using JinYuan.Helper;
using JinYuan.VirtualDataLibrary;
using System;
using System.Configuration;
using System.Diagnostics;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Threading;
using System.Windows.Forms;

namespace LargeSquareOne
{
    internal static class Program
    {
        #region 调用系统API

        [DllImport("User32.dll")]
        private static extern bool ShowWindowAsync(IntPtr hWnd, int cmdShow);

        [DllImport("User32.dll")]
        private static extern bool SetForegroundWindow(IntPtr hWnd);

        private const int SW_MAXIMIZE = 3;

        #endregion 调用系统API

        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main()
        {
            var stopwatch = Stopwatch.StartNew();
            // 添加全局异常处理
            Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);
            Application.ThreadException += (sender, e) =>
            {
                Debug.WriteLine($"[UI线程异常] {e.Exception.Message}");
                Debug.WriteLine($"[堆栈] {e.Exception.StackTrace}");

                // 检查是否是Max()异常
                if (e.Exception is InvalidOperationException &&
                    e.Exception.Message.Contains("Sequence contains no elements") &&
                    e.Exception.StackTrace.Contains("Enumerable.Max"))
                {
                    Debug.WriteLine("[诊断] 找到LINQ Max()空集合异常！");

                    // 输出调用堆栈中的方法名
                    var stackTrace = new System.Diagnostics.StackTrace(e.Exception, true);
                    var frames = stackTrace.GetFrames();
                    if (frames != null)
                    {
                        foreach (var frame in frames.Take(5))  // 前5帧
                        {
                            var method = frame.GetMethod();
                            Debug.WriteLine($"[调用链] {method.DeclaringType?.FullName}.{method.Name}");
                        }
                    }
                }
            };

            AppDomain.CurrentDomain.UnhandledException += (sender, e) =>
            {
                var ex = e.ExceptionObject as Exception;
                Debug.WriteLine($"[非UI线程异常] {ex?.Message}");
            };

        
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            string strname = Process.GetCurrentProcess().ProcessName;
            int a = Process.GetProcessesByName(Process.GetCurrentProcess().ProcessName).Count();
            if (Process.GetProcessesByName(Process.GetCurrentProcess().ProcessName).Count() > 1)
            {
                MessageBox.Show("软件已经启动，请在后台确认。");
                Thread.Sleep(1000);
                Environment.Exit(0);
                return;
            }

            
            Process instance = GetRunningInstance();
            if (instance == null)
            {
                AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
                ClearMemoryHelper.ClearMemory();
                ReadConfig();
                try
                {
                    {
                        
                        FrmLogin frm = new FrmLogin();

                        if (frm.ShowDialog() == DialogResult.OK)
                        {
                            Debug.WriteLine($"[启动] 开始加载主窗体: {stopwatch.ElapsedMilliseconds}ms");
                            var mainForm = new FrmMain();
                            Debug.WriteLine($"[启动] 主窗体创建完成: {stopwatch.ElapsedMilliseconds}ms");
                            Application.Run(mainForm);
                            Debug.WriteLine($"[启动] 应用程序运行: {stopwatch.ElapsedMilliseconds}ms");
                        }
                    }

                }
                catch (Exception ex)
                {
                    MessageBox.Show($"退出异常：{ex.Message}\n{ex.StackTrace}", "退出告警");
                }
            }
            else
            {
                // 激活以前的实例
                HandleRunningInstance(instance);
            }
        }

        /// <summary>
        /// 配置，数据库初始化
        /// </summary>
        public static void ReadConfig()
        {
            //LogHelper.Instance.InitLog(Application.StartupPath + "\\Logs\\");
            LogHelper.Instance.InitLog("D:\\APILog\\Logs\\");
            // 读取 XML 文件  
            CommonMethods.Configxml = CommonMethods.ReadXmlConfig(CommonMethods.xmlFilePath);
            string MySlqconnString1 = ConfigurationManager.ConnectionStrings["mysql"].ToString();//本地
            string MySlqconnString2 = ConfigurationManager.ConnectionStrings["mysql2"].ToString();//远端
            string strDBType = ConfigurationManager.AppSettings["DefaultDb"].ToString();
            var connDbType = (SqlSugar.DbType)Enum.Parse(typeof(SqlSugar.DbType), strDBType);
            CommonMethods.db.SetConnectionStr(MySlqconnString1, SqlSugar.DbType.MySql);
            CommonMethods.dbServer.SetConnectionStr(MySlqconnString2, SqlSugar.DbType.MySql);
            CommonMethods.sysConfig.SwipeCardMode = Convert.ToBoolean(CommonMethods.GetConfigValue(CommonMethods.Configxml, "CONFIG_INFO", "EnableCardMode", "false"));//开启刷卡模式?
        }


        /// <summary>
        ///  当某个异常未被捕获时出现，回调方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
        {
            try
            {
                Exception ex = e.ExceptionObject as Exception;
                if (ex != null)
                {
                    LogHelper.Instance.WriteEX(ex);
                    if (ex.StackTrace.Contains("Finalize"))
                    {
                        LogHelper.Instance.WriteEX($"资源释放异常（Finalizer）", ex);
                        MessageBox.Show($"资源释放失败：{ex.Message}\n这是退出告警的核心原因！", "关键错误");
                    }
                    else
                    {
                        LogHelper.Instance.WriteEX($"全局未处理异常 ", ex);
                    }
                }
                    
                MessageBox.Show($"程序出现大异常，请联系 【金源自动化软件设计部】。\r\n异常信息: {ex.Message}\r\n异常堆栈：{ex.StackTrace}",
                      "致命错误", MessageBoxButtons.OK, MessageBoxIcon.Stop);
            }
            finally
            {
                Application.Exit();
            }
        }

        

        /// <summary>
        /// 返回正在运行的程序进程
        /// </summary>
        /// <returns></returns>
        public static Process GetRunningInstance()
        {
            Process current = Process.GetCurrentProcess();
            Process[] processes = Process.GetProcessesByName(current.ProcessName);

            foreach (Process process in processes)
            {
                if (process.Id != current.Id)
                    if (Assembly.GetExecutingAssembly().Location.Replace("/", "\\") == current.MainModule.FileName)
                        return process;
            }
            return null;
        }

        /// <summary>
        /// 已经有了就把它激活，并将其窗口放置最前端
        /// </summary>
        /// <param name="instance"></param>
        public static void HandleRunningInstance(Process instance)
        {
            ShowWindowAsync(instance.MainWindowHandle, SW_MAXIMIZE);
            SetForegroundWindow(instance.MainWindowHandle);
        }
    }
}