refactor: bookInfo viewmodel

app/src/main/java/ua/acclorite/book_story/domain/use_case/book/CanResetCoverImageUseCase.kt

@@ -27,7 +27,7 @@ class CanResetCoverImageUseCase @Inject constructor(
             // Getting default cover image
             val defaultCoverImage = bookRepository.getDefaultCover(book).getOrThrow()
             if (defaultCoverImage == null) {
-                return@mapCatching true
+                return@mapCatching false
             }
 
             // Return true if current cover is null (and default is not)

app/src/main/java/ua/acclorite/book_story/domain/use_case/book/UpdateCoverImageUseCase.kt

@@ -24,6 +24,8 @@ class UpdateCoverImageUseCase @Inject constructor(
         logI("Updating cover image of [$bookId].")
 
         bookRepository.getBook(bookId).mapCatching { book ->
+            if (book.coverImage == coverImage) return
+
             // Deleting old cover
             book.coverImage?.let { coverImageHandler.deleteCover(it) }?.onFailure {
                 logW("Could not delete old cover image with error: ${it.message}")

app/src/main/java/ua/acclorite/book_story/presentation/book_info/BookInfoEffect.kt

@@ -0,0 +1,38 @@
+/*
+ * Book's Story — free and open-source Material You eBook reader.
+ * Copyright (C) 2024-2025 Acclorite
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+package ua.acclorite.book_story.presentation.book_info
+
+import androidx.compose.runtime.Immutable
+
+@Immutable
+sealed class BookInfoEffect {
+    data object OnChangedCover : BookInfoEffect()
+
+    data object OnErrorResetCover : BookInfoEffect()
+
+    data object OnResetCover : BookInfoEffect()
+
+    data object OnDeletedCover : BookInfoEffect()
+
+    data object OnTitleChanged : BookInfoEffect()
+
+    data object OnAuthorChanged : BookInfoEffect()
+
+    data object OnDescriptionChanged : BookInfoEffect()
+
+    data object OnPathChanged : BookInfoEffect()
+
+    data object OnBookDeleted : BookInfoEffect()
+
+    data object OnBookMoved : BookInfoEffect()
+
+    data object OnNavigateBack : BookInfoEffect()
+
+    data object OnNavigateToLibrarySettings : BookInfoEffect()
+
+    data object OnNavigateToReader : BookInfoEffect()
+}

app/src/main/java/ua/acclorite/book_story/presentation/book_info/BookInfoEvent.kt

@@ -6,31 +6,24 @@
 
 package ua.acclorite.book_story.presentation.book_info
 
-import android.content.Context
+import android.graphics.Bitmap
-import android.net.Uri
 import androidx.compose.runtime.Immutable
 import ua.acclorite.book_story.core.ui.UIText
 import ua.acclorite.book_story.domain.model.library.Category
 
 @Immutable
 sealed class BookInfoEvent {
-
     data object OnShowDetailsBottomSheet : BookInfoEvent()
 
     data object OnShowChangeCoverBottomSheet : BookInfoEvent()
 
     data class OnChangeCover(
-        val uri: Uri,
+        val image: Bitmap
-        val context: Context
     ) : BookInfoEvent()
 
-    data class OnResetCover(
+    data object OnResetCover : BookInfoEvent()
-        val context: Context
-    ) : BookInfoEvent()
 
-    data class OnDeleteCover(
+    data object OnDeleteCover : BookInfoEvent()
-        val context: Context
-    ) : BookInfoEvent()
 
     data object OnCheckCoverReset : BookInfoEvent()
 
@@ -39,44 +32,42 @@ sealed class BookInfoEvent {
     data object OnShowTitleDialog : BookInfoEvent()
 
     data class OnActionTitleDialog(
-        val title: String,
+        val title: String
-        val context: Context
     ) : BookInfoEvent()
 
     data object OnShowAuthorDialog : BookInfoEvent()
 
     data class OnActionAuthorDialog(
-        val author: UIText,
+        val author: UIText
-        val context: Context
     ) : BookInfoEvent()
 
     data object OnShowDescriptionDialog : BookInfoEvent()
 
     data class OnActionDescriptionDialog(
-        val description: String?,
+        val description: String?
-        val context: Context
     ) : BookInfoEvent()
 
     data object OnShowPathDialog : BookInfoEvent()
 
     data class OnActionPathDialog(
-        val path: String,
+        val path: String
-        val context: Context
     ) : BookInfoEvent()
 
     data object OnShowDeleteDialog : BookInfoEvent()
 
-    data class OnActionDeleteDialog(
+    data object OnActionDeleteDialog : BookInfoEvent()
-        val context: Context,
-        val navigateBack: () -> Unit
-    ) : BookInfoEvent()
 
     data object OnShowMoveDialog : BookInfoEvent()
 
     data class OnActionMoveDialog(
-        val selectedCategories: List<Category>,
+        val selectedCategories: List<Category>
-        val context: Context
     ) : BookInfoEvent()
 
     data object OnDismissDialog : BookInfoEvent()
+
+    data object OnNavigateBack : BookInfoEvent()
+
+    data object OnNavigateToLibrarySettings : BookInfoEvent()
+
+    data object OnNavigateToReader : BookInfoEvent()
 }

app/src/main/java/ua/acclorite/book_story/presentation/book_info/BookInfoModel.kt

