using System;
using System.Diagnostics;
using System.Threading;
using ivf_tl_Control;                 // AppData, StartMain
using IvfTl.Control.Services;         // Log4netHelper(程序集 ivf_tl_Control_Services;切勿写 operate 端 ivf_tl_Services)

namespace IvfTl.ControlHost
{
    public static class Program
    {
        private static Mutex _singleton;
        private static ControlHttpServer _http;
        private static volatile bool _started;
        private static ManualResetEventSlim _exitEvent;

        [STAThread]
        public static int Main(string[] args)
        {
            // 1) 单实例:已有 control 在跑则立即退出(永远只有一个驱动机器)。
            bool isNew;
            _singleton = new Mutex(true, @"Global\ivf_tl_control_singleton", out isNew);
            if (!isNew)
            {
                Log4netHelper.WriteLog("ControlHost: 已有实例在运行,本进程退出");
                return 0;
            }

            try
            {
                var hostArgs = HostArgs.Parse(args);
                Log4netHelper.WriteLog($"ControlHost 启动 port={hostArgs.Port} account={hostArgs.Account}");

                // 2) 先起 HTTP(让 operate 能尽早探到"在启动中"),started=false。
                _http = new ControlHttpServer(
                    hostArgs.Port,
                    BuildStatus,
                    msg => Log4netHelper.WriteLog(msg));
                _http.Start();

                // 3) 账号守卫(对齐 operate 空账号跳过逻辑)。
                if (!hostArgs.IsValid)
                {
                    Log4netHelper.WriteLog("ControlHost: 账号/密码为空,不启动采集(仅 HTTP 存活)");
                }
                else
                {
                    // 4) 复刻 operate MainWindow 启动序(顺序不可变)。
                    if (!AppData.Instance.Login(hostArgs.Account, hostArgs.Password))
                    {
                        Log4netHelper.WriteLog("ControlHost: control 登录失败");
                    }
                    else
                    {
                        if (!string.IsNullOrEmpty(hostArgs.CacheDisk))
                        {
                            ivf_tl_UtilHelper.PathHelper.pan = hostArgs.CacheDisk;
                            AppData.Instance.LogService.Pan = hostArgs.CacheDisk;
                        }
                        try
                        {
                            IvfTl.Hardware.Impl.HardwareAccessLayer.Instance.Log =
                                msg => Log4netHelper.WriteLog(msg);
                            var devices = IvfTl.Hardware.Impl.HardwareAccessLayer.Instance.ScanDevices();
                            Log4netHelper.WriteLog($"ControlHost: HAL 发现 {devices.Count} 个舱");
                        }
                        catch (Exception hex)
                        {
                            Log4netHelper.WriteLog("ControlHost: HAL 发现异常(降级):" + hex.Message);
                        }

                        var startMain = new StartMain();
                        string err = startMain.StartRun(); // 阻塞:InitTL→InitHouse→StartAsync
                        if (!string.IsNullOrEmpty(err))
                            Log4netHelper.WriteLog("ControlHost: control 启动失败:" + err);
                        else
                        {
                            _started = true;
                            Log4netHelper.WriteLog("ControlHost: control 启动成功,常驻运行");
                        }
                    }
                }

                // 5) 驻留:control 后台线程已起(LongRunning),主线程阻塞等退出信号。
                _exitEvent = new ManualResetEventSlim(false);
                _exitEvent.Wait();
                return 0;
            }
            catch (Exception ex)
            {
                Log4netHelper.WriteLog("ControlHost 致命异常", ex);
                return 1;
            }
            finally
            {
                try { _http?.Stop(); } catch { }
                try { _singleton?.ReleaseMutex(); } catch { }
            }
        }

        /// <summary>提供给 HTTP /status 的快照(阶段1:基础存活;阶段2 接 GetMonitorSnapshot 补全)。</summary>
        private static StatusDto BuildStatus()
        {
            string tlSn = "";
            try { tlSn = AppData.Instance.TLSetting?.tlSn ?? ""; } catch { }
            return new StatusDto
            {
                Ok = true,
                Pid = Process.GetCurrentProcess().Id,
                TlSn = tlSn,
                Started = _started
            };
        }
    }
}