Library Error Screen PR from Tachi

Co-Authored-By: Programmer-0-0 <67505416+programmer-0-0@users.noreply.github.com>

app/src/main/java/eu/kanade/domain/DomainModule.kt

@@ -36,6 +36,7 @@ import mihon.domain.extensionrepo.service.ExtensionRepoService
 import mihon.domain.upcoming.interactor.GetUpcomingManga
 import tachiyomi.data.category.CategoryRepositoryImpl
 import tachiyomi.data.chapter.ChapterRepositoryImpl
+import tachiyomi.data.failed.FailedUpdatesRepositoryImpl
 import tachiyomi.data.history.HistoryRepositoryImpl
 import tachiyomi.data.manga.MangaRepositoryImpl
 import tachiyomi.data.release.ReleaseServiceImpl
@@ -61,6 +62,7 @@ import tachiyomi.domain.chapter.interactor.SetMangaDefaultChapterFlags
 import tachiyomi.domain.chapter.interactor.ShouldUpdateDbChapter
 import tachiyomi.domain.chapter.interactor.UpdateChapter
 import tachiyomi.domain.chapter.repository.ChapterRepository
+import tachiyomi.domain.failed.repository.FailedUpdatesRepository
 import tachiyomi.domain.history.interactor.GetHistory
 import tachiyomi.domain.history.interactor.GetNextChapters
 import tachiyomi.domain.history.interactor.GetTotalReadDuration
@@ -170,6 +172,8 @@ class DomainModule : InjektModule {
         addSingletonFactory<UpdatesRepository> { UpdatesRepositoryImpl(get()) }
         addFactory { GetUpdates(get()) }
 
+        addSingletonFactory<FailedUpdatesRepository> { FailedUpdatesRepositoryImpl(get()) }
+
         addSingletonFactory<SourceRepository> { SourceRepositoryImpl(get(), get()) }
         addSingletonFactory<StubSourceRepository> { StubSourceRepositoryImpl(get()) }
         addFactory { GetEnabledSources(get(), get()) }

app/src/main/java/eu/kanade/presentation/manga/components/MangaBottomActionMenu.kt

@@ -28,7 +28,9 @@ import androidx.compose.material.icons.outlined.BookmarkRemove
 import androidx.compose.material.icons.outlined.Delete
 import androidx.compose.material.icons.outlined.DoneAll
 import androidx.compose.material.icons.outlined.Download
+import androidx.compose.material.icons.outlined.Info
 import androidx.compose.material.icons.outlined.RemoveDone
+import androidx.compose.material.icons.outlined.VisibilityOff
 import androidx.compose.material3.Icon
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
@@ -51,6 +53,8 @@ import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 import eu.kanade.presentation.components.DownloadDropdownMenu
 import eu.kanade.presentation.manga.DownloadAction
+import eu.kanade.presentation.updates.failed.FailedUpdatesManga
+import eu.kanade.presentation.updates.failed.GroupByMode
 import eu.kanade.tachiyomi.R
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.delay
@@ -60,6 +64,7 @@ import tachiyomi.i18n.MR
 import tachiyomi.presentation.core.i18n.stringResource
 import kotlin.time.Duration.Companion.seconds
 
+@OptIn(ExperimentalStdlibApi::class)
 @Composable
 fun MangaBottomActionMenu(
     visible: Boolean,
@@ -218,6 +223,7 @@ private fun RowScope.Button(
     }
 }
 
+@OptIn(ExperimentalStdlibApi::class)
 @Composable
 fun LibraryBottomActionMenu(
     visible: Boolean,
@@ -308,3 +314,73 @@ fun LibraryBottomActionMenu(
         }
     }
 }
+
+@OptIn(ExperimentalStdlibApi::class)
+@Composable
+fun FailedUpdatesBottomActionMenu(
+    visible: Boolean,
+    modifier: Modifier = Modifier,
+    onDeleteClicked: () -> Unit,
+    onDismissClicked: () -> Unit,
+    onInfoClicked: (String) -> Unit,
+    selected: List<FailedUpdatesManga>,
+    groupingMode: GroupByMode,
+) {
+    AnimatedVisibility(
+        visible = visible,
+        enter = expandVertically(animationSpec = tween(delayMillis = 300)),
+        exit = shrinkVertically(animationSpec = tween()),
+    ) {
+        val scope = rememberCoroutineScope()
+        Surface(
+            modifier = modifier,
+            shape = MaterialTheme.shapes.large.copy(bottomEnd = ZeroCornerSize, bottomStart = ZeroCornerSize),
+            tonalElevation = 3.dp,
+        ) {
+            val haptic = LocalHapticFeedback.current
+            val confirm = remember { mutableStateListOf(false, false, false) }
+            var resetJob: Job? = remember { null }
+            val onLongClickItem: (Int) -> Unit = { toConfirmIndex ->
+                haptic.performHapticFeedback(HapticFeedbackType.LongPress)
+                (0..<3).forEach { i -> confirm[i] = i == toConfirmIndex }
+                resetJob?.cancel()
+                resetJob = scope.launch {
+                    delay(1.seconds)
+                    if (isActive) confirm[toConfirmIndex] = false
+                }
+            }
+            Row(
+                modifier = Modifier
+                    .windowInsetsPadding(
+                        WindowInsets.navigationBars
+                            .only(WindowInsetsSides.Bottom),
+                    )
+                    .padding(horizontal = 8.dp, vertical = 12.dp),
+            ) {
+                Button(
+                    title = stringResource(R.string.action_delete),
+                    icon = Icons.Outlined.Delete,
+                    toConfirm = confirm[0],
+                    onLongClick = { onLongClickItem(0) },
+                    onClick = onDeleteClicked,
+                )
+                Button(
+                    title = stringResource(R.string.action_dismiss),
+                    icon = Icons.Outlined.VisibilityOff,
+                    toConfirm = confirm[1],
+                    onLongClick = { onLongClickItem(1) },
+                    onClick = onDismissClicked,
+                )
+                if (groupingMode == GroupByMode.NONE && selected.size <= 1) {
+                    Button(
+                        title = stringResource(R.string.action_info),
+                        icon = Icons.Outlined.Info,
+                        toConfirm = confirm[2],
+                        onLongClick = { onLongClickItem(2) },
+                        onClick = { onInfoClicked(selected[0].errorMessage) },
+                    )
+                }
+            }
+        }
+    }
+}

app/src/main/java/eu/kanade/presentation/updates/UpdatesScreen.kt

@@ -8,6 +8,8 @@ import androidx.compose.material.icons.outlined.CalendarMonth
 import androidx.compose.material.icons.outlined.FlipToBack
 import androidx.compose.material.icons.outlined.Refresh
 import androidx.compose.material.icons.outlined.SelectAll
+import androidx.compose.material.icons.rounded.Warning
+import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.SnackbarHost
 import androidx.compose.material3.SnackbarHostState
 import androidx.compose.material3.TopAppBarScrollBehavior
@@ -50,12 +52,14 @@ fun UpdateScreen(
     onInvertSelection: () -> Unit,
     onCalendarClicked: () -> Unit,
     onUpdateLibrary: () -> Boolean,
+    onUpdateWarning: () -> Unit,
     onDownloadChapter: (List<UpdatesItem>, ChapterDownloadAction) -> Unit,
     onMultiBookmarkClicked: (List<UpdatesItem>, bookmark: Boolean) -> Unit,
     onMultiMarkAsReadClicked: (List<UpdatesItem>, read: Boolean) -> Unit,
     onMultiDeleteClicked: (List<UpdatesItem>) -> Unit,
     onUpdateSelected: (UpdatesItem, Boolean, Boolean, Boolean) -> Unit,
     onOpenChapter: (UpdatesItem) -> Unit,
+    hasFailedUpdates: Boolean,
 ) {
     BackHandler(enabled = state.selectionMode, onBack = { onSelectAll(false) })
 
@@ -64,11 +68,13 @@ fun UpdateScreen(
             UpdatesAppBar(
                 onCalendarClicked = { onCalendarClicked() },
                 onUpdateLibrary = { onUpdateLibrary() },
+                onUpdateWarning = onUpdateWarning,
                 actionModeCounter = state.selected.size,
                 onSelectAll = { onSelectAll(true) },
                 onInvertSelection = { onInvertSelection() },
                 onCancelActionMode = { onSelectAll(false) },
                 scrollBehavior = scrollBehavior,
+                hasFailedUpdates = hasFailedUpdates,
             )
         },
         bottomBar = {
@@ -131,6 +137,7 @@ fun UpdateScreen(
 private fun UpdatesAppBar(
     onCalendarClicked: () -> Unit,
     onUpdateLibrary: () -> Unit,
+    onUpdateWarning: () -> Unit,
     // For action mode
     actionModeCounter: Int,
     onSelectAll: () -> Unit,
@@ -138,25 +145,33 @@ private fun UpdatesAppBar(
     onCancelActionMode: () -> Unit,
     scrollBehavior: TopAppBarScrollBehavior,
     modifier: Modifier = Modifier,
+    hasFailedUpdates: Boolean,
 ) {
+    val warningIconTint = MaterialTheme.colorScheme.error
     AppBar(
         modifier = modifier,
         title = stringResource(MR.strings.label_recent_updates),
         actions = {
-            AppBarActions(
+            val actions = mutableListOf<AppBar.Action>()
-                persistentListOf(
+            if (hasFailedUpdates) { // only add the warning icon if it is enabled
-                    AppBar.Action(
+                actions += AppBar.Action(
-                        title = stringResource(MR.strings.action_view_upcoming),
+                    title = stringResource(R.string.action_update_warning),
-                        icon = Icons.Outlined.CalendarMonth,
+                    icon = Icons.Rounded.Warning,
-                        onClick = onCalendarClicked,
+                    onClick = onUpdateWarning,
-                    ),
+                    iconTint = warningIconTint,
-                    AppBar.Action(
+                )
-                        title = stringResource(MR.strings.action_update_library),
+            }
-                        icon = Icons.Outlined.Refresh,
+            actions += AppBar.Action(
-                        onClick = onUpdateLibrary,
+                title = stringResource(MR.strings.action_view_upcoming),
-                    ),
+                icon = Icons.Outlined.CalendarMonth,
-                ),
+                onClick = onCalendarClicked,
             )
+            actions += AppBar.Action(
+                title = stringResource(R.string.action_update_library),
+                icon = Icons.Outlined.Refresh,
+                onClick = onUpdateLibrary,
+            )
+            AppBarActions(actions)
         },
         actionModeCounter = actionModeCounter,
         onCancelActionMode = onCancelActionMode,

