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plezy/lib/screens/libraries/tabs/library_browse_tab.dart
T
2025-12-12 15:57:22 +01:00

653 lines
19 KiB
Dart

import 'package:flutter/material.dart';
import 'package:material_symbols_icons/symbols.dart';
import 'package:provider/provider.dart';
import 'package:dio/dio.dart';
import '../../../../services/plex_client.dart';
import '../../../models/plex_metadata.dart';
import '../../../models/plex_filter.dart';
import '../../../models/plex_sort.dart';
import '../../../providers/settings_provider.dart';
import '../../../utils/error_message_utils.dart';
import '../../../utils/grid_size_calculator.dart';
import '../../../widgets/focusable_media_card.dart';
import '../../../widgets/focusable_filter_chip.dart';
import '../../../widgets/media_grid_delegate.dart';
import '../../../mixins/library_tab_focus_mixin.dart';
import '../folder_tree_view.dart';
import '../filters_bottom_sheet.dart';
import '../sort_bottom_sheet.dart';
import '../empty_state_widget.dart';
import '../error_state_widget.dart';
import '../../../services/storage_service.dart';
import '../../../services/settings_service.dart' show ViewMode;
import '../../../mixins/item_updatable.dart';
import '../../../mixins/library_tab_state.dart';
import '../../../i18n/strings.g.dart';
import 'base_library_tab.dart';
/// Browse tab for library screen
/// Shows library items with grouping, filtering, and sorting
class LibraryBrowseTab extends BaseLibraryTab<PlexMetadata> {
const LibraryBrowseTab({
super.key,
required super.library,
super.viewMode,
super.density,
super.onDataLoaded,
super.isActive,
super.suppressAutoFocus,
super.onBack,
});
@override
State<LibraryBrowseTab> createState() => _LibraryBrowseTabState();
}
class _LibraryBrowseTabState
extends BaseLibraryTabState<PlexMetadata, LibraryBrowseTab>
with ItemUpdatable, LibraryTabStateMixin, LibraryTabFocusMixin {
@override
PlexClient get client => getClientForLibrary();
@override
String get focusNodeDebugLabel => 'browse_first_item';
@override
int get itemCount => items.length;
@override
void updateItemInLists(String ratingKey, PlexMetadata updatedMetadata) {
setState(() {
final index = items.indexWhere((item) => item.ratingKey == ratingKey);
if (index != -1) {
items[index] = updatedMetadata;
}
});
}
// Browse-specific state (not in base class)
List<PlexFilter> _filters = [];
List<PlexSort> _sortOptions = [];
Map<String, String> _selectedFilters = {};
PlexSort? _selectedSort;
bool _isSortDescending = false;
String _selectedGrouping = 'all'; // all, seasons, episodes, folders
// Pagination state
int _currentPage = 0;
bool _hasMoreItems = true;
CancelToken? _cancelToken;
int _requestId = 0;
static const int _pageSize = 500;
// Focus nodes for filter chips
final FocusNode _groupingChipFocusNode = FocusNode(
debugLabel: 'grouping_chip',
);
final FocusNode _filtersChipFocusNode = FocusNode(debugLabel: 'filters_chip');
final FocusNode _sortChipFocusNode = FocusNode(debugLabel: 'sort_chip');
@override
void dispose() {
_cancelToken?.cancel();
_groupingChipFocusNode.dispose();
_filtersChipFocusNode.dispose();
_sortChipFocusNode.dispose();
super.dispose();
}
// Override loadData to use our custom _loadContent
@override
Future<List<PlexMetadata>> loadData() async {
// This is called by base class loadItems(), but we override loadItems() entirely
// So this just returns empty - actual loading is done in _loadContent
return [];
}
// Override loadItems to use our custom loading with pagination
@override
Future<void> loadItems() async {
await _loadContent();
}
// Required abstract implementations from base class
@override
IconData get emptyIcon => Symbols.folder_open_rounded;
@override
String get emptyMessage => t.libraries.thisLibraryIsEmpty;
@override
String get errorContext => t.libraries.content;
// Override buildContent - not used since we override build()
@override
Widget buildContent(List<PlexMetadata> items) => const SizedBox.shrink();
/// Focus the first item in the grid/list (for tab activation)
@override
void focusFirstItem() {
if (items.isNotEmpty) {
// Request immediately, then once more on the next frame to handle cases
// where the grid/list attaches after the initial focus attempt.
