Merge branch 'devel' into feature/nextgen

app/build.gradle

@@ -68,8 +68,11 @@ android {
 		disable 'MissingTranslation', 'PrivateResource', 'NotifyDataSetChanged'
 	}
 	testOptions {
-		unitTests.includeAndroidResources = true
+		unitTests.includeAndroidResources true
-		unitTests.returnDefaultValues = false
+		unitTests.returnDefaultValues false
+		kotlinOptions {
+			freeCompilerArgs += ['-opt-in=org.koitharu.kotatsu.parsers.InternalParsersApi']
+		}
 	}
 }
 afterEvaluate {
@@ -128,6 +131,7 @@ dependencies {
 	debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.9.1'
 
 	testImplementation 'junit:junit:4.13.2'
+	testImplementation 'org.json:json:20220320'
 	testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.4'
 
 	androidTestImplementation 'androidx.test:runner:1.4.0'

app/src/androidTest/assets/categories/simple.json

@@ -0,0 +1,8 @@
+{
+	"id": 4,
+	"title": "Read later",
+	"sortKey": 1,
+	"order": "NEWEST",
+	"createdAt": 1335906000000,
+	"isTrackingEnabled": true
+}

app/src/androidTest/assets/manga/header.json

@@ -0,0 +1,35 @@
+{
+	"id": -2096681732556647985,
+	"title": "Странствия Эманон",
+	"url": "/stranstviia_emanon",
+	"publicUrl": "https://readmanga.io/stranstviia_emanon",
+	"rating": 0.9400894,
+	"isNsfw": true,
+	"coverUrl": "https://staticrm.rmr.rocks/uploads/pics/01/12/559_p.jpg",
+	"tags": [
+		{
+			"title": "Сверхъестественное",
+			"key": "supernatural",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Сэйнэн",
+			"key": "seinen",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Повседневность",
+			"key": "slice_of_life",
+			"source": "READMANGA_RU"
+		},
+		{
+			"title": "Приключения",
+			"key": "adventure",
+			"source": "READMANGA_RU"
+		}
+	],
+	"state": "FINISHED",
+	"largeCoverUrl": "https://staticrm.rmr.rocks/uploads/pics/01/12/559_o.jpg",
+	"description": null,
+	"source": "READMANGA_RU"
+}

app/src/androidTest/java/org/koitharu/kotatsu/Instrumentation.kt

@@ -0,0 +1,9 @@
+package org.koitharu.kotatsu
+
+import android.app.Instrumentation
+import kotlin.coroutines.resume
+import kotlin.coroutines.suspendCoroutine
+
+suspend fun Instrumentation.awaitForIdle() = suspendCoroutine<Unit> { cont ->
+	waitForIdle { cont.resume(Unit) }
+}

app/src/androidTest/java/org/koitharu/kotatsu/SampleData.kt

@@ -0,0 +1,54 @@
+package org.koitharu.kotatsu
+
+import androidx.test.platform.app.InstrumentationRegistry
+import com.squareup.moshi.*
+import com.squareup.moshi.kotlin.reflect.KotlinJsonAdapterFactory
+import okio.buffer
+import okio.source
+import org.koitharu.kotatsu.core.model.FavouriteCategory
+import org.koitharu.kotatsu.parsers.model.Manga
+import java.util.*
+import kotlin.reflect.KClass
+
+object SampleData {
+
+	private val moshi = Moshi.Builder()
+		.add(DateAdapter())
+		.add(KotlinJsonAdapterFactory())
+		.build()
+
+	val manga: Manga = loadAsset("manga/header.json", Manga::class)
+
+	val mangaDetails: Manga = loadAsset("manga/full.json", Manga::class)
+
+	val tag = mangaDetails.tags.elementAt(2)
+
+	val chapter = checkNotNull(mangaDetails.chapters)[2]
+
+	val favouriteCategory: FavouriteCategory = loadAsset("categories/simple.json", FavouriteCategory::class)
+
+	fun <T : Any> loadAsset(name: String, cls: KClass<T>): T {
+		val assets = InstrumentationRegistry.getInstrumentation().context.assets
+		return assets.open(name).use {
+			moshi.adapter(cls.java).fromJson(it.source().buffer())
+		} ?: throw RuntimeException("Cannot read asset from json \"$name\"")
+	}
+
+	private class DateAdapter : JsonAdapter<Date>() {
+
+		@FromJson
+		override fun fromJson(reader: JsonReader): Date? {
+			val ms = reader.nextLong()
+			return if (ms == 0L) {
+				null
+			} else {
+				Date(ms)
+			}
+		}
+
+		@ToJson
+		override fun toJson(writer: JsonWriter, value: Date?) {
+			writer.value(value?.time ?: 0L)
+		}
+	}
+}

app/src/androidTest/java/org/koitharu/kotatsu/core/db/MangaDatabaseTest.kt

@@ -3,11 +3,12 @@ package org.koitharu.kotatsu.core.db
 import androidx.room.testing.MigrationTestHelper
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.platform.app.InstrumentationRegistry
-import java.io.IOException
 import org.junit.Rule
 import org.junit.Test
 import org.junit.runner.RunWith
 import org.koitharu.kotatsu.core.db.migrations.*
+import java.io.IOException
+import kotlin.test.assertEquals
 
 @RunWith(AndroidJUnit4::class)
 class MangaDatabaseTest {
@@ -21,17 +22,15 @@ class MangaDatabaseTest {
 	@Test
 	@Throws(IOException::class)
 	fun migrateAll() {
-		helper.createDatabase(TEST_DB, 1).apply {
+		assertEquals(DATABASE_VERSION, migrations.last().endVersion)
-			// TODO execSQL("")
+		helper.createDatabase(TEST_DB, 1).close()
-			close()
-		}
 		for (migration in migrations) {
 			helper.runMigrationsAndValidate(
 				TEST_DB,
 				migration.endVersion,
 				true,
 				migration
-			)
+			).close()
 		}
 	}
 
@@ -50,6 +49,8 @@ class MangaDatabaseTest {
 			Migration8To9(),
 			Migration9To10(),
 			Migration10To11(),
+			Migration11To12(),
+			Migration12To13(),
 		)
 	}
 }

app/src/androidTest/java/org/koitharu/kotatsu/core/os/ShortcutsUpdaterTest.kt

@@ -0,0 +1,65 @@
+package org.koitharu.kotatsu.core.os
+
+import android.content.pm.ShortcutInfo
+import android.content.pm.ShortcutManager
+import androidx.core.content.getSystemService
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.platform.app.InstrumentationRegistry
+import kotlinx.coroutines.test.runTest
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.koin.test.KoinTest
+import org.koin.test.inject
+import org.koitharu.kotatsu.SampleData
+import org.koitharu.kotatsu.awaitForIdle
+import org.koitharu.kotatsu.core.db.MangaDatabase
+import org.koitharu.kotatsu.history.domain.HistoryRepository
+import kotlin.test.assertEquals
+import kotlin.test.assertTrue
+
+@RunWith(AndroidJUnit4::class)
+class ShortcutsUpdaterTest : KoinTest {
+
+	private val historyRepository by inject<HistoryRepository>()
+	private val shortcutsUpdater by inject<ShortcutsUpdater>()
+	private val database by inject<MangaDatabase>()
+
+	@Before
+	fun setUp() {
+		database.clearAllTables()
+	}
+
+	@Test
+	fun testUpdateShortcuts() = runTest {
+		awaitUpdate()
+		assertTrue(getShortcuts().isEmpty())
+		historyRepository.addOrUpdate(
+			manga = SampleData.manga,
+			chapterId = SampleData.chapter.id,
+			page = 4,
+			scroll = 2,
+			percent = 0.3f
+		)
+		awaitUpdate()
+
+		val shortcuts = getShortcuts()
+		assertEquals(1, shortcuts.size)
+	}
+
+	private fun getShortcuts(): List<ShortcutInfo> {
+		val context = InstrumentationRegistry.getInstrumentation().targetContext
+		val manager = checkNotNull(context.getSystemService<ShortcutManager>())
+		return manager.dynamicShortcuts.filterNot { it.id == "com.squareup.leakcanary.dynamic_shortcut" }
+	}
+
+	private suspend fun awaitUpdate() {
+		val instrumentation = InstrumentationRegistry.getInstrumentation()
+		while (true) {
+			instrumentation.awaitForIdle()
+			if (shortcutsUpdater.await()) {
+				return
+			}
+		}
+	}
+}

app/src/androidTest/java/org/koitharu/kotatsu/settings/backup/AppBackupAgentTest.kt

