import 'package:eatvio_app/features/payment/models/promo_applied_list_response.dart';
import 'package:eatvio_app/features/payment/models/promo_apply_response.dart';
import 'package:eatvio_app/features/payment/models/promo_code_model.dart';
import 'package:eatvio_app/features/payment/models/promo_validate_response.dart';
import 'package:flutter_test/flutter_test.dart';

void main() {
  group('PromoValidateResponse', () {
    test('parses valid preview', () {
      final response = PromoValidateResponse.fromJson({
        'valid': true,
        'promo_code': 'PROMO_100117_A',
        'discount_percent': 5,
        'discount_amount_rub': 60.0,
        'original_amount_rub': 1200.0,
        'final_amount_rub': 1140.0,
      });

      expect(response.valid, isTrue);
      expect(response.promoCode, 'PROMO_100117_A');
      expect(response.discountPercent, 5);
      expect(response.finalAmountRub, 1140.0);
      expect(response.error, isNull);
    });

    test('parses invalid preview with HTTP 200 body', () {
      final response = PromoValidateResponse.fromJson({
        'valid': false,
        'error': 'Промокод «UNKNOWN» не найден в системе.',
      });

      expect(response.valid, isFalse);
      expect(response.error, contains('не найден'));
    });
  });

  group('PromoApplyResponse', () {
    test('parses success with nested promo_code', () {
      final response = PromoApplyResponse.fromJson({
        'success': true,
        'promo_code': {
          'id': 1,
          'chosen_plan_id': 42,
          'promo_code': 'PROMO_100117_A',
          'discount_percent': 5,
          'discount_amount_rub': 60.0,
          'state': 'applied',
          'applied_at': '2024-01-15T10:30:00+00:00',
          'confirmed_at': null,
          'cancelled_at': null,
        },
        'discount_percent': 5,
        'discount_amount_rub': 60.0,
        'original_amount_rub': 1200.0,
        'final_amount_rub': 1140.0,
      });

      expect(response.success, isTrue);
      expect(response.promoCode, isA<PromoCodeModel>());
      expect(response.promoCode!.promoCode, 'PROMO_100117_A');
      expect(response.promoCode!.state, 'applied');
      expect(response.finalAmountRub, 1140.0);
    });

    test('parses failure body', () {
      final response = PromoApplyResponse.fromJson({
        'success': false,
        'error': 'Промокод «X» уже был использован вами ранее.',
      });

      expect(response.success, isFalse);
      expect(response.error, contains('уже был использован'));
      expect(response.promoCode, isNull);
    });
  });

  group('PromoAppliedListResponse', () {
    test('parses promo_codes list', () {
      final response = PromoAppliedListResponse.fromJson({
        'promo_codes': [
          {
            'id': 2,
            'chosen_plan_id': 42,
            'promo_code': 'PROMO_LIST_B',
            'discount_percent': 3,
            'discount_amount_rub': 36.0,
            'state': 'applied',
            'applied_at': '2024-01-15T10:30:00+00:00',
            'confirmed_at': null,
            'cancelled_at': null,
          },
        ],
      });

      expect(response.promoCodes, hasLength(1));
      expect(response.promoCodes.first.promoCode, 'PROMO_LIST_B');
      expect(response.promoCodes.first.chosenPlanId, 42);
    });

    test('parses empty list', () {
      final response = PromoAppliedListResponse.fromJson({
        'promo_codes': <dynamic>[],
      });

      expect(response.promoCodes, isEmpty);
    });
  });
}