemShare)
     } catch (error) {
@@ -70,45 +90,127 @@ class ShareController {
   }
 
   /**
-   * Public route
-   * GET: /api/share/:slug/file/:fileid
-   * Get media item share file
+   * Public route - requires share_session_id cookie
+   *
+   * GET: /api/share/:slug/cover
+   * Get media item share cover image
    *
    * @param {import('express').Request} req
    * @param {import('express').Response} res
    */
-  async getMediaItemShareFile(req, res) {
-    const { slug, fileid } = req.params
+  async getMediaItemShareCoverImage(req, res) {
+    if (!req.cookies.share_session_id) {
+      return res.status(404).send('Share session not set')
+    }
+
+    const { slug } = req.params
 
     const mediaItemShare = ShareManager.findBySlug(slug)
     if (!mediaItemShare) {
       return res.status(404)
     }
 
-    /** @type {import('../models/LibraryItem')} */
-    const libraryItem = await Database.libraryItemModel.findOne({
-      where: {
-        mediaId: mediaItemShare.mediaItemId
-      }
-    })
+    const playbackSession = ShareManager.findPlaybackSessionBySessionId(req.cookies.share_session_id)
+    if (!playbackSession || playbackSession.mediaItemShareId !== mediaItemShare.id) {
+      res.clearCookie('share_session_id')
+      return res.status(404).send('Share session not found')
+    }
+
+    const coverPath = playbackSession.coverPath
+    if (!coverPath) {
+      return res.status(404).send('Cover image not found')
+    }
+
+    if (global.XAccel) {
+      const encodedURI = encodeUriPath(global.XAccel + coverPath)
+      Logger.debug(`Use X-Accel to serve static file ${encodedURI}`)
+      return res.status(204).header({ 'X-Accel-Redirect': encodedURI }).send()
+    }
+
+    res.sendFile(coverPath)
+  }
+
+  /**
+   * Public route - requires share_session_id cookie
+   *
+   * GET: /api/share/:slug/track/:index
+   * Get media item share audio track
+   *
+   * @param {import('express').Request} req
+   * @param {import('express').Response} res
+   */
+  async getMediaItemShareAudioTrack(req, res) {
+    if (!req.cookies.share_session_id) {
+      return res.status(404).send('Share session not set')
+    }
 
-    const libraryFile = libraryItem?.libraryFiles.find((lf) => lf.ino === fileid)
-    if (!libraryFile) {
-      return res.status(404).send('File not found')
+    const { slug, index } = req.params
+
+    const mediaItemShare = ShareManager.findBySlug(slug)
+    if (!mediaItemShare) {
+      return res.status(404)
+    }
+
+    const playbackSession = ShareManager.findPlaybackSessionBySessionId(req.cookies.share_session_id)
+    if (!playbackSession || playbackSession.mediaItemShareId !== mediaItemShare.id) {
+      res.clearCookie('share_session_id')
+      return res.status(404).send('Share session not found')
+    }
+
+    const audioTrack = playbackSession.audioTracks.find((t) => t.index === parseInt(index))
+    if (!audioTrack) {
+      return res.status(404).send('Track not found')
     }
+    const audioTrackPath = audioTrack.metadata.path
 
     if (global.XAccel) {
-      const encodedURI = encodeUriPath(global.XAccel + libraryFile.metadata.path)
+      const encodedURI = encodeUriPath(global.XAccel + audioTrackPath)
       Logger.debug(`Use X-Accel to serve static file ${encodedURI}`)
       return res.status(204).header({ 'X-Accel-Redirect': encodedURI }).send()
     }
 
     // Express does not set the correct mimetype for m4b files so use our defined mimetypes if available
-    const audioMimeType = getAudioMimeTypeFromExtname(Path.extname(libraryFile.metadata.path))
+    const audioMimeType = getAudioMimeTypeFromExtname(Path.extname(audioTrackPath))
     if (audioMimeType) {
       res.setHeader('Content-Type', audioMimeType)
     }
-    res.sendFile(libraryFile.metadata.path)
+    res.sendFile(audioTrackPath)
+  }
+
+  /**
+   * Public route - requires share_session_id cookie
+   *
+   * PATCH: /api/share/:slug/progress
+   * Update media item share progress
+   *
+   * @param {import('express').Request} req
+   * @param {import('express').Response} res
+   */
+  async updateMediaItemShareProgress(req, res) {
+    if (!req.cookies.share_session_id) {
+      return res.status(404).send('Share session not set')
+    }
+
+    const { slug } = req.params
+    const { currentTime } = req.body
+    if (currentTime === null || isNaN(currentTime) || currentTime < 0) {
+      return res.status(400).send('Invalid current time')
+    }
+
+    const mediaItemShare = ShareManager.findBySlug(slug)
+    if (!mediaItemShare) {
+      return res.status(404)
+    }
+
+    const playbackSession = ShareManager.findPlaybackSessionBySessionId(req.cookies.share_session_id)
+    if (!playbackSession || playbackSession.mediaItemShareId !== mediaItemShare.id) {
+      res.clearCookie('share_session_id')
+      return res.status(404).send('Share session not found')
+    }
+
+    playbackSession.currentTime = Math.min(currentTime, playbackSession.duration)
+    Logger.debug(`[ShareController] Update share playback session ${req.cookies.share_session_id} currentTime: ${playbackSession.currentTime}`)
+    res.sendStatus(204)
   }
 