@@ -0,0 +1,67 @@
+package org.koitharu.kotatsu.settings.backup
+
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import kotlinx.coroutines.test.runTest
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.koin.test.KoinTest
+import org.koin.test.get
+import org.koin.test.inject
+import org.koitharu.kotatsu.SampleData
+import org.koitharu.kotatsu.core.backup.BackupRepository
+import org.koitharu.kotatsu.core.db.MangaDatabase
+import org.koitharu.kotatsu.core.db.entity.toMangaTags
+import org.koitharu.kotatsu.favourites.domain.FavouritesRepository
+import org.koitharu.kotatsu.history.domain.HistoryRepository
+import kotlin.test.*
+
+@RunWith(AndroidJUnit4::class)
+class AppBackupAgentTest : KoinTest {
+
+	private val historyRepository by inject<HistoryRepository>()
+	private val favouritesRepository by inject<FavouritesRepository>()
+	private val backupRepository by inject<BackupRepository>()
+	private val database by inject<MangaDatabase>()
+
+	@Before
+	fun setUp() {
+		database.clearAllTables()
+	}
+
+	@Test
+	fun testBackupRestore() = runTest {
+		val category = favouritesRepository.createCategory(
+			title = SampleData.favouriteCategory.title,
+			sortOrder = SampleData.favouriteCategory.order,
+			isTrackerEnabled = SampleData.favouriteCategory.isTrackingEnabled,
+		)
+		favouritesRepository.addToCategory(categoryId = category.id, mangas = listOf(SampleData.manga))
+		historyRepository.addOrUpdate(
+			manga = SampleData.mangaDetails,
+			chapterId = SampleData.mangaDetails.chapters!![2].id,
+			page = 3,
+			scroll = 40,
+			percent = 0.2f,
+		)
+		val history = checkNotNull(historyRepository.getOne(SampleData.manga))
+
+		val agent = AppBackupAgent()
+		val backup = agent.createBackupFile(get(), backupRepository)
+
+		database.clearAllTables()
+		assertTrue(favouritesRepository.getAllManga().isEmpty())
+		assertNull(historyRepository.getLastOrNull())
+
+		backup.inputStream().use {
+			agent.restoreBackupFile(it.fd, backup.length(), backupRepository)
+		}
+
+		assertEquals(category, favouritesRepository.getCategory(category.id))
+		assertEquals(history, historyRepository.getOne(SampleData.manga))
+		assertContentEquals(listOf(SampleData.manga), favouritesRepository.getManga(category.id))
+
+		val allTags = database.tagsDao.findTags(SampleData.tag.source.name).toMangaTags()
+		assertContains(allTags, SampleData.tag)
+	}
+}

app/src/androidTest/java/org/koitharu/kotatsu/tracker/domain/TrackerTest.kt

@@ -1,29 +1,21 @@
 package org.koitharu.kotatsu.tracker.domain
 
 import androidx.test.ext.junit.runners.AndroidJUnit4
-import androidx.test.platform.app.InstrumentationRegistry
-import com.squareup.moshi.Moshi
-import com.squareup.moshi.kotlin.reflect.KotlinJsonAdapterFactory
-import kotlin.test.assertEquals
-import kotlin.test.assertFalse
-import kotlin.test.assertTrue
 import kotlinx.coroutines.test.runTest
-import okio.buffer
-import okio.source
 import org.junit.Test
 import org.junit.runner.RunWith
 import org.koin.test.KoinTest
 import org.koin.test.inject
+import org.koitharu.kotatsu.SampleData
 import org.koitharu.kotatsu.base.domain.MangaDataRepository
-import org.koitharu.kotatsu.history.domain.HistoryRepository
 import org.koitharu.kotatsu.parsers.model.Manga
+import kotlin.test.assertEquals
+import kotlin.test.assertFalse
+import kotlin.test.assertTrue
 
 @RunWith(AndroidJUnit4::class)
 class TrackerTest : KoinTest {
 
-	private val moshi = Moshi.Builder().add(KotlinJsonAdapterFactory()).build()
-	private val mangaAdapter = moshi.adapter(Manga::class.java)
-	private val historyRegistry by inject<HistoryRepository>()
 	private val repository by inject<TrackingRepository>()
 	private val dataRepository by inject<MangaDataRepository>()
 	private val tracker by inject<Tracker>()
@@ -178,10 +170,7 @@ class TrackerTest : KoinTest {
 	}
 
 	private suspend fun loadManga(name: String): Manga {
-		val assets = InstrumentationRegistry.getInstrumentation().context.assets
+		val manga = SampleData.loadAsset("manga/$name", Manga::class)
-		val manga = assets.open("manga/$name").use {
-			mangaAdapter.fromJson(it.source().buffer())
-		} ?: throw RuntimeException("Cannot read manga from json \"$name\"")
 		dataRepository.storeManga(manga)
 		return manga
 	}

app/src/main/java/org/koitharu/kotatsu/KotatsuApp.kt

@@ -5,16 +5,18 @@ import android.content.Context
 import android.os.StrictMode
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.fragment.app.strictmode.FragmentStrictMode
+import androidx.room.InvalidationTracker
 import org.acra.ReportField
 import org.acra.config.dialog
 import org.acra.config.mailSender
 import org.acra.data.StringFormat
 import org.acra.ktx.initAcra
 import org.koin.android.ext.android.get
+import org.koin.android.ext.android.getKoin
 import org.koin.android.ext.koin.androidContext
 import org.koin.core.context.startKoin
-import org.koitharu.kotatsu.base.ui.util.ActivityRecreationHandle
 import org.koitharu.kotatsu.bookmarks.bookmarksModule
+import org.koitharu.kotatsu.core.db.MangaDatabase
 import org.koitharu.kotatsu.core.db.databaseModule
 import org.koitharu.kotatsu.core.github.githubModule
 import org.koitharu.kotatsu.core.network.networkModule
@@ -29,7 +31,6 @@ import org.koitharu.kotatsu.local.data.PagesCache
 import org.koitharu.kotatsu.local.domain.LocalMangaRepository
 import org.koitharu.kotatsu.local.localModule
 import org.koitharu.kotatsu.main.mainModule
-import org.koitharu.kotatsu.main.ui.protect.AppProtectHelper
 import org.koitharu.kotatsu.parsers.MangaLoaderContext
 import org.koitharu.kotatsu.reader.readerModule
 import org.koitharu.kotatsu.remotelist.remoteListModule
@@ -38,7 +39,6 @@ import org.koitharu.kotatsu.search.searchModule
 import org.koitharu.kotatsu.settings.settingsModule
 import org.koitharu.kotatsu.suggestions.suggestionsModule
 import org.koitharu.kotatsu.tracker.trackerModule
-import org.koitharu.kotatsu.widget.WidgetUpdater
 import org.koitharu.kotatsu.widget.appWidgetModule
 
 class KotatsuApp : Application() {
@@ -50,11 +50,8 @@ class KotatsuApp : Application() {
 		}
 		initKoin()
 		AppCompatDelegate.setDefaultNightMode(get<AppSettings>().theme)
-		registerActivityLifecycleCallbacks(get<AppProtectHelper>())
+		setupActivityLifecycleCallbacks()
-		registerActivityLifecycleCallbacks(get<ActivityRecreationHandle>())
+		setupDatabaseObservers()
-		val widgetUpdater = WidgetUpdater(applicationContext)
-		widgetUpdater.subscribeToFavourites(get())
-		widgetUpdater.subscribeToHistory(get())
 	}
 
 	private fun initKoin() {
@@ -116,6 +113,22 @@ class KotatsuApp : Application() {
 		}
 	}
 
+	private fun setupDatabaseObservers() {
+		val observers = getKoin().getAll<InvalidationTracker.Observer>()
+		val database = get<MangaDatabase>()
+		val tracker = database.invalidationTracker
+		observers.forEach {
+			tracker.addObserver(it)
+		}
+	}
+
+	private fun setupActivityLifecycleCallbacks() {
+		val callbacks = getKoin().getAll<ActivityLifecycleCallbacks>()
+		callbacks.forEach {
+			registerActivityLifecycleCallbacks(it)
+		}
+	}
+
 	private fun enableStrictMode() {
 		StrictMode.setThreadPolicy(
 			StrictMode.ThreadPolicy.Builder()

app/src/main/java/org/koitharu/kotatsu/bookmarks/data/BookmarkEntity.kt

@@ -17,7 +17,7 @@ import org.koitharu.kotatsu.core.db.entity.MangaEntity
 		),
 	]
 )
-class BookmarkEntity(
+data class BookmarkEntity(
 	@ColumnInfo(name = "manga_id", index = true) val mangaId: Long,
 	@ColumnInfo(name = "page_id", index = true) val pageId: Long,
 	@ColumnInfo(name = "chapter_id") val chapterId: Long,

