Add in app download functionality

app/build.gradle.kts

@@ -6,6 +6,7 @@ plugins {
     alias(libs.plugins.kotlin.android)
     alias(libs.plugins.kotlin.ksp)
     alias(libs.plugins.kotlin.parcelize)
+    alias(libs.plugins.kotlin.serialization)
     alias(libs.plugins.compose.compiler)
     alias(libs.plugins.detekt)
     alias(libs.plugins.android.junit5)
@@ -108,6 +109,7 @@ dependencies {
 
     // Kotlin
     implementation(libs.bundles.coroutines)
+    implementation(libs.kotlin.serialization.json)
 
     // Core
     implementation(libs.bundles.koin)
@@ -141,6 +143,7 @@ dependencies {
         }
     }
     implementation(libs.okhttp)
+    implementation(libs.okio)
     implementation(libs.coil)
     implementation(libs.cronet.embedded)
 
@@ -157,6 +160,7 @@ dependencies {
 
     // Room
     implementation(libs.bundles.androidx.room)
+    implementation(libs.androidx.room.ktx)
     ksp(libs.androidx.room.compiler)
 
     // Monitoring

app/schemas/org.jellyfin.mobile.data.JellyfinDatabase/2.json

@@ -28,10 +28,10 @@
           }
         ],
         "primaryKey": {
+          "autoGenerate": true,
           "columnNames": [
             "id"
-          ],
-          "autoGenerate": true
+          ]
         },
         "indices": [
           {
@@ -82,10 +82,10 @@
           }
         ],
         "primaryKey": {
+          "autoGenerate": true,
           "columnNames": [
             "id"
-          ],
-          "autoGenerate": true
+          ]
         },
         "indices": [
           {

app/schemas/org.jellyfin.mobile.data.JellyfinDatabase/3.json

@@ -0,0 +1,159 @@
+{
+  "formatVersion": 1,
+  "database": {
+    "version": 3,
+    "identityHash": "26b179bda28d76008389cab4ce8cb631",
+    "entities": [
+      {
+        "tableName": "Server",
+        "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, `hostname` TEXT NOT NULL, `last_used_timestamp` INTEGER NOT NULL)",
+        "fields": [
+          {
+            "fieldPath": "id",
+            "columnName": "id",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "hostname",
+            "columnName": "hostname",
+            "affinity": "TEXT",
+            "notNull": true
+          },
+          {
+            "fieldPath": "lastUsedTimestamp",
+            "columnName": "last_used_timestamp",
+            "affinity": "INTEGER",
+            "notNull": true
+          }
+        ],
+        "primaryKey": {
+          "autoGenerate": true,
+          "columnNames": [
+            "id"
+          ]
+        },
+        "indices": [
+          {
+            "name": "index_Server_hostname",
+            "unique": true,
+            "columnNames": [
+              "hostname"
+            ],
+            "orders": [],
+            "createSql": "CREATE UNIQUE INDEX IF NOT EXISTS `index_Server_hostname` ON `${TABLE_NAME}` (`hostname`)"
+          }
+        ],
+        "foreignKeys": []
+      },
+      {
+        "tableName": "User",
+        "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, `server_id` INTEGER NOT NULL, `user_id` TEXT NOT NULL, `access_token` TEXT, `last_login_timestamp` INTEGER NOT NULL, FOREIGN KEY(`server_id`) REFERENCES `Server`(`id`) ON UPDATE NO ACTION ON DELETE NO ACTION )",
+        "fields": [
+          {
+            "fieldPath": "id",
+            "columnName": "id",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "serverId",
+            "columnName": "server_id",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "userId",
+            "columnName": "user_id",
+            "affinity": "TEXT",
+            "notNull": true
+          },
+          {
+            "fieldPath": "accessToken",
+            "columnName": "access_token",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "lastLoginTimestamp",
+            "columnName": "last_login_timestamp",
+            "affinity": "INTEGER",
+            "notNull": true
+          }
+        ],
+        "primaryKey": {
+          "autoGenerate": true,
+          "columnNames": [
+            "id"
+          ]
+        },
+        "indices": [
+          {
+            "name": "index_User_server_id_user_id",
+            "unique": true,
+            "columnNames": [
+              "server_id",
+              "user_id"
+            ],
+            "orders": [],
+            "createSql": "CREATE UNIQUE INDEX IF NOT EXISTS `index_User_server_id_user_id` ON `${TABLE_NAME}` (`server_id`, `user_id`)"
+          }
+        ],
+        "foreignKeys": [
+          {
+            "table": "Server",
+            "onDelete": "NO ACTION",
+            "onUpdate": "NO ACTION",
+            "columns": [
+              "server_id"
+            ],
+            "referencedColumns": [
+              "id"
+            ]
+          }
+        ]
+      },
+      {
+        "tableName": "Download",
+        "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`item_id` TEXT NOT NULL, `media_source` TEXT NOT NULL, PRIMARY KEY(`item_id`))",
+        "fields": [
+          {
+            "fieldPath": "itemId",
+            "columnName": "item_id",
+            "affinity": "TEXT",
+            "notNull": true
+          },
+          {
+            "fieldPath": "mediaSource",
+            "columnName": "media_source",
+            "affinity": "TEXT",
+            "notNull": true
+          }
+        ],
+        "primaryKey": {
+          "autoGenerate": false,
+          "columnNames": [
+            "item_id"
+          ]
+        },
+        "indices": [
+          {
+            "name": "index_Download_item_id",
+            "unique": true,
+            "columnNames": [
+              "item_id"
+            ],
+            "orders": [],
+            "createSql": "CREATE UNIQUE INDEX IF NOT EXISTS `index_Download_item_id` ON `${TABLE_NAME}` (`item_id`)"
+          }
+        ],
+        "foreignKeys": []
+      }
+    ],
+    "views": [],
+    "setupQueries": [
+      "CREATE TABLE IF NOT EXISTS room_master_table (id INTEGER PRIMARY KEY,identity_hash TEXT)",
+      "INSERT OR REPLACE INTO room_master_table (id,identity_hash) VALUES(42, '26b179bda28d76008389cab4ce8cb631')"
+    ]
+  }
+}

