import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../../../app/error_message.dart';
import '../../../app/load_state.dart';
import '../../../models/stats_summary.dart';
import '../../shared/providers/core_providers.dart';

final statsProvider = NotifierProvider<StatsNotifier, LoadState<StatsSummary>>(
  () => StatsNotifier(),
);

class StatsNotifier extends Notifier<LoadState<StatsSummary>> {
  @override
  LoadState<StatsSummary> build() => const LoadState.idle(StatsSummary.empty);

  Future<void> load({int days = 7}) async {
    state = LoadState.loading(state.data);
    try {
      final api = ref.read(apiProvider);
      final res = await api.getStatsSummary(days: days);
      final stats = StatsSummary.fromApi(res.data);
      state = stats.groups.isEmpty
          ? LoadState.empty(stats)
          : LoadState.data(stats);
    } catch (e) {
      state = LoadState.error(state.data, describeLoadError(e));
    }
  }
}