Backup & restore

database/src/main/java/de/mm20/launcher2/database/AppDatabase.kt

@@ -24,6 +24,7 @@ abstract class AppDatabase : RoomDatabase() {
     abstract fun iconDao(): IconDao
     abstract fun widgetDao(): WidgetDao
     abstract fun currencyDao(): CurrencyDao
+    abstract fun backupDao(): BackupRestoreDao
 
     companion object {
         private var _instance: AppDatabase? = null

database/src/main/java/de/mm20/launcher2/database/BackupRestoreDao.kt

@@ -0,0 +1,40 @@
+package de.mm20.launcher2.database
+
+import androidx.room.Dao
+import androidx.room.Insert
+import androidx.room.OnConflictStrategy
+import androidx.room.Query
+import de.mm20.launcher2.database.entities.FavoritesItemEntity
+import de.mm20.launcher2.database.entities.WebsearchEntity
+import de.mm20.launcher2.database.entities.WidgetEntity
+
+@Dao
+interface BackupRestoreDao {
+
+    @Query("DELETE FROM Searchable")
+    suspend fun wipeFavorites()
+
+    @Query("SELECT * FROM Searchable LIMIT :limit OFFSET :offset")
+    suspend fun exportFavorites(limit: Int, offset: Int): List<FavoritesItemEntity>
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun importFavorites(items: List<FavoritesItemEntity>)
+
+    @Query("DELETE FROM Widget")
+    suspend fun wipeWidgets()
+
+    @Query("SELECT * FROM Widget LIMIT :limit OFFSET :offset")
+    suspend fun exportWidgets(limit: Int, offset: Int): List<WidgetEntity>
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun importWidgets(items: List<WidgetEntity>)
+
+    @Query("DELETE FROM Websearch")
+    suspend fun wipeWebsearches()
+
+    @Query("SELECT * FROM Websearch LIMIT :limit OFFSET :offset")
+    suspend fun exportWebsearches(limit: Int, offset: Int): List<WebsearchEntity>
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun importWebsearches(items: List<WebsearchEntity>)
+}