using HoneyBox.Core.Interfaces;
using HoneyBox.Core.Services;
using HoneyBox.Model.Data;
using HoneyBox.Model.Entities;
using HoneyBox.Model.Models.Order;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Diagnostics;
using Microsoft.Extensions.Logging;
using Moq;
using Xunit;

namespace HoneyBox.Tests.Integration;

/// <summary>
/// 订单服务集成测试
/// 测试完整的订单金额计算和订单创建流程
/// Requirements: 1.1-1.6, 2.1-2.6
/// </summary>
public class OrderServiceIntegrationTests
{
    private HoneyBoxDbContext CreateInMemoryDbContext()
    {
        var options = new DbContextOptionsBuilder<HoneyBoxDbContext>()
            .UseInMemoryDatabase(databaseName: Guid.NewGuid().ToString())
            .ConfigureWarnings(w => w.Ignore(InMemoryEventId.TransactionIgnoredWarning))
            .Options;

        return new HoneyBoxDbContext(options);
    }

    private OrderService CreateOrderService(HoneyBoxDbContext dbContext)
    {
        var mockLogger = new Mock<ILogger<OrderService>>();
        var mockLotteryEngine = new Mock<ILotteryEngine>();
        return new OrderService(dbContext, mockLogger.Object, mockLotteryEngine.Object);
    }

    #region 测试数据准备

    private async Task<User> CreateTestUserAsync(HoneyBoxDbContext dbContext, decimal money = 100, decimal integral = 1000, decimal money2 = 500)
    {
        var user = new User
        {
            Id = 1,
            OpenId = "test_openid",
            Uid = "test_uid",
            Nickname = "测试用户",
            HeadImg = "avatar.jpg",
            Mobile = "13800138000",
            Money = money,
            Integral = integral,
            Money2 = money2,
            IsTest = 0,
            Status = 1,
            CreatedAt = DateTime.Now,
            UpdatedAt = DateTime.Now
        };
        await dbContext.Users.AddAsync(user);
        await dbContext.SaveChangesAsync();
        return user;
    }

    private async Task<Good> CreateTestGoodsAsync(HoneyBoxDbContext dbContext, byte type = 1, decimal price = 10, int stock = 10)
    {
        // 添加商品类型
        await dbContext.GoodsTypes.AddAsync(new GoodsType
        {
            Value = type,
            Name = "一番赏",
            FlName = "一番赏",
            CornerText = "一番赏",
            PayWechat = 1,
            PayBalance = 1,
            PayCurrency = 1,
            PayCurrency2 = 1,
            PayCoupon = 1,
            IsDeduction = 1
        });

        var goods = new Good
        {
            Id = 1,
            Title = "测试商品",
            Type = type,
            Status = 1,
            ShowIs = 0,
            Price = price,
            Stock = stock,
            SaleStock = 0,
            LockIs = 0,
            IsShouZhe = 0,
            QuanjuXiangou = 0,
            DailyXiangou = 0,
            ChoujiangXianzhi = 0,
            ImgUrl = "img.jpg",
            ImgUrlDetail = "detail.jpg"
        };
        await dbContext.Goods.AddAsync(goods);
        await dbContext.SaveChangesAsync();
        return goods;
    }

    private async Task CreateTestGoodsItemsAsync(HoneyBoxDbContext dbContext, int goodsId, int num = 1)
    {
        // 添加奖品等级
        await dbContext.PrizeLevels.AddAsync(new PrizeLevel { Id = 10, Title = "A赏", Color = "#FF0000" });
        await dbContext.PrizeLevels.AddAsync(new PrizeLevel { Id = 11, Title = "B赏", Color = "#00FF00" });
        await dbContext.SaveChangesAsync();

        // 添加奖品
        var goodsItems = new List<GoodsItem>
        {
            new() { Id = 1, GoodsId = goodsId, Num = num, Title = "A赏奖品", Stock = 5, SurplusStock = 5, Price = 100, ScMoney = 50, ShangId = 10, GoodsListId = 0, ImgUrl = "a.jpg", Sort = 1 },
            new() { Id = 2, GoodsId = goodsId, Num = num, Title = "B赏奖品", Stock = 10, SurplusStock = 10, Price = 50, ScMoney = 25, ShangId = 11, GoodsListId = 0, ImgUrl = "b.jpg", Sort = 2 }
        };
        await dbContext.GoodsItems.AddRangeAsync(goodsItems);
        await dbContext.SaveChangesAsync();
    }

