Allow creating backups of subscripton groups

app/src/main/java/com/github/libretube/db/dao/SubscriptionGroupsDao.kt

@@ -14,6 +14,9 @@ interface SubscriptionGroupsDao {
     @Insert(onConflict = OnConflictStrategy.REPLACE)
     suspend fun createGroup(subscriptionGroup: SubscriptionGroup)
 
+    @Insert
+    suspend fun insertAll(subscriptionGroups: List<SubscriptionGroup>)
+
     @Query("DELETE FROM subscriptionGroups WHERE name = :name")
     suspend fun deleteGroup(name: String)
 }

app/src/main/java/com/github/libretube/db/obj/SubscriptionGroup.kt

@@ -2,7 +2,9 @@ package com.github.libretube.db.obj
 
 import androidx.room.Entity
 import androidx.room.PrimaryKey
+import kotlinx.serialization.Serializable
 
+@Serializable
 @Entity(tableName = "subscriptionGroups")
 data class SubscriptionGroup(
     @PrimaryKey var name: String,

app/src/main/java/com/github/libretube/helpers/BackupHelper.kt

@@ -52,13 +52,14 @@ object BackupHelper {
         Database.localSubscriptionDao().insertAll(backupFile.localSubscriptions.orEmpty())
         Database.customInstanceDao().insertAll(backupFile.customInstances.orEmpty())
         Database.playlistBookmarkDao().insertAll(backupFile.playlistBookmarks.orEmpty())
+        Database.subscriptionGroupsDao().insertAll(backupFile.channelGroups.orEmpty())
 
         backupFile.localPlaylists?.forEach {
             Database.localPlaylistsDao().createPlaylist(it.playlist)
             val playlistId = Database.localPlaylistsDao().getAll().last().playlist.id
-            it.videos.forEach {
-                it.playlistId = playlistId
-                Database.localPlaylistsDao().addPlaylistVideo(it)
+            it.videos.forEach { playlistItem ->
+                playlistItem.playlistId = playlistId
+                Database.localPlaylistsDao().addPlaylistVideo(playlistItem)
             }
         }
 

app/src/main/java/com/github/libretube/obj/BackupFile.kt

@@ -5,6 +5,7 @@ import com.github.libretube.db.obj.LocalPlaylistWithVideos
 import com.github.libretube.db.obj.LocalSubscription
 import com.github.libretube.db.obj.PlaylistBookmark
 import com.github.libretube.db.obj.SearchHistoryItem
+import com.github.libretube.db.obj.SubscriptionGroup
 import com.github.libretube.db.obj.WatchHistoryItem
 import com.github.libretube.db.obj.WatchPosition
 import kotlinx.serialization.Serializable
@@ -18,5 +19,6 @@ data class BackupFile(
     var customInstances: List<CustomInstance>? = emptyList(),
     var playlistBookmarks: List<PlaylistBookmark>? = emptyList(),
     var localPlaylists: List<LocalPlaylistWithVideos>? = emptyList(),
-    var preferences: List<PreferenceItem>? = emptyList()
+    var preferences: List<PreferenceItem>? = emptyList(),
+    var channelGroups: List<SubscriptionGroup>? = emptyList()
 )

app/src/main/java/com/github/libretube/ui/dialogs/BackupDialog.kt

@@ -17,11 +17,11 @@ import kotlinx.serialization.json.JsonNull
 import kotlinx.serialization.json.JsonPrimitive
 
 class BackupDialog(
-    private val createBackupFile: (BackupFile) -> Unit
+    private val createBackupFile: (BackupFile) -> Unit,
 ) : DialogFragment() {
     sealed class BackupOption(
         @StringRes val name: Int,
-        val onSelected: suspend (BackupFile) -> Unit
+        val onSelected: suspend (BackupFile) -> Unit,
     ) {
         object WatchHistory : BackupOption(R.string.watch_history, onSelected = {
             it.watchHistory = Database.watchHistoryDao().getAll()
@@ -51,6 +51,10 @@ class BackupDialog(
             it.localPlaylists = Database.localPlaylistsDao().getAll()
         })
 
+        object SubscriptionGroups : BackupOption(R.string.channel_groups, onSelected = {
+            it.channelGroups = Database.subscriptionGroupsDao().getAll()
+        })
+
         object Preferences : BackupOption(R.string.preferences, onSelected = { file ->
             file.preferences = PreferenceHelper.settings.all.map { (key, value) ->
                 val jsonValue = when (value) {
@@ -73,7 +77,8 @@ class BackupDialog(
             BackupOption.CustomInstances,
             BackupOption.PlaylistBookmarks,
             BackupOption.LocalPlaylists,
-            BackupOption.Preferences
+            BackupOption.SubscriptionGroups,
+            BackupOption.Preferences,
         )
 
         val backupItems = backupOptions.map { context?.getString(it.name)!! }.toTypedArray()

app/src/main/res/values/strings.xml

@@ -460,7 +460,6 @@
     <string name="new_group">New</string>
     <string name="group_name">Group name</string>
     <string name="edit_group">Edit group</string>
-    <string name="group_already_exists">Group already exists!</string>
 
     <!-- Notification channel strings -->
     <string name="download_channel_name">Download Service</string>