app/src/main/java/eu/kanade/presentation/updates/failed/FailedUpdatesContent.kt

@@ -0,0 +1,495 @@
+package eu.kanade.presentation.updates.failed
+
+import androidx.compose.animation.AnimatedVisibility
+import androidx.compose.animation.animateContentSize
+import androidx.compose.animation.core.Spring
+import androidx.compose.animation.core.animateFloatAsState
+import androidx.compose.animation.core.spring
+import androidx.compose.animation.core.tween
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.combinedClickable
+import androidx.compose.foundation.interaction.MutableInteractionSource
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.aspectRatio
+import androidx.compose.foundation.layout.fillMaxHeight
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.lazy.LazyListScope
+import androidx.compose.foundation.lazy.LazyListState
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.shape.CornerSize
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.KeyboardArrowUp
+import androidx.compose.material.icons.rounded.Warning
+import androidx.compose.material.ripple.rememberRipple
+import androidx.compose.material3.CardDefaults
+import androidx.compose.material3.ElevatedCard
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.Icon
+import androidx.compose.material3.LocalContentColor
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.material3.minimumInteractiveComponentSize
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableIntStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.draw.rotate
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.ImageBitmap
+import androidx.compose.ui.graphics.asImageBitmap
+import androidx.compose.ui.hapticfeedback.HapticFeedbackType
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalHapticFeedback
+import androidx.compose.ui.semantics.Role
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.ui.util.fastAny
+import androidx.core.graphics.drawable.toBitmap
+import eu.kanade.presentation.manga.components.MangaCover
+import eu.kanade.tachiyomi.extension.ExtensionManager
+import eu.kanade.tachiyomi.util.system.LocaleHelper
+import tachiyomi.domain.source.model.Source
+import tachiyomi.presentation.core.components.FastScrollLazyColumn
+import tachiyomi.presentation.core.components.Pill
+import tachiyomi.presentation.core.components.material.padding
+import tachiyomi.presentation.core.util.secondaryItemAlpha
+import tachiyomi.presentation.core.util.selectedBackground
+import uy.kohesive.injekt.Injekt
+import uy.kohesive.injekt.api.get
+
+fun LazyListScope.failedUpdatesUiItems(
+    items: List<FailedUpdatesManga>,
+    selectionMode: Boolean,
+    onSelected: (FailedUpdatesManga, Boolean, Boolean, Boolean) -> Unit,
+    onClick: (FailedUpdatesManga) -> Unit,
+    groupingMode: GroupByMode,
+) {
+    items(
+        items = items,
+        key = { it.libraryManga.manga.id },
+    ) { item ->
+        Box(modifier = Modifier.animateItemPlacement(animationSpec = tween(300))) {
+            FailedUpdatesUiItem(
+                modifier = Modifier,
+                selected = item.selected,
+                onLongClick = {
+                    onSelected(item, !item.selected, true, true)
+                },
+                onClick = {
+                    when {
+                        selectionMode -> onSelected(item, !item.selected, true, false)
+                        else -> onClick(item)
+                    }
+                },
+                manga = item,
+                groupingMode = groupingMode,
+            )
+        }
+    }
+}
+
+@Composable
+private fun FailedUpdatesUiItem(
+    modifier: Modifier,
+    manga: FailedUpdatesManga,
+    selected: Boolean,
+    onClick: () -> Unit,
+    onLongClick: () -> Unit,
+    groupingMode: GroupByMode = GroupByMode.BY_SOURCE,
+) {
+    val haptic = LocalHapticFeedback.current
+    val textAlpha = 1f
+    Row(
+        modifier = modifier
+            .selectedBackground(selected)
+            .combinedClickable(
+                onClick = onClick,
+                onLongClick = {
+                    onLongClick()
+                    haptic.performHapticFeedback(HapticFeedbackType.LongPress)
+                },
+            )
+            .height(56.dp)
+            .padding(start = MaterialTheme.padding.medium),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        MangaCover.Square(
+            modifier = Modifier
+                .padding(vertical = 6.dp)
+                .fillMaxHeight(),
+            data = manga.libraryManga.manga,
+        )
+
+        Column(
+            modifier = Modifier
+                .padding(horizontal = MaterialTheme.padding.medium)
+                .weight(1f)
+                .animateContentSize(),
+        ) {
+            Text(
+                text = manga.libraryManga.manga.title,
+                maxLines = 1,
+                style = MaterialTheme.typography.bodyMedium,
+                color = LocalContentColor.current.copy(alpha = textAlpha),
+                overflow = TextOverflow.Ellipsis,
+            )
+            if (groupingMode == GroupByMode.NONE) {
+                Row(verticalAlignment = Alignment.CenterVertically) {
+                    var textHeight by remember { mutableIntStateOf(0) }
+                    Text(
+                        text = manga.simplifiedErrorMessage,
+                        maxLines = if (selected) Int.MAX_VALUE else 1,
+                        style = MaterialTheme.typography.bodySmall,
+                        color = MaterialTheme.colorScheme.error,
+                        onTextLayout = { textHeight = it.size.height },
+                        modifier = Modifier
+                            .weight(weight = 1f, fill = false),
+                        overflow = TextOverflow.Ellipsis,
+                    )
+                }
+            }
+        }
+    }
+}
+
+fun returnSourceIcon(id: Long): ImageBitmap? {
+    return Injekt.get<ExtensionManager>().getAppIconForSource(id)
+        ?.toBitmap()
+        ?.asImageBitmap()
+}
+
+fun LazyListScope.failedUpdatesGroupUiItem(
+    errorMessageMap: Map<Pair<String, String>, List<FailedUpdatesManga>>,
+    selectionMode: Boolean,
+    onSelected: (FailedUpdatesManga, Boolean, Boolean, Boolean) -> Unit,
+    onMangaClick: (FailedUpdatesManga) -> Unit,
+    id: String,
+    onGroupSelected: (List<FailedUpdatesManga>) -> Unit,
+    onExpandedMapChange: (GroupKey, Boolean) -> Unit,
+    expanded: Map<GroupKey, Boolean>,
+    showLanguageInContent: Boolean = true,
+    sourcesCount: List<Pair<Source, Long>>,
+    onClickIcon: (String) -> Unit = {},
+    onLongClickIcon: (String) -> Unit = {},
+) {
+    item(
+        key = errorMessageMap.values.flatten().find { it.source.name == id }!!.source.id,
+    ) {
+        ElevatedCard(
+            elevation = CardDefaults.cardElevation(
+                defaultElevation = 2.dp,
+            ),
+            shape = RoundedCornerShape(corner = CornerSize(15.dp)),
+            modifier = Modifier
+                .padding(vertical = 9.dp)
+                .animateItemPlacement(
+                    spring(
+                        dampingRatio = Spring.DampingRatioMediumBouncy,
+                        stiffness = Spring.StiffnessLow,
+                    ),
+                )
+                .fillMaxWidth(),
+        ) {
+            Column {
+                Row(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .selectedBackground(
+                            !errorMessageMap.values
+                                .flatten()
+                                .fastAny { !it.selected },
+                        )
+                        .combinedClickable(
+                            onClick = {
+                                val categoryKey = GroupKey(id, Pair("", ""))
+                                if (!expanded.containsKey(categoryKey)) {
+                                    onExpandedMapChange(categoryKey, true)
+                                }
+                                onExpandedMapChange(categoryKey, !expanded[categoryKey]!!)
+                            },
+                            onLongClick = { onGroupSelected(errorMessageMap.values.flatten()) },
+                        )
+                        .padding(
+                            horizontal = 12.dp,
+                            vertical = 12.dp,
+                        ),
+                    verticalAlignment = Alignment.CenterVertically,
+                ) {
+                    val item = errorMessageMap.values.flatten().find { it.source.name == id }!!.source
+                    val sourceLangString =
+                        LocaleHelper.getSourceDisplayName(item.lang, LocalContext.current)
+                            .takeIf { showLanguageInContent }
+                    val icon = returnSourceIcon(item.id)
+                    if (icon != null) {
+                        Image(
+                            bitmap = icon,
+                            contentDescription = null,
+                            modifier = Modifier
+                                .height(50.dp)
+                                .aspectRatio(1f),
+                        )
+                    }
+                    Column(
+                        modifier = Modifier
+                            .padding(horizontal = MaterialTheme.padding.medium)
+                            .weight(1f),
+                    ) {
+                        Text(
+                            text = item.name.ifBlank { item.id.toString() },
+                            maxLines = 1,
+                            overflow = TextOverflow.Ellipsis,
+                            fontWeight = FontWeight.Medium,
+                            fontSize = 16.sp,
+                            lineHeight = 24.sp,
+                            letterSpacing = 0.15.sp,
+                        )
+                        Row(
+                            horizontalArrangement = Arrangement.spacedBy(MaterialTheme.padding.small),
+                            verticalAlignment = Alignment.CenterVertically,
+                        ) {
+                            if (sourceLangString != null) {
+                                Text(
+                                    modifier = Modifier.secondaryItemAlpha(),
+                                    text = sourceLangString,
+                                    maxLines = 1,
+                                    overflow = TextOverflow.Ellipsis,
+                                    style = MaterialTheme.typography.bodySmall,
+                                )
+                            }
+                        }
+                    }
+                    val mangaCount = errorMessageMap.values.flatten().size
+                    val sourceCount = sourcesCount.find { it.first.id == item.id }!!.second
+                    Pill(
+                        text = "$mangaCount/$sourceCount",
+                        modifier = Modifier.padding(start = 4.dp),
+                        color = MaterialTheme.colorScheme.error,
+                        isCustomText = true,
+                    )
+                    val rotation by animateFloatAsState(
+                        targetValue = if (expanded[GroupKey(id, Pair("", ""))] == true) 0f else -180f,
+                        animationSpec = tween(500),
+                        label = "",
+                    )
+                    Icon(
+                        imageVector = Icons.Filled.KeyboardArrowUp,
+                        modifier = Modifier
+                            .rotate(rotation)
+                            .padding(vertical = 8.dp, horizontal = 14.dp),
+                        contentDescription = null,
+                    )
+                }
+                Column {
+                    errorMessageMap.forEach { (errorMessagePair, items) ->
+                        val errorMessageHeaderId = GroupKey(id, errorMessagePair)
+                        AnimatedVisibility(
+                            modifier = Modifier,
+                            visible = expanded[GroupKey(id, Pair("", ""))] == true,
+                        ) {
+                            HorizontalDivider(thickness = 0.5.dp, color = Color.Gray)
+                            Row(
+                                modifier = Modifier
+                                    .fillMaxWidth()
+                                    .selectedBackground(!items.fastAny { !it.selected })
+                                    .combinedClickable(
+                                        onClick =
+                                        {
+                                            if (expanded[errorMessageHeaderId] == null) {
+                                                onExpandedMapChange(errorMessageHeaderId, true)
+                                            } else {
+                                                onExpandedMapChange(errorMessageHeaderId, !expanded[errorMessageHeaderId]!!)
+                                            }
+                                        },
+                                        onLongClick =
+                                        { onGroupSelected(items) },
+                                    )
+                                    .padding(
+                                        horizontal = 12.dp,
+                                        vertical = 12.dp,
+                                    ),
+                                verticalAlignment = Alignment.CenterVertically,
+                            ) {
+                                CustomIconButton(
+                                    onClick = {
+                                        onClickIcon(
+                                            errorMessagePair.first,
+                                        )
+                                    },
+                                    onLongClick = {
+                                        onLongClickIcon(
+                                            errorMessagePair.first,
+                                        )
+                                    },
+                                    modifier = Modifier,
+                                    content = {
+                                        Icon(
+                                            imageVector = Icons.Rounded.Warning,
+                                            contentDescription = "",
+                                            tint = MaterialTheme.colorScheme.error,
+                                        )
+                                    },
+                                )
+                                Column(
+                                    modifier = Modifier
+                                        .padding(horizontal = MaterialTheme.padding.medium)
+                                        .weight(1f),
+                                ) {
+                                    Text(
+                                        errorMessagePair.second.ifEmpty {
+                                            errorMessagePair.first.substringAfter(":").substring(1)
+                                        },
+                                        maxLines = 2,
+                                        color = MaterialTheme.colorScheme.error,
+                                        overflow = TextOverflow.Ellipsis,
+                                        fontWeight = FontWeight.Medium,
+                                        fontSize = 14.sp,
+                                        lineHeight = 24.sp,
+                                        letterSpacing = 0.15.sp,
+                                    )
+                                }
+                                val rotation by animateFloatAsState(
+                                    targetValue = if (expanded[errorMessageHeaderId] == true) 0f else -180f,
+                                    animationSpec = tween(500),
+                                    label = "",
+                                )
+                                Box(
+                                    modifier = Modifier
+                                        .padding(
+                                            top = 8.dp,
+                                            bottom = 8.dp,
+                                            start = 10.dp,
+                                            end = 14.1.dp,
+                                        )
+                                        .rotate(rotation),
+                                ) {
+                                    Icon(
+                                        imageVector = Icons.Filled.KeyboardArrowUp,
+                                        contentDescription = null,
+                                    )
+                                }
+                            }
+                        }
+                        Column {
+                            items.forEachIndexed { index, item ->
+                                val isLastItem = index == items.lastIndex
+                                AnimatedVisibility(
+                                    modifier = Modifier,
+                                    visible = expanded[errorMessageHeaderId] == true && expanded[GroupKey(id, Pair("", ""))] == true,
+                                ) {
+                                    FailedUpdatesUiItem(
+                                        modifier = Modifier
+                                            .padding(bottom = if (isLastItem) 5.dp else 0.dp),
+                                        selected = item.selected,
+                                        onLongClick = {
+                                            onSelected(item, !item.selected, true, true)
+                                        },
+                                        onClick = {
+                                            when {
+                                                selectionMode -> onSelected(
+                                                    item,
+                                                    !item.selected,
+                                                    true,
+                                                    false,
+                                                )
+
+                                                else -> onMangaClick(item)
+                                            }
+                                        },
+                                        manga = item,
+                                    )
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun CustomIconButton(
+    onClick: () -> Unit,
+    onLongClick: () -> Unit,
+    modifier: Modifier = Modifier,
+    enabled: Boolean = true,
+    interactionSource: MutableInteractionSource = remember { MutableInteractionSource() },
+    content: @Composable () -> Unit,
+) {
+    Box(
+        modifier = modifier
+            .minimumInteractiveComponentSize()
+            .size(40.dp)
+            .clip(CircleShape)
+            .combinedClickable(
+                onClick = onClick,
+                onLongClick = onLongClick,
+                enabled = enabled,
+                role = Role.Button,
+                interactionSource = interactionSource,
+                indication = rememberRipple(
+                    bounded = false,
+                    radius = 20.dp,
+                ),
+            ),
+        contentAlignment = Alignment.Center,
+    ) {
+        CompositionLocalProvider(content = content)
+    }
+}
+
+@Composable
+fun CategoryList(
+    contentPadding: PaddingValues,
+    selectionMode: Boolean,
+    onMangaClick: (FailedUpdatesManga) -> Unit,
+    onGroupSelected: (List<FailedUpdatesManga>) -> Unit,
+    onSelected: (FailedUpdatesManga, Boolean, Boolean, Boolean) -> Unit,
+    categoryMap: Map<String, Map<Pair<String, String>, List<FailedUpdatesManga>>>,
+    onExpandedMapChange: (GroupKey, Boolean) -> Unit,
+    expanded: Map<GroupKey, Boolean>,
+    sourcesCount: List<Pair<Source, Long>>,
+    onClickIcon: (String) -> Unit = {},
+    onLongClickIcon: (String) -> Unit = {},
+    lazyListState: LazyListState,
+) {
+    FastScrollLazyColumn(
+        contentPadding = contentPadding,
+        modifier = Modifier
+            .fillMaxHeight()
+            .padding(horizontal = 10.dp),
+        state = lazyListState,
+    ) {
+        categoryMap.forEach { (category, errorMessageMap) ->
+            failedUpdatesGroupUiItem(
+                id = category,
+                errorMessageMap = errorMessageMap,
+                selectionMode = selectionMode,
+                onMangaClick = onMangaClick,
+                onSelected = onSelected,
+                onGroupSelected = onGroupSelected,
+                onExpandedMapChange = onExpandedMapChange,
+                expanded = expanded,
+                sourcesCount = sourcesCount,
+                onClickIcon = onClickIcon,
+                onLongClickIcon = onLongClickIcon,
+            )
+        }
+    }
+}

