modify database scheme

Signed-off-by: sowjanyakch <sowjanya.kch@gmail.com>

app/src/main/java/com/nextcloud/talk/data/source/local/Migrations.kt

@@ -69,6 +69,26 @@ object Migrations {
         }
     }
 
+    val MIGRATION_15_16 = object : Migration(15, 16) {
+        override fun migrate(db: SupportSQLiteDatabase) {
+            Log.i("Migrations", "Migrating 15 to 16")
+            addisImportant(db)
+        }
+    }
+
+    fun addisImportant(db: SupportSQLiteDatabase) {
+        try {
+            db.execSQL(
+                "ALTER TABLE Conversations " +
+                    "ADD COLUMN hasImportant INTEGER NOT NULL DEFAULT 0;"
+            )
+        } catch (e: SQLException) {
+            Log.i("Migrations", "Something went wrong when adding column hasImportant to table Conversations")
+        }
+    }
+
+
+
     fun migrateToRoom(db: SupportSQLiteDatabase) {
         db.execSQL(
             "CREATE TABLE User_new (" +

app/src/main/java/com/nextcloud/talk/data/source/local/TalkDatabase.kt

@@ -49,7 +49,7 @@ import java.util.Locale
         ChatMessageEntity::class,
         ChatBlockEntity::class
     ],
-    version = 15,
+    version = 16,
     autoMigrations = [
         AutoMigration(from = 9, to = 10)
     ],
@@ -117,7 +117,8 @@ abstract class TalkDatabase : RoomDatabase() {
                     Migrations.MIGRATION_11_12,
                     Migrations.MIGRATION_12_13,
                     Migrations.MIGRATION_13_14,
-                    Migrations.MIGRATION_14_15
+                    Migrations.MIGRATION_14_15,
+                    Migrations.MIGRATION_15_16
                 )
                 .allowMainThreadQueries()
                 .addCallback(