void request() {
if (mounted && items.isNotEmpty && !firstItemFocusNode.hasFocus) {
firstItemFocusNode.requestFocus();
}
}
request();
WidgetsBinding.instance.addPostFrameCallback((_) => request());
}
}
Future<void> _loadContent() async {
// Cancel any pending request
_cancelToken?.cancel();
_cancelToken = CancelToken();
final currentRequestId = ++_requestId;
// Extract context dependencies before async gap - use server-specific client
final client = getClientForLibrary();
setState(() {
isLoading = true;
errorMessage = null;
items = [];
_currentPage = 0;
_hasMoreItems = true;
// Clear filter/sort state while loading to prevent showing stale options
_filters = [];
_sortOptions = [];
_selectedFilters = {};
_selectedSort = null;
_isSortDescending = false;
_selectedGrouping = _getDefaultGrouping();
});
try {
final storage = await StorageService.getInstance();
// Load filters and sorts for this library
final filters = await client.getLibraryFilters(widget.library.key);
final sorts = await client.getLibrarySorts(widget.library.key);
// Load saved preferences
final savedFilters = storage.getLibraryFilters(
sectionId: widget.library.globalKey,
);
final savedSort = storage.getLibrarySort(widget.library.globalKey);
final savedGrouping = storage.getLibraryGrouping(
widget.library.globalKey,
);
// Check if request was cancelled
if (currentRequestId != _requestId) return;
setState(() {
_filters = filters;
_sortOptions = sorts;
_selectedFilters = Map.from(savedFilters);
_selectedGrouping = savedGrouping ?? _getDefaultGrouping();
// Restore sort
if (savedSort != null) {
final sortKey = savedSort['key'] as String?;
if (sortKey != null) {
final sort = sorts.where((s) => s.key == sortKey).firstOrNull;
if (sort != null) {
_selectedSort = sort;
_isSortDescending = (savedSort['descending'] as bool?) ?? false;
}
}
}
});
// Load items
await _loadItems();
} catch (e) {
_handleLoadError(e, currentRequestId);
}
}
Future<void> _loadItems({bool loadMore = false}) async {
if (loadMore && isLoading) return;
if (!loadMore) {
_currentPage = 0;
_hasMoreItems = true;
}
if (!_hasMoreItems) return;
final currentRequestId = _requestId;
_cancelToken?.cancel();
_cancelToken = CancelToken();
setState(() {
isLoading = true;
if (!loadMore) {
items = [];
}
});
try {
// Use server-specific client for this library
final client = getClientForLibrary();
// Build filter params
final filterParams = Map<String, String>.from(_selectedFilters);
// Add grouping type filter (but not for 'all' or 'folders')
if (_selectedGrouping != 'all' && _selectedGrouping != 'folders') {
final typeId = _getGroupingTypeId();
if (typeId.isNotEmpty) {
filterParams['type'] = typeId;
}
}
// Add sort
if (_selectedSort != null) {
filterParams['sort'] = _selectedSort!.getSortKey(
descending: _isSortDescending,
);
}
// Items are automatically tagged with server info by PlexClient
final loadedItems = await client.getLibraryContent(
widget.library.key,
start: _currentPage * _pageSize,
size: _pageSize,
filters: filterParams,
cancelToken: _cancelToken,
);
if (currentRequestId != _requestId) return;
setState(() {
if (loadMore) {
items.addAll(loadedItems);
} else {
items = loadedItems;
}
_hasMoreItems = loadedItems.length >= _pageSize;
_currentPage++;
isLoading = false;
});
// On initial load (not pagination), mark data as loaded and try to focus
if (!loadMore) {
hasLoadedData = true;
tryFocus();
// Notify parent
if (widget.onDataLoaded != null) {
WidgetsBinding.instance.addPostFrameCallback((_) {
widget.onDataLoaded!();
});
}
}
} catch (e) {
_handleLoadError(e, currentRequestId);
}
}
void _handleLoadError(dynamic error, int currentRequestId) {
if (currentRequestId != _requestId) return;
setState(() {
errorMessage = _getErrorMessage(error);
isLoading = false;
});
}
String _getDefaultGrouping() {
final type = widget.library.type.toLowerCase();
if (type == 'show') {
