Fix crash and foreign key issue

app/src/main/java/org/koitharu/kotatsu/domain/MangaDataRepository.kt

@@ -14,13 +14,18 @@ class MangaDataRepository : KoinComponent {
 
 	private val db: MangaDatabase by inject()
 
-	suspend fun savePreferences(mangaId: Long, mode: ReaderMode) {
-		db.preferencesDao().upsert(
-			MangaPrefsEntity(
-				mangaId = mangaId,
-				mode = mode.id
+	suspend fun savePreferences(manga: Manga, mode: ReaderMode) {
+		val tags = manga.tags.map(TagEntity.Companion::fromMangaTag)
+		db.withTransaction {
+			db.tagsDao().upsert(tags)
+			db.mangaDao().upsert(MangaEntity.from(manga), tags)
+			db.preferencesDao().upsert(
+				MangaPrefsEntity(
+					mangaId = manga.id,
+					mode = mode.id
+				)
 			)
-		)
+		}
 	}
 
 	suspend fun getReaderMode(mangaId: Long): ReaderMode? {

app/src/main/java/org/koitharu/kotatsu/ui/main/list/MangaListFragment.kt

@@ -182,6 +182,9 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 	}
 
 	override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences, key: String) {
+		if (context == null) {
+			return
+		}
 		when (key) {
 			getString(R.string.key_list_mode) -> initListMode(settings.listMode)
 			getString(R.string.key_grid_size) -> UiUtils.SpanCountResolver.update(recyclerView)

app/src/main/java/org/koitharu/kotatsu/ui/reader/ReaderPresenter.kt

@@ -8,6 +8,7 @@ import moxy.presenterScope
 import okhttp3.OkHttpClient
 import okhttp3.Request
 import org.koin.core.get
+import org.koitharu.kotatsu.BuildConfig
 import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.core.model.MangaPage
 import org.koitharu.kotatsu.core.prefs.ReaderMode
@@ -39,7 +40,7 @@ class ReaderPresenter : BasePresenter<ReaderView>() {
 						mode = MangaUtils.determineReaderMode(pages)
 						if (mode != null) {
 							prefs.savePreferences(
-								mangaId = manga.id,
+								manga = manga,
 								mode = mode
 							)
 						}
@@ -49,6 +50,9 @@ class ReaderPresenter : BasePresenter<ReaderView>() {
 				viewState.onInitReader(manga, mode)
 			} catch (_: CancellationException) {
 			} catch (e: Throwable) {
+				if (BuildConfig.DEBUG) {
+					e.printStackTrace()
+				}
 				viewState.onError(e)
 			} finally {
 				viewState.onLoadingStateChanged(isLoading = false)
@@ -59,7 +63,7 @@ class ReaderPresenter : BasePresenter<ReaderView>() {
 	fun setMode(manga: Manga, mode: ReaderMode) {
 		presenterScope.launch(Dispatchers.IO) {
 			MangaDataRepository().savePreferences(
-				mangaId = manga.id,
+				manga = manga,
 				mode = mode
 			)
 		}