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

@@ -1,14 +1,12 @@
 package org.koitharu.kotatsu.core.backup
 
+import androidx.room.withTransaction
 import org.json.JSONArray
 import org.json.JSONObject
 import org.koitharu.kotatsu.BuildConfig
 import org.koitharu.kotatsu.core.db.MangaDatabase
-import org.koitharu.kotatsu.core.db.entity.MangaEntity
+import org.koitharu.kotatsu.parsers.util.json.JSONIterator
-import org.koitharu.kotatsu.core.db.entity.TagEntity
+import org.koitharu.kotatsu.parsers.util.json.mapJSON
-import org.koitharu.kotatsu.favourites.data.FavouriteCategoryEntity
-import org.koitharu.kotatsu.favourites.data.FavouriteEntity
-import org.koitharu.kotatsu.history.data.HistoryEntity
 
 private const val PAGE_SIZE = 10
 
@@ -24,11 +22,11 @@ class BackupRepository(private val db: MangaDatabase) {
 			}
 			offset += history.size
 			for (item in history) {
-				val manga = item.manga.toJson()
+				val manga = JsonSerializer(item.manga).toJson()
 				val tags = JSONArray()
-				item.tags.forEach { tags.put(it.toJson()) }
+				item.tags.forEach { tags.put(JsonSerializer(it).toJson()) }
 				manga.put("tags", tags)
-				val json = item.history.toJson()
+				val json = JsonSerializer(item.history).toJson()
 				json.put("manga", manga)
 				entry.data.put(json)
 			}
@@ -40,7 +38,7 @@ class BackupRepository(private val db: MangaDatabase) {
 		val entry = BackupEntry(BackupEntry.CATEGORIES, JSONArray())
 		val categories = db.favouriteCategoriesDao.findAll()
 		for (item in categories) {
-			entry.data.put(item.toJson())
+			entry.data.put(JsonSerializer(item).toJson())
 		}
 		return entry
 	}
@@ -55,11 +53,11 @@ class BackupRepository(private val db: MangaDatabase) {
 			}
 			offset += favourites.size
 			for (item in favourites) {
-				val manga = item.manga.toJson()
+				val manga = JsonSerializer(item.manga).toJson()
 				val tags = JSONArray()
-				item.tags.forEach { tags.put(it.toJson()) }
+				item.tags.forEach { tags.put(JsonSerializer(it).toJson()) }
 				manga.put("tags", tags)
-				val json = item.favourite.toJson()
+				val json = JsonSerializer(item.favourite).toJson()
 				json.put("manga", manga)
 				entry.data.put(json)
 			}
@@ -77,62 +75,54 @@ class BackupRepository(private val db: MangaDatabase) {
 		return entry
 	}
 
-	private fun MangaEntity.toJson(): JSONObject {
+	suspend fun restoreHistory(entry: BackupEntry): CompositeResult {
-		val jo = JSONObject()
+		val result = CompositeResult()
-		jo.put("id", id)
+		for (item in entry.data.JSONIterator()) {
-		jo.put("title", title)
+			val mangaJson = item.getJSONObject("manga")
-		jo.put("alt_title", altTitle)
+			val manga = JsonDeserializer(mangaJson).toMangaEntity()
-		jo.put("url", url)
+			val tags = mangaJson.getJSONArray("tags").mapJSON {
-		jo.put("public_url", publicUrl)
+				JsonDeserializer(it).toTagEntity()
-		jo.put("rating", rating)
+			}
-		jo.put("nsfw", isNsfw)
+			val history = JsonDeserializer(item).toHistoryEntity()
-		jo.put("cover_url", coverUrl)
+			result += runCatching {
-		jo.put("large_cover_url", largeCoverUrl)
+				db.withTransaction {
-		jo.put("state", state)
+					db.tagsDao.upsert(tags)
-		jo.put("author", author)
+					db.mangaDao.upsert(manga, tags)
-		jo.put("source", source)
+					db.historyDao.upsert(history)
-		return jo
+				}
+			}
+		}
+		return result
 	}
 
-	private fun TagEntity.toJson(): JSONObject {
+	suspend fun restoreCategories(entry: BackupEntry): CompositeResult {
-		val jo = JSONObject()
+		val result = CompositeResult()
-		jo.put("id", id)
+		for (item in entry.data.JSONIterator()) {
-		jo.put("title", title)
+			val category = JsonDeserializer(item).toFavouriteCategoryEntity()
-		jo.put("key", key)
+			result += runCatching {
-		jo.put("source", source)
+				db.favouriteCategoriesDao.upsert(category)
-		return jo
+			}
+		}
+		return result
 	}
 
-	private fun HistoryEntity.toJson(): JSONObject {
+	suspend fun restoreFavourites(entry: BackupEntry): CompositeResult {
-		val jo = JSONObject()
+		val result = CompositeResult()
-		jo.put("manga_id", mangaId)
+		for (item in entry.data.JSONIterator()) {
-		jo.put("created_at", createdAt)
+			val mangaJson = item.getJSONObject("manga")
-		jo.put("updated_at", updatedAt)
+			val manga = JsonDeserializer(mangaJson).toMangaEntity()
-		jo.put("chapter_id", chapterId)
+			val tags = mangaJson.getJSONArray("tags").mapJSON {
-		jo.put("page", page)
+				JsonDeserializer(it).toTagEntity()
-		jo.put("scroll", scroll)
+			}
-		jo.put("percent", percent)
+			val favourite = JsonDeserializer(item).toFavouriteEntity()
-		return jo
+			result += runCatching {
-	}
+				db.withTransaction {
-
+					db.tagsDao.upsert(tags)
-	private fun FavouriteCategoryEntity.toJson(): JSONObject {
+					db.mangaDao.upsert(manga, tags)
-		val jo = JSONObject()
+					db.favouritesDao.upsert(favourite)
-		jo.put("category_id", categoryId)
+				}
-		jo.put("created_at", createdAt)
+			}
-		jo.put("sort_key", sortKey)
+		}
-		jo.put("title", title)
+		return result
-		jo.put("order", order)
-		jo.put("track", track)
-		jo.put("show_in_lib", isVisibleInLibrary)
-		return jo
-	}
-
-	private fun FavouriteEntity.toJson(): JSONObject {
-		val jo = JSONObject()
-		jo.put("manga_id", mangaId)
-		jo.put("category_id", categoryId)
-		jo.put("created_at", createdAt)
-		jo.put("sort_key", sortKey)
-		return jo
 	}
 }

app/src/main/java/org/koitharu/kotatsu/core/backup/JsonDeserializer.kt

@@ -1,70 +1,27 @@
 package org.koitharu.kotatsu.core.backup
 
-import androidx.room.withTransaction
 import org.json.JSONObject
-import org.koitharu.kotatsu.core.db.MangaDatabase
 import org.koitharu.kotatsu.core.db.entity.MangaEntity
 import org.koitharu.kotatsu.core.db.entity.TagEntity
 import org.koitharu.kotatsu.favourites.data.FavouriteCategoryEntity
 import org.koitharu.kotatsu.favourites.data.FavouriteEntity
 import org.koitharu.kotatsu.history.data.HistoryEntity
 import org.koitharu.kotatsu.parsers.model.SortOrder
-import org.koitharu.kotatsu.parsers.util.json.*
+import org.koitharu.kotatsu.parsers.util.json.getBooleanOrDefault
+import org.koitharu.kotatsu.parsers.util.json.getFloatOrDefault
+import org.koitharu.kotatsu.parsers.util.json.getIntOrDefault
+import org.koitharu.kotatsu.parsers.util.json.getStringOrNull
 
-class RestoreRepository(private val db: MangaDatabase) {
+class JsonDeserializer(private val json: JSONObject) {
 
-	suspend fun upsertHistory(entry: BackupEntry): CompositeResult {
+	fun toFavouriteEntity() = FavouriteEntity(
-		val result = CompositeResult()
+		mangaId = json.getLong("manga_id"),
-		for (item in entry.data.JSONIterator()) {
+		categoryId = json.getLong("category_id"),
-			val mangaJson = item.getJSONObject("manga")
+		sortKey = json.getIntOrDefault("sort_key", 0),
-			val manga = parseManga(mangaJson)
+		createdAt = json.getLong("created_at"),
-			val tags = mangaJson.getJSONArray("tags").mapJSON {
+	)
-				parseTag(it)
-			}
-			val history = parseHistory(item)
-			result += runCatching {
-				db.withTransaction {
-					db.tagsDao.upsert(tags)
-					db.mangaDao.upsert(manga, tags)
-					db.historyDao.upsert(history)
-				}
-			}
-		}
-		return result
-	}
 