return 'shows';
} else if (type == 'movie') {
return 'movies';
}
return 'all';
}
String _getGroupingTypeId() {
switch (_selectedGrouping) {
case 'movies':
return '1';
case 'shows':
return '2';
case 'seasons':
return '3';
case 'episodes':
return '4';
default:
return '';
}
}
List<String> _getGroupingOptions() {
final type = widget.library.type.toLowerCase();
if (type == 'show') {
return ['shows', 'seasons', 'episodes', 'folders'];
} else if (type == 'movie') {
return ['movies', 'folders'];
}
// All library types support folder browsing
return ['all', 'folders'];
}
String _getGroupingLabel(String grouping) {
switch (grouping) {
case 'movies':
return t.libraries.groupings.movies;
case 'shows':
return t.libraries.groupings.shows;
case 'seasons':
return t.libraries.groupings.seasons;
case 'episodes':
return t.libraries.groupings.episodes;
case 'folders':
return t.libraries.groupings.folders;
default:
return t.libraries.groupings.all;
}
}
String _getErrorMessage(dynamic error) {
if (error is DioException) {
return mapDioErrorToMessage(error, context: t.libraries.content);
}
return mapUnexpectedErrorToMessage(error, context: t.libraries.content);
}
void _showGroupingBottomSheet() {
showModalBottomSheet(
context: context,
builder: (sheetContext) {
final options = _getGroupingOptions();
return ListView.builder(
shrinkWrap: true,
itemCount: options.length,
itemBuilder: (context, index) {
final grouping = options[index];
return RadioListTile<String>(
title: Text(_getGroupingLabel(grouping)),
value: grouping,
groupValue: _selectedGrouping,
onChanged: (value) async {
if (value != null) {
setState(() {
_selectedGrouping = value;
});
final storage = await StorageService.getInstance();
await storage.saveLibraryGrouping(
widget.library.globalKey,
value,
);
if (!sheetContext.mounted) return;
Navigator.pop(sheetContext);
_loadItems();
}
},
);
},
);
},
);
}
void _showFiltersBottomSheet() {
showModalBottomSheet(
context: context,
isScrollControlled: true,
builder: (context) => FiltersBottomSheet(
filters: _filters,
selectedFilters: _selectedFilters,
serverId: widget.library.serverId!,
onFiltersChanged: (filters) async {
setState(() {
_selectedFilters.clear();
_selectedFilters.addAll(filters);
});
// Save filters to storage
final storage = await StorageService.getInstance();
await storage.saveLibraryFilters(
filters,
sectionId: widget.library.globalKey,
);
_loadItems();
},
),
);
}
void _showSortBottomSheet() {
showModalBottomSheet(
context: context,
isScrollControlled: true,
builder: (context) => SortBottomSheet(
sortOptions: _sortOptions,
selectedSort: _selectedSort,
isSortDescending: _isSortDescending,
onSortChanged: (sort, descending) {
setState(() {
_selectedSort = sort;
_isSortDescending = descending;
});
StorageService.getInstance().then((storage) {
storage.saveLibrarySort(
widget.library.globalKey,
sort.key,
descending: descending,
);
});
_loadItems();
},
),
);
}
/// Navigate focus from chips down to the first grid item
void _navigateToGrid() {
if (items.isNotEmpty) {
firstItemFocusNode.requestFocus();
}
}
/// Navigate focus from grid up to the grouping chip
void _navigateToChips() {
_groupingChipFocusNode.requestFocus();
}
/// Calculate the number of columns in the current grid based on screen width
int _getGridColumnCount(
BuildContext context,
SettingsProvider settingsProvider,
) {
final screenWidth =
MediaQuery.of(context).size.width - 16; // Subtract padding
final maxCrossAxisExtent = GridSizeCalculator.getMaxCrossAxisExtent(
context,
settingsProvider.libraryDensity,
);
return (screenWidth / maxCrossAxisExtent).floor().clamp(1, 100);
}
/// Check if the given index is in the first row of the grid
bool _isFirstRow(int index, int columnCount) {
return index < columnCount;
}
@override
Widget build(BuildContext context) {
super.build(context); // Required for AutomaticKeepAliveClientMixin
return Column(