    #endregion

    #region 订单金额计算测试 (Requirements 1.1-1.6)

    /// <summary>
    /// 测试基本订单金额计算 - 无抵扣
    /// Requirements: 1.1
    /// </summary>
    [Fact]
    public async Task CalculateOrderMoney_BasicCalculation_ReturnsCorrectAmount()
    {
        // Arrange
        var dbContext = CreateInMemoryDbContext();
        var service = CreateOrderService(dbContext);

        await CreateTestUserAsync(dbContext);
        await CreateTestGoodsAsync(dbContext, price: 10);
        await CreateTestGoodsItemsAsync(dbContext, 1);

        var request = new OrderMoneyRequest
        {
            GoodsId = 1,
            Num = 1,
            PrizeNum = 3,
            UseMoneyIs = 2,
            UseIntegralIs = 2,
            UseMoney2Is = 2
        };

        // Act
        var result = await service.CalculateOrderMoneyAsync(1, request);

        // Assert
        Assert.NotNull(result);
        Assert.Equal("30.00", result.OrderTotal); // 10 * 3 = 30
        Assert.NotNull(result.Goods);
        Assert.Equal(1, result.Goods.Id);
    }

    /// <summary>
    /// 测试余额抵扣
    /// Requirements: 1.2
    /// </summary>
    [Fact]
    public async Task CalculateOrderMoney_WithBalanceDeduction_DeductsCorrectly()
    {
        // Arrange
        var dbContext = CreateInMemoryDbContext();
        var service = CreateOrderService(dbContext);

        await CreateTestUserAsync(dbContext, money: 20);
        await CreateTestGoodsAsync(dbContext, price: 10);
        await CreateTestGoodsItemsAsync(dbContext, 1);

        var request = new OrderMoneyRequest
        {
            GoodsId = 1,
            Num = 1,
            PrizeNum = 3,
            UseMoneyIs = 1, // 使用余额
            UseIntegralIs = 2,
            UseMoney2Is = 2
        };

        // Act
        var result = await service.CalculateOrderMoneyAsync(1, request);

        // Assert
        Assert.NotNull(result);
        Assert.Equal("20.00", result.UseMoney); // 使用20元余额
        Assert.Equal("10.00", result.Price); // 30 - 20 = 10
    }

    /// <summary>
    /// 测试积分抵扣 (1:100比例)
    /// Requirements: 1.3
    /// </summary>
    [Fact]
    public async Task CalculateOrderMoney_WithIntegralDeduction_DeductsCorrectly()
    {
        // Arrange
        var dbContext = CreateInMemoryDbContext();
        var service = CreateOrderService(dbContext);

        await CreateTestUserAsync(dbContext, money: 0, integral: 2000); // 2000积分 = 20元
        await CreateTestGoodsAsync(dbContext, price: 10);
        await CreateTestGoodsItemsAsync(dbContext, 1);

        var request = new OrderMoneyRequest
        {
            GoodsId = 1,
            Num = 1,
            PrizeNum = 3,
            UseMoneyIs = 2,
            UseIntegralIs = 1, // 使用积分
            UseMoney2Is = 2
        };

        // Act
        var result = await service.CalculateOrderMoneyAsync(1, request);

        // Assert
        Assert.NotNull(result);
        Assert.Equal("2000.00", result.UseIntegral); // 使用2000积分
        Assert.Equal("10.00", result.Price); // 30 - 20 = 10
    }