-	suspend fun upsertCategories(entry: BackupEntry): CompositeResult {
+	fun toMangaEntity() = MangaEntity(
-		val result = CompositeResult()
-		for (item in entry.data.JSONIterator()) {
-			val category = parseCategory(item)
-			result += runCatching {
-				db.favouriteCategoriesDao.upsert(category)
-			}
-		}
-		return result
-	}
-
-	suspend fun upsertFavourites(entry: BackupEntry): CompositeResult {
-		val result = CompositeResult()
-		for (item in entry.data.JSONIterator()) {
-			val mangaJson = item.getJSONObject("manga")
-			val manga = parseManga(mangaJson)
-			val tags = mangaJson.getJSONArray("tags").mapJSON {
-				parseTag(it)
-			}
-			val favourite = parseFavourite(item)
-			result += runCatching {
-				db.withTransaction {
-					db.tagsDao.upsert(tags)
-					db.mangaDao.upsert(manga, tags)
-					db.favouritesDao.upsert(favourite)
-				}
-			}
-		}
-		return result
-	}
-
-	private fun parseManga(json: JSONObject) = MangaEntity(
 		id = json.getLong("id"),
 		title = json.getString("title"),
 		altTitle = json.getStringOrNull("alt_title"),
@@ -79,14 +36,14 @@ class RestoreRepository(private val db: MangaDatabase) {
 		source = json.getString("source")
 	)
 
-	private fun parseTag(json: JSONObject) = TagEntity(
+	fun toTagEntity() = TagEntity(
 		id = json.getLong("id"),
 		title = json.getString("title"),
 		key = json.getString("key"),
 		source = json.getString("source")
 	)
 
-	private fun parseHistory(json: JSONObject) = HistoryEntity(
+	fun toHistoryEntity() = HistoryEntity(
 		mangaId = json.getLong("manga_id"),
 		createdAt = json.getLong("created_at"),
 		updatedAt = json.getLong("updated_at"),
@@ -96,7 +53,7 @@ class RestoreRepository(private val db: MangaDatabase) {
 		percent = json.getFloatOrDefault("percent", -1f),
 	)
 
-	private fun parseCategory(json: JSONObject) = FavouriteCategoryEntity(
+	fun toFavouriteCategoryEntity() = FavouriteCategoryEntity(
 		categoryId = json.getInt("category_id"),
 		createdAt = json.getLong("created_at"),
 		sortKey = json.getInt("sort_key"),
@@ -105,11 +62,4 @@ class RestoreRepository(private val db: MangaDatabase) {
 		track = json.getBooleanOrDefault("track", true),
 		isVisibleInLibrary = json.getBooleanOrDefault("show_in_lib", true),
 	)
-
-	private fun parseFavourite(json: JSONObject) = FavouriteEntity(
-		mangaId = json.getLong("manga_id"),
-		categoryId = json.getLong("category_id"),
-		createdAt = json.getLong("created_at"),
-		sortKey = json.getIntOrDefault("sort_key", 0),
-	)
 }

app/src/main/java/org/koitharu/kotatsu/core/backup/JsonSerializer.kt

@@ -0,0 +1,72 @@
+package org.koitharu.kotatsu.core.backup
+
+import org.json.JSONObject
+import org.koitharu.kotatsu.core.db.entity.MangaEntity
+import org.koitharu.kotatsu.core.db.entity.TagEntity
+import org.koitharu.kotatsu.favourites.data.FavouriteCategoryEntity
+import org.koitharu.kotatsu.favourites.data.FavouriteEntity
+import org.koitharu.kotatsu.history.data.HistoryEntity
+
+class JsonSerializer private constructor(private val json: JSONObject) {
+
+	constructor(e: FavouriteEntity) : this(
+		JSONObject().apply {
+			put("manga_id", e.mangaId)
+			put("category_id", e.categoryId)
+			put("sort_key", e.sortKey)
+			put("created_at", e.createdAt)
+		}
+	)
+
+	constructor(e: FavouriteCategoryEntity) : this(
+		JSONObject().apply {
+			put("category_id", e.categoryId)
+			put("created_at", e.createdAt)
+			put("sort_key", e.sortKey)
+			put("title", e.title)
+			put("order", e.order)
+			put("track", e.track)
+			put("show_in_lib", e.isVisibleInLibrary)
+		}
+	)
+
+	constructor(e: HistoryEntity) : this(
+		JSONObject().apply {
+			put("manga_id", e.mangaId)
+			put("created_at", e.createdAt)
+			put("updated_at", e.updatedAt)
+			put("chapter_id", e.chapterId)
+			put("page", e.page)
+			put("scroll", e.scroll)
+			put("percent", e.percent)
+		}
+	)
+
+	constructor(e: TagEntity) : this(
+		JSONObject().apply {
+			put("id", e.id)
+			put("title", e.title)
+			put("key", e.key)
+			put("source", e.source)
+		}
+	)
+
+	constructor(e: MangaEntity) : this(
+		JSONObject().apply {
+			put("id", e.id)
+			put("title", e.title)
+			put("alt_title", e.altTitle)
+			put("url", e.url)
+			put("public_url", e.publicUrl)
+			put("rating", e.rating)
+			put("nsfw", e.isNsfw)
+			put("cover_url", e.coverUrl)
+			put("large_cover_url", e.largeCoverUrl)
+			put("state", e.state)
+			put("author", e.author)
+			put("source", e.source)
+		}
+	)
+
+	fun toJson(): JSONObject = json
+}

app/src/main/java/org/koitharu/kotatsu/core/db/MangaDatabase.kt

@@ -29,6 +29,8 @@ import org.koitharu.kotatsu.tracker.data.TrackEntity
 import org.koitharu.kotatsu.tracker.data.TrackLogEntity
 import org.koitharu.kotatsu.tracker.data.TracksDao
 
+const val DATABASE_VERSION = 13
+
 @Database(
 	entities = [
 		MangaEntity::class, TagEntity::class, HistoryEntity::class, MangaTagsEntity::class,
@@ -36,7 +38,7 @@ import org.koitharu.kotatsu.tracker.data.TracksDao
 		TrackEntity::class, TrackLogEntity::class, SuggestionEntity::class, BookmarkEntity::class,
 		ScrobblingEntity::class,
 	],
-	version = 13,
+	version = DATABASE_VERSION,
 )
 abstract class MangaDatabase : RoomDatabase() {
 

app/src/main/java/org/koitharu/kotatsu/core/db/Tables.kt

@@ -0,0 +1,9 @@
+package org.koitharu.kotatsu.core.db
+
+
+const val TABLE_FAVOURITES = "favourites"
+const val TABLE_MANGA = "manga"
+const val TABLE_TAGS = "tags"
+const val TABLE_FAVOURITE_CATEGORIES = "favourite_categories"
+const val TABLE_HISTORY = "history"
+const val TABLE_MANGA_TAGS = "manga_tags"

app/src/main/java/org/koitharu/kotatsu/core/db/entity/MangaEntity.kt

@@ -3,9 +3,10 @@ package org.koitharu.kotatsu.core.db.entity
 import androidx.room.ColumnInfo
 import androidx.room.Entity
 import androidx.room.PrimaryKey
+import org.koitharu.kotatsu.core.db.TABLE_MANGA
 
-@Entity(tableName = "manga")
+@Entity(tableName = TABLE_MANGA)
-class MangaEntity(
+data class MangaEntity(
 	@PrimaryKey(autoGenerate = false)
 	@ColumnInfo(name = "manga_id") val id: Long,
 	@ColumnInfo(name = "title") val title: String,
@@ -18,44 +19,5 @@ class MangaEntity(
 	@ColumnInfo(name = "large_cover_url") val largeCoverUrl: String?,
 	@ColumnInfo(name = "state") val state: String?,
 	@ColumnInfo(name = "author") val author: String?,
-	@ColumnInfo(name = "source") val source: String
+	@ColumnInfo(name = "source") val source: String,
-) {
+)
-
-	override fun equals(other: Any?): Boolean {
-		if (this === other) return true
-		if (javaClass != other?.javaClass) return false
-
-		other as MangaEntity
-
-		if (id != other.id) return false
-		if (title != other.title) return false
-		if (altTitle != other.altTitle) return false
-		if (url != other.url) return false
-		if (publicUrl != other.publicUrl) return false
-		if (rating != other.rating) return false
-		if (isNsfw != other.isNsfw) return false
-		if (coverUrl != other.coverUrl) return false
-		if (largeCoverUrl != other.largeCoverUrl) return false
-		if (state != other.state) return false
-		if (author != other.author) return false
-		if (source != other.source) return false
-
-		return true
-	}
-
-	override fun hashCode(): Int {
-		var result = id.hashCode()
-		result = 31 * result + title.hashCode()
-		result = 31 * result + (altTitle?.hashCode() ?: 0)
-		result = 31 * result + url.hashCode()
-		result = 31 * result + publicUrl.hashCode()
-		result = 31 * result + rating.hashCode()
-		result = 31 * result + isNsfw.hashCode()
-		result = 31 * result + coverUrl.hashCode()
-		result = 31 * result + (largeCoverUrl?.hashCode() ?: 0)
-		result = 31 * result + (state?.hashCode() ?: 0)
-		result = 31 * result + (author?.hashCode() ?: 0)
-		result = 31 * result + source.hashCode()
-		return result
-	}
-}

app/src/main/java/org/koitharu/kotatsu/core/db/entity/MangaTagsEntity.kt

@@ -3,9 +3,11 @@ package org.koitharu.kotatsu.core.db.entity
 import androidx.room.ColumnInfo
 import androidx.room.Entity
 import androidx.room.ForeignKey
+import org.koitharu.kotatsu.core.db.TABLE_MANGA_TAGS
 