children: [
// Filter bar with chips
Container(
padding: const EdgeInsets.fromLTRB(16, 8, 16, 8),
alignment: Alignment.centerLeft,
child: SingleChildScrollView(
scrollDirection: Axis.horizontal,
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
// Grouping chip
FocusableFilterChip(
focusNode: _groupingChipFocusNode,
icon: Symbols.category_rounded,
label: _getGroupingLabel(_selectedGrouping),
onPressed: _showGroupingBottomSheet,
onNavigateDown: _navigateToGrid,
onNavigateUp: widget.onBack,
onBack: widget.onBack,
),
const SizedBox(width: 8),
// Filters chip
if (_filters.isNotEmpty && _selectedGrouping != 'folders')
FocusableFilterChip(
focusNode: _filtersChipFocusNode,
icon: Symbols.filter_alt_rounded,
label: _selectedFilters.isEmpty
? t.libraries.filters
: t.libraries.filtersWithCount(
count: _selectedFilters.length,
),
onPressed: _showFiltersBottomSheet,
onNavigateDown: _navigateToGrid,
onNavigateUp: widget.onBack,
onBack: widget.onBack,
),
if (_filters.isNotEmpty && _selectedGrouping != 'folders')
const SizedBox(width: 8),
// Sort chip
if (_sortOptions.isNotEmpty && _selectedGrouping != 'folders')
FocusableFilterChip(
focusNode: _sortChipFocusNode,
icon: Symbols.sort_rounded,
label: _selectedSort?.title ?? t.libraries.sort,
onPressed: _showSortBottomSheet,
onNavigateDown: _navigateToGrid,
onNavigateUp: widget.onBack,
onBack: widget.onBack,
),
],
),
),
),
// Content
Expanded(child: _buildContent()),
],
);
}
Widget _buildContent() {
// Show folder tree view when in folders mode
if (_selectedGrouping == 'folders') {
return FolderTreeView(
libraryKey: widget.library.key,
serverId: widget.library.serverId,
onRefresh: updateItem,
);
}
if (isLoading && items.isEmpty) {
return const Center(child: CircularProgressIndicator());
}
if (errorMessage != null && items.isEmpty) {
return ErrorStateWidget(
message: errorMessage!,
icon: Symbols.error_outline_rounded,
onRetry: _loadContent,
retryLabel: t.common.retry,
);
}
if (items.isEmpty) {
return EmptyStateWidget(
message: t.libraries.thisLibraryIsEmpty,
icon: Symbols.folder_open_rounded,
);
}
return NotificationListener<ScrollNotification>(
onNotification: (notification) {
if (notification.metrics.pixels >=
notification.metrics.maxScrollExtent - 300 &&
_hasMoreItems &&
!isLoading) {
_loadItems(loadMore: true);
}
return false;
},
child: Consumer<SettingsProvider>(
builder: (context, settingsProvider, child) {
return _buildItemsView(context, settingsProvider);
},
),
);
}
/// Builds either a list or grid view based on the view mode
Widget _buildItemsView(
BuildContext context,
SettingsProvider settingsProvider,
) {
final itemCount = items.length + (_hasMoreItems && isLoading ? 1 : 0);
if (settingsProvider.viewMode == ViewMode.list) {
// In list view, only the first item can navigate up to chips
return ListView.builder(
padding: const EdgeInsets.all(8),
itemCount: itemCount,
itemBuilder: (context, index) =>
_buildMediaCardItem(index, isFirstRow: index == 0),
);
} else {
// In grid view, calculate columns and pass to item builder
final columnCount = _getGridColumnCount(context, settingsProvider);
return GridView.builder(
padding: const EdgeInsets.all(8),
gridDelegate: MediaGridDelegate.createDelegate(
context: context,
density: settingsProvider.libraryDensity,
),
itemCount: itemCount,
itemBuilder: (context, index) => _buildMediaCardItem(
index,
isFirstRow: _isFirstRow(index, columnCount),
),
);
}
}
Widget _buildMediaCardItem(int index, {required bool isFirstRow}) {
if (index >= items.length) {
return const Padding(
padding: EdgeInsets.all(16.0),
child: Center(child: CircularProgressIndicator()),
);
}
final item = items[index];
return FocusableMediaCard(
key: Key(item.ratingKey),
item: item,
focusNode: index == 0 ? firstItemFocusNode : null,
onRefresh: updateItem,
onNavigateUp: isFirstRow ? _navigateToChips : null,
onBack: widget.onBack,
);
}
}