Backup-restore fixes

app/src/main/AndroidManifest.xml

@@ -55,6 +55,7 @@
 		android:fullBackupContent="@xml/backup_content"
 		android:fullBackupOnly="true"
 		android:hasFragileUserData="true"
+		android:restoreAnyVersion="true"
 		android:icon="@mipmap/ic_launcher"
 		android:label="@string/app_name"
 		android:largeHeap="true"

app/src/main/kotlin/org/koitharu/kotatsu/backups/domain/AppBackupAgent.kt

@@ -36,8 +36,7 @@ class AppBackupAgent : BackupAgent() {
 
 	override fun onFullBackup(data: FullBackupDataOutput) {
 		super.onFullBackup(data)
-		val file =
+		val file = createBackupFile(
-			createBackupFile(
 			this,
 			BackupRepository(
 				MangaDatabase(context = applicationContext),
@@ -90,8 +89,12 @@ class AppBackupAgent : BackupAgent() {
 	@VisibleForTesting
 	fun restoreBackupFile(fd: FileDescriptor, size: Long, repository: BackupRepository) {
 		ZipInputStream(ByteStreams.limit(FileInputStream(fd), size)).use { input ->
+			val sections = EnumSet.allOf(BackupSection::class.java)
+			// managed externally
+			sections.remove(BackupSection.SETTINGS)
+			sections.remove(BackupSection.SETTINGS_READER_GRID)
 			runBlocking {
-				repository.restoreBackup(input, EnumSet.allOf(BackupSection::class.java), null)
+				repository.restoreBackup(input, sections, null)
 			}
 		}
 	}

app/src/main/kotlin/org/koitharu/kotatsu/backups/domain/BackupSection.kt

@@ -21,7 +21,7 @@ enum class BackupSection(
 
 		fun of(entry: ZipEntry): BackupSection? {
 			val name = entry.name.lowercase(Locale.ROOT)
-			return entries.first { x -> x.entryName == name }
+			return entries.find { x -> x.entryName == name }
 		}
 	}
 }

app/src/main/res/xml/backup_content.xml

@@ -3,4 +3,16 @@
 	<include
 		domain="sharedpref"
 		path="." />
+	<exclude
+		domain="sharedpref"
+		path="_local_index.xml" />
+	<exclude
+		domain="database"
+		path="." />
+	<exclude
+		domain="device_database"
+		path="." />
+	<exclude
+		domain="external"
+		path="." />
 </full-backup-content>

app/src/main/res/xml/backup_rules.xml

@@ -2,5 +2,15 @@
 <data-extraction-rules>
 	<cloud-backup disableIfNoEncryptionCapabilities="false">
 		<include domain="sharedpref" path="."/>
+		<exclude domain="sharedpref" path="_local_index.xml"/>
+		<exclude domain="database" path="." />
+		<exclude domain="device_database" path="." />
+		<exclude domain="external" path="." />
 	</cloud-backup>
+	<device-transfer>
+		<include domain="sharedpref" path="."/>
+		<exclude domain="sharedpref" path="_local_index.xml"/>
+		<exclude domain="database" path="." />
+		<exclude domain="device_database" path="." />
+	</device-transfer>
 </data-extraction-rules>