 @Entity(
-	tableName = "manga_tags", primaryKeys = ["manga_id", "tag_id"],
+	tableName = TABLE_MANGA_TAGS,
+	primaryKeys = ["manga_id", "tag_id"],
 	foreignKeys = [
 		ForeignKey(
 			entity = MangaEntity::class,
@@ -23,5 +25,5 @@ import androidx.room.ForeignKey
 )
 class MangaTagsEntity(
 	@ColumnInfo(name = "manga_id", index = true) val mangaId: Long,
-	@ColumnInfo(name = "tag_id", index = true) val tagId: Long
+	@ColumnInfo(name = "tag_id", index = true) val tagId: Long,
 )

app/src/main/java/org/koitharu/kotatsu/core/db/entity/TagEntity.kt

@@ -3,35 +3,13 @@ package org.koitharu.kotatsu.core.db.entity
 import androidx.room.ColumnInfo
 import androidx.room.Entity
 import androidx.room.PrimaryKey
+import org.koitharu.kotatsu.core.db.TABLE_TAGS
 
-@Entity(tableName = "tags")
+@Entity(tableName = TABLE_TAGS)
-class TagEntity(
+data class TagEntity(
 	@PrimaryKey(autoGenerate = false)
 	@ColumnInfo(name = "tag_id") val id: Long,
 	@ColumnInfo(name = "title") val title: String,
 	@ColumnInfo(name = "key") val key: String,
-	@ColumnInfo(name = "source") val source: String
+	@ColumnInfo(name = "source") val source: String,
-) {
+)
-
-	override fun equals(other: Any?): Boolean {
-		if (this === other) return true
-		if (javaClass != other?.javaClass) return false
-
-		other as TagEntity
-
-		if (id != other.id) return false
-		if (title != other.title) return false
-		if (key != other.key) return false
-		if (source != other.source) return false
-
-		return true
-	}
-
-	override fun hashCode(): Int {
-		var result = id.hashCode()
-		result = 31 * result + title.hashCode()
-		result = 31 * result + key.hashCode()
-		result = 31 * result + source.hashCode()
-		return result
-	}
-}

app/src/main/java/org/koitharu/kotatsu/core/os/ShortcutsUpdater.kt

@@ -6,38 +6,41 @@ import android.content.pm.ShortcutManager
 import android.media.ThumbnailUtils
 import android.os.Build
 import android.util.Size
+import androidx.annotation.VisibleForTesting
 import androidx.core.content.pm.ShortcutInfoCompat
 import androidx.core.content.pm.ShortcutManagerCompat
 import androidx.core.graphics.drawable.IconCompat
+import androidx.room.InvalidationTracker
 import coil.ImageLoader
 import coil.request.ImageRequest
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.withContext
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.launch
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.domain.MangaDataRepository
+import org.koitharu.kotatsu.core.db.TABLE_HISTORY
 import org.koitharu.kotatsu.history.domain.HistoryRepository
 import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.reader.ui.ReaderActivity
+import org.koitharu.kotatsu.utils.ext.processLifecycleScope
 import org.koitharu.kotatsu.utils.ext.requireBitmap
 
-class ShortcutsRepository(
+class ShortcutsUpdater(
 	private val context: Context,
 	private val coil: ImageLoader,
 	private val historyRepository: HistoryRepository,
 	private val mangaRepository: MangaDataRepository,
-) {
+) : InvalidationTracker.Observer(TABLE_HISTORY) {
 
-	private val iconSize by lazy {
+	private val iconSize by lazy { getIconSize(context) }
-		getIconSize(context)
+	private var shortcutsUpdateJob: Job? = null
-	}
 
-	suspend fun updateShortcuts() {
+	override fun onInvalidated(tables: MutableSet<String>) {
-		if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N_MR1) return
+		val prevJob = shortcutsUpdateJob
-		val manager = context.getSystemService(Context.SHORTCUT_SERVICE) as ShortcutManager
+		shortcutsUpdateJob = processLifecycleScope.launch(Dispatchers.Default) {
-		val shortcuts = historyRepository.getList(0, manager.maxShortcutCountPerActivity)
+			prevJob?.join()
-			.filter { x -> x.title.isNotEmpty() }
+			updateShortcutsImpl()
-			.map { buildShortcutInfo(it).build().toShortcutInfo() }
+		}
-		manager.dynamicShortcuts = shortcuts
 	}
 
 	suspend fun requestPinShortcut(manga: Manga): Boolean {
@@ -48,17 +51,28 @@ class ShortcutsRepository(
 		)
 	}
 
+	@VisibleForTesting
+	suspend fun await(): Boolean {
+		return shortcutsUpdateJob?.join() != null
+	}
+
+	private suspend fun updateShortcutsImpl() {
+		val manager = context.getSystemService(Context.SHORTCUT_SERVICE) as ShortcutManager
+		val shortcuts = historyRepository.getList(0, manager.maxShortcutCountPerActivity)
+			.filter { x -> x.title.isNotEmpty() }
+			.map { buildShortcutInfo(it).build().toShortcutInfo() }
+		manager.dynamicShortcuts = shortcuts
+	}
+
 	private suspend fun buildShortcutInfo(manga: Manga): ShortcutInfoCompat.Builder {
 		val icon = runCatching {
-			withContext(Dispatchers.IO) {
+			val bmp = coil.execute(
-				val bmp = coil.execute(
+				ImageRequest.Builder(context)
-					ImageRequest.Builder(context)
+					.data(manga.coverUrl)
-						.data(manga.coverUrl)
+					.size(iconSize.width, iconSize.height)
-						.size(iconSize.width, iconSize.height)
+					.build()
-						.build()
+			).requireBitmap()
-				).requireBitmap()
+			ThumbnailUtils.extractThumbnail(bmp, iconSize.width, iconSize.height, 0)
-				ThumbnailUtils.extractThumbnail(bmp, iconSize.width, iconSize.height, 0)
-			}
 		}.fold(
 			onSuccess = { IconCompat.createWithAdaptiveBitmap(it) },
 			onFailure = { IconCompat.createWithResource(context, R.drawable.ic_shortcut_default) }

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

@@ -34,7 +34,7 @@ import org.koitharu.kotatsu.base.ui.BaseActivity
 import org.koitharu.kotatsu.browser.BrowserActivity
 import org.koitharu.kotatsu.core.exceptions.resolve.ExceptionResolver
 import org.koitharu.kotatsu.core.model.parcelable.ParcelableManga
-import org.koitharu.kotatsu.core.os.ShortcutsRepository
+import org.koitharu.kotatsu.core.os.ShortcutsUpdater
 import org.koitharu.kotatsu.databinding.ActivityDetailsBinding
 import org.koitharu.kotatsu.details.ui.adapter.BranchesAdapter
 import org.koitharu.kotatsu.download.ui.service.DownloadService
@@ -222,7 +222,7 @@ class DetailsActivity :
 		R.id.action_shortcut -> {
 			viewModel.manga.value?.let {
 				lifecycleScope.launch {
-					if (!get<ShortcutsRepository>().requestPinShortcut(it)) {
+					if (!get<ShortcutsUpdater>().requestPinShortcut(it)) {
 						binding.snackbar.show(getString(R.string.operation_not_supported))
 					}
 				}

app/src/main/java/org/koitharu/kotatsu/favourites/data/FavouriteCategoryEntity.kt

@@ -3,9 +3,10 @@ package org.koitharu.kotatsu.favourites.data
 import androidx.room.ColumnInfo
 import androidx.room.Entity
 import androidx.room.PrimaryKey
+import org.koitharu.kotatsu.core.db.TABLE_FAVOURITE_CATEGORIES
 
-@Entity(tableName = "favourite_categories")
+@Entity(tableName = TABLE_FAVOURITE_CATEGORIES)
-class FavouriteCategoryEntity(
+data class FavouriteCategoryEntity(
 	@PrimaryKey(autoGenerate = true)
 	@ColumnInfo(name = "category_id") val categoryId: Int,
 	@ColumnInfo(name = "created_at") val createdAt: Long,

app/src/main/java/org/koitharu/kotatsu/favourites/data/FavouriteEntity.kt

@@ -3,10 +3,13 @@ package org.koitharu.kotatsu.favourites.data
 import androidx.room.ColumnInfo
 import androidx.room.Entity
 import androidx.room.ForeignKey
+import org.koitharu.kotatsu.core.db.TABLE_FAVOURITES
 import org.koitharu.kotatsu.core.db.entity.MangaEntity
 