   /**
diff --git a/server/managers/ShareManager.js b/server/managers/ShareManager.js
index 930329c82d..da3b6fc59a 100644
--- a/server/managers/ShareManager.js
+++ b/server/managers/ShareManager.js
@@ -12,12 +12,23 @@ class ShareManager {
   constructor() {
     /** @type {OpenMediaItemShareObject[]} */
     this.openMediaItemShares = []
+
+    /** @type {import('../objects/PlaybackSession')[]} */
+    this.openSharePlaybackSessions = []
   }
 
   init() {
     this.loadMediaItemShares()
   }
 
+  /**
+   * @param {import('../objects/PlaybackSession')} playbackSession
+   */
+  addOpenSharePlaybackSession(playbackSession) {
+    Logger.info(`[ShareManager] Adding new open share playback session ${playbackSession.shareSessionId}`)
+    this.openSharePlaybackSessions.push(playbackSession)
+  }
+
   /**
    * Find an open media item share by media item ID
    * @param {string} mediaItemId
@@ -52,6 +63,14 @@ class ShareManager {
     return null
   }
 
+  /**
+   * @param {string} shareSessionId
+   * @returns {import('../objects/PlaybackSession')}
+   */
+  findPlaybackSessionBySessionId(shareSessionId) {
+    return this.openSharePlaybackSessions.find((s) => s.shareSessionId === shareSessionId)
+  }
+
   /**
    * Load all media item shares from the database
    * Remove expired & schedule active
@@ -123,6 +142,7 @@ class ShareManager {
     }
 
     this.openMediaItemShares = this.openMediaItemShares.filter((s) => s.id !== mediaItemShareId)
+    this.openSharePlaybackSessions = this.openSharePlaybackSessions.filter((s) => s.mediaItemShareId !== mediaItemShareId)
     await this.destroyMediaItemShare(mediaItemShareId)
   }
 
diff --git a/server/models/MediaItemShare.js b/server/models/MediaItemShare.js
index 9a6a1ac330..ffdc3ddd1f 100644
--- a/server/models/MediaItemShare.js
+++ b/server/models/MediaItemShare.js
@@ -67,14 +67,20 @@ class MediaItemShare extends Model {
             }
           },
           {
-            model: this.sequelize.models.libraryItem
+            model: this.sequelize.models.libraryItem,
+            include: {
+              model: this.sequelize.models.library,
+              attributes: ['settings']
+            }
           }
         ]
       })
       const libraryItem = book.libraryItem
       libraryItem.media = book
       delete book.libraryItem
-      return this.sequelize.models.libraryItem.getOldLibraryItem(libraryItem)
+      const oldLibraryItem = this.sequelize.models.libraryItem.getOldLibraryItem(libraryItem)
+      oldLibraryItem.librarySettings = libraryItem.library.settings
+      return oldLibraryItem
     }
     return null
   }
diff --git a/server/objects/PlaybackSession.js b/server/objects/PlaybackSession.js
index 0d62738cc9..4a5b7d1ef4 100644
--- a/server/objects/PlaybackSession.js
+++ b/server/objects/PlaybackSession.js
@@ -43,6 +43,10 @@ class PlaybackSession {
     this.audioTracks = []
     this.videoTrack = null
     this.stream = null
+    // Used for share sessions
+    this.shareSessionId = null
+    this.mediaItemShareId = null
+    this.coverAspectRatio = null
 
     if (session) {
       this.construct(session)
diff --git a/server/routers/PublicRouter.js b/server/routers/PublicRouter.js
index addf095b88..329a406628 100644
--- a/server/routers/PublicRouter.js
+++ b/server/routers/PublicRouter.js
@@ -10,7 +10,9 @@ class PublicRouter {
 
   init() {
     this.router.get('/share/:slug', ShareController.getMediaItemShareBySlug.bind(this))
-    this.router.get('/share/:slug/file/:fileid', ShareController.getMediaItemShareFile.bind(this))
+    this.router.get('/share/:slug/track/:index', ShareController.getMediaItemShareAudioTrack.bind(this))
+    this.router.get('/share/:slug/cover', ShareController.getMediaItemShareCoverImage.bind(this))
+    this.router.patch('/share/:slug/progress', ShareController.updateMediaItemShareProgress.bind(this))
   }
 }
 module.exports = PublicRouter