app/src/main/AndroidManifest.xml

@@ -13,9 +13,11 @@
         android:required="false"
         android:usesPermissionFlags="neverForLocation"
         tools:targetApi="s" />
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
     <uses-permission android:name="android.permission.WAKE_LOCK" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_DATA_SYNC" />
 
     <uses-permission
         android:name="android.permission.READ_EXTERNAL_STORAGE"
@@ -26,6 +28,8 @@
         android:maxSdkVersion="28"
         tools:ignore="ScopedStorage" />
 
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+
     <queries>
         <intent>
             <action android:name="android.intent.action.VIEW" />
@@ -84,6 +88,17 @@
             </intent-filter>
         </service>
 
+        <service android:name="org.jellyfin.mobile.downloads.JellyfinDownloadService"
+            android:exported="false"
+            android:foregroundServiceType="dataSync">
+            <!-- This is needed for Scheduler -->
+            <intent-filter>
+                <action android:name="androidx.media3.exoplayer.downloadService.action.RESTART"/>
+                <category android:name="android.intent.category.DEFAULT"/>
+            </intent-filter>
+        </service>
+
+
         <receiver
             android:name="androidx.mediarouter.media.MediaTransferReceiver"
             android:exported="true"

app/src/main/assets/native/nativeshell.js

@@ -71,6 +71,10 @@ window.NativeShell = {
         window.NativeInterface.openClientSettings();
     },
 
+    openDownloads() {
+        window.NativeInterface.openDownloads();
+    },
+
     selectServer() {
         window.NativeInterface.openServerSelection();
     },

app/src/main/java/org/jellyfin/mobile/app/AppModule.kt

@@ -2,6 +2,8 @@ package org.jellyfin.mobile.app
 
 import android.content.Context
 import coil.ImageLoader
+import com.google.android.exoplayer2.database.DatabaseProvider
+import com.google.android.exoplayer2.database.StandaloneDatabaseProvider
 import com.google.android.exoplayer2.ext.cronet.CronetDataSource
 import com.google.android.exoplayer2.extractor.DefaultExtractorsFactory
 import com.google.android.exoplayer2.extractor.ts.TsExtractor
@@ -10,16 +12,20 @@ import com.google.android.exoplayer2.source.MediaSource
 import com.google.android.exoplayer2.source.ProgressiveMediaSource
 import com.google.android.exoplayer2.source.SingleSampleMediaSource
 import com.google.android.exoplayer2.source.hls.HlsMediaSource
-import com.google.android.exoplayer2.upstream.DataSource
 import com.google.android.exoplayer2.upstream.DefaultDataSource
 import com.google.android.exoplayer2.upstream.DefaultHttpDataSource
+import com.google.android.exoplayer2.upstream.cache.Cache
+import com.google.android.exoplayer2.upstream.cache.CacheDataSource
+import com.google.android.exoplayer2.upstream.cache.NoOpCacheEvictor
+import com.google.android.exoplayer2.upstream.cache.SimpleCache
 import com.google.android.exoplayer2.util.Util
 import kotlinx.coroutines.channels.Channel
 import okhttp3.OkHttpClient
 import org.chromium.net.CronetEngine
 import org.chromium.net.CronetProvider
 import org.jellyfin.mobile.MainViewModel
 import org.jellyfin.mobile.bridge.NativePlayer
+import org.jellyfin.mobile.downloads.DownloadsViewModel
 import org.jellyfin.mobile.events.ActivityEventHandler
 import org.jellyfin.mobile.player.audio.car.LibraryBrowser
 import org.jellyfin.mobile.player.deviceprofile.DeviceProfileBuilder
@@ -34,11 +40,13 @@ import org.jellyfin.mobile.utils.isLowRamDevice
 import org.jellyfin.mobile.webapp.RemoteVolumeProvider
 import org.jellyfin.mobile.webapp.WebViewFragment
 import org.jellyfin.mobile.webapp.WebappFunctionChannel
+import org.jellyfin.sdk.model.serializer.toUUID
 import org.koin.android.ext.koin.androidApplication
 import org.koin.androidx.fragment.dsl.fragment
 import org.koin.androidx.viewmodel.dsl.viewModel
 import org.koin.core.qualifier.named
 import org.koin.dsl.module
+import java.io.File
 import java.util.concurrent.Executors
 