app/src/main/java/eu/kanade/presentation/updates/failed/FailedUpdatesDialog.kt

@@ -0,0 +1,45 @@
+package eu.kanade.presentation.updates.failed
+
+import androidx.compose.foundation.layout.Column
+import androidx.compose.material3.AlertDialog
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.sp
+import eu.kanade.tachiyomi.R
+
+@Composable
+fun ErrorMessageDialog(
+    onDismissRequest: () -> Unit,
+    onCopyClick: () -> Unit,
+    errorMessage: String,
+) {
+    AlertDialog(
+        text = {
+            Column {
+                Text(
+                    text = "${stringResource(R.string.label_error_message)}:\n",
+                    fontSize = 20.sp,
+                    textAlign = TextAlign.Justify,
+                )
+                Text(text = errorMessage)
+            }
+        },
+        onDismissRequest = onDismissRequest,
+        confirmButton = {
+            TextButton(onClick = {
+                onCopyClick()
+                onDismissRequest()
+            },) {
+                Text(text = stringResource(R.string.copy))
+            }
+        },
+        dismissButton = {
+            TextButton(onClick = onDismissRequest) {
+                Text(text = stringResource(R.string.action_cancel))
+            }
+        },
+    )
+}

app/src/main/java/eu/kanade/presentation/updates/failed/FailedUpdatesScreen.kt

@@ -0,0 +1,428 @@
+package eu.kanade.presentation.updates.failed
+
+import androidx.activity.compose.BackHandler
+import androidx.compose.animation.AnimatedVisibility
+import androidx.compose.animation.fadeIn
+import androidx.compose.animation.fadeOut
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.lazy.rememberLazyListState
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.outlined.ArrowLeft
+import androidx.compose.material.icons.outlined.ArrowRight
+import androidx.compose.material.icons.outlined.FlipToBack
+import androidx.compose.material.icons.outlined.HelpOutline
+import androidx.compose.material.icons.outlined.SelectAll
+import androidx.compose.material.icons.outlined.Sort
+import androidx.compose.material3.DropdownMenuItem
+import androidx.compose.material3.Icon
+import androidx.compose.material3.LocalContentColor
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBarScrollBehavior
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalLayoutDirection
+import androidx.compose.ui.platform.LocalUriHandler
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.LayoutDirection
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import cafe.adriel.voyager.core.model.rememberScreenModel
+import cafe.adriel.voyager.navigator.LocalNavigator
+import cafe.adriel.voyager.navigator.currentOrThrow
+import eu.kanade.presentation.components.AppBar
+import eu.kanade.presentation.components.AppBarActions
+import eu.kanade.presentation.components.DropdownMenu
+import eu.kanade.presentation.components.NestedMenuItem
+import eu.kanade.presentation.library.DeleteLibraryMangaDialog
+import eu.kanade.presentation.manga.components.FailedUpdatesBottomActionMenu
+import eu.kanade.presentation.util.Screen
+import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.ui.manga.MangaScreen
+import eu.kanade.tachiyomi.util.system.copyToClipboard
+import tachiyomi.domain.manga.model.Manga
+import tachiyomi.presentation.core.components.FastScrollLazyColumn
+import tachiyomi.presentation.core.components.Pill
+import tachiyomi.presentation.core.components.SortItem
+import tachiyomi.presentation.core.components.material.ExtendedFloatingActionButton
+import tachiyomi.presentation.core.components.material.Scaffold
+import tachiyomi.presentation.core.screens.EmptyScreen
+import tachiyomi.presentation.core.screens.LoadingScreen
+import tachiyomi.presentation.core.util.isScrolledToEnd
+import tachiyomi.presentation.core.util.isScrollingUp
+import tachiyomi.source.local.isLocal
+
+class FailedUpdatesScreen : Screen() {
+    @Composable
+    override fun Content() {
+        val navigator = LocalNavigator.currentOrThrow
+        val context = LocalContext.current
+        val uriHandler = LocalUriHandler.current
+
+        val screenModel = rememberScreenModel { FailedUpdatesScreenModel(context) }
+        val state by screenModel.state.collectAsState()
+        val failedUpdatesListState = rememberLazyListState()
+
+        val previousGroupByMode = remember { mutableStateOf(state.groupByMode) }
+
+        Scaffold(
+            topBar = { scrollBehavior ->
+                FailedUpdatesAppBar(
+                    groupByMode = state.groupByMode,
+                    items = state.items,
+                    selected = state.selected,
+                    onSelectAll = { screenModel.toggleAllSelection(true) },
+                    onDismissAll = { screenModel.dismissManga(state.items) },
+                    isAllExpanded = state.expanded.values.all { it },
+                    onExpandAll = { screenModel.expandAll() },
+                    onContractAll = { screenModel.contractAll() },
+                    onInvertSelection = { screenModel.invertSelection() },
+                    onCancelActionMode = { screenModel.toggleAllSelection(false) },
+                    scrollBehavior = scrollBehavior,
+                    onClickGroup = screenModel::runGroupBy,
+                    onClickSort = screenModel::runSortAction,
+                    sortState = state.sortMode,
+                    descendingOrder = state.descendingOrder,
+                    navigateUp = navigator::pop,
+                    errorCount = state.items.size,
+                )
+            },
+            bottomBar = {
+                FailedUpdatesBottomActionMenu(
+                    visible = state.selectionMode,
+                    onDeleteClicked = { screenModel.openDeleteMangaDialog(state.selected) },
+                    onDismissClicked = { screenModel.dismissManga(state.selected) },
+                    onInfoClicked = { errorMessage ->
+                        screenModel.openErrorMessageDialog(errorMessage)
+                    },
+                    selected = state.selected,
+                    groupingMode = state.groupByMode,
+                )
+            },
+            floatingActionButton = {
+                AnimatedVisibility(
+                    visible = state.items.isNotEmpty(),
+                    enter = fadeIn(),
+                    exit = fadeOut(),
+                ) {
+                    ExtendedFloatingActionButton(
+                        text = { Text(text = stringResource(R.string.label_help)) },
+                        icon = { Icon(imageVector = Icons.Outlined.HelpOutline, contentDescription = null) },
+                        onClick = { uriHandler.openUri("https://tachiyomi.org/help/guides/troubleshooting") },
+                        expanded = failedUpdatesListState.isScrollingUp() || failedUpdatesListState.isScrolledToEnd(),
+                    )
+                }
+            },
+        ) { contentPadding ->
+            when {
+                state.isLoading -> LoadingScreen(modifier = Modifier.padding(contentPadding))
+
+                state.items.isEmpty() -> EmptyScreen(
+                    textResource = R.string.information_no_update_errors,
+                    modifier = Modifier.padding(contentPadding),
+                    happyFace = true,
+                )
+
+                else -> {
+                    when (state.groupByMode) {
+                        GroupByMode.NONE -> {
+                            FastScrollLazyColumn(
+                                contentPadding = contentPadding,
+                                state = failedUpdatesListState,
+                            ) {
+                                failedUpdatesUiItems(
+                                    items = state.items,
+                                    selectionMode = state.selectionMode,
+                                    onClick = { item ->
+                                        navigator.push(
+                                            MangaScreen(item.libraryManga.manga.id),
+                                        )
+                                    },
+                                    onSelected = screenModel::toggleSelection,
+                                    groupingMode = state.groupByMode,
+                                )
+                            }
+                        }
+
+                        GroupByMode.BY_SOURCE -> {
+                            val categoryMap = screenModel.categoryMap(
+                                state.items,
+                                GroupByMode.BY_SOURCE,
+                                state.sortMode,
+                                state.descendingOrder,
+                            )
+
+                            LaunchedEffect(state.groupByMode) {
+                                val currentGroupByMode = state.groupByMode
+
+                                if (previousGroupByMode.value != currentGroupByMode) {
+                                    screenModel.initializeExpandedMap(categoryMap)
+                                }
+
+                                previousGroupByMode.value = currentGroupByMode
+                            }
+
+                            CategoryList(
+                                contentPadding = contentPadding,
+                                selectionMode = state.selectionMode,
+                                onMangaClick = { item ->
+                                    navigator.push(
+                                        MangaScreen(item.libraryManga.manga.id),
+                                    )
+                                },
+                                onGroupSelected = screenModel::groupSelection,
+                                onSelected = { item, selected, userSelected, fromLongPress ->
+                                    screenModel.toggleSelection(item, selected, userSelected, fromLongPress, true)
+                                },
+                                categoryMap = categoryMap,
+                                onExpandedMapChange = screenModel::updateExpandedMap,
+                                expanded = state.expanded,
+                                sourcesCount = state.sourcesCount,
+                                onClickIcon = { errorMessage ->
+                                    screenModel.openErrorMessageDialog(errorMessage)
+                                },
+                                onLongClickIcon = { errorMessage ->
+                                    context.copyToClipboard(errorMessage, errorMessage)
+                                },
+                                lazyListState = failedUpdatesListState,
+                            )
+                        }
+                    }
+                }
+            }
+        }
+        val onDismissRequest = screenModel::closeDialog
+        when (val dialog = state.dialog) {
+            is Dialog.DeleteManga -> {
+                DeleteLibraryMangaDialog(
+                    containsLocalManga = dialog.manga.any(Manga::isLocal),
+                    onDismissRequest = onDismissRequest,
+                    onConfirm = { deleteManga, deleteChapter ->
+                        screenModel.removeMangas(dialog.manga, deleteManga, deleteChapter)
+                        screenModel.toggleAllSelection(false)
+                    },
+                )
+            }
+            is Dialog.ShowErrorMessage -> {
+                ErrorMessageDialog(
+                    onDismissRequest = onDismissRequest,
+                    onCopyClick = {
+                        context.copyToClipboard(dialog.errorMessage, dialog.errorMessage)
+                        screenModel.toggleAllSelection(false)
+                    },
+                    errorMessage = dialog.errorMessage,
+                )
+            }
+            null -> {}
+        }
+    }
+}
+
+@Composable
+private fun FailedUpdatesAppBar(
+    groupByMode: GroupByMode,
+    items: List<FailedUpdatesManga>,
+    modifier: Modifier = Modifier,
+    selected: List<FailedUpdatesManga>,
+    onSelectAll: () -> Unit,
+    onInvertSelection: () -> Unit,
+    onCancelActionMode: () -> Unit,
+    onClickSort: (SortingMode) -> Unit,
+    onClickGroup: (GroupByMode) -> Unit,
+    onDismissAll: () -> Unit,
+    isAllExpanded: Boolean,
+    onExpandAll: () -> Unit,
+    onContractAll: () -> Unit,
+    scrollBehavior: TopAppBarScrollBehavior,
+    sortState: SortingMode,
+    descendingOrder: Boolean? = null,
+    navigateUp: (() -> Unit)?,
+    errorCount: Int,
+) {
+    if (selected.isNotEmpty()) {
+        FailedUpdatesActionAppBar(
+            modifier = modifier,
+            onSelectAll = onSelectAll,
+            onInvertSelection = onInvertSelection,
+            onCancelActionMode = onCancelActionMode,
+            scrollBehavior = scrollBehavior,
+            navigateUp = navigateUp,
+            actionModeCounter = selected.size,
+        )
+        BackHandler(
+            onBack = onCancelActionMode,
+        )
+    } else {
+        AppBar(
+            navigateUp = navigateUp,
+            titleContent = {
+                Row(verticalAlignment = Alignment.CenterVertically) {
+                    Text(
+                        text = stringResource(R.string.label_failed_updates),
+                        maxLines = 1,
+                        modifier = Modifier.weight(1f, false),
+                        overflow = TextOverflow.Ellipsis,
+                    )
+                    if (errorCount > 0) {
+                        val pillAlpha = if (isSystemInDarkTheme()) 0.12f else 0.08f
+                        Pill(
+                            text = "$errorCount",
+                            modifier = Modifier.padding(start = 4.dp),
+                            color = MaterialTheme.colorScheme.onBackground
+                                .copy(alpha = pillAlpha),
+                            fontSize = 14.sp,
+                        )
+                    }
+                }
+            },
+            actions = {
+                if (items.isNotEmpty()) {
+                    val filterTint = LocalContentColor.current
+                    var sortExpanded by remember { mutableStateOf(false) }
+                    val onSortDismissRequest = { sortExpanded = false }
+                    var mainExpanded by remember { mutableStateOf(false) }
+                    val onDismissRequest = { mainExpanded = false }
+                    SortDropdownMenu(
+                        expanded = sortExpanded,
+                        onDismissRequest = onSortDismissRequest,
+                        onSortClicked = onClickSort,
+                        sortState = sortState,
+                        descendingOrder = descendingOrder,
+                    )
+                    DropdownMenu(expanded = mainExpanded, onDismissRequest = onDismissRequest) {
+                        NestedMenuItem(
+                            text = { Text(text = stringResource(R.string.action_groupBy)) },
+                            children = { closeMenu ->
+                                DropdownMenuItem(
+                                    text = { Text(text = stringResource(R.string.action_group_by_source)) },
+                                    onClick = {
+                                        onClickGroup(GroupByMode.BY_SOURCE)
+                                        closeMenu()
+                                        onDismissRequest()
+                                    },
+                                )
+                            },
+                        )
+                        val isLtr = LocalLayoutDirection.current == LayoutDirection.Ltr
+                        DropdownMenuItem(
+                            text = { Text(text = stringResource(R.string.action_sortBy)) },
+                            onClick = {
+                                onDismissRequest()
+                                sortExpanded = !sortExpanded
+                            },
+                            trailingIcon = {
+                                Icon(
+                                    imageVector = if (isLtr) Icons.Outlined.ArrowRight else Icons.Outlined.ArrowLeft,
+                                    contentDescription = null,
+                                )
+                            },
+                        )
+                    }
+                    val actions = mutableListOf<AppBar.AppBarAction>()
+                    actions += AppBar.Action(
+                        title = stringResource(R.string.action_sort),
+                        icon = Icons.Outlined.Sort,
+                        iconTint = filterTint,
+                        onClick = { mainExpanded = !mainExpanded },
+                    )
+                    actions += AppBar.OverflowAction(
+                        title = stringResource(R.string.action_dismiss_all),
+                        onClick = onDismissAll,
+                    )
+                    if (groupByMode != GroupByMode.NONE) {
+                        actions += if (isAllExpanded) {
+                            AppBar.OverflowAction(
+                                title = stringResource(R.string.action_contract_all),
+                                onClick = {
+                                    onContractAll()
+                                },
+                            )
+                        } else {
+                            AppBar.OverflowAction(
+                                title = stringResource(R.string.action_expand_all),
+                                onClick = {
+                                    onExpandAll()
+                                },
+                            )
+                        }
+                    }
+                    if (groupByMode != GroupByMode.NONE) {
+                        actions += AppBar.OverflowAction(
+                            title = stringResource(R.string.action_ungroup),
+                            onClick = { onClickGroup(GroupByMode.NONE) },
+                        )
+                    }
+                    AppBarActions(actions)
+                }
+            },
+            scrollBehavior = scrollBehavior,
+        )
+    }
+}
+
+@Composable
+private fun FailedUpdatesActionAppBar(
+    modifier: Modifier = Modifier,
+    actionModeCounter: Int,
+    onSelectAll: () -> Unit,
+    onInvertSelection: () -> Unit,
+    onCancelActionMode: () -> Unit,
+    scrollBehavior: TopAppBarScrollBehavior,
+    navigateUp: (() -> Unit)?,
+) {
+    AppBar(
+        modifier = modifier,
+        title = stringResource(R.string.label_failed_updates),
+        actionModeCounter = actionModeCounter,
+        onCancelActionMode = onCancelActionMode,
+        actionModeActions = {
+            AppBarActions(
+                listOf(
+                    AppBar.Action(
+                        title = stringResource(R.string.action_select_all),
+                        icon = Icons.Outlined.SelectAll,
+                        onClick = onSelectAll,
+                    ),
+                    AppBar.Action(
+                        title = stringResource(R.string.action_select_inverse),
+                        icon = Icons.Outlined.FlipToBack,
+                        onClick = onInvertSelection,
+                    ),
+                ),
+            )
+        },
+        scrollBehavior = scrollBehavior,
+        navigateUp = navigateUp,
+    )
+}
+
+@Composable
+fun SortDropdownMenu(
+    expanded: Boolean,
+    onDismissRequest: () -> Unit,
+    onSortClicked: (SortingMode) -> Unit,
+    sortState: SortingMode,
+    descendingOrder: Boolean? = null,
+) {
+    DropdownMenu(
+        expanded = expanded,
+        onDismissRequest = onDismissRequest,
+    ) {
+        SortItem(
+            label = stringResource(R.string.action_sort_A_Z),
+            sortDescending = descendingOrder.takeIf { sortState == SortingMode.BY_ALPHABET },
+            onClick = { onSortClicked(SortingMode.BY_ALPHABET) },
+        )
+    }
+}

app/src/main/java/eu/kanade/presentation/updates/failed/FailedUpdatesScreenModel.kt

