using Microsoft.Extensions.DependencyInjection;
using System.Reflection;

namespace Ds.Module.AppStartup
{
    /// <summary>
    ///
    /// </summary>
    [AttributeUsage(AttributeTargets.Class)]
    public class Ds_StartupAttribute : Attribute
    { }

    public interface IDs_App_Startup
    {
        void ConfigureServices(IServiceCollection services);

        void Configure(object app);
    }

    /// <summary>
    ///
    /// </summary>
    public static class Ds_App_Startup
    {
        public static void Run()
        {
            try
            {
                var startupTypes = Assembly.GetCallingAssembly().GetTypes()
                    .Where(type => type.GetCustomAttribute<Ds_StartupAttribute>() != null);

                var services = new ServiceCollection();

                foreach (var startupType in startupTypes)
                {
                    var startupInstance = Activator.CreateInstance(startupType) as IDs_App_Startup;
                    startupInstance?.ConfigureServices(services);
                }

                // 构建 IServiceProvider

                var serviceProvider = services.BuildServiceProvider();

                foreach (var startupType in startupTypes)
                {
                    var startupInstance = Activator.CreateInstance(startupType);
                    var configureMethod = startupType.GetMethod("Configure");

                    if (configureMethod != null)
                    {
                        configureMethod.Invoke(startupInstance, new[] { serviceProvider });
                    }
                }
            }
            catch (Exception ex)
            {
                // 友好的错误消息和日志记录
                Console.WriteLine($"An error occurred: {ex.Message}");
                // 日志记录
                // Logger.LogError(ex, "An error occurred during startup.");
            }
        }
    }

    //// 示例启动类
    //[MyFrameworkStartup]
    //public class MyFrameworkStartup : IMyFrameworkStartup
    //{
    //    public void ConfigureServices(IServiceCollection services)
    //    {
    //        // 配置服务
    //        services.AddTransient<IMyService, MyService>();
    //        // 其他服务配置...
    //    }

    //    public void Configure(object app)
    //    {
    //        // 配置中间件
    //        // 其他中间件配置...
    //    }
    //}

    // 示例服务
    //public interface IMyService
    //{
    //    void DoSomething();
    //}

    //public class MyService : IMyService
    //{
    //    public void DoSomething()
    //    {
    //        Console.WriteLine("Doing something...");
    //    }
    //}

    //internal class Program
    //{
    //    private static void Main()
    //    {
    //        MyFramework.Run();
    //    }
    //}
}