using System;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Serilog;
using YunDa.Server.ISMSTcp.Extensions;
using YunDa.Server.ISMSTcp.Services;

namespace YunDa.Server.ISMSTcp
{

    /// <summary>
    /// 程序入口点
    /// </summary>
    public class Program
    {
        /// <summary>
        /// 主入口方法
        /// </summary>
        /// <param name="args">命令行参数</param>
        /// <returns>退出代码</returns>
        public static async Task<int> Main(string[] args)
        {
            // 创建最小日志记录器用于启动阶段
            Log.Logger = new LoggerConfiguration()
                .MinimumLevel.Information()
                .WriteTo.Console(outputTemplate: "[{Timestamp:HH:mm:ss} {Level:u3}] {Message:lj}{NewLine}{Exception}")
                .CreateLogger();

            try
            {
                var environment = Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT") ?? "Production";
                Log.Information("启动 YunDa ISMS TCP Gateway 应用程序 - 环境: {Environment}", environment);

                // 创建主机构建器
                var host = CreateHostBuilder(args).Build();

                // 运行应用程序
                await host.RunAsync();

                Log.Information("YunDa ISMS TCP Gateway 应用程序正常停止");
                return 0;
            }
            catch (Exception ex)
            {
                Log.Fatal(ex, "YunDa ISMS TCP Gateway 应用程序异常终止");
                return 1;
            }
            finally
            {
                // 确保所有日志都被写入
                await Log.CloseAndFlushAsync();
            }
        }

        /// <summary>
        /// 创建主机构建器
        /// </summary>
        /// <param name="args">命令行参数</param>
        /// <returns>主机构建器</returns>
        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseStartup<Startup>();
                    webBuilder.ConfigureKestrel(options =>
                    {
                        // 从配置中读取端口
                        var config = new ConfigurationBuilder()
                            .AddJsonFile("appsettings.json")
                            .Build();
                        var port = config.GetValue<int>("WebApi:Port", 56670);
                        options.ListenAnyIP(port);
                    });
                })
                .ConfigureAppConfiguration((context, config) =>
                {
                    config.AddJsonFile("appsettings.json", optional: false, reloadOnChange: true);
                    config.AddJsonFile($"appsettings.{context.HostingEnvironment.EnvironmentName}.json",
                        optional: true, reloadOnChange: true);
                    config.AddEnvironmentVariables();
                    config.AddCommandLine(args);
                })
                .ConfigureServices((context, services) =>
                {
                    // 添加日志服务
                    services.AddLoggingServices(context.Configuration);

                    // 添加ISMS服务
                    services.AddISMSServices(context.Configuration);

                    // 添加主机服务（ConsoleInterface 已在 AddISMSServices 中注册）
                    services.AddHostedService<ConsoleInterface>();

                    // 注册 WebApi 配置类
                    services.Configure<WebApiSettings>(context.Configuration.GetSection("WebApi"));

                    // 注册 ThingApiService配置
                    services.Configure<ThingApiServiceSettings>(context.Configuration.GetSection("ThingApiService"));
                })
                .UseSerilog()
                .UseConsoleLifetime();
    }
}