@@ -0,0 +1,460 @@
+package eu.kanade.presentation.updates.failed
+
+import android.content.Context
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.Immutable
+import cafe.adriel.voyager.core.model.StateScreenModel
+import cafe.adriel.voyager.core.model.coroutineScope
+import eu.kanade.core.util.addOrRemove
+import eu.kanade.domain.manga.interactor.UpdateManga
+import eu.kanade.domain.source.interactor.GetSourcesWithFavoriteCount
+import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.data.cache.CoverCache
+import eu.kanade.tachiyomi.data.download.DownloadManager
+import eu.kanade.tachiyomi.source.online.HttpSource
+import eu.kanade.tachiyomi.util.removeCovers
+import kotlinx.coroutines.channels.Channel
+import kotlinx.coroutines.flow.catch
+import kotlinx.coroutines.flow.collectLatest
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.receiveAsFlow
+import kotlinx.coroutines.flow.update
+import logcat.LogPriority
+import tachiyomi.core.preference.PreferenceStore
+import tachiyomi.core.preference.getEnum
+import tachiyomi.core.util.lang.launchIO
+import tachiyomi.core.util.lang.launchNonCancellable
+import tachiyomi.core.util.system.logcat
+import tachiyomi.domain.category.interactor.GetCategories
+import tachiyomi.domain.category.model.Category
+import tachiyomi.domain.failed.repository.FailedUpdatesRepository
+import tachiyomi.domain.library.model.LibraryManga
+import tachiyomi.domain.manga.interactor.GetLibraryManga
+import tachiyomi.domain.manga.model.Manga
+import tachiyomi.domain.manga.model.MangaUpdate
+import tachiyomi.domain.source.model.Source
+import tachiyomi.domain.source.service.SourceManager
+import uy.kohesive.injekt.Injekt
+import uy.kohesive.injekt.api.get
+import java.util.TreeMap
+
+class FailedUpdatesScreenModel(
+    private val context: Context,
+    private val getLibraryManga: GetLibraryManga = Injekt.get(),
+    private val sourceManager: SourceManager = Injekt.get(),
+    private val downloadManager: DownloadManager = Injekt.get(),
+    private val updateManga: UpdateManga = Injekt.get(),
+    private val coverCache: CoverCache = Injekt.get(),
+    private val getCategories: GetCategories = Injekt.get(),
+    private val getSourcesWithFavoriteCount: GetSourcesWithFavoriteCount = Injekt.get(),
+    private val preferenceStore: PreferenceStore = Injekt.get(),
+    private val failedUpdatesManager: FailedUpdatesRepository = Injekt.get(),
+) : StateScreenModel<FailedUpdatesScreenState>(FailedUpdatesScreenState()) {
+    private val selectedPositions: Array<Int> = arrayOf(-1, -1)
+    private val selectedMangaIds: HashSet<Long> = HashSet()
+    private val _channel = Channel<Event>(Int.MAX_VALUE)
+    val channel = _channel.receiveAsFlow()
+
+    init {
+        coroutineScope.launchIO {
+            val sortMode = preferenceStore.getEnum("sort_mode", SortingMode.BY_ALPHABET).get()
+            combine(
+                getSourcesWithFavoriteCount.subscribe(),
+                getLibraryManga.subscribe(),
+                failedUpdatesManager.getFailedUpdates(),
+                getCategories.subscribe(),
+            ) { sources, libraryManga, failedUpdates, categories ->
+                Triple(sources, libraryManga, failedUpdates) to categories
+            }
+                .catch {
+                    logcat(LogPriority.ERROR, it)
+                    _channel.send(Event.FailedFetchingSourcesWithCount)
+                }
+                .collectLatest { (triple, categories) ->
+                    val (sources, libraryManga, failedUpdates) = triple
+                    mutableState.update { state ->
+                        val categoriesMap = categories.associateBy { group -> group.id }
+                        state.copy(
+                            sourcesCount = sources,
+                            items = libraryManga.filter { libraryManga ->
+                                failedUpdates.any { it.mangaId == libraryManga.manga.id }
+                            }.map { libraryManga ->
+                                val source = sourceManager.get(libraryManga.manga.source)!!
+                                val failedUpdate = failedUpdates.find { it.mangaId == libraryManga.manga.id }!!
+                                val errorMessage = failedUpdate.errorMessage
+                                val simplifiedErrorMessage = simplifyErrorMessage(errorMessage.substringBefore(":"), failedUpdate.isOnline)
+                                FailedUpdatesManga(
+                                    libraryManga = libraryManga,
+                                    errorMessage = errorMessage,
+                                    simplifiedErrorMessage = simplifiedErrorMessage,
+                                    selected = libraryManga.id in selectedMangaIds,
+                                    source = source,
+                                    category = categoriesMap[libraryManga.category]!!,
+                                )
+                            },
+                            groupByMode = preferenceStore.getEnum("group_by_mode", GroupByMode.NONE).get(),
+                            sortMode = sortMode,
+                            descendingOrder = preferenceStore.getBoolean("descending_order", false).get(),
+                            isLoading = false,
+                        )
+                    }
+                }
+            runSortAction(sortMode)
+        }
+    }
+
+    private fun simplifyErrorMessage(exception: String, isOnline: Long): String {
+        return when (exception) {
+            // General networking exceptions
+            "SocketException" -> context.getString(R.string.exception_socket_error)
+            "BindException" -> context.getString(R.string.exception_bind_port)
+            "InterruptedIOException" -> context.getString(R.string.exception_io_interrupted)
+            "HttpRetryException" -> context.getString(R.string.exception_http_retry)
+            "PortUnreachableException" -> context.getString(R.string.exception_port_unreachable)
+            // General IO-related exceptions
+            "IOException" -> if (isOnline == 1L) context.getString(R.string.exception_io_error) else context.getString(R.string.exception_internet_connection)
+            "TimeoutException" -> context.getString(R.string.exception_timed_out)
+            // SSL & Security-related
+            "SSLException" -> context.getString(R.string.exception_ssl_connection)
+            "CertificateExpiredException" -> context.getString(R.string.exception_ssl_certificate)
+            "CertificateNotYetValidException" -> context.getString(R.string.exception_ssl_not_valid)
+            "CertificateParsingException" -> context.getString(R.string.exception_ssl_parsing)
+            "CertificateEncodingException" -> context.getString(R.string.exception_ssl_encoding)
+            "UnrecoverableKeyException" -> context.getString(R.string.exception_unrecoverable_key)
+            "KeyManagementException" -> context.getString(R.string.exception_key_management)
+            "NoSuchAlgorithmException" -> context.getString(R.string.exception_algorithm)
+            "KeyStoreException" -> context.getString(R.string.exception_keystore)
+            "NoSuchProviderException" -> context.getString(R.string.exception_security_provider)
+            "SignatureException" -> context.getString(R.string.exception_signature_validation)
+            "InvalidKeySpecException" -> context.getString(R.string.exception_key_specification)
+            // Host & DNS-related
+            "UnknownHostException" -> if (isOnline == 1L) context.getString(R.string.exception_domain) else context.getString(R.string.exception_internet_connection)
+            "NoRouteToHostException" -> context.getString(R.string.exception_route_to_host)
+            // URL & URI related
+            "URISyntaxException" -> context.getString(R.string.exception_uri_syntax)
+            "MalformedURLException" -> context.getString(R.string.exception_malformed_url)
+            // Authentication & Proxy
+            "ProtocolException" -> context.getString(R.string.exception_protocol_proxy_type)
+            // Concurrency & Operation-related
+            "CancellationException" -> context.getString(R.string.exception_cancelled)
+            "InterruptedException" -> context.getString(R.string.exception_interrupted)
+            "IllegalStateException" -> context.getString(R.string.exception_unexpected_state)
+            "UnsupportedOperationException" -> context.getString(R.string.exception_not_supported)
+            "IllegalArgumentException" -> context.getString(R.string.exception_invalid_argument)
+            else -> ""
+        }
+    }
+
+    fun runSortAction(mode: SortingMode) {
+        when (mode) {
+            SortingMode.BY_ALPHABET -> sortByAlphabet()
+        }
+    }
+
+    fun runGroupBy(mode: GroupByMode) {
+        when (mode) {
+            GroupByMode.NONE -> unGroup()
+            GroupByMode.BY_SOURCE -> groupBySource()
+        }
+    }
+
+    private fun sortByAlphabet() {
+        mutableState.update { state ->
+            val descendingOrder = if (state.sortMode == SortingMode.BY_ALPHABET) !state.descendingOrder else false
+            preferenceStore.getBoolean("descending_order", false).set(descendingOrder)
+            state.copy(
+                items = if (descendingOrder) state.items.sortedByDescending { it.libraryManga.manga.title } else state.items.sortedBy { it.libraryManga.manga.title },
+                descendingOrder = descendingOrder,
+                sortMode = SortingMode.BY_ALPHABET,
+            )
+        }
+        preferenceStore.getEnum("sort_mode", SortingMode.BY_ALPHABET).set(SortingMode.BY_ALPHABET)
+    }
+
+    @Composable
+    fun categoryMap(items: List<FailedUpdatesManga>, groupMode: GroupByMode, sortMode: SortingMode, descendingOrder: Boolean): Map<String, Map<Pair<String, String>, List<FailedUpdatesManga>>> {
+        val unsortedMap = when (groupMode) {
+            GroupByMode.BY_SOURCE -> items.groupBy { it.source.name }
+                .mapValues { entry -> entry.value.groupBy { Pair(it.errorMessage, it.simplifiedErrorMessage) } }
+            GroupByMode.NONE -> emptyMap()
+        }
+        return when (sortMode) {
+            SortingMode.BY_ALPHABET -> {
+                val sortedMap = TreeMap<String, Map<Pair<String, String>, List<FailedUpdatesManga>>>(if (descendingOrder) { compareByDescending { it } } else { compareBy { it } })
+                sortedMap.putAll(unsortedMap)