@@ -6,21 +6,20 @@
 
 package ua.acclorite.book_story.presentation.book_info
 
-import android.graphics.BitmapFactory
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
-import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.ensureActive
+import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asSharedFlow
 import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import kotlinx.coroutines.withContext
-import kotlinx.coroutines.yield
-import ua.acclorite.book_story.R
 import ua.acclorite.book_story.domain.use_case.book.CanResetCoverImageUseCase
 import ua.acclorite.book_story.domain.use_case.book.DeleteBookUseCase
 import ua.acclorite.book_story.domain.use_case.book.GetBookUseCase
@@ -31,8 +30,8 @@ import ua.acclorite.book_story.domain.use_case.book.UpdateCoverImageUseCase
 import ua.acclorite.book_story.presentation.browse.BrowseScreen
 import ua.acclorite.book_story.presentation.history.HistoryScreen
 import ua.acclorite.book_story.presentation.library.LibraryScreen
-import ua.acclorite.book_story.ui.common.helpers.showToast
 import javax.inject.Inject
+import kotlin.coroutines.coroutineContext
 
 @HiltViewModel
 class BookInfoModel @Inject constructor(
@@ -50,11 +49,13 @@ class BookInfoModel @Inject constructor(
     private val _state = MutableStateFlow(BookInfoState())
     val state = _state.asStateFlow()
 
-    private var eventJob = SupervisorJob()
+    private val _effects = MutableSharedFlow<BookInfoEffect>()
-    private var resetJob: Job? = null
+    val effects = _effects.asSharedFlow()
+
+    private val eventStack = mutableListOf<Job>()
 
     fun onEvent(event: BookInfoEvent) {
-        viewModelScope.launch(eventJob + Dispatchers.Main) {
+        viewModelScope.launch {
             when (event) {
                 is BookInfoEvent.OnShowDetailsBottomSheet -> {
                     _state.update {
@@ -73,20 +74,15 @@ class BookInfoModel @Inject constructor(
                 }
 
                 is BookInfoEvent.OnChangeCover -> {
-                    launch {
+                    withContext(Dispatchers.Default) {
-                        val image = event.context.contentResolver?.openInputStream(event.uri)?.use {
+                        updateCoverImageUseCase(_state.value.book.id, event.image)
-                            BitmapFactory.decodeStream(it)
+                        val updatedCoverImage = getBookUseCase(_state.value.book.id)?.coverImage
-                        } ?: return@launch
+                            ?: return@withContext
-
-                        updateCoverImageUseCase(_state.value.book.id, image)
-
-                        val newCoverImage = getBookUseCase(_state.value.book.id)?.coverImage
-                            ?: return@launch
 
                         _state.update {
                             it.copy(
                                 book = it.book.copy(
-                                    coverImage = newCoverImage
+                                    coverImage = updatedCoverImage
                                 ),
                                 bottomSheet = null,
                                 canResetCover = canResetCoverImageUseCase(it.book.id)
@@ -96,33 +92,22 @@ class BookInfoModel @Inject constructor(
                         LibraryScreen.refreshListChannel.trySend(0)
                         HistoryScreen.refreshListChannel.trySend(0)
 
-                        withContext(Dispatchers.Main) {
+                        _effects.emit(BookInfoEffect.OnChangedCover)
-                            event.context.getString(R.string.cover_image_changed)
-                                .showToast(context = event.context)
-                        }
                     }
                 }
 
                 is BookInfoEvent.OnResetCover -> {
-                    launch {
+                    withContext(Dispatchers.Default) {
                         val result = resetCoverImageUseCase(_state.value.book.id)
-
                         if (!result) {
-                            withContext(Dispatchers.Main) {
+                            _effects.emit(BookInfoEffect.OnErrorResetCover)
-                                event.context.getString(R.string.error_could_not_reset_cover)
+                            return@withContext
-                                    .showToast(context = event.context)
-                            }
-                            return@launch
                         }
 
                         val book = getBookUseCase(_state.value.book.id)
-
                         if (book == null) {
-                            withContext(Dispatchers.Main) {
+                            _effects.emit(BookInfoEffect.OnErrorResetCover)
-                                event.context.getString(R.string.error_something_went_wrong)
+                            return@withContext
-                                    .showToast(context = event.context)
-                            }
-                            return@launch
                         }
 
                         _state.update {
@@ -133,22 +118,15 @@ class BookInfoModel @Inject constructor(
                             )
                         }
 
-                        withContext(Dispatchers.Main) {
-                            event.context.getString(R.string.cover_reset)
-                                .showToast(context = event.context)
-                        }
-
                         LibraryScreen.refreshListChannel.trySend(0)
                         HistoryScreen.refreshListChannel.trySend(0)
+
+                        _effects.emit(BookInfoEffect.OnResetCover)
                     }
                 }
 
                 is BookInfoEvent.OnDeleteCover -> {
-                    launch {
+                    withContext(Dispatchers.Default) {
-                        if (_state.value.book.coverImage == null) {
-                            return@launch
-                        }
-
                         updateCoverImageUseCase(_state.value.book.id, null)
                         _state.update {
                             it.copy(
@@ -163,25 +141,21 @@ class BookInfoModel @Inject constructor(
                         LibraryScreen.refreshListChannel.trySend(0)
                         HistoryScreen.refreshListChannel.trySend(0)
 
