using System.Net;
using System.Net.Http.Headers;
using System.Net.Http.Json;
using CampusErrand.Data;
using CampusErrand.Models;
using CampusErrand.Models.Dtos;
using FsCheck;
using FsCheck.Xunit;
using Microsoft.AspNetCore.Mvc.Testing;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;

namespace CampusErrand.Tests;

/// <summary>
/// Property 11: 接单状态转换
/// 对任意处于待接单状态的订单，当跑腿接取后，订单状态应变为"进行中"，
/// 且 RunnerId 应被设置为接单跑腿的用户 ID。
/// **Feature: login-and-homepage, Property 11: 接单状态转换**
///
/// </summary>
public class AcceptOrderPropertyTests : IDisposable
{
    private const string JwtSecret = "YourSuperSecretKeyForJwtTokenGeneration_AtLeast32Chars!";
    private const string JwtIssuer = "CampusErrand";
    private const string JwtAudience = "CampusErrandApp";

    private readonly List<WebApplicationFactory<Program>> _factories = [];

    private WebApplicationFactory<Program> CreateFactory(string dbName)
    {
        var factory = new WebApplicationFactory<Program>()
            .WithWebHostBuilder(builder =>
            {
                builder.ConfigureServices(services =>
                {
                    var efDescriptors = services
                        .Where(d =>
                            d.ServiceType.FullName?.Contains("EntityFrameworkCore") == true
                            || d.ServiceType == typeof(DbContextOptions<AppDbContext>)
                            || d.ServiceType == typeof(DbContextOptions)
                            || d.ImplementationType?.FullName?.Contains("EntityFrameworkCore") == true)
                        .ToList();
                    foreach (var d in efDescriptors) services.Remove(d);

                    services.AddDbContext<AppDbContext>(options =>
                        options.UseInMemoryDatabase(dbName));
                });
            });
        _factories.Add(factory);
        return factory;
    }

    private static string GenerateUserToken(int userId)
    {
        var key = new Microsoft.IdentityModel.Tokens.SymmetricSecurityKey(
            System.Text.Encoding.UTF8.GetBytes(JwtSecret));
        var credentials = new Microsoft.IdentityModel.Tokens.SigningCredentials(
            key, Microsoft.IdentityModel.Tokens.SecurityAlgorithms.HmacSha256);
        var claims = new[]
        {
            new System.Security.Claims.Claim(System.Security.Claims.ClaimTypes.NameIdentifier, userId.ToString()),
            new System.Security.Claims.Claim(System.Security.Claims.ClaimTypes.Role, "Runner")
        };
        var token = new System.IdentityModel.Tokens.Jwt.JwtSecurityToken(
            issuer: JwtIssuer, audience: JwtAudience, claims: claims,
            expires: DateTime.UtcNow.AddHours(1), signingCredentials: credentials);
        return new System.IdentityModel.Tokens.Jwt.JwtSecurityTokenHandler().WriteToken(token);
    }

    /// <summary>
    /// 属性：接单后订单状态变为 InProgress，RunnerId 被正确设置
    /// </summary>
    [Property(MaxTest = 20)]
    public bool 接单后状态变为进行中且RunnerId正确(PositiveInt seed)
    {
        var dbName = $"accept_{Guid.NewGuid()}";
        using var factory = CreateFactory(dbName);

        var runnerId = 10 + (seed.Get % 90); // 跑腿用户 ID
        var ownerId = runnerId + 100; // 确保单主和跑腿不同
        int orderId;

        // 准备数据：创建 Pending 订单、跑腿用户和认证记录
        using (var scope = factory.Services.CreateScope())
        {
            var db = scope.ServiceProvider.GetRequiredService<AppDbContext>();

            // 创建单主用户
            db.Users.Add(new User
            {
                Id = ownerId,
                OpenId = $"owner_{ownerId}",
                Phone = "13900000001",
                Nickname = "单主",
                CreatedAt = DateTime.UtcNow
            });

            // 创建跑腿用户（已认证、未封禁）
            db.Users.Add(new User
            {
                Id = runnerId,
                OpenId = $"runner_{runnerId}",
                Phone = "13900000002",
                Nickname = "跑腿",
                Role = UserRole.Runner,
                IsBanned = false,
                CreatedAt = DateTime.UtcNow
            });

            // 创建跑腿认证记录
            db.RunnerCertifications.Add(new RunnerCertification
            {
                UserId = runnerId,
                RealName = "测试跑腿",
                Phone = "13900000002",
                Status = CertificationStatus.Approved,
                CreatedAt = DateTime.UtcNow
            });

            // 创建待接单订单
            var commission = Math.Round(1.0m + (seed.Get % 490) * 0.1m, 1);
            var order = new Order
            {
                OrderNo = $"ORD{Guid.NewGuid():N}"[..20],
                OwnerId = ownerId,
                OrderType = OrderType.Pickup,
                Status = OrderStatus.Pending,
                ItemName = "测试物品",
                DeliveryLocation = "测试地点",
                Phone = "13800138000",
                Commission = commission,
                TotalAmount = commission,
                CreatedAt = DateTime.UtcNow
            };
            db.Orders.Add(order);
            db.SaveChanges();
            orderId = order.Id;
        }

        // 调用接单接口
        var client = factory.CreateClient();
        client.DefaultRequestHeaders.Authorization =
            new AuthenticationHeaderValue("Bearer", GenerateUserToken(runnerId));

        var response = client.PostAsync($"/api/orders/{orderId}/accept", null).Result;
        if (response.StatusCode != HttpStatusCode.OK) return false;

        var result = response.Content.ReadFromJsonAsync<AcceptOrderResponse>().Result!;

        // 验证：状态变为 InProgress
        if (result.Status != "InProgress") return false;

        // 验证：RunnerId 被正确设置
        if (result.RunnerId != runnerId) return false;

        // 验证：AcceptedAt 已设置
        if (result.AcceptedAt == default) return false;

        return true;
    }

    public void Dispose()
    {
        foreach (var f in _factories) f.Dispose();
        _factories.Clear();
    }
}