    /// <summary>
    /// 测试哈尼券抵扣 (1:100比例)
    /// Requirements: 1.4
    /// </summary>
    [Fact]
    public async Task CalculateOrderMoney_WithMoney2Deduction_DeductsCorrectly()
    {
        // Arrange
        var dbContext = CreateInMemoryDbContext();
        var service = CreateOrderService(dbContext);

        await CreateTestUserAsync(dbContext, money: 0, integral: 0, money2: 1500); // 1500哈尼券 = 15元
        await CreateTestGoodsAsync(dbContext, price: 10);
        await CreateTestGoodsItemsAsync(dbContext, 1);

        var request = new OrderMoneyRequest
        {
            GoodsId = 1,
            Num = 1,
            PrizeNum = 3,
            UseMoneyIs = 2,
            UseIntegralIs = 2,
            UseMoney2Is = 1 // 使用哈尼券
        };

        // Act
        var result = await service.CalculateOrderMoneyAsync(1, request);

        // Assert
        Assert.NotNull(result);
        Assert.Equal(1500.00m, result.UseMoney2); // 使用1500哈尼券
        Assert.Equal("15.00", result.Price); // 30 - 15 = 15
    }

    /// <summary>
    /// 测试组合抵扣 - 余额+积分+哈尼券
    /// Requirements: 1.2, 1.3, 1.4
    /// </summary>
    [Fact]
    public async Task CalculateOrderMoney_WithCombinedDeductions_DeductsCorrectly()
    {
        // Arrange
        var dbContext = CreateInMemoryDbContext();
        var service = CreateOrderService(dbContext);

        await CreateTestUserAsync(dbContext, money: 10, integral: 1000, money2: 500);
        await CreateTestGoodsAsync(dbContext, price: 10);
        await CreateTestGoodsItemsAsync(dbContext, 1);

        var request = new OrderMoneyRequest
        {
            GoodsId = 1,
            Num = 1,
            PrizeNum = 3, // 总价30元
            UseMoneyIs = 1,
            UseIntegralIs = 1,
            UseMoney2Is = 1
        };

        // Act
        var result = await service.CalculateOrderMoneyAsync(1, request);

        // Assert
        Assert.NotNull(result);
        // 余额10 + 积分10(1000/100) + 哈尼券5(500/100) = 25元抵扣
        // 30 - 25 = 5元
        Assert.Equal("10.00", result.UseMoney);
        Assert.Equal("1000.00", result.UseIntegral);
        Assert.Equal(500.00m, result.UseMoney2);
        Assert.Equal("5.00", result.Price);
    }

    /// <summary>
    /// 测试商品不存在时抛出异常
    /// Requirements: 1.1
    /// </summary>
    [Fact]
    public async Task CalculateOrderMoney_GoodsNotFound_ThrowsException()
    {
        // Arrange
        var dbContext = CreateInMemoryDbContext();
        var service = CreateOrderService(dbContext);

        await CreateTestUserAsync(dbContext);

        var request = new OrderMoneyRequest
        {
            GoodsId = 999,
            Num = 1,
            PrizeNum = 1
        };

        // Act & Assert
        var ex = await Assert.ThrowsAsync<InvalidOperationException>(
            () => service.CalculateOrderMoneyAsync(1, request));
        Assert.Equal("盒子不存在", ex.Message);
    }

    /// <summary>
    /// 测试商品已下架时抛出异常
    /// Requirements: 1.1
    /// </summary>
    [Fact]
    public async Task CalculateOrderMoney_GoodsOffline_ThrowsException()
    {
        // Arrange
        var dbContext = CreateInMemoryDbContext();
        var service = CreateOrderService(dbContext);

        await CreateTestUserAsync(dbContext);

        // 创建下架商品
        await dbContext.GoodsTypes.AddAsync(new GoodsType { Value = 1, Name = "一番赏", FlName = "一番赏", CornerText = "一番赏" });
        var goods = new Good
        {
            Id = 1,
            Title = "下架商品",
            Type = 1,
            Status = 0, // 下架
            Price = 10,
            Stock = 10,
            ImgUrl = "img.jpg",
            ImgUrlDetail = "detail.jpg"
        };
        await dbContext.Goods.AddAsync(goods);
        await dbContext.SaveChangesAsync();

        var request = new OrderMoneyRequest
        {
            GoodsId = 1,
            Num = 1,
            PrizeNum = 1
        };

