using AmtScanner.Api.Configuration;
using AmtScanner.Api.Data;
using AmtScanner.Api.Middleware;
using AmtScanner.Api.Services;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.EntityFrameworkCore;
using Microsoft.IdentityModel.Tokens;
using System.Text;

var builder = WebApplication.CreateBuilder(args);

// 监听所有 IP 地址，允许外部访问
builder.WebHost.UseUrls("http://0.0.0.0:5000");

// Add services to the container
builder.Services.AddControllers();
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();

// Add CORS
builder.Services.AddCors(options =>
{
    options.AddPolicy("AllowFrontend", policy =>
    {
        policy.WithOrigins("http://localhost:5173", "http://localhost:3000", "http://localhost:3001", "http://localhost:3006", "http://localhost:3007")
              .AllowAnyHeader()
              .AllowAnyMethod()
              .AllowCredentials();
    });
});

// Add Database
var databaseProvider = builder.Configuration.GetValue<string>("DatabaseProvider", "SQLite");

if (databaseProvider == "MySQL")
{
    var connectionString = builder.Configuration.GetConnectionString("MySqlConnection");
    builder.Services.AddDbContext<AppDbContext>(options =>
        options.UseMySql(connectionString, ServerVersion.AutoDetect(connectionString)));
}
else
{
    builder.Services.AddDbContext<AppDbContext>(options =>
        options.UseSqlite(builder.Configuration.GetConnectionString("DefaultConnection")));
}

// Add JWT Configuration
builder.Services.Configure<JwtSettings>(builder.Configuration.GetSection(JwtSettings.SectionName));
builder.Services.AddScoped<IJwtService, JwtService>();
builder.Services.AddScoped<IAuthService, AuthService>();
builder.Services.AddScoped<IMenuService, MenuService>();

// Add AMT Services
builder.Services.AddSingleton<IAmtScanService, AmtScanService>();
builder.Services.AddScoped<IAmtWsmanService, AmtWsmanService>();
builder.Services.AddScoped<IAmtNetworkService, AmtNetworkService>();
builder.Services.AddScoped<IAmtPowerService, AmtPowerService>();

// Add Screen Stream Proxy Service
builder.Services.AddSingleton<ScreenStreamProxyService>();

// Add Guacamole Service
builder.Services.AddHttpClient("Guacamole");
builder.Services.AddSingleton<GuacamoleService>();

// Add JWT Authentication
var jwtSettings = builder.Configuration.GetSection(JwtSettings.SectionName).Get<JwtSettings>()!;
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 = jwtSettings.Issuer,
        ValidAudience = jwtSettings.Audience,
        IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(jwtSettings.SecretKey)),
        ClockSkew = TimeSpan.Zero
    };
    
    options.Events = new JwtBearerEvents
    {
        OnAuthenticationFailed = context =>
        {
            if (context.Exception.GetType() == typeof(SecurityTokenExpiredException))
            {
                context.Response.Headers.Append("Token-Expired", "true");
            }
            return Task.CompletedTask;
        }
    };
});

var app = builder.Build();

// Configure the HTTP request pipeline
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseCors("AllowFrontend");

// Add WebSocket support
app.UseWebSockets(new WebSocketOptions
{
    KeepAliveInterval = TimeSpan.FromSeconds(30)
});

// Add global exception handler
app.UseGlobalExceptionHandler();

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

app.MapControllers();

// Ensure database is created
using (var scope = app.Services.CreateScope())
{
    var db = scope.ServiceProvider.GetRequiredService<AppDbContext>();
    
    try
    {
        // Apply migrations
        try
        {
            db.Database.Migrate();
        }
        catch (Exception migrationEx) when (migrationEx.Message.Contains("already exists"))
        {
            Console.WriteLine("⚠️ 表已存在，尝试标记迁移为已完成...");
            var pendingMigrations = db.Database.GetPendingMigrations().ToList();
            foreach (var migration in pendingMigrations)
            {
                try
                {
                    db.Database.ExecuteSqlRaw(
                        "INSERT IGNORE INTO `__EFMigrationsHistory` (`MigrationId`, `ProductVersion`) VALUES ({0}, {1})",
                        migration, "8.0.0");
                    Console.WriteLine($"✅ 已标记迁移: {migration}");
                }
                catch { }
            }
        }
        
        Console.WriteLine($"✅ 数据库连接成功: {databaseProvider}");
        
        // 确保 AgentDevices_new 表存在
        try
        {
            db.Database.ExecuteSqlRaw(@"
                CREATE TABLE IF NOT EXISTS `AgentDevices_new` (
                    `Uuid` VARCHAR(36) NOT NULL PRIMARY KEY,
                    `Hostname` VARCHAR(100) DEFAULT '',
                    `IpAddress` VARCHAR(45) DEFAULT '',
                    `MacAddress` VARCHAR(17) DEFAULT '',
                    `SubnetMask` VARCHAR(15) DEFAULT '',
                    `Gateway` VARCHAR(45) DEFAULT '',
                    `OsName` VARCHAR(200) DEFAULT '',
                    `OsVersion` VARCHAR(100) DEFAULT '',
                    `OsArchitecture` VARCHAR(20) DEFAULT '',
                    `CpuName` VARCHAR(200) DEFAULT '',
                    `TotalMemoryMB` BIGINT DEFAULT 0,
                    `Manufacturer` VARCHAR(100) DEFAULT '',
                    `Model` VARCHAR(100) DEFAULT '',
                    `SerialNumber` VARCHAR(100) DEFAULT '',
                    `CurrentUser` VARCHAR(100) DEFAULT '',
                    `UserDomain` VARCHAR(100) DEFAULT '',
                    `BootTime` DATETIME NULL,
                    `LastReportAt` DATETIME NULL,
                    `IsOnline` TINYINT(1) DEFAULT 0,
                    `CreatedAt` DATETIME NOT NULL,
                    INDEX `IX_AgentDevices_new_IpAddress` (`IpAddress`)
                ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
            ");
            Console.WriteLine("✅ AgentDevices_new 表已就绪");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"⚠️ 创建 AgentDevices_new 表: {ex.Message}");
        }
        
        // 初始化种子数据
        await DbSeeder.SeedAsync(db);
    }
    catch (Exception ex)
    {
        Console.WriteLine($"❌ 数据库初始化失败: {ex.Message}");
        throw;
    }
}

app.Run();