using GCAS.Code;
using Microsoft.Win32;
using System;
using System.Configuration;
using System.Diagnostics;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Windows.Forms;

namespace GCAS
{
    internal static class Program
    {

        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        private static void Main()
        {                                       //HSL 授权 
            if (!HslCommunication.Authorization.SetAuthorizationCode("f562cc4c-4772-4b32-bdcd-f3e122c534e3"))
            {
                LogHelper.WriteError("HSL授权失败");
                return;
            }
            var autoStart = ConfigurationManager.AppSettings["autoStart"];
            bool.TryParse(autoStart, out bool isAutoStart);
            AutoStart(isAutoStart);
            Process instance = RunningInstance();
            if (instance == null)
            {
                try
                {
                    Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);
                    //处理UI线程异常
                    Application.ThreadException += new ThreadExceptionEventHandler(Application_ThreadException);
                    //处理非UI线程异常
                    AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
                    Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
                    var language = ConfigurationManager.AppSettings["language"];
                    if (string.IsNullOrEmpty(language))
                    {
                        config.AppSettings.Settings.Add(new KeyValueConfigurationElement("language", "zh-Hans"));//增加
                    }
                    else
                    {
                        Thread.CurrentThread.CurrentUICulture = new System.Globalization.CultureInfo(language);
                    }


                    Application.EnableVisualStyles();
                    Application.SetCompatibleTextRenderingDefault(false);
                    Application.Run(new LoginForm());
                }
                catch (Exception ex)
                {
                    GetExceptionMsg(ex, string.Empty);
                    //XtraMessageBox.Show(str, "系统错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
            else
            {
                HandleRunningInstance(instance);
            }

        }


        private static void Application_ThreadException(object sender, ThreadExceptionEventArgs e)
        {
            string str = GetExceptionMsg(e.Exception, e.ToString());
            //XtraMessageBox.Show(str, "系统错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
            LogHelper.WriteError(str);
        }

        private static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
        {
            string str = GetExceptionMsg(e.ExceptionObject as Exception, e.ToString());
            //XtraMessageBox.Show(str, "系统错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
            LogHelper.WriteError(str);
        }

        /// <summary>
        /// 生成自定义异常消息
        /// </summary>
        /// <param name="ex">异常对象</param>
        /// <param name="backStr">备用异常消息：当ex为null时有效</param>
        /// <returns>异常字符串文本</returns>
        private static string GetExceptionMsg(Exception ex, string backStr)
        {
            StringBuilder sb = new StringBuilder();
            sb.AppendLine("****************************异常文本****************************");
            sb.AppendLine("【出现时间】：" + DateTime.Now.ToString());
            if (ex != null)
            {
                sb.AppendLine("【异常类型】：" + ex.GetType().Name);
                sb.AppendLine("【异常信息】：" + ex.Message);
                sb.AppendLine("【堆栈调用】：" + ex.StackTrace);
            }
            else
            {
                sb.AppendLine("【未处理异常】：" + backStr);
            }
            sb.AppendLine("***************************************************************");
            return sb.ToString();
        }

        [DllImport("User32.dll", EntryPoint = "FindWindow")]
        private static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

        /// <summary> 
        /// 该函数设置由不同线程产生的窗口的显示状态。 
        /// </summary> 
        /// <param name="hWnd">窗口句柄</param> 
        /// <param name="cmdShow">指定窗口如何显示。查看允许值列表，请查阅ShowWlndow函数的说明部分。</param> 
        /// <returns>如果函数原来可见，返回值为非零；如果函数原来被隐藏，返回值为零。</returns> 
        [DllImport("User32.dll")]
        private static extern bool ShowWindowAsync(IntPtr hWnd, int cmdShow);

        /// <summary> 
        /// 该函数将创建指定窗口的线程设置到前台，并且激活该窗口。键盘输入转向该窗口，并为用户改各种可视的记号。系统给创建前台窗口的线程分配的权限稍高于其他线程。 
        /// </summary> 
        /// <param name="hWnd">将被激活并被调入前台的窗口句柄。</param> 
        /// <returns>如果窗口设入了前台，返回值为非零；如果窗口未被设入前台，返回值为零。</returns> 
        [DllImport("User32.dll")]
        private static extern bool SetForegroundWindow(IntPtr hWnd);
        private const int WS_SHOWNORMAL = 1;

        /// <summary> 
        /// 获取正在运行的实例，没有运行的实例返回null; 
        /// </summary> 
        public static Process RunningInstance()
        {
            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> 
        /// 显示已运行的程序。 
        /// </summary> 
        public static void HandleRunningInstance(Process instance)
        {
            var mainHandle = instance.MainWindowHandle;
            if (mainHandle == IntPtr.Zero)
            {
                mainHandle = FindWindow(null, "电子秤称重管理系统-灰渣吊");
            }
            ShowWindowAsync(instance.MainWindowHandle, WS_SHOWNORMAL); //显示，可以注释掉 
            SetForegroundWindow(instance.MainWindowHandle);            //放到前端 
        }
        /// <summary>  
        /// 修改程序在注册表中的键值  
        /// </summary>  
        /// <param name="isAuto">true:开机启动,false:不开机自启</param> 
        private static void AutoStart(bool isAuto = true, bool showinfo = true)
        {
            try
            {
                if (isAuto == true)
                {
                    RegistryKey R_local = Registry.CurrentUser;
                    RegistryKey R_run = R_local.CreateSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Run");
                    R_run.SetValue("电子秤称重管理系统-垃圾吊", Application.ExecutablePath);
                    R_run.Close();
                    R_local.Close();
                }
                else
                {
                    RegistryKey R_local = Registry.CurrentUser;
                    RegistryKey R_run = R_local.CreateSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Run");
                    R_run.DeleteValue("电子秤称重管理系统-垃圾吊", false);
                    R_run.Close();
                    R_local.Close();
                }
            }
            catch (Exception)
            {
                if (showinfo)
                    MessageBox.Show("您需要管理员权限修改", "提示");
            }
        }
    }
}