-                        withContext(Dispatchers.Main) {
+                        _effects.emit(BookInfoEffect.OnDeletedCover)
-                            event.context.getString(R.string.cover_image_deleted)
-                                .showToast(context = event.context)
-                        }
                     }
                 }
 
                 is BookInfoEvent.OnCheckCoverReset -> {
-                    launch(Dispatchers.IO) {
+                    withContext(Dispatchers.Default) {
-                        if (_state.value.book.id == -1) return@launch
+                        if (_state.value.book.id == -1) return@withContext
-                        canResetCoverImageUseCase(_state.value.book.id).apply {
+                        val canResetCover = canResetCoverImageUseCase(_state.value.book.id)
                         _state.update {
                             it.copy(
-                                    canResetCover = this
+                                canResetCover = canResetCover
                             )
                         }
                     }
                 }
-                }
 
                 is BookInfoEvent.OnDismissBottomSheet -> {
                     _state.update {
@@ -200,7 +174,7 @@ class BookInfoModel @Inject constructor(
                 }
 
                 is BookInfoEvent.OnActionTitleDialog -> {
-                    launch {
+                    withContext(Dispatchers.Default) {
                         _state.update {
                             it.copy(
                                 book = it.book.copy(
@@ -213,10 +187,7 @@ class BookInfoModel @Inject constructor(
                         LibraryScreen.refreshListChannel.trySend(0)
                         HistoryScreen.refreshListChannel.trySend(0)
 
-                        withContext(Dispatchers.Main) {
+                        _effects.emit(BookInfoEffect.OnTitleChanged)
-                            event.context.getString(R.string.title_changed)
-                                .showToast(context = event.context)
-                        }
                     }
                 }
 
@@ -229,7 +200,7 @@ class BookInfoModel @Inject constructor(
                 }
 
                 is BookInfoEvent.OnActionAuthorDialog -> {
-                    launch {
+                    withContext(Dispatchers.Default) {
                         _state.update {
                             it.copy(
                                 book = it.book.copy(
@@ -242,10 +213,7 @@ class BookInfoModel @Inject constructor(
                         LibraryScreen.refreshListChannel.trySend(0)
                         HistoryScreen.refreshListChannel.trySend(0)
 
-                        withContext(Dispatchers.Main) {
+                        _effects.emit(BookInfoEffect.OnAuthorChanged)
-                            event.context.getString(R.string.author_changed)
-                                .showToast(context = event.context)
-                        }
                     }
                 }
 
@@ -258,7 +226,7 @@ class BookInfoModel @Inject constructor(
                 }
 
                 is BookInfoEvent.OnActionDescriptionDialog -> {
-                    launch {
+                    withContext(Dispatchers.Default) {
                         _state.update {
                             it.copy(
                                 book = it.book.copy(
@@ -271,10 +239,7 @@ class BookInfoModel @Inject constructor(
                         LibraryScreen.refreshListChannel.trySend(0)
                         HistoryScreen.refreshListChannel.trySend(0)
 
-                        withContext(Dispatchers.Main) {
+                        _effects.emit(BookInfoEffect.OnDescriptionChanged)
-                            event.context.getString(R.string.description_changed)
-                                .showToast(context = event.context)
-                        }
                     }
                 }
 
@@ -287,7 +252,7 @@ class BookInfoModel @Inject constructor(
                 }
 
                 is BookInfoEvent.OnActionPathDialog -> {
-                    launch {
+                    withContext(Dispatchers.Default) {
                         _state.update {
                             it.copy(
                                 book = it.book.copy(
@@ -300,10 +265,7 @@ class BookInfoModel @Inject constructor(
                         LibraryScreen.refreshListChannel.trySend(0)
                         HistoryScreen.refreshListChannel.trySend(0)
 
-                        withContext(Dispatchers.Main) {
+                        _effects.emit(BookInfoEffect.OnPathChanged)
-                            event.context.getString(R.string.path_changed)
-                                .showToast(context = event.context)
-                        }
 
                         val file = getFileFromBookUseCase(_state.value.book.id)
                         _state.update {
@@ -323,26 +285,21 @@ class BookInfoModel @Inject constructor(
                 }
 
                 is BookInfoEvent.OnActionDeleteDialog -> {
-                    launch {
+                    withContext(Dispatchers.Default) {
                         _state.update {
                             it.copy(
                                 dialog = null,
                                 bottomSheet = null
                             )
                         }
-
                         deleteBookUseCase(_state.value.book)
 
                         LibraryScreen.refreshListChannel.trySend(0)
                         HistoryScreen.refreshListChannel.trySend(0)
                         BrowseScreen.refreshListChannel.trySend(Unit)
 
-                        withContext(Dispatchers.Main) {
+                        _effects.emit(BookInfoEffect.OnBookDeleted)
-                            event.context.getString(R.string.book_deleted)
+                        _effects.emit(BookInfoEffect.OnNavigateBack)
-                                .showToast(context = event.context)
-                        }
-
-                        event.navigateBack()
                     }
                 }
 
@@ -355,7 +312,7 @@ class BookInfoModel @Inject constructor(
                 }
 
                 is BookInfoEvent.OnActionMoveDialog -> {
-                    launch {
+                    withContext(Dispatchers.Default) {
                         _state.update {
                             it.copy(
                                 book = it.book.copy(
@@ -370,10 +327,7 @@ class BookInfoModel @Inject constructor(
                         LibraryScreen.refreshListChannel.trySend(0)
                         HistoryScreen.refreshListChannel.trySend(0)
 