+                sortedMap
+            }
+        }
+    }
+
+    fun updateExpandedMap(key: GroupKey, value: Boolean) {
+        mutableState.update { it.copy(expanded = it.expanded + (key to value)) }
+    }
+
+    fun initializeExpandedMap(categoryMap: Map<String, Map<Pair<String, String>, List<FailedUpdatesManga>>>) {
+        mutableState.update { currentState ->
+            val newMap = mutableMapOf<GroupKey, Boolean>()
+            newMap.putAll(
+                categoryMap.keys.flatMap { source ->
+                    listOf(GroupKey(source, Pair("", "")) to false)
+                } + categoryMap.flatMap { entry ->
+                    entry.value.keys.map { errorMessage ->
+                        GroupKey(entry.key, errorMessage) to false
+                    }
+                },
+            )
+            currentState.copy(expanded = newMap)
+        }
+    }
+
+    fun expandAll() {
+        val newExpanded = mutableState.value.expanded.mapValues { true }
+        mutableState.update { it.copy(expanded = newExpanded) }
+    }
+
+    fun contractAll() {
+        val newExpanded = mutableState.value.expanded.mapValues { false }
+        mutableState.update { it.copy(expanded = newExpanded) }
+    }
+
+    private fun groupBySource() {
+        mutableState.update {
+            it.copy(
+                groupByMode = GroupByMode.BY_SOURCE,
+            )
+        }
+        preferenceStore.getEnum("group_by_mode", GroupByMode.NONE).set(GroupByMode.BY_SOURCE)
+    }
+
+    private fun unGroup() {
+        mutableState.update {
+            it.copy(
+                groupByMode = GroupByMode.NONE,
+            )
+        }
+        preferenceStore.getEnum("group_by_mode", GroupByMode.NONE).set(GroupByMode.NONE)
+    }
+
+    fun toggleSelection(
+        item: FailedUpdatesManga,
+        selected: Boolean,
+        userSelected: Boolean = false,
+        fromLongPress: Boolean = false,
+        groupByErrorMessage: Boolean = false,
+    ) {
+        mutableState.update { state ->
+            val newItems = state.items.toMutableList().apply {
+                val selectedIndex = indexOfFirst { it.libraryManga.manga.id == item.libraryManga.manga.id }
+                if (selectedIndex < 0) return@apply
+
+                val selectedItem = get(selectedIndex)
+                if (selectedItem.selected == selected) return@apply
+
+                val firstSelection = none { it.selected }
+                set(selectedIndex, selectedItem.copy(selected = selected))
+                selectedMangaIds.addOrRemove(item.libraryManga.manga.id, selected)
+
+                if (selected && userSelected && fromLongPress) {
+                    if (firstSelection) {
+                        selectedPositions[0] = selectedIndex
+                        selectedPositions[1] = selectedIndex
+                    } else {
+                        val range: IntRange
+                        if (selectedIndex < selectedPositions[0]) {
+                            range = selectedIndex + 1 until selectedPositions[0]
+                            selectedPositions[0] = selectedIndex
+                        } else if (selectedIndex > selectedPositions[1]) {
+                            range = (selectedPositions[1] + 1) until selectedIndex
+                            selectedPositions[1] = selectedIndex
+                        } else {
+                            range = IntRange.EMPTY
+                        }
+
+                        if (groupByErrorMessage) {
+                            val firstErrorMessage = getOrNull(selectedPositions[0])?.errorMessage
+                            val lastErrorMessage = getOrNull(selectedPositions[1])?.errorMessage
+
+                            range.forEach {
+                                val inBetweenItem = getOrNull(it)
+                                if (inBetweenItem != null && !inBetweenItem.selected && inBetweenItem.errorMessage == firstErrorMessage && inBetweenItem.errorMessage == lastErrorMessage) {
+                                    selectedMangaIds.add(inBetweenItem.libraryManga.manga.id)
+                                    set(it, inBetweenItem.copy(selected = true))
+                                }
+                            }
+                        } else {
+                            range.forEach {
+                                val inBetweenItem = get(it)
+                                if (!inBetweenItem.selected) {
+                                    selectedMangaIds.add(inBetweenItem.libraryManga.manga.id)
+                                    set(it, inBetweenItem.copy(selected = true))
+                                }
+                            }
+                        }
+                    }
+                } else if (userSelected && !fromLongPress) {
+                    if (!selected) {
+                        if (selectedIndex == selectedPositions[0]) {
+                            selectedPositions[0] = indexOfFirst { it.selected }
+                        } else if (selectedIndex == selectedPositions[1]) {
+                            selectedPositions[1] = indexOfLast { it.selected }
+                        }
+                    } else {
+                        if (selectedIndex < selectedPositions[0]) {
+                            selectedPositions[0] = selectedIndex
+                        } else if (selectedIndex > selectedPositions[1]) {
+                            selectedPositions[1] = selectedIndex
+                        }
+                    }
+                }
+            }
+            state.copy(items = newItems)
+        }
+    }
+
+    fun toggleAllSelection(selected: Boolean) {
+        mutableState.update { state ->
+            val newItems = state.items.map {
+                selectedMangaIds.addOrRemove(it.libraryManga.manga.id, selected)
+                it.copy(selected = selected)
+            }
+            state.copy(items = newItems)
+        }
+
+        selectedPositions[0] = -1
+        selectedPositions[1] = -1
+    }
+
+    fun removeMangas(mangaList: List<Manga>, deleteFromLibrary: Boolean, deleteChapters: Boolean) {
+        coroutineScope.launchNonCancellable {
+            val mangaToDelete = mangaList.distinctBy { it.id }
+
+            if (deleteFromLibrary) {
+                val toDelete = mangaToDelete.map {
+                    it.removeCovers(coverCache)
+                    MangaUpdate(
+                        favorite = false,
+                        id = it.id,
+                    )
+                }
+                updateManga.awaitAll(toDelete)
+            }
+
+            if (deleteChapters) {
+                mangaToDelete.forEach { manga ->
+                    val source = sourceManager.get(manga.source) as? HttpSource
+                    if (source != null) {
+                        downloadManager.deleteManga(manga, source)
+                    }
+                }
+            }
+        }
+        if (deleteFromLibrary) {
+            val set = mangaList.map { it.id }.toHashSet()
+            mutableState.update { state ->
+                state.copy(
+                    items = state.items.filterNot { it.libraryManga.manga.id in set },
+                )
+            }
+        }
+    }
+
+    fun dismissManga(selected: List<FailedUpdatesManga>) {
+        val set = selected.map { it.libraryManga.manga.id }.toHashSet()
+        val listOfMangaIds = selected.map { it.libraryManga.manga.id }
+        toggleAllSelection(false)
+        mutableState.update { state ->
+            state.copy(
+                items = state.items.filterNot { it.libraryManga.manga.id in set },
+            )
+        }
+
+        coroutineScope.launchNonCancellable { failedUpdatesManager.removeFailedUpdatesByMangaIds(listOfMangaIds) }
+    }
+
+    fun openDeleteMangaDialog(selected: List<FailedUpdatesManga>) {
+        val mangaList = selected.map { it.libraryManga.manga }
+        mutableState.update { it.copy(dialog = Dialog.DeleteManga(mangaList)) }
+    }
+
+    fun openErrorMessageDialog(errorMessage: String) {
+        mutableState.update { it.copy(dialog = Dialog.ShowErrorMessage(errorMessage)) }
+    }
+
+    fun closeDialog() {
+        mutableState.update { it.copy(dialog = null) }
+    }
+
+    fun invertSelection() {
+        mutableState.update { state ->
+            val newItems = state.items.map {
+                selectedMangaIds.addOrRemove(it.libraryManga.manga.id, !it.selected)
+                it.copy(selected = !it.selected)
+            }
+            state.copy(items = newItems)
+        }
+        selectedPositions[0] = -1
+        selectedPositions[1] = -1
+    }
+
+    fun groupSelection(items: List<FailedUpdatesManga>) {
+        val newSelected = items.map { manga -> manga.libraryManga.id }.toHashSet()
+        selectedMangaIds.addAll(newSelected)
+        mutableState.update { state ->
+            val newItems = state.items.map {
+                it.copy(selected = if (it.libraryManga.id in newSelected) !it.selected else it.selected)
+            }
+            state.copy(items = newItems)
+        }
+        selectedPositions[0] = -1
+        selectedPositions[1] = -1
+    }
+}
+
+enum class GroupByMode {
+    NONE,
+    BY_SOURCE,
+}
+
+enum class SortingMode {
+    BY_ALPHABET,
+}
+
+sealed class Dialog {
+    data class DeleteManga(val manga: List<Manga>) : Dialog()
+
+    data class ShowErrorMessage(val errorMessage: String) : Dialog()
+}
+
+sealed class Event {
+    data object FailedFetchingSourcesWithCount : Event()
+}
+
+@Immutable
+data class FailedUpdatesManga(
+    val libraryManga: LibraryManga,
+    val errorMessage: String,
+    val simplifiedErrorMessage: String,
+    val selected: Boolean = false,
+    val source: eu.kanade.tachiyomi.source.Source,
+    val category: Category,
+)
+
+@Immutable
+data class FailedUpdatesScreenState(
+    val isLoading: Boolean = true,
+    val items: List<FailedUpdatesManga> = emptyList(),
+    val groupByMode: GroupByMode = GroupByMode.NONE,
+    val sortMode: SortingMode = SortingMode.BY_ALPHABET,
+    val descendingOrder: Boolean = false,
+    val dialog: Dialog? = null,
+    val sourcesCount: List<Pair<Source, Long>> = emptyList(),
+    val expanded: Map<GroupKey, Boolean> = emptyMap(),
+) {
+    val selected = items.filter { it.selected }
+    val selectionMode = selected.isNotEmpty()
+}
+
+data class GroupKey(
+    val categoryOrSource: String,
+    val errorMessagePair: Pair<String, String>,
+)