 @Entity(
-	tableName = "favourites", primaryKeys = ["manga_id", "category_id"], foreignKeys = [
+	tableName = TABLE_FAVOURITES,
+	primaryKeys = ["manga_id", "category_id"],
+	foreignKeys = [
 		ForeignKey(
 			entity = MangaEntity::class,
 			parentColumns = ["manga_id"],
@@ -21,32 +24,9 @@ import org.koitharu.kotatsu.core.db.entity.MangaEntity
 		)
 	]
 )
-class FavouriteEntity(
+data class FavouriteEntity(
 	@ColumnInfo(name = "manga_id", index = true) val mangaId: Long,
 	@ColumnInfo(name = "category_id", index = true) val categoryId: Long,
 	@ColumnInfo(name = "sort_key") val sortKey: Int,
 	@ColumnInfo(name = "created_at") val createdAt: Long,
-) {
+)
-
-	override fun equals(other: Any?): Boolean {
-		if (this === other) return true
-		if (javaClass != other?.javaClass) return false
-
-		other as FavouriteEntity
-
-		if (mangaId != other.mangaId) return false
-		if (categoryId != other.categoryId) return false
-		if (sortKey != other.sortKey) return false
-		if (createdAt != other.createdAt) return false
-
-		return true
-	}
-
-	override fun hashCode(): Int {
-		var result = mangaId.hashCode()
-		result = 31 * result + categoryId.hashCode()
-		result = 31 * result + sortKey
-		result = 31 * result + createdAt.hashCode()
-		return result
-	}
-}

app/src/main/java/org/koitharu/kotatsu/history/HistoryModule.kt

@@ -10,5 +10,5 @@ val historyModule
 
 		single { HistoryRepository(get(), get(), get(), getAll()) }
 
-		viewModel { HistoryListViewModel(get(), get(), get(), get()) }
+		viewModel { HistoryListViewModel(get(), get(), get()) }
 	}

app/src/main/java/org/koitharu/kotatsu/history/data/HistoryEntity.kt

@@ -4,10 +4,11 @@ import androidx.room.ColumnInfo
 import androidx.room.Entity
 import androidx.room.ForeignKey
 import androidx.room.PrimaryKey
+import org.koitharu.kotatsu.core.db.TABLE_HISTORY
 import org.koitharu.kotatsu.core.db.entity.MangaEntity
 
 @Entity(
-	tableName = "history",
+	tableName = TABLE_HISTORY,
 	foreignKeys = [
 		ForeignKey(
 			entity = MangaEntity::class,
@@ -17,7 +18,7 @@ import org.koitharu.kotatsu.core.db.entity.MangaEntity
 		)
 	]
 )
-class HistoryEntity(
+data class HistoryEntity(
 	@PrimaryKey(autoGenerate = false)
 	@ColumnInfo(name = "manga_id") val mangaId: Long,
 	@ColumnInfo(name = "created_at") val createdAt: Long,

app/src/main/java/org/koitharu/kotatsu/history/ui/HistoryListViewModel.kt

@@ -9,8 +9,6 @@ import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.flow.onStart
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.domain.ReversibleHandle
-import org.koitharu.kotatsu.base.domain.plus
-import org.koitharu.kotatsu.core.os.ShortcutsRepository
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.prefs.ListMode
 import org.koitharu.kotatsu.core.prefs.observeAsFlow
@@ -31,7 +29,6 @@ import java.util.concurrent.TimeUnit
 class HistoryListViewModel(
 	private val repository: HistoryRepository,
 	private val settings: AppSettings,
-	private val shortcutsRepository: ShortcutsRepository,
 	private val trackingRepository: TrackingRepository,
 ) : MangaListViewModel(settings) {
 
@@ -72,7 +69,6 @@ class HistoryListViewModel(
 	fun clearHistory() {
 		launchLoadingJob {
 			repository.clear()
-			shortcutsRepository.updateShortcuts()
 		}
 	}
 
@@ -81,10 +77,7 @@ class HistoryListViewModel(
 			return
 		}
 		launchJob(Dispatchers.Default) {
-			val handle = repository.deleteReversible(ids) + ReversibleHandle {
+			val handle = repository.deleteReversible(ids)
-				shortcutsRepository.updateShortcuts()
-			}
-			shortcutsRepository.updateShortcuts()
 			onItemsRemoved.postCall(handle)
 		}
 	}

app/src/main/java/org/koitharu/kotatsu/library/LibraryModule.kt

@@ -11,6 +11,6 @@ val libraryModule
 
 		factory { LibraryRepository(get()) }
 
-		viewModel { LibraryViewModel(get(), get(), get(), get(), get()) }
+		viewModel { LibraryViewModel(get(), get(), get(), get()) }
 		viewModel { LibraryCategoriesConfigViewModel(get()) }
 	}

app/src/main/java/org/koitharu/kotatsu/library/ui/LibraryViewModel.kt

@@ -7,12 +7,9 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.catch
 import kotlinx.coroutines.flow.combine
 import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.base.domain.ReversibleHandle
-import org.koitharu.kotatsu.base.domain.plus
 import org.koitharu.kotatsu.base.ui.BaseViewModel
 import org.koitharu.kotatsu.base.ui.util.ReversibleAction
 import org.koitharu.kotatsu.core.model.FavouriteCategory
-import org.koitharu.kotatsu.core.os.ShortcutsRepository
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.prefs.ListMode
 import org.koitharu.kotatsu.core.ui.DateTimeAgo
@@ -36,7 +33,6 @@ private const val HISTORY_MAX_SEGMENTS = 2
 class LibraryViewModel(
 	private val repository: LibraryRepository,
 	private val historyRepository: HistoryRepository,
-	private val shortcutsRepository: ShortcutsRepository,
 	private val trackingRepository: TrackingRepository,
 	private val settings: AppSettings,
 ) : BaseViewModel(), ListExtraProvider {
@@ -88,10 +84,7 @@ class LibraryViewModel(
 			return
 		}
 		launchJob(Dispatchers.Default) {
-			val handle = historyRepository.deleteReversible(ids) + ReversibleHandle {
+			val handle = historyRepository.deleteReversible(ids)
-				shortcutsRepository.updateShortcuts()
-			}
-			shortcutsRepository.updateShortcuts()
 			onActionDone.postCall(ReversibleAction(R.string.removed_from_history, handle))
 		}
 	}
@@ -105,7 +98,6 @@ class LibraryViewModel(
 				historyRepository.deleteAfter(minDate)
 				R.string.removed_from_history
 			}
-			shortcutsRepository.updateShortcuts()
 			onActionDone.postCall(ReversibleAction(stringRes, null))
 		}
 	}

app/src/main/java/org/koitharu/kotatsu/local/LocalModule.kt

@@ -16,5 +16,5 @@ val localModule
 
 		factory { DownloadManager.Factory(androidContext(), get(), get(), get(), get(), get()) }
 
-		viewModel { LocalListViewModel(get(), get(), get(), get()) }
+		viewModel { LocalListViewModel(get(), get(), get()) }
 	}

app/src/main/java/org/koitharu/kotatsu/local/ui/LocalListViewModel.kt

@@ -11,7 +11,6 @@ import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.core.os.ShortcutsRepository
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.download.ui.service.DownloadService
 import org.koitharu.kotatsu.history.domain.HistoryRepository
@@ -32,7 +31,6 @@ class LocalListViewModel(
 	private val repository: LocalMangaRepository,
 	private val historyRepository: HistoryRepository,
 	settings: AppSettings,
-	private val shortcutsRepository: ShortcutsRepository,
 ) : MangaListViewModel(settings) {
 
 	val onMangaRemoved = SingleLiveEvent<Unit>()
@@ -103,7 +101,6 @@ class LocalListViewModel(
 					}
 				}
 			}
-			shortcutsRepository.updateShortcuts()
 			onMangaRemoved.call(Unit)
 		}
 	}

app/src/main/java/org/koitharu/kotatsu/main/MainModule.kt

@@ -1,19 +1,29 @@
 package org.koitharu.kotatsu.main
 
+import android.app.Application
+import android.os.Build
+import androidx.room.InvalidationTracker
 import org.koin.android.ext.koin.androidContext
 import org.koin.androidx.viewmodel.dsl.viewModel
+import org.koin.dsl.bind
 import org.koin.dsl.module
 import org.koitharu.kotatsu.base.ui.util.ActivityRecreationHandle
-import org.koitharu.kotatsu.core.os.ShortcutsRepository
+import org.koitharu.kotatsu.core.os.ShortcutsUpdater
 import org.koitharu.kotatsu.main.ui.MainViewModel
 import org.koitharu.kotatsu.main.ui.protect.AppProtectHelper
 import org.koitharu.kotatsu.main.ui.protect.ProtectViewModel
 
 val mainModule
 	get() = module {
-		single { AppProtectHelper(get()) }
+		single { AppProtectHelper(get()) } bind Application.ActivityLifecycleCallbacks::class
-		single { ActivityRecreationHandle() }
+		single { ActivityRecreationHandle() } bind Application.ActivityLifecycleCallbacks::class
-		factory { ShortcutsRepository(androidContext(), get(), get(), get()) }
+
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N_MR1) {
+			single { ShortcutsUpdater(androidContext(), get(), get(), get()) } bind InvalidationTracker.Observer::class
+		} else {
+			factory { ShortcutsUpdater(androidContext(), get(), get(), get()) }
+		}
+
 		viewModel { MainViewModel(get(), get()) }
 		viewModel { ProtectViewModel(get(), get()) }
 	}

app/src/main/java/org/koitharu/kotatsu/reader/ReaderModule.kt

@@ -23,7 +23,6 @@ val readerModule
 				preselectedBranch = params[2],
 				dataRepository = get(),
 				historyRepository = get(),
-				shortcutsRepository = get(),
 				settings = get(),
 				pageSaveHelper = get(),
 				bookmarksRepository = get(),