-                        withContext(Dispatchers.Main) {
+                        _effects.emit(BookInfoEffect.OnBookMoved)
-                            event.context.getString(R.string.book_moved)
-                                .showToast(context = event.context)
-                        }
                     }
                 }
 
@@ -384,28 +338,35 @@ class BookInfoModel @Inject constructor(
                         )
                     }
                 }
+
+                is BookInfoEvent.OnNavigateBack -> {
+                    _effects.emit(BookInfoEffect.OnNavigateBack)
+                }
+
+                is BookInfoEvent.OnNavigateToLibrarySettings -> {
+                    _effects.emit(BookInfoEffect.OnNavigateToLibrarySettings)
+                }
+
+                is BookInfoEvent.OnNavigateToReader -> {
+                    _effects.emit(BookInfoEffect.OnNavigateToReader)
                 }
             }
+        }.also { eventStack.add(it) }
     }
 
     fun init(
         bookId: Int,
-        changePath: Boolean,
+        changePath: Boolean
-        navigateBack: () -> Unit
     ) {
-        viewModelScope.launch(Dispatchers.IO) {
+        viewModelScope.launch(Dispatchers.Default) {
             val book = getBookUseCase(bookId)
 
             if (book == null) {
-                navigateBack()
+                _effects.emit(BookInfoEffect.OnNavigateBack)
                 return@launch
             }
 
-            eventJob.cancel()
+            clear()
-            resetJob?.cancel()
-            eventJob.join()
-            resetJob?.join()
-            eventJob = SupervisorJob()
 
             _state.update {
                 BookInfoState(
@@ -413,9 +374,7 @@ class BookInfoModel @Inject constructor(
                 )
             }
 
-            if (changePath) {
+            if (changePath) onEvent(BookInfoEvent.OnShowPathDialog)
-                onEvent(BookInfoEvent.OnShowPathDialog)
-            }
             onEvent(BookInfoEvent.OnCheckCoverReset)
 
             val file = getFileFromBookUseCase(bookId)
@@ -427,19 +386,26 @@ class BookInfoModel @Inject constructor(
         }
     }
 
-    fun resetScreen() {
+    fun clearAsync() {
-        resetJob = viewModelScope.launch(Dispatchers.Main) {
+        viewModelScope.launch {
-            eventJob.cancel()
+            eventStack.forEach { job ->
-            eventJob = SupervisorJob()
+                job.cancel()
-
+            }
-            yield()
             _state.update { BookInfoState() }
         }
     }
 
+    suspend fun clear() {
+        eventStack.forEach { job ->
+            job.cancel()
+            job.join()
+        }
+        _state.update { BookInfoState() }
+    }
+
     private suspend inline fun <T> MutableStateFlow<T>.update(function: (T) -> T) {
         mutex.withLock {
-            yield()
+            coroutineContext.ensureActive()
             this.value = function(this.value)
         }
     }

app/src/main/java/ua/acclorite/book_story/presentation/book_info/BookInfoScreen.kt

@@ -19,13 +19,10 @@ import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import kotlinx.coroutines.channels.Channel
 import kotlinx.coroutines.channels.getOrElse
 import kotlinx.parcelize.Parcelize
-import ua.acclorite.book_story.presentation.history.HistoryScreen
 import ua.acclorite.book_story.presentation.navigator.Screen
-import ua.acclorite.book_story.presentation.reader.ReaderScreen
-import ua.acclorite.book_story.presentation.settings.LibrarySettingsScreen
 import ua.acclorite.book_story.presentation.settings.SettingsModel
 import ua.acclorite.book_story.ui.book_info.BookInfoContent
-import ua.acclorite.book_story.ui.navigator.LocalNavigator
+import ua.acclorite.book_story.ui.book_info.BookInfoEffects
 
 @Parcelize
 data class BookInfoScreen(val bookId: Int) : Screen, Parcelable {
@@ -46,7 +43,6 @@ data class BookInfoScreen(val bookId: Int) : Screen, Parcelable {
 
     @Composable
     override fun Content() {
-        val navigator = LocalNavigator.current
         val screenModel = hiltViewModel<BookInfoModel>()
         val settingsModel = hiltViewModel<SettingsModel>()
 
@@ -57,19 +53,21 @@ data class BookInfoScreen(val bookId: Int) : Screen, Parcelable {
         LaunchedEffect(Unit) {
             screenModel.init(
                 bookId = bookId,
-                changePath = changePathChannel.tryReceive().getOrElse { false },
+                changePath = changePathChannel.tryReceive().getOrElse { false }
-                navigateBack = {
-                    navigator.pop()
-                }
             )
         }
 
         DisposableEffect(Unit) {
             onDispose {
-                screenModel.resetScreen()
+                screenModel.clearAsync()
             }
         }
 
