Small fixes

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

@@ -9,8 +9,8 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.util.ext.printStackTraceDebug
 import org.koitharu.kotatsu.core.zip.ZipOutput
 import java.io.File
+import java.text.ParseException
 import java.text.SimpleDateFormat
-import java.time.format.DateTimeParseException
 import java.util.Date
 import java.util.Locale
 import java.util.zip.Deflater
@@ -46,7 +46,7 @@ class BackupZipOutput(val file: File) : Closeable {
 
 		fun parseBackupDateTime(fileName: String): Date? = try {
 			dateTimeFormat.parse(fileName.substringAfterLast('_').substringBefore('.'))
-		} catch (e: DateTimeParseException) {
+		} catch (e: ParseException) {
 			e.printStackTraceDebug()
 			null
 		}

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/pager/chapters/ChaptersSelectionCallback.kt

@@ -62,10 +62,12 @@ class ChaptersSelectionCallback(
 			R.id.action_save -> {
 				val snapshot = controller.snapshot()
 				mode?.finish()
-				commonAlertDialogs.askForDownloadOverMeteredNetwork(
+				if (snapshot.isNotEmpty()) {
-					context = recyclerView.context,
+					commonAlertDialogs.askForDownloadOverMeteredNetwork(
-					onConfirmed = { viewModel.download(snapshot, it) },
+						context = recyclerView.context,
-				)
+						onConfirmed = { viewModel.download(snapshot, it) },
+					)
+				}
 				true
 			}
 

app/src/main/kotlin/org/koitharu/kotatsu/download/ui/list/DownloadsViewModel.kt

@@ -25,7 +25,6 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.formatNumber
 import org.koitharu.kotatsu.core.parser.MangaDataRepository
 import org.koitharu.kotatsu.core.parser.MangaRepository
-import org.koitharu.kotatsu.core.parser.ParserMangaRepository
 import org.koitharu.kotatsu.core.ui.BaseViewModel
 import org.koitharu.kotatsu.core.ui.model.DateTimeAgo
 import org.koitharu.kotatsu.core.ui.util.ReversibleAction
@@ -327,6 +326,6 @@ class DownloadsViewModel @Inject constructor(
 	}.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, null)
 
 	private suspend fun tryLoad(manga: Manga) = runCatchingCancellable {
-		(mangaRepositoryFactory.create(manga.source) as ParserMangaRepository).getDetails(manga)
+		mangaRepositoryFactory.create(manga.source).getDetails(manga)
 	}.getOrNull()
 }