import 'package:flutter_bloc/flutter_bloc.dart';

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

class WalletCubit extends Cubit<WalletState> {
  WalletCubit(this._repo) : super(const WalletState());

  final WalletRepository _repo;

  Future<void> load() async {
    emit(state.copyWith(status: ViewStatus.loading));
    try {
      final wallet = await _repo.wallet();
      final txns = await _repo.transactions();
      if (isClosed) return;
      emit(state.copyWith(
        status: ViewStatus.success,
        wallet: wallet,
        transactions: txns,
      ));
    } on ApiException catch (e) {
      if (!isClosed) {
        emit(state.copyWith(status: ViewStatus.error, error: e.message));
      }
    }
  }

  Future<void> topup(num amount) async {
    if (amount <= 0) return;
    emit(state.copyWith(action: WalletAction.toppingUp));
    try {
      await _repo.topup(amount);
      if (isClosed) return;
      emit(state.copyWith(action: WalletAction.topupDone));
      // الرصيد يُعاد جلبه من الخادم لا يُحسب محلياً: المال لا يُقدَّر
      // في التطبيق (docs/23 §0.2).
      await load();
    } on ApiException {
      if (!isClosed) emit(state.copyWith(action: WalletAction.topupFailed));
    }
  }
}