+        BookInfoEffects(
+            effects = screenModel.effects,
+            book = state.value.book
+        )
+
         Box(Modifier.fillMaxSize())
 
         if (state.value.book.id == bookId) {
@@ -101,18 +99,9 @@ data class BookInfoScreen(val bookId: Int) : Screen, Parcelable {
                 actionMoveDialog = screenModel::onEvent,
                 showDeleteDialog = screenModel::onEvent,
                 actionDeleteDialog = screenModel::onEvent,
-                navigateToReader = {
+                navigateToReader = screenModel::onEvent,
-                    if (state.value.book.id != -1) {
+                navigateToLibrarySettings = screenModel::onEvent,
-                        HistoryScreen.insertHistoryChannel.trySend(state.value.book.id)
+                navigateBack = screenModel::onEvent
-                        navigator.push(ReaderScreen(state.value.book.id))
-                    }
-                },
-                navigateToLibrarySettings = {
-                    navigator.push(LibrarySettingsScreen)
-                },
-                navigateBack = {
-                    navigator.pop()
-                }
             )
         }
     }

app/src/main/java/ua/acclorite/book_story/ui/about/AboutEffects.kt

@@ -25,7 +25,7 @@ fun AboutEffects(effects: SharedFlow<AboutEffect>) {
     val navigator = LocalNavigator.current
     val activity = LocalActivity.current
 
-    LaunchedEffect(Unit) {
+    LaunchedEffect(effects, activity, navigator) {
         effects.collect { effect ->
             when (effect) {
                 is AboutEffect.OnNavigateToBrowserPage -> {

app/src/main/java/ua/acclorite/book_story/ui/book_info/BookInfoAuthorDialog.kt

@@ -7,7 +7,6 @@
 package ua.acclorite.book_story.ui.book_info
 
 import androidx.compose.runtime.Composable
-import androidx.compose.ui.platform.LocalContext
 import ua.acclorite.book_story.R
 import ua.acclorite.book_story.core.ui.UIText
 import ua.acclorite.book_story.domain.model.library.Book
@@ -20,7 +19,6 @@ fun BookInfoAuthorDialog(
     actionAuthorDialog: (BookInfoEvent.OnActionAuthorDialog) -> Unit,
     dismissDialog: (BookInfoEvent.OnDismissDialog) -> Unit
 ) {
-    val context = LocalContext.current
     DialogWithTextField(
         initialValue = book.author.getAsString() ?: "",
         lengthLimit = 100,
@@ -31,8 +29,7 @@ fun BookInfoAuthorDialog(
             actionAuthorDialog(
                 BookInfoEvent.OnActionAuthorDialog(
                     author = if (it.isBlank()) UIText.StringResource(R.string.unknown_author)
-                    else UIText.StringValue(it.trim().replace("\n", "")),
+                    else UIText.StringValue(it.trim().replace("\n", ""))
-                    context = context
                 )
             )
         }

app/src/main/java/ua/acclorite/book_story/ui/book_info/BookInfoBackHandler.kt

@@ -8,12 +8,13 @@ package ua.acclorite.book_story.ui.book_info
 
 import androidx.activity.compose.BackHandler
 import androidx.compose.runtime.Composable
+import ua.acclorite.book_story.presentation.book_info.BookInfoEvent
 
 @Composable
 fun BookInfoBackHandler(
-    navigateBack: () -> Unit
+    navigateBack: (BookInfoEvent.OnNavigateBack) -> Unit
 ) {
     BackHandler {
-        navigateBack()
+        navigateBack(BookInfoEvent.OnNavigateBack)
     }
 }

app/src/main/java/ua/acclorite/book_story/ui/book_info/BookInfoChangeCoverBottomSheet.kt

@@ -6,6 +6,7 @@
 
 package ua.acclorite.book_story.ui.book_info
 
+import android.graphics.BitmapFactory
 import androidx.activity.compose.rememberLauncherForActivityResult
 import androidx.activity.result.PickVisualMediaRequest
 import androidx.activity.result.contract.ActivityResultContracts
@@ -43,10 +44,13 @@ fun BookInfoChangeCoverBottomSheet(
         contract = ActivityResultContracts.PickVisualMedia(),
         onResult = { uri ->
             if (uri != null) {
+                val image = context.contentResolver?.openInputStream(uri)?.use {
+                    BitmapFactory.decodeStream(it)
+                } ?: return@rememberLauncherForActivityResult
+
                 changeCover(
                     BookInfoEvent.OnChangeCover(
-                        uri = uri,
+                        image = image
-                        context = context
                     )
                 )
             }
@@ -72,11 +76,7 @@ fun BookInfoChangeCoverBottomSheet(
                         text = stringResource(id = R.string.reset_cover),
                         description = stringResource(id = R.string.reset_cover_desc)
                     ) {
-                        resetCover(
+                        resetCover(BookInfoEvent.OnResetCover)
-                            BookInfoEvent.OnResetCover(
-                                context = context
-                            )
-                        )
                     }
                 }
             }
@@ -100,11 +100,7 @@ fun BookInfoChangeCoverBottomSheet(
                         text = stringResource(id = R.string.delete_cover),
                         description = stringResource(id = R.string.delete_cover_desc)
                     ) {
-                        deleteCover(
+                        deleteCover(BookInfoEvent.OnDeleteCover)
-                            BookInfoEvent.OnDeleteCover(
-                                context = context
-                            )
-                        )
                     }
                 }
             }

