Fix backup restoring

app/src/main/kotlin/org/koitharu/kotatsu/core/backup/BackupRepository.kt

@@ -73,7 +73,12 @@ class BackupRepository @Inject constructor(
 
 	fun dumpSettings(): BackupEntry {
 		val entry = BackupEntry(BackupEntry.SETTINGS, JSONArray())
-		val json = JsonSerializer(settings.getAllValues()).toJson()
+		val settingsDump = settings.getAllValues().toMutableMap()
+		settingsDump.remove(AppSettings.KEY_APP_PASSWORD)
+		settingsDump.remove(AppSettings.KEY_PROXY_PASSWORD)
+		settingsDump.remove(AppSettings.KEY_PROXY_LOGIN)
+		settingsDump.remove(AppSettings.KEY_INCOGNITO_MODE)
+		val json = JsonSerializer(settingsDump).toJson()
 		entry.data.put(json)
 		return entry
 	}
@@ -143,7 +148,7 @@ class BackupRepository @Inject constructor(
 		val result = CompositeResult()
 		for (item in entry.data.JSONIterator()) {
 			result += runCatchingCancellable {
-				settings.restoreValuesFromMap(JsonDeserializer(item).toMap())
+				settings.upsertAll(JsonDeserializer(item).toMap())
 			}
 		}
 		return result

app/src/main/kotlin/org/koitharu/kotatsu/core/backup/BackupZipInput.kt

@@ -11,8 +11,8 @@ class BackupZipInput(val file: File) : Closeable {
 
 	private val zipFile = ZipFile(file)
 
-	suspend fun getEntry(name: String): BackupEntry = runInterruptible(Dispatchers.IO) {
+	suspend fun getEntry(name: String): BackupEntry? = runInterruptible(Dispatchers.IO) {
-		val entry = zipFile.getEntry(name)
+		val entry = zipFile.getEntry(name) ?: return@runInterruptible null
 		val json = zipFile.getInputStream(entry).use {
 			JSONArray(it.bufferedReader().readText())
 		}

app/src/main/kotlin/org/koitharu/kotatsu/core/backup/CompositeResult.kt

@@ -11,6 +11,9 @@ class CompositeResult {
 	val failures: List<Throwable>
 		get() = errors.filterNotNull()
 
+	val isEmpty: Boolean
+		get() = errors.isEmpty() && successCount == 0
+
 	val isAllSuccess: Boolean
 		get() = errors.none { it != null }
 

app/src/main/kotlin/org/koitharu/kotatsu/core/prefs/AppSettings.kt

@@ -384,7 +384,7 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 
 	fun getAllValues(): Map<String, *> = prefs.all
 
-	fun restoreValuesFromMap(m: Map<String, *>) {
+	fun upsertAll(m: Map<String, *>) {
 		prefs.edit {
 			m.forEach { e ->
 				when (e.value) {

app/src/main/kotlin/org/koitharu/kotatsu/core/util/ext/String.kt

@@ -1,6 +1,5 @@
 package org.koitharu.kotatsu.core.util.ext
 
-import android.content.SharedPreferences
 import androidx.annotation.FloatRange
 import org.koitharu.kotatsu.parsers.util.levenshteinDistance
 import java.util.UUID
@@ -41,9 +40,3 @@ fun CharSequence.sanitize(): CharSequence {
 }
 
 fun Char.isReplacement() = this in '\uFFF0'..'\uFFFF'
-
-fun <E : Enum<E>> String.getEnumValue(defaultValue: E): E {
-	return defaultValue.javaClass.enumConstants?.find {
-		it.name == this
-	} ?: defaultValue
-}

app/src/main/kotlin/org/koitharu/kotatsu/settings/backup/AppBackupAgent.kt

@@ -14,7 +14,11 @@ import org.koitharu.kotatsu.core.backup.BackupZipInput
 import org.koitharu.kotatsu.core.backup.BackupZipOutput
 import org.koitharu.kotatsu.core.db.MangaDatabase
 import org.koitharu.kotatsu.core.prefs.AppSettings
-import java.io.*
+import java.io.File
+import java.io.FileDescriptor
+import java.io.FileInputStream
+import java.io.InputStream
+import java.io.OutputStream
 
 class AppBackupAgent : BackupAgent() {
 
@@ -81,10 +85,10 @@ class AppBackupAgent : BackupAgent() {
 		val backup = BackupZipInput(tempFile)
 		try {
 			runBlocking {
-				repository.restoreHistory(backup.getEntry(BackupEntry.HISTORY))
+				backup.getEntry(BackupEntry.HISTORY)?.let { repository.restoreHistory(it) }
-				repository.restoreCategories(backup.getEntry(BackupEntry.CATEGORIES))
+				backup.getEntry(BackupEntry.CATEGORIES)?.let { repository.restoreCategories(it) }
-				repository.restoreFavourites(backup.getEntry(BackupEntry.FAVOURITES))
+				backup.getEntry(BackupEntry.FAVOURITES)?.let { repository.restoreFavourites(it) }
-				repository.restoreSettings(backup.getEntry(BackupEntry.SETTINGS))
+				backup.getEntry(BackupEntry.SETTINGS)?.let { repository.restoreSettings(it) }
 			}
 		} finally {
 			backup.close()

app/src/main/kotlin/org/koitharu/kotatsu/settings/backup/RestoreDialogFragment.kt

@@ -68,6 +68,11 @@ class RestoreDialogFragment : AlertDialogFragment<DialogProgressBinding>() {
 	private fun onRestoreDone(result: CompositeResult) {
 		val builder = MaterialAlertDialogBuilder(context ?: return)
 		when {
+			result.isEmpty -> {
+				builder.setTitle(R.string.data_not_restored)
+					.setMessage(R.string.data_not_restored_text)
+			}
+
 			result.isAllSuccess -> {
 				builder.setTitle(R.string.data_restored)
 					.setMessage(R.string.data_restored_success)

app/src/main/kotlin/org/koitharu/kotatsu/settings/backup/RestoreViewModel.kt

@@ -48,16 +48,24 @@ class RestoreViewModel @Inject constructor(
 				val result = CompositeResult()
 
 				progress.value = 0f
-				result += repository.restoreHistory(backup.getEntry(BackupEntry.HISTORY))
+				backup.getEntry(BackupEntry.HISTORY)?.let {
+					result += repository.restoreHistory(it)
+				}
 
 				progress.value = 0.25f
-				result += repository.restoreCategories(backup.getEntry(BackupEntry.CATEGORIES))
+				backup.getEntry(BackupEntry.CATEGORIES)?.let {
+					result += repository.restoreCategories(it)
+				}
 
 				progress.value = 0.5f
-				result += repository.restoreFavourites(backup.getEntry(BackupEntry.FAVOURITES))
+				backup.getEntry(BackupEntry.FAVOURITES)?.let {
+					result += repository.restoreFavourites(it)
+				}
 
 				progress.value = 0.75f
-				result += repository.restoreSettings(backup.getEntry(BackupEntry.SETTINGS))
+				backup.getEntry(BackupEntry.SETTINGS)?.let {
+					result += repository.restoreSettings(it)
+				}
 
 				progress.value = 1f
 				onRestoreDone.call(result)

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

@@ -458,4 +458,6 @@
 	<string name="color_white">White</string>
 	<string name="color_black">Black</string>
 	<string name="background">Background</string>
+	<string name="data_not_restored">Data was not restored</string>
+	<string name="data_not_restored_text">Make sure you have selected the correct backup file</string>
 </resources>