app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateJob.kt

@@ -24,9 +24,8 @@ import eu.kanade.tachiyomi.data.download.DownloadManager
 import eu.kanade.tachiyomi.data.notification.Notifications
 import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.model.UpdateStrategy
-import eu.kanade.tachiyomi.util.storage.getUriCompat
-import eu.kanade.tachiyomi.util.system.createFileInCacheDir
 import eu.kanade.tachiyomi.util.system.isConnectedToWifi
+import eu.kanade.tachiyomi.util.system.isOnline
 import eu.kanade.tachiyomi.util.system.isRunning
 import eu.kanade.tachiyomi.util.system.setForegroundSafely
 import eu.kanade.tachiyomi.util.system.workManager
@@ -46,6 +45,7 @@ import tachiyomi.core.common.util.system.logcat
 import tachiyomi.domain.category.model.Category
 import tachiyomi.domain.chapter.model.Chapter
 import tachiyomi.domain.chapter.model.NoChaptersException
+import tachiyomi.domain.failed.repository.FailedUpdatesRepository
 import tachiyomi.domain.library.model.LibraryManga
 import tachiyomi.domain.library.service.LibraryPreferences
 import tachiyomi.domain.library.service.LibraryPreferences.Companion.DEVICE_CHARGING
@@ -64,7 +64,6 @@ import tachiyomi.domain.source.service.SourceManager
 import tachiyomi.i18n.MR
 import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get
-import java.io.File
 import java.time.Instant
 import java.time.ZonedDateTime
 import java.util.concurrent.CopyOnWriteArrayList
@@ -84,6 +83,7 @@ class LibraryUpdateJob(private val context: Context, workerParams: WorkerParamet
     private val updateManga: UpdateManga = Injekt.get()
     private val syncChaptersWithSource: SyncChaptersWithSource = Injekt.get()
     private val fetchInterval: FetchInterval = Injekt.get()
+    private val failedUpdatesManager: FailedUpdatesRepository = Injekt.get()
     private val filterChaptersForDownload: FilterChaptersForDownload = Injekt.get()
 
     private val notifier = LibraryUpdateNotifier(context)
@@ -239,11 +239,12 @@ class LibraryUpdateJob(private val context: Context, workerParams: WorkerParamet
         val progressCount = AtomicInteger(0)
         val currentlyUpdatingManga = CopyOnWriteArrayList<Manga>()
         val newUpdates = CopyOnWriteArrayList<Pair<Manga, Array<Chapter>>>()
-        val failedUpdates = CopyOnWriteArrayList<Pair<Manga, String?>>()
         val hasDownloads = AtomicBoolean(false)
+        val failedUpdatesCount = AtomicInteger(0)
         val fetchWindow = fetchInterval.getWindow(ZonedDateTime.now())
 
         coroutineScope {
+            failedUpdatesManager.removeAllFailedUpdates()
             mangaToUpdate.groupBy { it.manga.source }.values
                 .map { mangaInSource ->
                     async {
@@ -284,13 +285,20 @@ class LibraryUpdateJob(private val context: Context, workerParams: WorkerParamet
                                             is NoChaptersException -> context.stringResource(
                                                 MR.strings.no_chapters_error,
                                             )
-                                            // failedUpdates will already have the source, don't need to copy it into the message
+
                                             is SourceNotInstalledException -> context.stringResource(
                                                 MR.strings.loader_not_implemented_error,
                                             )
-                                            else -> e.message
+                                            else -> e.message ?: context.getString(MR.strings.exception_unknown)
+                                        }
+                                        try {
+                                            failedUpdatesCount.getAndIncrement()
+                                            val fullErrorMessage = "${e::class.java.simpleName}: $errorMessage"
+                                            val isOnline = if (context.isOnline()) 1L else 0L
+                                            failedUpdatesManager.insert(manga.id, fullErrorMessage, isOnline)
+                                        } catch (e: Exception) {
+                                            logcat(LogPriority.ERROR, e)
                                         }
-                                        failedUpdates.add(manga to errorMessage)
                                     }
                                 }
                             }
@@ -309,13 +317,12 @@ class LibraryUpdateJob(private val context: Context, workerParams: WorkerParamet
             }
         }
 