app/src/main/java/ua/acclorite/book_story/ui/book_info/BookInfoContent.kt

@@ -44,9 +44,9 @@ fun BookInfoContent(
     checkCoverReset: (BookInfoEvent.OnCheckCoverReset) -> Unit,
     dismissDialog: (BookInfoEvent.OnDismissDialog) -> Unit,
     dismissBottomSheet: (BookInfoEvent.OnDismissBottomSheet) -> Unit,
-    navigateToReader: () -> Unit,
+    navigateToReader: (BookInfoEvent.OnNavigateToReader) -> Unit,
-    navigateToLibrarySettings: () -> Unit,
+    navigateToLibrarySettings: (BookInfoEvent.OnNavigateToLibrarySettings) -> Unit,
-    navigateBack: () -> Unit
+    navigateBack: (BookInfoEvent.OnNavigateBack) -> Unit
 ) {
     BookInfoDialog(
         dialog = dialog,
@@ -59,7 +59,6 @@ fun BookInfoContent(
         actionDeleteDialog = actionDeleteDialog,
         actionMoveDialog = actionMoveDialog,
         dismissDialog = dismissDialog,
-        navigateBack = navigateBack,
         navigateToLibrarySettings = navigateToLibrarySettings
     )
 

app/src/main/java/ua/acclorite/book_story/ui/book_info/BookInfoDeleteDialog.kt

@@ -9,7 +9,6 @@ package ua.acclorite.book_story.ui.book_info
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.outlined.DeleteOutline
 import androidx.compose.runtime.Composable
-import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import ua.acclorite.book_story.R
 import ua.acclorite.book_story.presentation.book_info.BookInfoEvent
@@ -18,11 +17,8 @@ import ua.acclorite.book_story.ui.common.components.dialog.Dialog
 @Composable
 fun BookInfoDeleteDialog(
     actionDeleteDialog: (BookInfoEvent.OnActionDeleteDialog) -> Unit,
-    dismissDialog: (BookInfoEvent.OnDismissDialog) -> Unit,
+    dismissDialog: (BookInfoEvent.OnDismissDialog) -> Unit
-    navigateBack: () -> Unit
 ) {
-    val context = LocalContext.current
-
     Dialog(
         title = stringResource(id = R.string.delete_book),
         icon = Icons.Outlined.DeleteOutline,
@@ -33,12 +29,7 @@ fun BookInfoDeleteDialog(
         withContent = false,
         actionEnabled = true,
         onAction = {
-            actionDeleteDialog(
+            actionDeleteDialog(BookInfoEvent.OnActionDeleteDialog)
-                BookInfoEvent.OnActionDeleteDialog(
-                    context = context,
-                    navigateBack = navigateBack
-                )
-            )
         }
     )
 }

app/src/main/java/ua/acclorite/book_story/ui/book_info/BookInfoDescriptionDialog.kt

@@ -7,7 +7,6 @@
 package ua.acclorite.book_story.ui.book_info
 
 import androidx.compose.runtime.Composable
-import androidx.compose.ui.platform.LocalContext
 import ua.acclorite.book_story.domain.model.library.Book
 import ua.acclorite.book_story.presentation.book_info.BookInfoEvent
 import ua.acclorite.book_story.ui.common.components.dialog.DialogWithTextField
@@ -18,7 +17,6 @@ fun BookInfoDescriptionDialog(
     actionDescriptionDialog: (BookInfoEvent.OnActionDescriptionDialog) -> Unit,
     dismissDialog: (BookInfoEvent.OnDismissDialog) -> Unit
 ) {
-    val context = LocalContext.current
     DialogWithTextField(
         initialValue = book.description ?: "",
         lengthLimit = 5000,
@@ -29,8 +27,7 @@ fun BookInfoDescriptionDialog(
             actionDescriptionDialog(
                 BookInfoEvent.OnActionDescriptionDialog(
                     description = if (it.isBlank()) null
-                    else it.trim().replace("\n", ""),
+                    else it.trim().replace("\n", "")
-                    context = context
                 )
             )
         }

app/src/main/java/ua/acclorite/book_story/ui/book_info/BookInfoDialog.kt

@@ -25,15 +25,13 @@ fun BookInfoDialog(
     actionDeleteDialog: (BookInfoEvent.OnActionDeleteDialog) -> Unit,
     actionMoveDialog: (BookInfoEvent.OnActionMoveDialog) -> Unit,
     dismissDialog: (BookInfoEvent.OnDismissDialog) -> Unit,
-    navigateBack: () -> Unit,
+    navigateToLibrarySettings: (BookInfoEvent.OnNavigateToLibrarySettings) -> Unit
-    navigateToLibrarySettings: () -> Unit
 ) {
     when (dialog) {
         BookInfoScreen.DELETE_DIALOG -> {
             BookInfoDeleteDialog(
                 actionDeleteDialog = actionDeleteDialog,
-                dismissDialog = dismissDialog,
+                dismissDialog = dismissDialog
-                navigateBack = navigateBack
             )
         }
 