        // Act & Assert
        var ex = await Assert.ThrowsAsync<InvalidOperationException>(
            () => service.CalculateOrderMoneyAsync(1, request));
        Assert.Equal("盒子已下架", ex.Message);
    }

    /// <summary>
    /// 测试用户不存在时抛出异常
    /// Requirements: 1.1
    /// </summary>
    [Fact]
    public async Task CalculateOrderMoney_UserNotFound_ThrowsException()
    {
        // Arrange
        var dbContext = CreateInMemoryDbContext();
        var service = CreateOrderService(dbContext);

        await CreateTestGoodsAsync(dbContext);

        var request = new OrderMoneyRequest
        {
            GoodsId = 1,
            Num = 1,
            PrizeNum = 1
        };

        // Act & Assert
        var ex = await Assert.ThrowsAsync<InvalidOperationException>(
            () => service.CalculateOrderMoneyAsync(999, request));
        Assert.Equal("用户不存在", ex.Message);
    }

    /// <summary>
    /// 测试全局限购验证
    /// Requirements: 1.6
    /// </summary>
    [Fact]
    public async Task CalculateOrderMoney_ExceedsGlobalLimit_ThrowsException()
    {
        // Arrange
        var dbContext = CreateInMemoryDbContext();
        var service = CreateOrderService(dbContext);

        await CreateTestUserAsync(dbContext);

        // 创建有全局限购的商品
        await dbContext.GoodsTypes.AddAsync(new GoodsType { Value = 1, Name = "一番赏", FlName = "一番赏", CornerText = "一番赏", PayWechat = 1, PayBalance = 1, IsDeduction = 1 });
        var goods = new Good
        {
            Id = 1,
            Title = "限购商品",
            Type = 1,
            Status = 1,
            Price = 10,
            Stock = 10,
            QuanjuXiangou = 2, // 全局限购2次
            ImgUrl = "img.jpg",
            ImgUrlDetail = "detail.jpg"
        };
        await dbContext.Goods.AddAsync(goods);
        await CreateTestGoodsItemsAsync(dbContext, 1);

        // 添加已购买记录
        var orderItems = new List<OrderItem>
        {
            new() { Id = 1, OrderId = 1, UserId = 1, GoodsId = 1, ShangId = 10, ParentGoodsListId = 0, Status = 0, Addtime = (int)DateTimeOffset.UtcNow.ToUnixTimeSeconds() },
            new() { Id = 2, OrderId = 1, UserId = 1, GoodsId = 1, ShangId = 10, ParentGoodsListId = 0, Status = 0, Addtime = (int)DateTimeOffset.UtcNow.ToUnixTimeSeconds() }
        };
        await dbContext.OrderItems.AddRangeAsync(orderItems);
        await dbContext.SaveChangesAsync();

        var request = new OrderMoneyRequest
        {
            GoodsId = 1,
            Num = 1,
            PrizeNum = 1
        };

        // Act & Assert
        var ex = await Assert.ThrowsAsync<InvalidOperationException>(
            () => service.CalculateOrderMoneyAsync(1, request));
        Assert.Contains("限购", ex.Message);
    }

    #endregion

    #region 订单创建测试 (Requirements 2.1-2.6)

    /// <summary>
    /// 测试订单创建 - 余额全额支付
    /// Requirements: 2.1, 2.2, 2.4
    /// Note: This test requires a real database due to transaction usage
    /// </summary>
    [Fact(Skip = "InMemory database does not support transactions")]
    public async Task CreateOrder_FullBalancePayment_CreatesOrderSuccessfully()
    {
        // Arrange
        var dbContext = CreateInMemoryDbContext();
        var service = CreateOrderService(dbContext);

        await CreateTestUserAsync(dbContext, money: 100);
        await CreateTestGoodsAsync(dbContext, price: 10);
        await CreateTestGoodsItemsAsync(dbContext, 1);

        var request = new OrderBuyRequest
        {
            GoodsId = 1,
            Num = 1,
            PrizeNum = 3, // 总价30元
            UseMoneyIs = 1, // 使用余额
            UseIntegralIs = 2,
            UseMoney2Is = 2
        };

        // Act
        var result = await service.CreateOrderAsync(1, request);

