Action to open online version of saved manga

app/src/main/kotlin/org/koitharu/kotatsu/details/domain/DetailsInteractor.kt

@@ -86,4 +86,6 @@ class DetailsInteractor @Inject constructor(
 			subject
 		}
 	}
+
+	suspend fun findLocal(seed: Manga) = localMangaRepository.getRemoteManga(seed)
 }

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/DetailsActivity.kt

@@ -137,7 +137,9 @@ class DetailsActivity :
 			this,
 			MenuInvalidator(viewBinding.toolbarChapters ?: this),
 		)
-		viewModel.favouriteCategories.observe(this, MenuInvalidator(this))
+		val menuInvalidator = MenuInvalidator(this)
+		viewModel.favouriteCategories.observe(this, menuInvalidator)
+		viewModel.remoteManga.observe(this, menuInvalidator)
 		viewModel.branches.observe(this) {
 			viewBinding.buttonDropdown.isVisible = it.size > 1
 		}

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/DetailsMenuProvider.kt

@@ -42,6 +42,7 @@ class DetailsMenuProvider(
 		menu.findItem(R.id.action_browser).isVisible = manga?.source != MangaSource.LOCAL
 		menu.findItem(R.id.action_shortcut).isVisible = ShortcutManagerCompat.isRequestPinShortcutSupported(activity)
 		menu.findItem(R.id.action_scrobbling).isVisible = viewModel.isScrobblingAvailable
+		menu.findItem(R.id.action_online).isVisible = viewModel.remoteManga.value != null
 		menu.findItem(R.id.action_favourite).setIcon(
 			if (viewModel.favouriteCategories.value) R.drawable.ic_heart else R.drawable.ic_heart_outline,
 		)
@@ -88,6 +89,12 @@ class DetailsMenuProvider(
 				}
 			}
 
+			R.id.action_online -> {
+				viewModel.remoteManga.value?.let {
+					activity.startActivity(DetailsActivity.newIntent(activity, it))
+				}
+			}
+
 			R.id.action_related -> {
 				viewModel.manga.value?.let {
 					activity.startActivity(MultiSearchActivity.newIntent(activity, it.title))

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/DetailsViewModel.kt

@@ -94,6 +94,8 @@ class DetailsViewModel @Inject constructor(
 	val favouriteCategories = interactor.observeIsFavourite(mangaId)
 		.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, false)
 
+	val remoteManga = MutableStateFlow<Manga?>(null)
+
 	val newChaptersCount = details.flatMapLatest { d ->
 		if (d?.isLocal == false) {
 			interactor.observeNewChapters(mangaId)
@@ -213,6 +215,10 @@ class DetailsViewModel @Inject constructor(
 				progressUpdateUseCase(manga.toManga())
 			}
 		}
+		launchJob(Dispatchers.Default) {
+			val manga = details.firstOrNull { it != null && it.isLocal } ?: return@launchJob
+			remoteManga.value = interactor.findLocal(manga.toManga())
+		}
 	}
 
 	fun reload() {

app/src/main/kotlin/org/koitharu/kotatsu/local/data/input/LocalMangaDirInput.kt

@@ -40,13 +40,15 @@ class LocalMangaDirInput(root: File) : LocalMangaInput(root) {
 		val mangaUri = root.toUri().toString()
 		val chapterFiles = getChaptersFiles()
 		val info = index?.getMangaInfo()
+		val cover = fileUri(
+			root,
+			index?.getCoverEntry() ?: findFirstImageEntry().orEmpty(),
+		)
 		val manga = info?.copy2(
 			source = MangaSource.LOCAL,
 			url = mangaUri,
-			coverUrl = fileUri(
-				root,
-				index.getCoverEntry() ?: findFirstImageEntry().orEmpty(),
-			),
+			coverUrl = cover,
+			largeCoverUrl = cover,
 			chapters = info.chapters?.mapIndexed { i, c ->
 				c.copy(url = chapterFiles[i].toUri().toString(), source = MangaSource.LOCAL)
 			},

app/src/main/kotlin/org/koitharu/kotatsu/local/data/input/LocalMangaInput.kt

@@ -67,10 +67,11 @@ sealed class LocalMangaInput(
 
 		@JvmStatic
 		protected fun Manga.copy2(
-			url: String = this.url,
-			coverUrl: String = this.coverUrl,
-			chapters: List<MangaChapter>? = this.chapters,
-			source: MangaSource = this.source,
+			url: String,
+			coverUrl: String,
+			largeCoverUrl: String,
+			chapters: List<MangaChapter>?,
+			source: MangaSource,
 		) = Manga(
 			id = id,
 			title = title,
@@ -91,8 +92,8 @@ sealed class LocalMangaInput(
 
 		@JvmStatic
 		protected fun MangaChapter.copy(
-			url: String = this.url,
-			source: MangaSource = this.source,
+			url: String,
+			source: MangaSource,
 		) = MangaChapter(
 			id = id,
 			name = name,

app/src/main/kotlin/org/koitharu/kotatsu/local/data/input/LocalMangaZipInput.kt

@@ -41,14 +41,15 @@ class LocalMangaZipInput(root: File) : LocalMangaInput(root) {
 				val index = entry?.let(zip::readText)?.let(::MangaIndex)
 				val info = index?.getMangaInfo()
 				if (info != null) {
+					val cover = zipUri(
+						root,
+						entryName = index.getCoverEntry() ?: findFirstImageEntry(zip.entries())?.name.orEmpty(),
+					)
 					return@use info.copy2(
 						source = MangaSource.LOCAL,
 						url = fileUri,
-						coverUrl = zipUri(
-							root,
-							entryName = index.getCoverEntry()
-								?: findFirstImageEntry(zip.entries())?.name.orEmpty(),
-						),
+						coverUrl = cover,
+						largeCoverUrl = cover,
 						chapters = info.chapters?.map { c ->
 							c.copy(url = fileUri, source = MangaSource.LOCAL)
 						},

app/src/main/res/menu/opt_details.xml

@@ -43,6 +43,12 @@
 		android:title="@string/find_similar"
 		app:showAsAction="never" />
 
+	<item
+		android:id="@+id/action_online"
+		android:orderInCategory="50"
+		android:title="@string/online_variant"
+		app:showAsAction="never" />
+
 	<item
 		android:id="@+id/action_browser"
 		android:orderInCategory="50"

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

@@ -499,4 +499,5 @@
 	<string name="list_options">List options</string>
 	<string name="by_relevance">Relevance</string>
 	<string name="categories">Categories</string>
+	<string name="online_variant">Online variant</string>
 </resources>