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

@@ -17,7 +17,6 @@ import org.koitharu.kotatsu.base.ui.BaseViewModel
 import org.koitharu.kotatsu.bookmarks.domain.Bookmark
 import org.koitharu.kotatsu.bookmarks.domain.BookmarksRepository
 import org.koitharu.kotatsu.core.exceptions.MangaNotFoundException
-import org.koitharu.kotatsu.core.os.ShortcutsRepository
 import org.koitharu.kotatsu.core.parser.MangaRepository
 import org.koitharu.kotatsu.core.prefs.*
 import org.koitharu.kotatsu.history.domain.HistoryRepository
@@ -46,7 +45,6 @@ class ReaderViewModel(
 	private val preselectedBranch: String?,
 	private val dataRepository: MangaDataRepository,
 	private val historyRepository: HistoryRepository,
-	private val shortcutsRepository: ShortcutsRepository,
 	private val bookmarksRepository: BookmarksRepository,
 	private val settings: AppSettings,
 	private val pageSaveHelper: PageSaveHelper,
@@ -289,7 +287,6 @@ class ReaderViewModel(
 			currentState.value?.let {
 				val percent = computePercent(it.chapterId, it.page)
 				historyRepository.addOrUpdate(manga, it.chapterId, it.page, it.scroll, percent)
-				shortcutsRepository.updateShortcuts()
 			}
 
 			content.postValue(ReaderContent(pages, currentState.value))

app/src/main/java/org/koitharu/kotatsu/settings/SettingsModule.kt

@@ -1,12 +1,14 @@
 package org.koitharu.kotatsu.settings
 
 import android.net.Uri
+import android.os.Build
+import androidx.room.InvalidationTracker
 import org.koin.android.ext.koin.androidContext
 import org.koin.androidx.viewmodel.dsl.viewModel
 import org.koin.dsl.module
 import org.koitharu.kotatsu.core.backup.BackupRepository
-import org.koitharu.kotatsu.core.backup.RestoreRepository
 import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.settings.backup.BackupObserver
 import org.koitharu.kotatsu.settings.backup.BackupViewModel
 import org.koitharu.kotatsu.settings.backup.RestoreViewModel
 import org.koitharu.kotatsu.settings.newsources.NewSourcesViewModel
@@ -18,8 +20,11 @@ import org.koitharu.kotatsu.settings.tools.ToolsViewModel
 val settingsModule
 	get() = module {
 
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+			single<InvalidationTracker.Observer> { BackupObserver(androidContext()) }
+		}
+
 		factory { BackupRepository(get()) }
-		factory { RestoreRepository(get()) }
 		single(createdAtStart = true) { AppSettings(androidContext()) }
 
 		viewModel { BackupViewModel(get(), androidContext()) }

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

@@ -4,9 +4,14 @@ import android.app.backup.BackupAgent
 import android.app.backup.BackupDataInput
 import android.app.backup.BackupDataOutput
 import android.app.backup.FullBackupDataOutput
+import android.content.Context
 import android.os.ParcelFileDescriptor
+import androidx.annotation.VisibleForTesting
 import kotlinx.coroutines.runBlocking
-import org.koitharu.kotatsu.core.backup.*
+import org.koitharu.kotatsu.core.backup.BackupEntry
+import org.koitharu.kotatsu.core.backup.BackupRepository
+import org.koitharu.kotatsu.core.backup.BackupZipInput
+import org.koitharu.kotatsu.core.backup.BackupZipOutput
 import org.koitharu.kotatsu.core.db.MangaDatabase
 import java.io.*
 
@@ -26,7 +31,7 @@ class AppBackupAgent : BackupAgent() {
 
 	override fun onFullBackup(data: FullBackupDataOutput) {
 		super.onFullBackup(data)
-		val file = createBackupFile()
+		val file = createBackupFile(this, BackupRepository(MangaDatabase(applicationContext)))
 		try {
 			fullBackupFile(file, data)
 		} finally {
@@ -43,16 +48,16 @@ class AppBackupAgent : BackupAgent() {
 		mtime: Long
 	) {
 		if (destination?.name?.endsWith(".bk.zip") == true) {
-			restoreBackupFile(data.fileDescriptor, size)
+			restoreBackupFile(data.fileDescriptor, size, BackupRepository(MangaDatabase(applicationContext)))
 			destination.delete()
 		} else {
 			super.onRestoreFile(data, size, destination, type, mode, mtime)
 		}
 	}
 
-	private fun createBackupFile() = runBlocking {
+	@VisibleForTesting
-		val repository = BackupRepository(MangaDatabase(applicationContext))
+	fun createBackupFile(context: Context, repository: BackupRepository) = runBlocking {
-		BackupZipOutput(this@AppBackupAgent).use { backup ->
+		BackupZipOutput(context).use { backup ->
 			backup.put(repository.createIndex())
 			backup.put(repository.dumpHistory())
 			backup.put(repository.dumpCategories())
@@ -62,8 +67,8 @@ class AppBackupAgent : BackupAgent() {
 		}
 	}
 
-	private fun restoreBackupFile(fd: FileDescriptor, size: Long) {
+	@VisibleForTesting
-		val repository = RestoreRepository(MangaDatabase(applicationContext))
+	fun restoreBackupFile(fd: FileDescriptor, size: Long, repository: BackupRepository) {
 		val tempFile = File.createTempFile("backup_", ".tmp")
 		FileInputStream(fd).use { input ->
 			tempFile.outputStream().use { output ->
@@ -73,9 +78,9 @@ class AppBackupAgent : BackupAgent() {
 		val backup = BackupZipInput(tempFile)
 		try {
 			runBlocking {
-				repository.upsertHistory(backup.getEntry(BackupEntry.HISTORY))
+				repository.restoreHistory(backup.getEntry(BackupEntry.HISTORY))
-				repository.upsertCategories(backup.getEntry(BackupEntry.CATEGORIES))
+				repository.restoreCategories(backup.getEntry(BackupEntry.CATEGORIES))
-				repository.upsertFavourites(backup.getEntry(BackupEntry.FAVOURITES))
+				repository.restoreFavourites(backup.getEntry(BackupEntry.FAVOURITES))
 			}
 		} finally {
 			backup.close()

app/src/main/java/org/koitharu/kotatsu/settings/backup/BackupObserver.kt

@@ -0,0 +1,22 @@
+package org.koitharu.kotatsu.settings.backup
+
+import android.app.backup.BackupManager
+import android.content.Context
+import android.os.Build
+import androidx.annotation.RequiresApi
+import androidx.room.InvalidationTracker
+import org.koitharu.kotatsu.core.db.TABLE_FAVOURITES
+import org.koitharu.kotatsu.core.db.TABLE_FAVOURITE_CATEGORIES
+import org.koitharu.kotatsu.core.db.TABLE_HISTORY
+
+@RequiresApi(Build.VERSION_CODES.M)
+class BackupObserver(
+	context: Context,
+) : InvalidationTracker.Observer(arrayOf(TABLE_HISTORY, TABLE_FAVOURITES, TABLE_FAVOURITE_CATEGORIES)) {
+
+	private val backupManager = BackupManager(context)
+
+	override fun onInvalidated(tables: MutableSet<String>) {
+		backupManager.dataChanged()
+	}
+}

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

@@ -7,9 +7,9 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.runInterruptible
 import org.koitharu.kotatsu.base.ui.BaseViewModel
 import org.koitharu.kotatsu.core.backup.BackupEntry
+import org.koitharu.kotatsu.core.backup.BackupRepository
 import org.koitharu.kotatsu.core.backup.BackupZipInput
 import org.koitharu.kotatsu.core.backup.CompositeResult
-import org.koitharu.kotatsu.core.backup.RestoreRepository
 import org.koitharu.kotatsu.utils.SingleLiveEvent
 import org.koitharu.kotatsu.utils.progress.Progress
 import java.io.File
@@ -17,7 +17,7 @@ import java.io.FileNotFoundException
 
 class RestoreViewModel(
 	uri: Uri?,
-	private val repository: RestoreRepository,
+	private val repository: BackupRepository,
 	context: Context
 ) : BaseViewModel() {
 