        // Assert
        Assert.NotNull(result);
        Assert.Equal(0, result.Status); // 已支付完成
        Assert.NotEmpty(result.OrderNum);
        Assert.Null(result.Res); // 无需微信支付

        // 验证订单已创建
        var order = await dbContext.Orders.FirstOrDefaultAsync(o => o.OrderNum == result.OrderNum);
        Assert.NotNull(order);
        Assert.Equal(1, order.Status); // 已支付
        Assert.Equal(30, order.OrderTotal);
        Assert.Equal(30, order.UseMoney);
        Assert.Equal(0, order.Price);
    }

    /// <summary>
    /// 测试订单创建 - 需要微信支付
    /// Requirements: 2.1, 2.2, 2.3
    /// Note: This test requires a real database due to transaction usage
    /// </summary>
    [Fact(Skip = "InMemory database does not support transactions")]
    public async Task CreateOrder_RequiresWechatPayment_ReturnsPayParams()
    {
        // Arrange
        var dbContext = CreateInMemoryDbContext();
        var service = CreateOrderService(dbContext);

        await CreateTestUserAsync(dbContext, money: 10); // 余额不足
        await CreateTestGoodsAsync(dbContext, price: 10);
        await CreateTestGoodsItemsAsync(dbContext, 1);

        var request = new OrderBuyRequest
        {
            GoodsId = 1,
            Num = 1,
            PrizeNum = 3, // 总价30元
            UseMoneyIs = 1, // 使用余额
            UseIntegralIs = 2,
            UseMoney2Is = 2
        };

        // Act
        var result = await service.CreateOrderAsync(1, request);

        // Assert
        Assert.NotNull(result);
        Assert.Equal(1, result.Status); // 需要支付
        Assert.NotEmpty(result.OrderNum);
        Assert.NotNull(result.Res); // 有微信支付参数

        // 验证订单已创建但未支付
        var order = await dbContext.Orders.FirstOrDefaultAsync(o => o.OrderNum == result.OrderNum);
        Assert.NotNull(order);
        Assert.Equal(0, order.Status); // 待支付
    }

    /// <summary>
    /// 测试订单创建 - 未绑定手机号
    /// Requirements: 2.6
    /// </summary>
    [Fact]
    public async Task CreateOrder_MobileNotBound_ThrowsException()
    {
        // Arrange
        var dbContext = CreateInMemoryDbContext();
        var service = CreateOrderService(dbContext);

        // 创建未绑定手机号的用户
        var user = new User
        {
            Id = 1,
            OpenId = "test_openid",
            Uid = "test_uid",
            Nickname = "测试用户",
            HeadImg = "avatar.jpg",
            Mobile = null, // 未绑定手机号
            Money = 100,
            Status = 1,
            CreatedAt = DateTime.Now,
            UpdatedAt = DateTime.Now
        };
        await dbContext.Users.AddAsync(user);
        await dbContext.SaveChangesAsync();

        await CreateTestGoodsAsync(dbContext, price: 10);
        await CreateTestGoodsItemsAsync(dbContext, 1);

        var request = new OrderBuyRequest
        {
            GoodsId = 1,
            Num = 1,
            PrizeNum = 1
        };

        // Act & Assert
        var ex = await Assert.ThrowsAsync<InvalidOperationException>(
            () => service.CreateOrderAsync(1, request));
        Assert.Equal("请先绑定手机号", ex.Message);
    }

    /// <summary>
    /// 测试订单创建 - 库存不足
    /// Requirements: 2.5
    /// </summary>
    [Fact]
    public async Task CreateOrder_InsufficientStock_ThrowsException()
    {
        // Arrange
        var dbContext = CreateInMemoryDbContext();
        var service = CreateOrderService(dbContext);

        await CreateTestUserAsync(dbContext, money: 100);
        await CreateTestGoodsAsync(dbContext, price: 10);

