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Created TimerRepository which saves timers list to sharedpreferences

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Signed-off-by: Andreas Fahrecker <AndreasFahrecker@gmail.com>
This commit is contained in:
Andreas Fahrecker 2020-10-13 15:07:06 +02:00
parent 86862a9d91
commit 51448c5555
1 changed files with 27 additions and 0 deletions
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lib/persistence/timers_repository.dart Normal file
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import 'dart:convert';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:time_progress_calculator/persistence/timer_entity.dart';
class TimersRepository {
static const String _key = "timers_repo";
final SharedPreferences prefs;
final JsonCodec codec;
TimersRepository(this.prefs, {this.codec = json});
Future<List<TimerEntity>> loadTimers() {
final String jsonString = this.prefs.getString(_key);
return codec
.decode(jsonString)["timers"]
.cast<Map<String, Object>>()
.map<TimerEntity>(TimerEntity.fromJson)
.toList(growable: false);
}
Future<bool> saveTimers(List<TimerEntity> timers) {
final String jsonString = codec
.encode({"timers": timers.map((timer) => timer.toJson()).toList()});
return this.prefs.setString(_key, jsonString);
}
}