using Authentication;
using Avalonia;
using Avalonia_Common.Infrastructure;
using Avalonia_EFCore.Database;
using Avalonia_PC.Authentication;
using Avalonia_PC.Views;
using Avalonia_Services.Core;
using Avalonia_Services.Endpoints;
using Avalonia_Services.Services;
using Avalonia_Services.Services.AuthService;
using Microsoft.Extensions.DependencyInjection;
using Serilog;
using System;

namespace Avalonia_PC
{
    /// <summary>
    /// 桌面应用程序入口类，负责配置 DI 容器、初始化数据库和启动 Avalonia 框架。
    /// </summary>
    internal sealed class Program
    {
        /// <summary>
        /// 获取全局 DI 服务提供程序。
        /// </summary>
        public static IServiceProvider Services { get; private set; } = null!;

        /// <summary>
        /// 应用程序主入口点。
        /// </summary>
        /// <param name="args">命令行参数。</param>
        [STAThread]
        public static void Main(string[] args)
        {
            // 初始化日志系统
            AppLog.Initialize(LoggingConfiguration.CreateDefaultLogger(logDir: "logs"));

            AppLog.Information("Avalonia-PC 正在启动...");

            ConfigureServices();

            // 初始化数据库（自动迁移 + 种子数据）
            Services.InitializeDatabase<AppDataContext>();

#if DEBUG
            // 开启 WebView2 远程调试，启动后在 Edge 中访问 edge://inspect 调试网页
            Environment.SetEnvironmentVariable(
                "WEBVIEW2_ADDITIONAL_BROWSER_ARGUMENTS",
                "--remote-debugging-port=9222 --auto-open-devtools-for-tabs");
#endif
            BuildAvaloniaApp().StartWithClassicDesktopLifetime(args);
        }

        /// <summary>
        /// 配置 DI 容器，注册数据库、业务服务、鉴权服务和统一端点。
        /// </summary>
        private static void ConfigureServices()
        {
            var services = new ServiceCollection();

            // ---- 数据库 ----
            // 注册默认数据库提供程序（SQLite / MySQL / PostgreSQL / SqlServer）
            DatabaseProviderRegistry.RegisterDefaults();

            // 桌面端固定使用 SQLite 本地数据库
            services.AddAppDatabase<AppDataContext>(DatabaseConfiguration.ForSQLite("app.db"));

            // ---- 业务服务 ----
            services.AddSingleton<WeatherForecastService>();
            services.AddSingleton<IPcThirdPartyAuthorizationClient, DefaultPcThirdPartyAuthorizationClient>();
            services.AddSingleton<PcGlobalTokenService>();
            services.AddSingleton<IAuthService, PcAuthService>();
            services.AddSingleton<IPcAuthEndpointService, PcAuthEndpointService>();

            // ---- 端点注册 ----
            var endpointBuilder = new ServiceEndpointBuilder();
            AppEndpoints.Configure(endpointBuilder);
            AuthEndpoints.ConfigurePc(endpointBuilder);
            var endpoints = endpointBuilder.Build();
            services.AddSingleton(endpoints);

            // 注册 Window
            services.AddTransient<MainWindow>(sp => new MainWindow(sp));

            Services = services.BuildServiceProvider();
        }

        /// <summary>
        /// 构建 Avalonia 应用程序（供可视化设计器使用，请勿删除）。
        /// </summary>
        /// <returns>Avalonia 应用构建器。</returns>
        public static AppBuilder BuildAvaloniaApp()
            => AppBuilder.Configure<App>()
                .UsePlatformDetect()
                .WithInterFont()
                .LogToTrace();
    }
}