import 'package:flutter_test/flutter_test.dart';
import 'package:jiu_client/models/license.dart';

void main() {
  group('PurchaseOrder.fromJson() — pay v2 契约', () {
    test('解析 redirect 形态（render_type/payload/amount_minor）', () {
      final order = PurchaseOrder.fromJson({
        'order_no': 'pay-abc123',
        'out_trade_no': 'pay-abc123',
        'render_type': 'redirect',
        'payload': {'url': 'https://pay.example.com/checkout/abc123'},
        'amount_minor': 299900,
        'currency': 'CNY',
        'subject': '酒库管理系统 - 年度授权',
        'pay_url': 'https://pay.example.com/checkout/abc123',
        'amount': '2999.00',
      });

      expect(order.outTradeNo, 'pay-abc123');
      expect(order.renderType, 'redirect');
      expect(order.amountMinor, 299900);
      expect(order.currency, 'CNY');
      expect(order.subject, '酒库管理系统 - 年度授权');
      expect(order.redirectUrl, 'https://pay.example.com/checkout/abc123');
      // 兼容 getter：Task 7 前 purchase_card.dart 仍读 payUrl/amount
      expect(order.payUrl, order.redirectUrl);
      expect(order.amount, '2,999.00');
    });

    test('解析 qr 形态 payload', () {
      final order = PurchaseOrder.fromJson({
        'out_trade_no': 'pay-qr1',
        'render_type': 'qr',
        'payload': {'qr_content': 'weixin://wxpay/bizpayurl?pr=xxx'},
        'amount_minor': 100,
        'currency': 'CNY',
        'subject': '月度授权',
      });

      expect(order.renderType, 'qr');
      expect(order.qrContent, 'weixin://wxpay/bizpayurl?pr=xxx');
      expect(order.redirectUrl, '');
    });
  });

  group('PurchaseStatusInfo.fromJson()', () {
    test('解析 paid 状态，amount_minor 优先于 amount 串', () {
      final status = PurchaseStatusInfo.fromJson({
        'out_trade_no': 'pay-abc123',
        'status': 'paid',
        'product_biz_code': 'annual',
        'amount_minor': 299900,
        'currency': 'CNY',
        'amount': '2999.00',
        'paid_at': '2026-07-10T10:00:00Z',
        'expires_at': '2027-07-10T00:00:00Z',
      });

      expect(status.isPaid, isTrue);
      expect(status.amountMinor, 299900);
      expect(status.currency, 'CNY');
      expect(status.displayAmount, '2,999.00');
      expect(status.paidAt, isNotNull);
      expect(status.expiresAt, isNotNull);
    });

    test('amount_minor 缺失时回退旧 amount 串', () {
      final status = PurchaseStatusInfo.fromJson({
        'out_trade_no': 'pay-legacy',
        'status': 'pending',
        'amount': '99.00',
      });

      expect(status.amountMinor, 0);
      expect(status.displayAmount, '99.00');
    });
  });

  group('PurchaseRecord.fromJson()（订单列表项）', () {
    test('解析完整订单列表项', () {
      final record = PurchaseRecord.fromJson({
        'out_trade_no': 'pay-abc123',
        'product_biz_code': 'annual',
        'amount_minor': 299900,
        'currency': 'CNY',
        'amount': '2999.00',
        'status': 'paid',
        'pay_url': 'https://pay.example.com/checkout/abc123',
        'user_name': '张三',
        'created_at': '2026-07-01T10:00:00Z',
        'paid_at': '2026-07-01T10:05:00Z',
        'renewed_to': '2027-07-01T00:00:00Z',
      });

      expect(record.outTradeNo, 'pay-abc123');
      expect(record.productBizCode, 'annual');
      expect(record.amountMinor, 299900);
      expect(record.displayAmount, '2,999.00');
      expect(record.isPaid, isTrue);
      expect(record.userName, '张三');
      expect(record.createdAt, isNotNull);
      expect(record.paidAt, isNotNull);
      expect(record.renewedTo, isNotNull);
    });

    test('缺省可选字段不报错', () {
      final record = PurchaseRecord.fromJson({
        'out_trade_no': 'pay-pending1',
        'product_biz_code': 'monthly',
        'amount_minor': 9900,
        'currency': 'CNY',
        'amount': '99.00',
        'status': 'pending',
        'pay_url': '',
        'user_name': '',
      });

      expect(record.isPaid, isFalse);
      expect(record.paidAt, isNull);
      expect(record.renewedTo, isNull);
    });
  });

  group('PurchaseListResult.fromJson()', () {
    test('解析 items + total + summary', () {
      final result = PurchaseListResult.fromJson({
        'items': [
          {
            'out_trade_no': 'pay-1',
            'product_biz_code': 'annual',
            'amount_minor': 299900,
            'currency': 'CNY',
            'amount': '2999.00',
            'status': 'paid',
            'pay_url': '',
            'user_name': '张三',
          },
        ],
        'total': 1,
        'summary': {
          'paid_total_minor': 299900,
          'paid_count': 1,
          'pending_count': 0,
          'total_count': 1,
        },
      });

      expect(result.items.length, 1);
      expect(result.total, 1);
      expect(result.summary.paidTotalMinor, 299900);
      expect(result.summary.paidCount, 1);
      expect(result.summary.pendingCount, 0);
      expect(result.summary.totalCount, 1);
    });

    test('空列表不报错', () {
      final result = PurchaseListResult.fromJson({'items': [], 'total': 0});
      expect(result.items, isEmpty);
      expect(result.summary.totalCount, 0);
    });
  });
}