@@ -44,13 +44,13 @@ class RestoreViewModel(
 				val result = CompositeResult()
 
 				progress.value = Progress(0, 3)
-				result += repository.upsertHistory(backup.getEntry(BackupEntry.HISTORY))
+				result += repository.restoreHistory(backup.getEntry(BackupEntry.HISTORY))
 
 				progress.value = Progress(1, 3)
-				result += repository.upsertCategories(backup.getEntry(BackupEntry.CATEGORIES))
+				result += repository.restoreCategories(backup.getEntry(BackupEntry.CATEGORIES))
 
 				progress.value = Progress(2, 3)
-				result += repository.upsertFavourites(backup.getEntry(BackupEntry.FAVOURITES))
+				result += repository.restoreFavourites(backup.getEntry(BackupEntry.FAVOURITES))
 
 				progress.value = Progress(3, 3)
 				onRestoreDone.call(result)

app/src/main/java/org/koitharu/kotatsu/widget/AppWidgetModule.kt

@@ -1,10 +1,15 @@
 package org.koitharu.kotatsu.widget
 
+import androidx.room.InvalidationTracker
+import org.koin.android.ext.koin.androidContext
 import org.koin.androidx.viewmodel.dsl.viewModel
 import org.koin.dsl.module
 import org.koitharu.kotatsu.widget.shelf.ShelfConfigViewModel
 
 val appWidgetModule
 	get() = module {
+
+		single<InvalidationTracker.Observer> { WidgetUpdater(androidContext()) }
+	
 		viewModel { ShelfConfigViewModel(get()) }
 	}

app/src/main/java/org/koitharu/kotatsu/widget/WidgetUpdater.kt

@@ -4,36 +4,24 @@ import android.appwidget.AppWidgetManager
 import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
-import kotlinx.coroutines.CancellationException
+import androidx.room.InvalidationTracker
-import kotlinx.coroutines.Dispatchers
+import org.koitharu.kotatsu.core.db.TABLE_FAVOURITES
-import kotlinx.coroutines.flow.launchIn
+import org.koitharu.kotatsu.core.db.TABLE_HISTORY
-import kotlinx.coroutines.flow.onEach
-import kotlinx.coroutines.flow.retry
-import kotlinx.coroutines.plus
-import org.koitharu.kotatsu.favourites.domain.FavouritesRepository
-import org.koitharu.kotatsu.history.domain.HistoryRepository
-import org.koitharu.kotatsu.parsers.model.SortOrder
-import org.koitharu.kotatsu.utils.ext.processLifecycleScope
 import org.koitharu.kotatsu.widget.recent.RecentWidgetProvider
 import org.koitharu.kotatsu.widget.shelf.ShelfWidgetProvider
 
-class WidgetUpdater(private val context: Context) {
+class WidgetUpdater(private val context: Context) : InvalidationTracker.Observer(TABLE_HISTORY, TABLE_FAVOURITES) {
 
-	fun subscribeToFavourites(repository: FavouritesRepository) {
+	override fun onInvalidated(tables: MutableSet<String>) {
-		repository.observeAll(SortOrder.NEWEST)
+		if (TABLE_HISTORY in tables) {
-			.onEach { updateWidget(ShelfWidgetProvider::class.java) }
+			updateWidgets(RecentWidgetProvider::class.java)
-			.retry { error -> error !is CancellationException }
+		}
-			.launchIn(processLifecycleScope + Dispatchers.Default)
+		if (TABLE_FAVOURITES in tables) {
+			updateWidgets(ShelfWidgetProvider::class.java)
+		}
 	}
 
-	fun subscribeToHistory(repository: HistoryRepository) {
+	private fun updateWidgets(cls: Class<*>) {
-		repository.observeAll()
-			.onEach { updateWidget(RecentWidgetProvider::class.java) }
-			.retry { error -> error !is CancellationException }
-			.launchIn(processLifecycleScope + Dispatchers.Default)
-	}
-
-	private fun updateWidget(cls: Class<*>) {
 		val intent = Intent(context, cls)
 		intent.action = AppWidgetManager.ACTION_APPWIDGET_UPDATE
 		val ids = AppWidgetManager.getInstance(context)

app/src/test/java/org/koitharu/kotatsu/core/backup/JsonSerializerTest.kt

@@ -0,0 +1,95 @@
+package org.koitharu.kotatsu.core.backup
+
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import org.koitharu.kotatsu.core.db.entity.MangaEntity
+import org.koitharu.kotatsu.core.db.entity.TagEntity
+import org.koitharu.kotatsu.favourites.data.FavouriteCategoryEntity
+import org.koitharu.kotatsu.favourites.data.FavouriteEntity
+import org.koitharu.kotatsu.history.data.HistoryEntity
+import org.koitharu.kotatsu.parsers.model.MangaSource
+import org.koitharu.kotatsu.parsers.model.MangaState
+import org.koitharu.kotatsu.parsers.model.SortOrder
+import java.util.concurrent.TimeUnit
+
+class JsonSerializerTest {
+
+	@Test
+	fun toFavouriteEntity() {
+		val entity = FavouriteEntity(
+			mangaId = 40,
+			categoryId = 20,
+			sortKey = 1,
+			createdAt = System.currentTimeMillis(),
+		)
+		val json = JsonSerializer(entity).toJson()
+		val result = JsonDeserializer(json).toFavouriteEntity()
+		assertEquals(entity, result)
+	}
+
+	@Test
+	fun toMangaEntity() {
+		val entity = MangaEntity(
+			id = 231,
+			title = "Lorem Ipsum",
+			altTitle = "Lorem Ispum 2",
+			url = "erw",
+			publicUrl = "hthth",
+			rating = 0.78f,
+			isNsfw = true,
+			coverUrl = "5345",
+			largeCoverUrl = null,
+			state = MangaState.FINISHED.name,
+			author = "RERE",
+			source = MangaSource.DUMMY.name,
+		)
+		val json = JsonSerializer(entity).toJson()
+		val result = JsonDeserializer(json).toMangaEntity()
+		assertEquals(entity, result)
+	}
+
+	@Test
+	fun toTagEntity() {
+		val entity = TagEntity(
+			id = 934023534,
+			title = "Adventure",
+			key = "adventure",
+			source = MangaSource.DUMMY.name,
+		)
+		val json = JsonSerializer(entity).toJson()
+		val result = JsonDeserializer(json).toTagEntity()
+		assertEquals(entity, result)
+	}
+
+	@Test
+	fun toHistoryEntity() {
+		val entity = HistoryEntity(
+			mangaId = 304135341,
+			createdAt = System.currentTimeMillis() - TimeUnit.DAYS.toMillis(6),
+			updatedAt = System.currentTimeMillis(),
+			chapterId = 29014843034,
+			page = 35,
+			scroll = 24.0f,
+			percent = 0.6f,
+		)
+		val json = JsonSerializer(entity).toJson()
+		val result = JsonDeserializer(json).toHistoryEntity()
+		assertEquals(entity, result)
+	}
+
+	@Test
+	fun toFavouriteCategoryEntity() {
+		val entity = FavouriteCategoryEntity(
+			categoryId = 142,
+			createdAt = System.currentTimeMillis(),
+			sortKey = 14,
+			title = "Read later",
+			order = SortOrder.RATING.name,
+			track = false,
+			isVisibleInLibrary = true,
+		)
+		val json = JsonSerializer(entity).toJson()
+		val result = JsonDeserializer(json).toFavouriteCategoryEntity()
+		assertEquals(entity, result)
+	}
+}

app/src/test/java/org/koitharu/kotatsu/core/github/GithubRepositoryTest.kt

@@ -0,0 +1,33 @@
+package org.koitharu.kotatsu.core.github
+
+import kotlinx.coroutines.test.runTest
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import okhttp3.internal.headersContentLength
+import org.junit.Assert
+import org.junit.Test
+import org.koitharu.kotatsu.BuildConfig
+import org.koitharu.kotatsu.parsers.util.await
+
+class GithubRepositoryTest {
+
+	private val okHttpClient = OkHttpClient()
+	private val repository = GithubRepository(okHttpClient)
+
+	@Test
+	fun getLatestVersion() = runTest {
+		val version = repository.getLatestVersion()
+		val versionId = VersionId(version.name)
+
+		val apkHead = okHttpClient.newCall(
+			Request.Builder()
+				.url(version.apkUrl)
+				.head()
+				.build()
+		).await()
+
+		Assert.assertTrue(versionId <= VersionId(BuildConfig.VERSION_NAME))
+		Assert.assertTrue(apkHead.isSuccessful)
+		Assert.assertEquals(version.apkSize, apkHead.headersContentLength())
+	}
+}