Add support for migrating old Quasseldroid settings

Signed-off-by: Janne Koschinski <janne@kuschku.de>

lib/build.gradle.kts

@@ -36,28 +36,6 @@
  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-/*
- * Quasseldroid - Quassel client for Android
- *
- * Copyright (c) 2018 Janne Koschinski
- * Copyright (c) 2018 Ken Børge Viktil
- * Copyright (c) 2018 Magnus Fjell
- * Copyright (c) 2018 Martin Sandsmark
- * Copyright (c) 2018 The Quassel Project
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 3 as published
- * by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
 import org.gradle.api.Project
 import org.gradle.api.artifacts.ExternalModuleDependency
 import org.gradle.kotlin.dsl.*

malheur/build.gradle.kts

@@ -36,28 +36,6 @@
  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-/*
- * Quasseldroid - Quassel client for Android
- *
- * Copyright (c) 2018 Janne Koschinski
- * Copyright (c) 2018 Ken Børge Viktil
- * Copyright (c) 2018 Magnus Fjell
- * Copyright (c) 2018 Martin Sandsmark
- * Copyright (c) 2018 The Quassel Project
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 3 as published
- * by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
 plugins {
   id("com.android.library")
   kotlin("android")

persistence/src/main/java/de/kuschku/quasseldroid/persistence/AccountDatabase.kt

@@ -73,8 +73,7 @@ abstract class AccountDatabase : RoomDatabase() {
             database = Room.databaseBuilder(
               context.applicationContext,
               AccountDatabase::class.java, DATABASE_NAME
-            )
-              .build()
+            ).allowMainThreadQueries().build()
           }
         }
       }

persistence/src/main/java/de/kuschku/quasseldroid/persistence/LegacyAccountDatabase.kt

+/*
+ * Quasseldroid - Quassel client for Android
+ *
+ * Copyright (c) 2018 Janne Koschinski
+ * Copyright (c) 2018 The Quassel Project
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 3 as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package de.kuschku.quasseldroid.persistence
+
+import android.arch.persistence.db.SupportSQLiteDatabase
+import android.arch.persistence.room.*
+import android.arch.persistence.room.migration.Migration
+import android.content.Context
+
+@Database(entities = [(LegacyAccountDatabase.Account::class)], version = 4)
+abstract class LegacyAccountDatabase : RoomDatabase() {
+  abstract fun accounts(): AccountDao
+
+  @Entity
+  data class Account(
+    @PrimaryKey
+    var id: Long,
+    var host: String,
+    var port: Int,
+    var user: String,
+    var pass: String,
+    var name: String
+  )
+
+  @Dao
+  interface AccountDao {
+    @Query("SELECT * FROM account")
+    fun all(): List<Account>
+  }
+
+  object Creator {
+    private var database: LegacyAccountDatabase? = null
+
+    // For Singleton instantiation
+    private val LOCK = Any()
+
+    fun init(context: Context): LegacyAccountDatabase {
+      if (database == null) {
+        synchronized(LOCK) {
+          if (database == null) {
+            database = Room.databaseBuilder(
+              context.applicationContext,
+              LegacyAccountDatabase::class.java, DATABASE_NAME
+            ).addMigrations(
+              object : Migration(0, 1) {
+                override fun migrate(database: SupportSQLiteDatabase) {
+                  database.execSQL("DROP TABLE IF EXISTS cores")
+                  database.execSQL("create table cores (_id integer primary key autoincrement, name text not null, server text not null, port integer not null);")
+
+                  database.execSQL("DROP TABLE IF EXISTS user")
+                  database.execSQL("CREATE TABLE user(userid integer primary key autoincrement, username text not null, password text not null, coreid integer not null unique, foreign key(coreid) references cores(_id) ON DELETE CASCADE ON UPDATE CASCADE)")
+                }
+              },
+              object : Migration(1, 2) {
+                override fun migrate(database: SupportSQLiteDatabase) {
+                  database.execSQL("DROP TABLE IF EXISTS cores")
+                  database.execSQL("create table cores (_id integer primary key autoincrement, name text not null, server text not null, port integer not null);")
+
+                  database.execSQL("DROP TABLE IF EXISTS user")
+                  database.execSQL("CREATE TABLE user(userid integer primary key autoincrement, username text not null, password text not null, coreid integer not null unique, foreign key(coreid) references cores(_id) ON DELETE CASCADE ON UPDATE CASCADE)")
+                }
+              },
+              object : Migration(2, 3) {
+                override fun migrate(database: SupportSQLiteDatabase) = Unit
+              },
+              object : Migration(3, 4) {
+                override fun migrate(database: SupportSQLiteDatabase) {
+                  database.execSQL("CREATE TABLE IF NOT EXISTS `Account` (`id` INTEGER NOT NULL, `host` TEXT NOT NULL, `port` INTEGER NOT NULL, `user` TEXT NOT NULL, `pass` TEXT NOT NULL, `name` TEXT NOT NULL, PRIMARY KEY(`id`))")
+                  database.execSQL("INSERT INTO Account (id, host, port, user, pass, name) SELECT _id AS id, server, port, coalesce(username, ''), coalesce(password, ''), name FROM cores LEFT JOIN user ON user.coreid = cores._id")
+
+                  database.execSQL("DROP TABLE IF EXISTS cores")
+                  database.execSQL("DROP TABLE IF EXISTS user")
+                }
+              }
+            ).allowMainThreadQueries().build()
+          }
+        }
+      }
+      return database!!
+    }
+  }
+
+  companion object {
+    const val DATABASE_NAME = "data"
+  }
+}

viewmodel/build.gradle.kts

@@ -36,28 +36,6 @@
  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-/*
- * Quasseldroid - Quassel client for Android
- *
- * Copyright (c) 2018 Janne Koschinski
- * Copyright (c) 2018 Ken Børge Viktil
- * Copyright (c) 2018 Magnus Fjell
- * Copyright (c) 2018 Martin Sandsmark
- * Copyright (c) 2018 The Quassel Project
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 3 as published
- * by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
 plugins {
   id("com.android.library")
   kotlin("android")