using System.Text;
using CampusErrand.Data;
using CampusErrand.Models;
using CampusErrand.Services;
using CampusErrand.Endpoints;
using CampusErrand.Helpers;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.EntityFrameworkCore;
using Microsoft.IdentityModel.Tokens;

var builder = WebApplication.CreateBuilder(args);

// 数据库配置
var connectionString = builder.Configuration.GetConnectionString("DefaultConnection")!;
builder.Services.AddDbContext<AppDbContext>(options =>
    options.UseSqlServer(connectionString));

// Redis 分布式缓存配置
builder.Services.AddStackExchangeRedisCache(options =>
{
    options.Configuration = builder.Configuration["Redis:Configuration"];
    options.InstanceName = "CampusErrand:";
});

// JWT 认证配置
var jwtConfig = builder.Configuration.GetSection("Jwt");
var secretKey = Encoding.UTF8.GetBytes(jwtConfig["Secret"]!);

builder.Services.AddAuthentication(options =>
{
    options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
    options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
})
.AddJwtBearer(options =>
{
    options.TokenValidationParameters = new TokenValidationParameters
    {
        ValidateIssuer = true,
        ValidateAudience = true,
        ValidateLifetime = true,
        ValidateIssuerSigningKey = true,
        ValidIssuer = jwtConfig["Issuer"],
        ValidAudience = jwtConfig["Audience"],
        IssuerSigningKey = new SymmetricSecurityKey(secretKey),
        ClockSkew = TimeSpan.Zero
    };
});

// 角色授权策略
builder.Services.AddAuthorizationBuilder()
    .AddPolicy("AdminOnly", policy => policy.RequireRole("Admin"))
    .AddPolicy("UserOrAdmin", policy => policy.RequireRole("User", "Runner", "Admin"));

// CORS 配置
builder.Services.AddCors(options =>
{
    options.AddDefaultPolicy(policy =>
    {
        policy.AllowAnyOrigin()
              .AllowAnyMethod()
              .AllowAnyHeader();
    });
});

// 注册 JWT 服务
builder.Services.AddSingleton<JwtService>();

// 注册微信服务
builder.Services.AddHttpClient<IWeChatService, WeChatService>();

// 注册腾讯 IM 服务
builder.Services.AddHttpClient();
builder.Services.AddSingleton<TencentIMService>();

// 注册微信支付服务
builder.Services.AddHttpClient<WxPayService>();

// OpenAPI 文档（.NET 10 内置）
builder.Services.AddOpenApi();

var app = builder.Build();

// 中间件管道
if (app.Environment.IsDevelopment())
{
    app.MapOpenApi();
    // Swagger UI 用于可视化调试
    app.UseSwaggerUI(options =>
    {
        options.SwaggerEndpoint("/openapi/v1.json", "校园跑腿 API v1");
    });
}

app.UseCors();
app.UseAuthentication();
app.UseAuthorization();

// 注册各模块端点
app.MapAuthEndpoints();
app.MapIMEndpoints();
app.MapBannerEndpoints();
app.MapServiceEntryEndpoints();
app.MapOrderEndpoints();
app.MapShopEndpoints();
app.MapEarningEndpoints();
app.MapMessageEndpoints();
app.MapAdminEndpoints();
app.MapConfigEndpoints();
app.MapRunnerEndpoints();

// 自动执行数据库迁移（仅关系型数据库，跳过 InMemory 测试环境）
using (var scope = app.Services.CreateScope())
{
    var db = scope.ServiceProvider.GetRequiredService<AppDbContext>();
    if (db.Database.IsRelational() && !(db.Database.ProviderName?.Contains("InMemory") ?? false))
    {
        db.Database.Migrate();
    }

    // 初始化默认佣金规则（如果为空）
    if (!db.CommissionRules.Any())
    {
        db.CommissionRules.Add(new CommissionRule
        {
            MinAmount = 0m,
            MaxAmount = null,
            RateType = CommissionRateType.Percentage,
            Rate = 10m  // 默认抽成 10%
        });
        db.SaveChanges();
        Console.WriteLine("[初始化] 已创建默认佣金规则：10% 抽成");
    }
}

// 注册后台定时任务：每10分钟执行一次自动确认和解冻
_ = Task.Run(async () =>
{
    while (true)
    {
        await Task.Delay(TimeSpan.FromMinutes(10));
        try
        {
            using var scope = app.Services.CreateScope();
            var db = scope.ServiceProvider.GetRequiredService<AppDbContext>();
            await BusinessHelpers.AutoConfirmExpiredOrders(db);
            await BusinessHelpers.UnfreezeEarnings(db);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"[定时任务] 执行失败: {ex.Message}");
        }
    }
});

app.Run();

// 用于集成测试访问
public partial class Program { }