        // 创建库存不足的奖品
        await dbContext.PrizeLevels.AddAsync(new PrizeLevel { Id = 10, Title = "A赏" });
        await dbContext.GoodsItems.AddAsync(new GoodsItem
        {
            Id = 1,
            GoodsId = 1,
            Num = 1,
            Title = "A赏奖品",
            Stock = 5,
            SurplusStock = 2, // 只剩2个
            ShangId = 10,
            ImgUrl = "a.jpg"
        });
        await dbContext.SaveChangesAsync();

        var request = new OrderBuyRequest
        {
            GoodsId = 1,
            Num = 1,
            PrizeNum = 5 // 要买5个，但只有2个
        };

        // Act & Assert
        var ex = await Assert.ThrowsAsync<InvalidOperationException>(
            () => service.CreateOrderAsync(1, request));
        Assert.Contains("不足", ex.Message);
    }

    /// <summary>
    /// 测试订单创建 - 订单号唯一性
    /// Requirements: 2.2
    /// Note: This test requires a real database due to transaction usage
    /// </summary>
    [Fact(Skip = "InMemory database does not support transactions")]
    public async Task CreateOrder_GeneratesUniqueOrderNum()
    {
        // Arrange
        var dbContext = CreateInMemoryDbContext();
        var service = CreateOrderService(dbContext);

        await CreateTestUserAsync(dbContext, money: 100);
        await CreateTestGoodsAsync(dbContext, price: 10);
        await CreateTestGoodsItemsAsync(dbContext, 1);

        var request = new OrderBuyRequest
        {
            GoodsId = 1,
            Num = 1,
            PrizeNum = 1,
            UseMoneyIs = 1
        };

        // Act - 创建两个订单
        var result1 = await service.CreateOrderAsync(1, request);
        var result2 = await service.CreateOrderAsync(1, request);

        // Assert - 订单号应该不同
        Assert.NotEqual(result1.OrderNum, result2.OrderNum);
    }

    /// <summary>
    /// 测试订单创建 - 用户资产扣减
    /// Requirements: 2.4
    /// Note: This test requires a real database due to transaction usage
    /// </summary>
    [Fact(Skip = "InMemory database does not support transactions")]
    public async Task CreateOrder_DeductsUserAssets_Correctly()
    {
        // Arrange
        var dbContext = CreateInMemoryDbContext();
        var service = CreateOrderService(dbContext);

        await CreateTestUserAsync(dbContext, money: 50, integral: 1000, money2: 500);
        await CreateTestGoodsAsync(dbContext, price: 10);
        await CreateTestGoodsItemsAsync(dbContext, 1);

        var request = new OrderBuyRequest
        {
            GoodsId = 1,
            Num = 1,
            PrizeNum = 3, // 总价30元
            UseMoneyIs = 1,
            UseIntegralIs = 1,
            UseMoney2Is = 1
        };

        // Act
        var result = await service.CreateOrderAsync(1, request);

        // Assert
        Assert.Equal(0, result.Status); // 已支付完成

        // 验证用户资产已扣减
        var user = await dbContext.Users.FindAsync(1);
        Assert.NotNull(user);
        // 30元 = 余额30 或 余额+积分+哈尼券组合
        // 具体扣减取决于实现逻辑
        Assert.True(user.Money < 50 || user.Integral < 1000 || user.Money2 < 500);
    }

    #endregion

    #region 订单查询测试 (Requirements 6.1-6.4, 7.1-7.3)

    /// <summary>
    /// 测试订单列表查询 - 分页
    /// Requirements: 6.1, 6.3, 6.4
    /// </summary>
    [Fact]
    public async Task GetOrderList_Pagination_ReturnsCorrectPage()
    {
        // Arrange
        var dbContext = CreateInMemoryDbContext();
        var service = CreateOrderService(dbContext);

        await CreateTestUserAsync(dbContext);

        // 创建15个订单
        var orders = Enumerable.Range(1, 15).Select(i => new Order
        {
            Id = i,
            UserId = 1,
            OrderNum = $"MH_YFS{DateTime.Now:yyyyMMddHHmmss}{i:0000}",
            OrderTotal = 10 * i,
            OrderZheTotal = 10 * i,
            Price = 0,
            UseMoney = 10 * i,
            GoodsId = 1,
            GoodsTitle = $"商品{i}",
            GoodsImgurl = $"img{i}.jpg",
            PrizeNum = i,
            Status = 1, // 已支付
            Addtime = (int)DateTimeOffset.UtcNow.ToUnixTimeSeconds() - i * 60,
            CreatedAt = DateTime.Now,
            UpdatedAt = DateTime.Now
        }).ToList();
        await dbContext.Orders.AddRangeAsync(orders);
        await dbContext.SaveChangesAsync();