-        if (failedUpdates.isNotEmpty()) {
+        if (failedUpdatesCount.get() > 0) {
-            val errorFile = writeErrorFile(failedUpdates)
             notifier.showUpdateErrorNotification(
-                failedUpdates.size,
+                failedUpdatesCount.get(),
-                errorFile.getUriCompat(context),
             )
         }
+
     }
 
     private fun downloadChapters(manga: Manga, chapters: List<Chapter>) {
@@ -376,43 +383,11 @@ class LibraryUpdateJob(private val context: Context, workerParams: WorkerParamet
         )
     }
 
-    /**
-     * Writes basic file of update errors to cache dir.
-     */
-    private fun writeErrorFile(errors: List<Pair<Manga, String?>>): File {
-        try {
-            if (errors.isNotEmpty()) {
-                val file = context.createFileInCacheDir("mihon_update_errors.txt")
-                file.bufferedWriter().use { out ->
-                    out.write(context.stringResource(MR.strings.library_errors_help, ERROR_LOG_HELP_URL) + "\n\n")
-                    // Error file format:
-                    // ! Error
-                    //   # Source
-                    //     - Manga
-                    errors.groupBy({ it.second }, { it.first }).forEach { (error, mangas) ->
-                        out.write("\n! ${error}\n")
-                        mangas.groupBy { it.source }.forEach { (srcId, mangas) ->
-                            val source = sourceManager.getOrStub(srcId)
-                            out.write("  # $source\n")
-                            mangas.forEach {
-                                out.write("    - ${it.title}\n")
-                            }
-                        }
-                    }
-                }
-                return file
-            }
-        } catch (_: Exception) {}
-        return File("")
-    }
-
     companion object {
         private const val TAG = "LibraryUpdate"
         private const val WORK_NAME_AUTO = "LibraryUpdate-auto"
         private const val WORK_NAME_MANUAL = "LibraryUpdate-manual"
 
-        private const val ERROR_LOG_HELP_URL = "https://mihon.app/docs/guides/troubleshooting/"
-
         private const val MANGA_PER_SOURCE_QUEUE_WARNING_THRESHOLD = 60
 
         /**

app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateNotifier.kt

@@ -6,7 +6,6 @@ import android.content.Context
 import android.content.Intent
 import android.graphics.Bitmap
 import android.graphics.BitmapFactory
-import android.net.Uri
 import androidx.core.app.NotificationCompat
 import androidx.core.app.NotificationManagerCompat
 import coil3.asDrawable
@@ -139,12 +138,11 @@ class LibraryUpdateNotifier(
     }
 
     /**
-     * Shows notification containing update entries that failed with action to open full log.
+     * Shows notification containing update entries that failed with action to open failed updates screen.
      *
      * @param failed Number of entries that failed to update.
-     * @param uri Uri for error log file containing all titles that failed.
      */
-    fun showUpdateErrorNotification(failed: Int, uri: Uri) {
+    fun showUpdateErrorNotification(failed: Int) {
         if (failed == 0) {
             return
         }
@@ -157,7 +155,7 @@ class LibraryUpdateNotifier(
             setContentText(context.stringResource(MR.strings.action_show_errors))
             setSmallIcon(R.drawable.ic_mihon)
 
-            setContentIntent(NotificationReceiver.openErrorLogPendingActivity(context, uri))
+            setContentIntent(NotificationHandler.openFailedUpdatesPendingActivity(context))
         }
     }
 

app/src/main/java/eu/kanade/tachiyomi/data/notification/NotificationHandler.kt

@@ -31,11 +31,23 @@ object NotificationHandler {
         )
     }
 
+    /**
+     * Returns [PendingIntent] that opens failed updates screen.
+     *
+     * @param context context of application
+     */
+    internal fun openFailedUpdatesPendingActivity(context: Context): PendingIntent {
+        val intent = Intent(context, MainActivity::class.java).apply {
+            flags = Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_ACTIVITY_SINGLE_TOP
+            action = Constants.SHORTCUT_FAILED
+        }
+        return PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE)
+    }
+
     /**
      * Returns [PendingIntent] that starts a gallery activity
      *
      * @param context context of application
-     * @param file file containing image
      */
     internal fun openImagePendingActivity(context: Context, uri: Uri): PendingIntent {
         val intent = Intent(Intent.ACTION_VIEW).apply {

app/src/main/java/eu/kanade/tachiyomi/ui/home/HomeScreen.kt

@@ -35,6 +35,7 @@ import cafe.adriel.voyager.navigator.currentOrThrow
 import cafe.adriel.voyager.navigator.tab.LocalTabNavigator
 import cafe.adriel.voyager.navigator.tab.TabNavigator
 import eu.kanade.domain.source.service.SourcePreferences
+import eu.kanade.presentation.updates.failed.FailedUpdatesScreen
 import eu.kanade.presentation.util.Screen
 import eu.kanade.presentation.util.isTabletUi
 import eu.kanade.tachiyomi.ui.browse.BrowseTab
@@ -157,7 +158,7 @@ object HomeScreen : Screen() {
                     openTabEvent.receiveAsFlow().collectLatest {
                         tabNavigator.current = when (it) {
                             is Tab.Library -> LibraryTab
-                            Tab.Updates -> UpdatesTab
+                            is Tab.Updates -> UpdatesTab
                             Tab.History -> HistoryTab
                             is Tab.Browse -> {
                                 if (it.toExtensions) {
@@ -174,6 +175,9 @@ object HomeScreen : Screen() {
                         if (it is Tab.More && it.toDownloads) {
                             navigator.push(DownloadQueueScreen)
                         }
+                        if (it is Tab.Updates && it.toFailedUpdates) {
+                            navigator.push(FailedUpdatesScreen())
+                        }
                     }
                 }
             }
@@ -309,7 +313,7 @@ object HomeScreen : Screen() {
 
     sealed interface Tab {
         data class Library(val mangaIdToOpen: Long? = null) : Tab
-        data object Updates : Tab
+        data class Updates(val toFailedUpdates: Boolean) : Tab
         data object History : Tab
         data class Browse(val toExtensions: Boolean = false) : Tab
         data class More(val toDownloads: Boolean) : Tab

app/src/main/java/eu/kanade/tachiyomi/ui/main/MainActivity.kt

@@ -395,7 +395,11 @@ class MainActivity : BaseActivity() {
                 navigator.popUntilRoot()
                 HomeScreen.Tab.Library(idToOpen)
             }
-            Constants.SHORTCUT_UPDATES -> HomeScreen.Tab.Updates
+            Constants.SHORTCUT_UPDATES -> HomeScreen.Tab.Updates(false)
+            Constants.SHORTCUT_FAILED -> {
+                navigator.popUntilRoot()
+                HomeScreen.Tab.Updates(true)
+            }
             Constants.SHORTCUT_HISTORY -> HomeScreen.Tab.History
             Constants.SHORTCUT_SOURCES -> HomeScreen.Tab.Browse(false)
             Constants.SHORTCUT_EXTENSIONS -> HomeScreen.Tab.Browse(true)

app/src/main/java/eu/kanade/tachiyomi/ui/updates/UpdatesScreenModel.kt

@@ -38,6 +38,7 @@ import tachiyomi.core.common.util.system.logcat
 import tachiyomi.domain.chapter.interactor.GetChapter
 import tachiyomi.domain.chapter.interactor.UpdateChapter
 import tachiyomi.domain.chapter.model.ChapterUpdate
+import tachiyomi.domain.failed.repository.FailedUpdatesRepository
 import tachiyomi.domain.library.service.LibraryPreferences
 import tachiyomi.domain.manga.interactor.GetManga
 import tachiyomi.domain.source.service.SourceManager
@@ -58,6 +59,7 @@ class UpdatesScreenModel(
     private val getChapter: GetChapter = Injekt.get(),
     private val libraryPreferences: LibraryPreferences = Injekt.get(),
     val snackbarHostState: SnackbarHostState = SnackbarHostState(),
+    private val failedUpdatesManager: FailedUpdatesRepository = Injekt.get(),
 ) : StateScreenModel<UpdatesScreenModel.State>(State()) {
 
     private val _events: Channel<Event> = Channel(Int.MAX_VALUE)
@@ -78,16 +80,18 @@ class UpdatesScreenModel(
                 getUpdates.subscribe(limit).distinctUntilChanged(),
                 downloadCache.changes,
                 downloadManager.queueState,
-            ) { updates, _, _ -> updates }
+                failedUpdatesManager.hasFailedUpdates(),
+            ) { updates, _, _, iconState -> updates to iconState }
                 .catch {
                     logcat(LogPriority.ERROR, it)
                     _events.send(Event.InternalError)
                 }
-                .collectLatest { updates ->
+                .collectLatest { (updates, iconState) ->
-                    mutableState.update {
+                    mutableState.update { state ->
-                        it.copy(
+                        state.copy(
                             isLoading = false,
                             items = updates.toUpdateItems(),
+                            hasFailedUpdates = iconState,
                         )
                     }
                 }
@@ -365,6 +369,7 @@ class UpdatesScreenModel(
         val isLoading: Boolean = true,
         val items: PersistentList<UpdatesItem> = persistentListOf(),
         val dialog: Dialog? = null,
+        val hasFailedUpdates: Boolean = false,
     ) {
         val selected = items.filter { it.selected }
         val selectionMode = selected.isNotEmpty()

app/src/main/java/eu/kanade/tachiyomi/ui/updates/UpdatesTab.kt

@@ -17,6 +17,7 @@ import cafe.adriel.voyager.navigator.tab.LocalTabNavigator
 import cafe.adriel.voyager.navigator.tab.TabOptions
 import eu.kanade.presentation.updates.UpdateScreen
 import eu.kanade.presentation.updates.UpdatesDeleteConfirmationDialog
+import eu.kanade.presentation.updates.failed.FailedUpdatesScreen
 import eu.kanade.presentation.util.Tab
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.ui.download.DownloadQueueScreen
@@ -64,6 +65,7 @@ data object UpdatesTab : Tab {
             onSelectAll = screenModel::toggleAllSelection,
             onInvertSelection = screenModel::invertSelection,
             onUpdateLibrary = screenModel::updateLibrary,
+            onUpdateWarning = { navigator.push(FailedUpdatesScreen()) },
             onDownloadChapter = screenModel::downloadChapters,
             onMultiBookmarkClicked = screenModel::bookmarkUpdates,
             onMultiMarkAsReadClicked = screenModel::markUpdatesRead,
@@ -74,6 +76,7 @@ data object UpdatesTab : Tab {
                 context.startActivity(intent)
             },
             onCalendarClicked = { navigator.push(UpcomingScreen()) },
+            hasFailedUpdates = state.hasFailedUpdates,
         )
 
         val onDismissDialog = { screenModel.setDialog(null) }

core/common/src/main/kotlin/tachiyomi/core/common/Constants.kt

@@ -12,6 +12,7 @@ object Constants {
     const val SHORTCUT_LIBRARY = "eu.kanade.tachiyomi.SHOW_LIBRARY"
     const val SHORTCUT_MANGA = "eu.kanade.tachiyomi.SHOW_MANGA"
     const val SHORTCUT_UPDATES = "eu.kanade.tachiyomi.SHOW_RECENTLY_UPDATED"
+    const val SHORTCUT_FAILED = "eu.kanade.tachiyomi.SHOW_FAILED_UPDATES"
     const val SHORTCUT_HISTORY = "eu.kanade.tachiyomi.SHOW_RECENTLY_READ"
     const val SHORTCUT_SOURCES = "eu.kanade.tachiyomi.SHOW_CATALOGUES"
     const val SHORTCUT_EXTENSIONS = "eu.kanade.tachiyomi.EXTENSIONS"

