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Created redux middleware to store timers

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Signed-off-by: Andreas Fahrecker <AndreasFahrecker@gmail.com>
This commit is contained in:
Andreas Fahrecker 2020-10-13 15:08:01 +02:00
parent 51448c5555
commit 90b19e304d
1 changed files with 42 additions and 0 deletions
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lib/middleware/store_timers_middleware.dart Normal file
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import 'package:redux/redux.dart';
import 'package:time_progress_calculator/actions/timer_actions.dart';
import 'package:time_progress_calculator/models/app_state.dart';
import 'package:time_progress_calculator/models/timer.dart';
import 'package:time_progress_calculator/persistence/timer_entity.dart';
import 'package:time_progress_calculator/persistence/timers_repository.dart';
import 'package:time_progress_calculator/selectors/timer_selectors.dart';
List<Middleware<AppState>> createStoreTimersMiddleware(
TimersRepository repository) {
final saveTimers = _createSaveTimers(repository);
final loadTimers = _createLoadTimers(repository);
return [
TypedMiddleware<AppState, LoadTimersAction>(loadTimers),
TypedMiddleware<AppState, AddTimerAction>(saveTimers),
TypedMiddleware<AppState, UpdateTimerAction>(saveTimers),
TypedMiddleware<AppState, DeleteTimerAction>(saveTimers),
];
}
Middleware<AppState> _createSaveTimers(TimersRepository repository) {
return (Store<AppState> store, dynamic action, NextDispatcher next) {
next(action);
repository.saveTimers(
timersSelector(store.state)
.map<TimerEntity>((timer) => timer.toEntity())
.toList(growable: false),
);
};
}
Middleware<AppState> _createLoadTimers(TimersRepository repository) {
return (Store<AppState> store, dynamic action, NextDispatcher next) {
repository.loadTimers().then((timers) {
store.dispatch(
TimersLoadedAction(timers.map<Timer>(Timer.fromEntity).toList()),
);
}).catchError((_) => store.dispatch(TimersNotLoadedAction()));
};
}