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Client/lib/view/pages/timetable/timetable.dart
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Dart

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import '../../../api/marianumconnect/queries/timetable_get_element_week/timetable_element_type.dart';
import '../../../extensions/date_time.dart';
import '../../../routing/app_routes.dart';
import '../../../state/app/infrastructure/loadable_state/view/loadable_state_consumer.dart';
import '../../../state/app/modules/capabilities/bloc/capabilities_cubit.dart';
import '../../../state/app/modules/foreign_timetable/bloc/foreign_timetable_bloc.dart';
import '../../../state/app/modules/settings/bloc/settings_cubit.dart';
import '../../../state/app/modules/timetable/bloc/timetable_bloc.dart';
import '../../../state/app/modules/timetable/bloc/timetable_state.dart';
import '../../../utils/haptics.dart';
import 'custom_events/custom_event_edit_dialog.dart';
import 'details/appointment_details_dispatcher.dart';
import 'widgets/timetable_calendar_view.dart';
enum _CalendarAction { addEvent, viewEvents }
class Timetable extends StatefulWidget {
const Timetable({super.key});
@override
State<Timetable> createState() => _TimetableState();
}
class _TimetableState extends State<Timetable> {
final GlobalKey<TimetableCalendarViewState> _calendarKey =
GlobalKey<TimetableCalendarViewState>();
/// When non-null the view shows this element's plan inline instead of the
/// user's own. Cleared (back to own plan) via the viewing banner.
TimetableElementRef? _selected;
DateTime _initialDisplayDate() => DateTime.now().addDays(2);
void _jumpToToday() {
_calendarKey.currentState?.jumpToToday();
}
bool _isOnInitialWeek(TimetableState state) =>
state.startDate == _mondayOf(_initialDisplayDate());
Future<void> _openPicker() async {
final ref = await AppRoutes.openElementPicker(context);
if (!mounted || ref == null) return;
setState(() => _selected = ref);
}
void _backToOwnPlan() {
setState(() => _selected = null);
}
void _onAction(_CalendarAction action) {
switch (action) {
case _CalendarAction.addEvent:
showDialog(
context: context,
builder: (_) => const CustomEventEditDialog(),
barrierDismissible: false,
);
case _CalendarAction.viewEvents:
AppRoutes.openCustomEvents(context);
}
}
void _onCreateEventAt(DateTime start, DateTime end) {
showDialog(
context: context,
builder: (_) =>
CustomEventEditDialog(initialStart: start, initialEnd: end),
barrierDismissible: false,
);
}
@override
Widget build(BuildContext context) {
final selected = _selected;
if (selected == null) return _buildOwnPlan(context);
// Scope the foreign bloc to the current selection so switching elements
// (or back to the own plan) tears it down and builds a fresh one.
return BlocProvider<ForeignTimetableBloc>(
key: ValueKey('${selected.type.name}-${selected.id}'),
create: (_) => ForeignTimetableBloc(
type: selected.type,
elementId: selected.id,
title: selected.label,
),
// Builder gives us a context *below* the provider so the foreign bloc is
// resolvable inside _buildForeignPlan.
child: Builder(
builder: (context) => _buildForeignPlan(context, selected),
),
);
}
Widget _buildOwnPlan(BuildContext context) {
final bloc = context.read<TimetableBloc>();
final loadableState = context.watch<TimetableBloc>().state;
final innerState = loadableState.data;
final atToday = innerState != null && _isOnInitialWeek(innerState);
final canViewForeign = context
.watch<CapabilitiesCubit>()
.canViewForeignTimetables;
return Scaffold(
appBar: AppBar(
title: const Text('Stunden & Vertretungsplan'),
actions: [
IconButton(
icon: const Icon(Icons.home_outlined),
onPressed: atToday ? null : _jumpToToday,
),
PopupMenuButton<_CalendarAction>(
icon: const Icon(Icons.edit_calendar_outlined),
onSelected: _onAction,
itemBuilder: (_) => const [
PopupMenuItem(
value: _CalendarAction.addEvent,
child: ListTile(
title: Text('Kalendereintrag hinzufügen'),
leading: Icon(Icons.add),
),
),
PopupMenuItem(
value: _CalendarAction.viewEvents,
child: ListTile(
title: Text('Kalendereinträge anzeigen'),
leading: Icon(Icons.perm_contact_calendar_outlined),
),
),
],
),
if (canViewForeign)
IconButton(
icon: const Icon(Icons.person_search),
tooltip: 'Anderen Stundenplan öffnen',
onPressed: _openPicker,
),
],
),
body: LoadableStateConsumer<TimetableBloc, TimetableState>(
// Without this predicate the consumer treats the freshly-initialised
// empty TimetableState as "has content" and only shows the error bar
// on top — but the calendar view collapses to `SizedBox.shrink()`
// while the reference data is missing, leaving the user with a blank
// screen. Telling the consumer that "ready" means having reference
// data flips it into the proper error-screen path instead.