data/src/main/java/tachiyomi/data/failed/FailedUpdatesMapper.kt

@@ -0,0 +1,11 @@
+package tachiyomi.data.failed
+
+import tachiyomi.domain.failed.model.FailedUpdate
+
+val failedUpdatesMapper: (Long, String, Long) -> FailedUpdate = { mangaId, errorMessage, isOnline ->
+    FailedUpdate(
+        mangaId = mangaId,
+        errorMessage = errorMessage,
+        isOnline = isOnline,
+    )
+}

data/src/main/java/tachiyomi/data/failed/FailedUpdatesRepositoryImpl.kt

@@ -0,0 +1,51 @@
+package tachiyomi.data.failed
+
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.distinctUntilChanged
+import kotlinx.coroutines.flow.map
+import logcat.LogPriority
+import tachiyomi.core.util.system.logcat
+import tachiyomi.data.DatabaseHandler
+import tachiyomi.domain.failed.model.FailedUpdate
+import tachiyomi.domain.failed.repository.FailedUpdatesRepository
+
+class FailedUpdatesRepositoryImpl(
+    private val handler: DatabaseHandler,
+) : FailedUpdatesRepository {
+    override fun getFailedUpdates(): Flow<List<FailedUpdate>> {
+        return handler.subscribeToList { failed_updatesQueries.getFailedUpdates(failedUpdatesMapper) }
+    }
+
+    override fun hasFailedUpdates(): Flow<Boolean> {
+        return handler
+            .subscribeToOne { failed_updatesQueries.getFailedUpdatesCount() }
+            .map { it > 0 }
+            .distinctUntilChanged()
+    }
+
+    override suspend fun removeFailedUpdatesByMangaIds(mangaIds: List<Long>) {
+        try {
+            handler.await { failed_updatesQueries.removeFailedUpdatesByMangaIds(mangaIds) }
+        } catch (e: Exception) {
+            logcat(LogPriority.ERROR, e)
+        }
+    }
+
+    override suspend fun removeAllFailedUpdates() {
+        try {
+            handler.await { failed_updatesQueries.removeAllFailedUpdates() }
+        } catch (e: Exception) {
+            logcat(LogPriority.ERROR, e)
+        }
+    }
+
+    override suspend fun insert(mangaId: Long, errorMessage: String, isOnline: Long) {
+        handler.await(inTransaction = true) {
+            failed_updatesQueries.insert(
+                mangaId = mangaId,
+                errorMessage = errorMessage,
+                isOnline = isOnline,
+            )
+        }
+    }
+}

data/src/main/sqldelight/tachiyomi/data/failed_updates.sq

@@ -0,0 +1,26 @@
+CREATE TABLE failed_updates (
+    manga_id INTEGER NOT NULL,
+    error_message TEXT NOT NULL,
+    is_online INTEGER NOT NULL CHECK(is_online IN (0, 1)),
+    UNIQUE (manga_id) ON CONFLICT REPLACE,
+    FOREIGN KEY(manga_id) REFERENCES mangas (_id)
+    ON DELETE CASCADE
+);
+
+insert:
+INSERT INTO failed_updates(manga_id,error_message,is_online)
+VALUES (:mangaId,:errorMessage,:isOnline);
+
+getFailedUpdates:
+SELECT *
+FROM failed_updates;
+
+removeFailedUpdatesByMangaIds:
+DELETE FROM failed_updates
+WHERE manga_id IN :mangaIds;
+
+removeAllFailedUpdates:
+DELETE FROM failed_updates;
+
+getFailedUpdatesCount:
+SELECT COUNT(*) AS row_count FROM failed_updates;

data/src/main/sqldelight/tachiyomi/migrations/4.sqm

@@ -0,0 +1,8 @@
+CREATE TABLE IF NOT EXISTS failed_updates (
+    manga_id INTEGER NOT NULL,
+    error_message TEXT NOT NULL,
+    is_online INTEGER NOT NULL CHECK(is_online IN (0, 1)),
+    UNIQUE (manga_id) ON CONFLICT REPLACE,
+    FOREIGN KEY(manga_id) REFERENCES mangas (_id)
+    ON DELETE CASCADE
+);

domain/src/main/java/tachiyomi/domain/failed/model/FailedUpdate.kt

@@ -0,0 +1,7 @@
+package tachiyomi.domain.failed.model
+
+data class FailedUpdate(
+    val mangaId: Long,
+    val errorMessage: String,
+    val isOnline: Long,
+)

domain/src/main/java/tachiyomi/domain/failed/repository/FailedUpdatesRepository.kt

@@ -0,0 +1,16 @@
+package tachiyomi.domain.failed.repository
+
+import kotlinx.coroutines.flow.Flow
+import tachiyomi.domain.failed.model.FailedUpdate
+
+interface FailedUpdatesRepository {
+    fun getFailedUpdates(): Flow<List<FailedUpdate>>
+
+    fun hasFailedUpdates(): Flow<Boolean>
+
+    suspend fun removeFailedUpdatesByMangaIds(mangaIds: List<Long>)
+
+    suspend fun removeAllFailedUpdates()
+
+    suspend fun insert(mangaId: Long, errorMessage: String, isOnline: Long)
+}

i18n/src/commonMain/moko-resources/base/strings.xml

@@ -26,6 +26,8 @@
     <string name="label_download_queue">Download queue</string>
     <string name="label_library">Library</string>
     <string name="label_recent_updates">Updates</string>
+    <string name="label_failed_updates">Failed updates</string>
+    <string name="label_error_message">Error message</string>
     <string name="label_upcoming">Upcoming</string>
     <string name="label_recent_manga">History</string>
     <string name="label_sources">Sources</string>
@@ -59,6 +61,7 @@
     <!-- reserved for #4048 -->
     <string name="action_filter_empty">Remove filter</string>
     <string name="action_sort_alpha">Alphabetically</string>
+    <string name="action_sort_A_Z">A-Z</string>
     <string name="action_sort_count">Total entries</string>
     <string name="action_sort_total">Total chapters</string>
     <string name="action_sort_last_read">Last read</string>
@@ -83,7 +86,10 @@
     <string name="action_bookmark">Bookmark chapter</string>
     <string name="action_remove_bookmark">Unbookmark chapter</string>
     <string name="action_delete">Delete</string>
+    <string name="action_dismiss">Dismiss</string>
+    <string name="action_info">Info</string>
     <string name="action_update_library">Update library</string>
+    <string name="action_update_warning">Update warning</string>
     <string name="action_enable_all">Enable all</string>
     <string name="action_disable_all">Disable all</string>
     <string name="action_edit">Edit</string>
@@ -112,6 +118,12 @@
     <string name="action_show_manga">Show entry</string>
     <string name="action_copy_to_clipboard">Copy to clipboard</string>
     <string name="action_copy_link">Copy link</string>
+    <string name="action_group_by_category">Category</string>
+    <string name="action_group_by_source">Source</string>
+    <string name="action_ungroup">Ungroup</string>
+    <string name="action_dismiss_all">Dismiss all</string>
+    <string name="action_expand_all">Expand all</string>
+    <string name="action_contract_all">Contract all</string>
     <!-- Do not translate "WebView" -->
     <string name="action_open_in_web_view">Open in WebView</string>
     <string name="action_web_view" translatable="false">WebView</string>
@@ -136,6 +148,8 @@
     <string name="action_ok">OK</string>
     <string name="action_cancel_all">Cancel all</string>
     <string name="cancel_all_for_series">Cancel all for this series</string>
+    <string name="action_sortBy">Sort by</string>
+    <string name="action_groupBy">Group by</string>
     <string name="action_sort">Sort</string>
     <string name="action_order_by_upload_date">By upload date</string>
     <string name="action_order_by_chapter_number">By chapter number</string>
@@ -917,6 +931,7 @@
 
     <!-- Information Text -->
     <string name="information_no_downloads">No downloads</string>
+    <string name="information_no_update_errors">All entries updated successfully</string>
     <string name="information_no_recent">No recent updates</string>
     <string name="information_no_recent_manga">Nothing read recently</string>
     <string name="information_empty_library">Your library is empty</string>

presentation-core/src/main/java/tachiyomi/presentation/core/components/Pill.kt

@@ -10,6 +10,8 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.TextUnit
 import androidx.compose.ui.unit.dp
 
@@ -20,6 +22,10 @@ fun Pill(
     color: Color = MaterialTheme.colorScheme.surfaceContainerHigh,
     contentColor: Color = MaterialTheme.colorScheme.onSurface,
     fontSize: TextUnit = LocalTextStyle.current.fontSize,
+    fontWeight: FontWeight = FontWeight.Medium,
+    style: TextStyle = MaterialTheme.typography.bodySmall,
+    textColor: Color = MaterialTheme.colorScheme.onError,
+    isCustomText: Boolean = false,
 ) {
     Surface(
         modifier = modifier
@@ -33,11 +39,22 @@ fun Pill(
                 .padding(6.dp, 1.dp),
             contentAlignment = Alignment.Center,
         ) {
-            Text(
+            if (isCustomText) {
-                text = text,
+                Text(
-                fontSize = fontSize,
+                    text = text,
-                maxLines = 1,
+                    fontSize = fontSize,
-            )
+                    style = style,
+                    fontWeight = fontWeight,
+                    color = textColor,
+                    maxLines = 1,
+                )
+            } else {
+                Text(
+                    text = text,
+                    fontSize = fontSize,
+                    maxLines = 1,
+                )
+            }
         }
     }
 }

presentation-core/src/main/java/tachiyomi/presentation/core/screens/EmptyScreen.kt

@@ -40,11 +40,13 @@ fun EmptyScreen(
     stringRes: StringResource,
     modifier: Modifier = Modifier,
     actions: ImmutableList<EmptyScreenAction>? = null,
+    happyFace: Boolean = false,
 ) {
     EmptyScreen(
         message = stringResource(stringRes),
         modifier = modifier,
         actions = actions,
+        happyFace = happyFace,
     )
 }
 
@@ -53,8 +55,9 @@ fun EmptyScreen(
     message: String,
     modifier: Modifier = Modifier,
     actions: ImmutableList<EmptyScreenAction>? = null,
+    happyFace: Boolean = false,
 ) {
-    val face = remember { getRandomErrorFace() }
+    val face = remember { getRandomFace(happyFace) }
     Column(
         modifier = modifier
             .fillMaxSize()
@@ -108,6 +111,16 @@ private val ErrorFaces = listOf(
     "(･Д･。",
 )
 
-private fun getRandomErrorFace(): String {
+private val HappyFaces = listOf(
-    return ErrorFaces[Random.nextInt(ErrorFaces.size)]
+    "ヽ(＾Д＾)ﾉ",
+    "≧◡≦",
+    "＾ω＾",
+    "＾▽＾",
+    "(◕‿◕)",
+    "◠‿◠",
+)
+private fun getRandomFace(happyFace: Boolean): String {
+    val faces = if (happyFace) HappyFaces else ErrorFaces
+
+    return faces[Random.nextInt(faces.size)]
 }