app/src/main/java/ua/acclorite/book_story/ui/book_info/BookInfoEffects.kt

@@ -0,0 +1,97 @@
+/*
+ * Book's Story — free and open-source Material You eBook reader.
+ * Copyright (C) 2024-2025 Acclorite
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+package ua.acclorite.book_story.ui.book_info
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.ui.platform.LocalContext
+import kotlinx.coroutines.flow.SharedFlow
+import ua.acclorite.book_story.R
+import ua.acclorite.book_story.domain.model.library.Book
+import ua.acclorite.book_story.presentation.book_info.BookInfoEffect
+import ua.acclorite.book_story.presentation.history.HistoryScreen
+import ua.acclorite.book_story.presentation.reader.ReaderScreen
+import ua.acclorite.book_story.presentation.settings.LibrarySettingsScreen
+import ua.acclorite.book_story.ui.common.helpers.showToast
+import ua.acclorite.book_story.ui.navigator.LocalNavigator
+
+@Composable
+fun BookInfoEffects(effects: SharedFlow<BookInfoEffect>, book: Book) {
+    val navigator = LocalNavigator.current
+    val context = LocalContext.current
+
+    LaunchedEffect(effects, context, navigator, book) {
+        effects.collect { effect ->
+            when (effect) {
+                is BookInfoEffect.OnChangedCover -> {
+                    context.getString(R.string.cover_image_changed)
+                        .showToast(context = context)
+                }
+
+                is BookInfoEffect.OnErrorResetCover -> {
+                    context.getString(R.string.error_could_not_reset_cover)
+                        .showToast(context = context)
+                }
+
+                is BookInfoEffect.OnResetCover -> {
+                    context.getString(R.string.cover_reset)
+                        .showToast(context = context)
+                }
+
+                is BookInfoEffect.OnDeletedCover -> {
+                    context.getString(R.string.cover_image_deleted)
+                        .showToast(context = context)
+                }
+
+                is BookInfoEffect.OnTitleChanged -> {
+                    context.getString(R.string.title_changed)
+                        .showToast(context = context)
+                }
+
+                is BookInfoEffect.OnAuthorChanged -> {
+                    context.getString(R.string.author_changed)
+                        .showToast(context = context)
+                }
+
+                is BookInfoEffect.OnDescriptionChanged -> {
+                    context.getString(R.string.description_changed)
+                        .showToast(context = context)
+                }
+
+                is BookInfoEffect.OnPathChanged -> {
+                    context.getString(R.string.path_changed)
+                        .showToast(context = context)
+                }
+
+                is BookInfoEffect.OnBookDeleted -> {
+                    context.getString(R.string.book_deleted)
+                        .showToast(context = context)
+                }
+
+                is BookInfoEffect.OnBookMoved -> {
+                    context.getString(R.string.book_moved)
+                        .showToast(context = context)
+                }
+
+                is BookInfoEffect.OnNavigateBack -> {
+                    navigator.pop()
+                }
+
+                is BookInfoEffect.OnNavigateToLibrarySettings -> {
+                    navigator.push(LibrarySettingsScreen)
+                }
+
+                is BookInfoEffect.OnNavigateToReader -> {
+                    if (book.id != -1) {
+                        HistoryScreen.insertHistoryChannel.trySend(book.id)
+                        navigator.push(ReaderScreen(book.id))
+                    }
+                }
+            }
+        }
+    }
+}

app/src/main/java/ua/acclorite/book_story/ui/book_info/BookInfoLayout.kt

@@ -33,7 +33,7 @@ fun BookInfoLayout(
     showDescriptionDialog: (BookInfoEvent.OnShowDescriptionDialog) -> Unit,
     showMoveDialog: (BookInfoEvent.OnShowMoveDialog) -> Unit,
     showDeleteDialog: (BookInfoEvent.OnShowDeleteDialog) -> Unit,
-    navigateToReader: () -> Unit
+    navigateToReader: (BookInfoEvent.OnNavigateToReader) -> Unit
 ) {
     LazyColumnWithScrollbar(
         modifier = Modifier.fillMaxSize(),

app/src/main/java/ua/acclorite/book_story/ui/book_info/BookInfoLayoutButton.kt

@@ -17,12 +17,13 @@ import androidx.compose.ui.unit.dp
 import ua.acclorite.book_story.R
 import ua.acclorite.book_story.core.helpers.calculateProgress
 import ua.acclorite.book_story.domain.model.library.Book
+import ua.acclorite.book_story.presentation.book_info.BookInfoEvent
 import ua.acclorite.book_story.ui.common.components.common.StyledText
 
 @Composable
 fun BookInfoLayoutButton(
     book: Book,
-    navigateToReader: () -> Unit
+    navigateToReader: (BookInfoEvent.OnNavigateToReader) -> Unit
 ) {
     Button(
         modifier = Modifier
@@ -30,9 +31,7 @@ fun BookInfoLayoutButton(
             .padding(horizontal = 18.dp),
         shape = CircleShape,
         onClick = {
-            if (book.id != -1) {
+            navigateToReader(BookInfoEvent.OnNavigateToReader)
-                navigateToReader()
-            }
         }
     ) {
         StyledText(

app/src/main/java/ua/acclorite/book_story/ui/book_info/BookInfoMoveDialog.kt

@@ -14,7 +14,6 @@ import androidx.compose.runtime.derivedStateOf
 import androidx.compose.runtime.mutableStateListOf
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import ua.acclorite.book_story.R
@@ -31,9 +30,8 @@ fun BookInfoMoveDialog(
     categories: List<Category>,
     actionMoveDialog: (BookInfoEvent.OnActionMoveDialog) -> Unit,
     dismissDialog: (BookInfoEvent.OnDismissDialog) -> Unit,
-    navigateToLibrarySettings: () -> Unit
+    navigateToLibrarySettings: (BookInfoEvent.OnNavigateToLibrarySettings) -> Unit
 ) {
-    val context = LocalContext.current
     val selectedCategories = remember {
         mutableStateListOf<Category>().apply {
             clear()
@@ -53,14 +51,13 @@ fun BookInfoMoveDialog(
         onAction = {
             actionMoveDialog(
                 BookInfoEvent.OnActionMoveDialog(
-                    selectedCategories = selectedCategories,
+                    selectedCategories = selectedCategories
-                    context = context
                 )
             )
         },
         secondaryAction = stringResource(id = R.string.edit),
         onSecondaryAction = {
-            navigateToLibrarySettings()
+            navigateToLibrarySettings(BookInfoEvent.OnNavigateToLibrarySettings)
             dismissDialog(BookInfoEvent.OnDismissDialog)
         },
         withContent = true,

