106 lines
3.1 KiB
Dart
106 lines
3.1 KiB
Dart
/// Coordinates Today Screen Controller state for the FocusFlow Flutter UI.
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library;
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import 'package:flutter/foundation.dart';
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import 'package:scheduler_core/scheduler_core.dart';
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import '../models/today_screen_models.dart';
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/// Reads Today state from the scheduler application layer.
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typedef TodayStateReader = Future<ApplicationResult<TodayState>> Function();
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/// Base state for the compact Today screen.
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sealed class TodayScreenState {
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/// Creates a Today screen state.
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const TodayScreenState();
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}
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/// Indicates that the Today screen is loading.
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class TodayScreenLoading extends TodayScreenState {
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/// Creates a loading Today screen state.
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const TodayScreenLoading();
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}
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/// Indicates that the Today screen has renderable timeline data.
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class TodayScreenReady extends TodayScreenState {
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/// Creates a ready state with mapped screen [data].
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const TodayScreenReady(this.data);
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/// Presentation model for the Today screen.
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final TodayScreenData data;
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}
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/// Indicates that the Today screen loaded successfully with no cards.
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class TodayScreenEmpty extends TodayScreenState {
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/// Creates an empty Today screen state.
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const TodayScreenEmpty();
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}
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/// Indicates that the Today screen failed to load.
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class TodayScreenFailure extends TodayScreenState {
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/// Creates a failure state with a displayable [message].
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const TodayScreenFailure(this.message);
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/// User-facing failure message or code.
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final String message;
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}
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/// Loads Today screen data and tracks selected timeline cards.
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class TodayScreenController extends ChangeNotifier {
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/// Creates a Today screen controller from a read callback.
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TodayScreenController({required this.read});
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/// Callback used to read Today state.
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final TodayStateReader read;
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TodayScreenState _state = const TodayScreenLoading();
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TimelineCardModel? _selectedCard;
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/// Current Today screen loading/data/failure state.
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TodayScreenState get state => _state;
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/// Currently selected timeline card, if a modal should be visible.
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TimelineCardModel? get selectedCard => _selectedCard;
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/// Loads Today state and maps it into presentation data.
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Future<void> load() async {
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_state = const TodayScreenLoading();
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notifyListeners();
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try {
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final result = await read();
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final failure = result.failure;
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if (failure != null) {
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_state = TodayScreenFailure(failure.detailCode ?? failure.code.name);
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notifyListeners();
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return;
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}
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final data = TodayScreenData.fromTodayState(result.requireValue);
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_state = data.cards.isEmpty
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? const TodayScreenEmpty()
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: TodayScreenReady(data);
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notifyListeners();
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} on Object catch (error) {
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_state = TodayScreenFailure(error.toString());
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notifyListeners();
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}
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}
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/// Selects [card] when the card allows selection.
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void selectCard(TimelineCardModel card) {
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if (!card.isSelectable) {
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return;
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}
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_selectedCard = card;
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notifyListeners();
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}
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/// Clears the selected timeline card.
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void clearSelection() {
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if (_selectedCard == null) {
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return;
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}
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_selectedCard = null;
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notifyListeners();
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}
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}
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