// lib/state/daily_reward_notifier.dart
import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../data/save_repository.dart';
import '../game/daily/daily_reward.dart';
import 'providers.dart';

class DailyRewardNotifier extends Notifier<DailyResolution> {
  static const _cal = DailyRewardCalendar();

  SaveRepository get _save => ref.read(saveRepositoryProvider);
  DateTime Function() get _now => ref.read(dailyNowProvider);

  @override
  DailyResolution build() => _resolve();

  DailyResolution _resolve() => _cal.resolve(
        lastClaimedYmd: _save.dailyLastClaimedYmd,
        storedDay: _save.dailyCalendarDay,
        today: _now(),
      );

  /// Grants the current day's reward (×2 if [doubled]) and records the claim.
  Future<void> claim({bool doubled = false}) async {
    final r = state;
    if (!r.claimable) return;
    final reward = _cal.rewardFor(r.day);
    // Record the claim BEFORE granting, so a crash mid-claim forfeits at most
    // one reward rather than leaving the day unrecorded (which would let the
    // player re-claim and farm boosters on the next launch).
    await _save.recordDailyClaim(_cal.ymd(_now()), r.day);
    final inv = ref.read(boosterInventoryProvider.notifier);
    for (final entry in reward.entries) {
      await inv.grant(entry.key, entry.value * (doubled ? 2 : 1));
    }
    ref.read(analyticsProvider).dailyRewardClaimed(day: r.day, doubled: doubled);
    for (final e in reward.entries) {
      ref.read(analyticsProvider).boosterGranted(
            type: e.key.name,
            count: e.value * (doubled ? 2 : 1),
            source: 'daily',
          );
    }
    state = _resolve();
  }
}