        // Act - 第一页
        var page1 = await service.GetOrderListAsync(1, new OrderListRequest { Page = 1, PageSize = 10 });

        // Act - 第二页
        var page2 = await service.GetOrderListAsync(1, new OrderListRequest { Page = 2, PageSize = 10 });

        // Assert
        Assert.Equal(15, page1.Total);
        Assert.Equal(2, page1.LastPage);
        Assert.Equal(10, page1.Data.Count);
        Assert.Equal(5, page2.Data.Count);
    }

    /// <summary>
    /// 测试订单详情查询
    /// Requirements: 7.1, 7.2
    /// </summary>
    [Fact]
    public async Task GetOrderDetail_ReturnsCompleteInfo()
    {
        // Arrange
        var dbContext = CreateInMemoryDbContext();
        var service = CreateOrderService(dbContext);

        await CreateTestUserAsync(dbContext);

        var orderNum = "MH_YFS202501021234561234";
        var order = new Order
        {
            Id = 1,
            UserId = 1,
            OrderNum = orderNum,
            OrderTotal = 30,
            OrderZheTotal = 30,
            Price = 0,
            UseMoney = 30,
            GoodsId = 1,
            GoodsPrice = 10,
            GoodsTitle = "测试商品",
            GoodsImgurl = "img.jpg",
            PrizeNum = 3,
            Status = 1,
            Addtime = (int)DateTimeOffset.UtcNow.ToUnixTimeSeconds(),
            PayTime = (int)DateTimeOffset.UtcNow.ToUnixTimeSeconds(),
            CreatedAt = DateTime.Now,
            UpdatedAt = DateTime.Now
        };
        await dbContext.Orders.AddAsync(order);

        // 添加奖品记录
        var orderItems = new List<OrderItem>
        {
            new() { Id = 1, OrderId = 1, UserId = 1, GoodsId = 1, ShangId = 10, GoodslistTitle = "A赏奖品", GoodslistImgurl = "a.jpg", GoodslistPrice = 100, GoodslistMoney = 50, Status = 0, LuckNo = 1, Addtime = (int)DateTimeOffset.UtcNow.ToUnixTimeSeconds() },
            new() { Id = 2, OrderId = 1, UserId = 1, GoodsId = 1, ShangId = 11, GoodslistTitle = "B赏奖品", GoodslistImgurl = "b.jpg", GoodslistPrice = 50, GoodslistMoney = 25, Status = 0, LuckNo = 2, Addtime = (int)DateTimeOffset.UtcNow.ToUnixTimeSeconds() }
        };
        await dbContext.OrderItems.AddRangeAsync(orderItems);
        await dbContext.SaveChangesAsync();

        // Act
        var result = await service.GetOrderDetailAsync(1, orderNum);

        // Assert
        Assert.NotNull(result);
        Assert.NotNull(result.OrderInfo);
        Assert.Equal(orderNum, result.OrderInfo.OrderNum);
        Assert.Equal("30.00", result.OrderInfo.OrderTotal);
        Assert.NotNull(result.PrizeList);
        Assert.Equal(2, result.PrizeList.Count);
    }

    /// <summary>
    /// 测试订单详情查询 - 订单不存在
    /// Requirements: 7.3
    /// </summary>
    [Fact]
    public async Task GetOrderDetail_OrderNotFound_ThrowsException()
    {
        // Arrange
        var dbContext = CreateInMemoryDbContext();
        var service = CreateOrderService(dbContext);

        await CreateTestUserAsync(dbContext);

        // Act & Assert
        var ex = await Assert.ThrowsAsync<InvalidOperationException>(
            () => service.GetOrderDetailAsync(1, "NONEXISTENT_ORDER"));
        Assert.Equal("订单不存在", ex.Message);
    }

    #endregion
}