import 'package:flutter_bloc/flutter_bloc.dart';

import '../../../core/api/api_exception.dart';
import '../../../core/ui/view_status.dart';
import '../data/rewards_repository.dart';

class RewardsState {
  const RewardsState({
    this.status = ViewStatus.idle,
    this.referrals,
    this.coupons = const [],
    this.error,
  });

  final ViewStatus status;
  final ReferralSummary? referrals;
  final List<Coupon> coupons;
  final String? error;
}

class RewardsCubit extends Cubit<RewardsState> {
  RewardsCubit(this._repo) : super(const RewardsState());

  final RewardsRepository _repo;

  Future<void> load() async {
    emit(const RewardsState(status: ViewStatus.loading));
    try {
      // النداءان متوازيان: لا سبب لانتظار أحدهما الآخر.
      final results = await Future.wait([
        _repo.referrals(),
        _repo.coupons(),
      ]);
      if (isClosed) return;
      emit(RewardsState(
        status: ViewStatus.success,
        referrals: results[0] as ReferralSummary,
        coupons: results[1] as List<Coupon>,
      ));
    } on ApiException catch (e) {
      if (!isClosed) {
        emit(RewardsState(status: ViewStatus.error, error: e.message));
      }
    }
  }
}