app/src/main/java/ua/acclorite/book_story/ui/book_info/BookInfoPathDialog.kt

@@ -7,7 +7,6 @@
 package ua.acclorite.book_story.ui.book_info
 
 import androidx.compose.runtime.Composable
-import androidx.compose.ui.platform.LocalContext
 import ua.acclorite.book_story.domain.model.library.Book
 import ua.acclorite.book_story.presentation.book_info.BookInfoEvent
 import ua.acclorite.book_story.ui.common.components.dialog.DialogWithTextField
@@ -18,7 +17,6 @@ fun BookInfoPathDialog(
     actionPathDialog: (BookInfoEvent.OnActionPathDialog) -> Unit,
     dismissDialog: (BookInfoEvent.OnDismissDialog) -> Unit
 ) {
-    val context = LocalContext.current
     DialogWithTextField(
         initialValue = book.filePath.trim(),
         lengthLimit = 10000,
@@ -29,8 +27,7 @@ fun BookInfoPathDialog(
             if (it.isBlank()) return@DialogWithTextField
             actionPathDialog(
                 BookInfoEvent.OnActionPathDialog(
-                    path = it.trim().replace("\n", ""),
+                    path = it.trim().replace("\n", "")
-                    context = context
                 )
             )
         }

app/src/main/java/ua/acclorite/book_story/ui/book_info/BookInfoScaffold.kt

@@ -30,8 +30,8 @@ fun BookInfoScaffold(
     showDescriptionDialog: (BookInfoEvent.OnShowDescriptionDialog) -> Unit,
     showMoveDialog: (BookInfoEvent.OnShowMoveDialog) -> Unit,
     showDeleteDialog: (BookInfoEvent.OnShowDeleteDialog) -> Unit,
-    navigateToReader: () -> Unit,
+    navigateToReader: (BookInfoEvent.OnNavigateToReader) -> Unit,
-    navigateBack: () -> Unit
+    navigateBack: (BookInfoEvent.OnNavigateBack) -> Unit
 ) {
     Scaffold(
         Modifier

app/src/main/java/ua/acclorite/book_story/ui/book_info/BookInfoTitleDialog.kt

@@ -7,7 +7,6 @@
 package ua.acclorite.book_story.ui.book_info
 
 import androidx.compose.runtime.Composable
-import androidx.compose.ui.platform.LocalContext
 import ua.acclorite.book_story.domain.model.library.Book
 import ua.acclorite.book_story.presentation.book_info.BookInfoEvent
 import ua.acclorite.book_story.ui.common.components.dialog.DialogWithTextField
@@ -18,7 +17,6 @@ fun BookInfoTitleDialog(
     actionTitleDialog: (BookInfoEvent.OnActionTitleDialog) -> Unit,
     dismissDialog: (BookInfoEvent.OnDismissDialog) -> Unit
 ) {
-    val context = LocalContext.current
     DialogWithTextField(
         initialValue = book.title,
         lengthLimit = 100,
@@ -29,8 +27,7 @@ fun BookInfoTitleDialog(
             if (it.isBlank()) return@DialogWithTextField
             actionTitleDialog(
                 BookInfoEvent.OnActionTitleDialog(
-                    title = it.trim().replace("\n", ""),
+                    title = it.trim().replace("\n", "")
-                    context = context
                 )
             )
         }

app/src/main/java/ua/acclorite/book_story/ui/book_info/BookInfoTopBar.kt

@@ -30,7 +30,7 @@ fun BookInfoTopBar(
     book: Book,
     listState: LazyListState,
     showDetailsBottomSheet: (BookInfoEvent.OnShowDetailsBottomSheet) -> Unit,
-    navigateBack: () -> Unit
+    navigateBack: (BookInfoEvent.OnNavigateBack) -> Unit
 ) {
     val firstVisibleItemIndex = remember {
         derivedStateOf {
@@ -49,7 +49,7 @@ fun BookInfoTopBar(
                 contentID = 0,
                 contentNavigationIcon = {
                     NavigatorBackIconButton {
-                        navigateBack()
+                        navigateBack(BookInfoEvent.OnNavigateBack)
                     }
                 },
                 contentTitle = {

app/src/main/java/ua/acclorite/book_story/ui/history/HistoryEffects.kt

@@ -33,7 +33,7 @@ fun HistoryEffects(
     val navigator = LocalNavigator.current
     val context = LocalContext.current
 
-    LaunchedEffect(Unit) {
+    LaunchedEffect(effects, context, navigator, focusRequester, snackbarState) {
         effects.collect { effect ->
             when (effect) {
                 is HistoryEffect.OnRequestFocus -> {