isReady: (state) => state.hasReferenceData,
child: (state, _) => TimetableCalendarView(
key: _calendarKey,
state: state,
onWeekChanged: bloc.changeWeek,
onAppointmentTap: (apt) =>
AppointmentDetailsDispatcher.show(context, state, apt),
onCreateEvent: _onCreateEventAt,
customEvents: state.customEvents?.events ?? const [],
),
),
);
}
Widget _buildForeignPlan(BuildContext context, TimetableElementRef selected) {
final bloc = context.read<ForeignTimetableBloc>();
final loadableState = context.watch<ForeignTimetableBloc>().state;
final innerState = loadableState.data;
final atToday = innerState != null && _isOnInitialWeek(innerState);
final canViewForeign = context
.watch<CapabilitiesCubit>()
.canViewForeignTimetables;
return Scaffold(
appBar: AppBar(
title: const Text('Stunden & Vertretungsplan'),
actions: [
IconButton(
icon: const Icon(Icons.home_outlined),
onPressed: atToday ? null : _jumpToToday,
),
if (canViewForeign)
IconButton(
icon: const Icon(Icons.person_search),
tooltip: 'Anderen Stundenplan öffnen',
onPressed: _openPicker,
),
],
),
body: Column(
children: [
_ViewingBanner(element: selected, onClose: _backToOwnPlan),
Expanded(
child: LoadableStateConsumer<ForeignTimetableBloc, TimetableState>(
// Foreign plans never carry custom events, so unlike the own-plan
// view we must not require `customEvents` here.
isReady: (state) =>
state.rooms != null &&
state.subjects != null &&
state.schoolHolidays != null,
child: (state, _) => TimetableCalendarView(
key: _calendarKey,
state: state,
onWeekChanged: bloc.changeWeek,
onAppointmentTap: (apt) =>
AppointmentDetailsDispatcher.show(context, state, apt),
customEvents: const [],
),
),
),
],
),
);
}
static DateTime _mondayOf(DateTime d) {
final monday = d.subtractDays(d.weekday - 1);
return DateTime(monday.year, monday.month, monday.day);
}
}
/// Slim banner shown at the top of the timetable while a foreign element's plan
/// is being viewed. Displays which element is shown, lets the user star it, and
/// offers a one-tap return to the own plan.
class _ViewingBanner extends StatelessWidget {
final TimetableElementRef element;
final VoidCallback onClose;
const _ViewingBanner({required this.element, required this.onClose});
void _toggleFavorite(BuildContext context) {
Haptics.selection();
context
.read<SettingsCubit>()
.val(write: true)
.timetableFavoritesSettings
.toggle(element.type, element.id, element.label);
}
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
final isFavorite = context
.watch<SettingsCubit>()
.val()
.timetableFavoritesSettings
.isFavorite(element.type, element.id);
final onColor = theme.colorScheme.onSecondaryContainer;
// Compact icon button: ~32px square, no extra padding, so the banner stays
// slim instead of inheriting the default 48px touch target height.
Widget compactButton({
required IconData icon,
required String tooltip,
required VoidCallback onPressed,
}) => IconButton(
icon: Icon(icon),
iconSize: 18,
color: onColor,
tooltip: tooltip,
visualDensity: VisualDensity.compact,
padding: EdgeInsets.zero,
constraints: const BoxConstraints(minWidth: 32, minHeight: 32),
onPressed: onPressed,
);
return Material(
color: theme.colorScheme.secondaryContainer,
child: Padding(
padding: const EdgeInsets.fromLTRB(16, 2, 6, 2),
child: Row(
children: [
Icon(_iconFor(element.type), size: 16, color: onColor),
const SizedBox(width: 10),
Expanded(
child: Text(
element.label,
style: theme.textTheme.labelLarge?.copyWith(color: onColor),
overflow: TextOverflow.ellipsis,
),
),
compactButton(
icon: isFavorite ? Icons.star : Icons.star_border,
tooltip: isFavorite ? 'Favorit entfernen' : 'Als Favorit markieren',
onPressed: () => _toggleFavorite(context),
),
const SizedBox(width: 4),
compactButton(
icon: Icons.close,
tooltip: 'Zurück zum eigenen Plan',
onPressed: onClose,
),
],
),
),
);
}
static IconData _iconFor(TimetableElementType type) {
switch (type) {
case TimetableElementType.student:
return Icons.person_outline;
case TimetableElementType.teacher:
return Icons.school_outlined;
case TimetableElementType.room:
return Icons.meeting_room_outlined;
case TimetableElementType.schoolClass:
return Icons.groups_outlined;
}
}
}