 const val PLAYER_EVENT_CHANNEL = "PlayerEventChannel"
@@ -65,6 +73,7 @@ val applicationModule = module {
 
     // ViewModels
     viewModel { MainViewModel(get(), get()) }
+    viewModel { DownloadsViewModel() }
 
     // Fragments
     fragment { WebViewFragment() }
@@ -79,7 +88,20 @@ val applicationModule = module {
     single { QualityOptionsProvider() }
 
     // ExoPlayer factories
-    single<DataSource.Factory> {
+    single<DatabaseProvider> {
+        val dbProvider = StandaloneDatabaseProvider(get<Context>())
+        dbProvider
+    }
+    single<Cache> {
+        val downloadPath = File(get<Context>().filesDir, Constants.DOWNLOAD_PATH)
+        if (!downloadPath.exists()) {
+            downloadPath.mkdirs()
+        }
+        val cache = SimpleCache(downloadPath, NoOpCacheEvictor(), get())
+        cache
+    }
+
+    single<DefaultDataSource.Factory> {
         val context: Context = get()
 
         val provider = CronetProvider.getAllProviders(context).firstOrNull { provider: CronetProvider ->
@@ -104,6 +126,31 @@ val applicationModule = module {
 
         DefaultDataSource.Factory(context, baseDataSourceFactory)
     }
+
+    single<CacheDataSource.Factory> {
+        // Create a read-only cache data source factory using the download cache.
+        CacheDataSource.Factory()
+            .setCache(get())
+            .setUpstreamDataSourceFactory(get<DefaultDataSource.Factory>())
+            .setFlags(CacheDataSource.FLAG_IGNORE_CACHE_ON_ERROR)
+            .setCacheWriteDataSinkFactory(null)
+            .setCacheKeyFactory { spec ->
+                val uri = spec.uri.toString()
+                val idRegex = Regex("""/([a-f0-9]{32}|[a-f0-9-]{36})/""")
+                val idResult = idRegex.find(uri)
+                val itemId = idResult?.groups?.get(1)?.value.toString()
+                var item = itemId.toUUID().toString()
+
+                val subtitleRegex = Regex("""Subtitles/(\d+)/\d+/Stream.subrip|/(\d+).subrip""")
+                val subtitleResult = subtitleRegex.find(uri)
+                if (subtitleResult != null) {
+                    item += ":${subtitleResult.groups[1]?.value ?: subtitleResult.groups[2]?.value}"
+                }
+
+                item
+            }
+    }
+
     single<MediaSource.Factory> {
         val context: Context = get()
         val extractorsFactory = DefaultExtractorsFactory().apply {
@@ -115,11 +162,11 @@ val applicationModule = module {
                 },
             )
         }
-        DefaultMediaSourceFactory(get<DataSource.Factory>(), extractorsFactory)
+        DefaultMediaSourceFactory(get<CacheDataSource.Factory>(), extractorsFactory)
     }
-    single { ProgressiveMediaSource.Factory(get()) }
-    single { HlsMediaSource.Factory(get<DataSource.Factory>()) }
-    single { SingleSampleMediaSource.Factory(get()) }
+    single { ProgressiveMediaSource.Factory(get<CacheDataSource.Factory>()) }
+    single { HlsMediaSource.Factory(get<CacheDataSource.Factory>()) }
+    single { SingleSampleMediaSource.Factory(get<CacheDataSource.Factory>()) }
 
     // Media components
     single { LibraryBrowser(get(), get()) }