using System;
using System.IO;
using System.Security.Principal;
using System.Text;
using System.Windows.Forms;
using System.Xml;
using UAS_MES_NEW.Entity;
using UAS_MES_NEW.PublicMethod;

namespace UAS_MES_NEW
{
    static class Program
    {
        /// <summary>
        /// 应用程序的主入口点
        /// </summary>
        [STAThread]
        static void Main()
        {
            try
            {
                WindowsIdentity identity = WindowsIdentity.GetCurrent();
                WindowsPrincipal principal = new WindowsPrincipal(identity);
                //设置应用程序处理异常方式:ThreadException处理
                Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);
                //处理UI线程异常
                Application.ThreadException += new System.Threading.ThreadExceptionEventHandler(Application_ThreadException);
                //处理非UI线程异常
                AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
                #region 应用程序的主入口点
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                //处理全局事件
                GlobalEventsHandler g = new GlobalEventsHandler();
                //添加全局事件的监听
                Application.AddMessageFilter(g);
                //启用异常记录日志的操作
                string sysdisc = Environment.GetEnvironmentVariable("windir").Substring(0, 1);
                //创建标签缓存的文件夹
                if (!Directory.Exists(ftpOperater.DownLoadTo))
                    Directory.CreateDirectory(ftpOperater.DownLoadTo);
                if (!Directory.Exists(SystemInf.LogFolder))
                    Directory.CreateDirectory(SystemInf.LogFolder);
                FileStream fs = new FileStream(SystemInf.LogFolder + DateTime.Now.ToString("yyyy-MM-dd") + ".txt", FileMode.OpenOrCreate, FileAccess.ReadWrite);
                fs.Close();
                //创建存储登录信息的文件
                if (!Directory.Exists(SystemInf.CacheFolder))
                    Directory.CreateDirectory(SystemInf.CacheFolder);
                FileStream fcaches = new FileStream(SystemInf.CacheFilePath, FileMode.OpenOrCreate, FileAccess.ReadWrite);
                fcaches.Close();
                DevExpress.UserSkins.BonusSkins.Register();
                DevExpress.Skins.SkinManager.EnableFormSkins();
                DevExpress.Skins.SkinManager.EnableMdiFormSkins();
                //判断是否xml文件大小为0
                FileInfo info = new FileInfo(SystemInf.CacheFilePath);
                if (info.Length == 0)
                {
                    XmlDocument doc = new XmlDocument();
                    //创建类型声明节点  
                    XmlNode node = doc.CreateXmlDeclaration("1.0", "utf-8", "");
                    doc.AppendChild(node);
                    //创建根节点  
                    XmlElement xeRoot = doc.CreateElement("cacheInfo");
                    doc.AppendChild(xeRoot);
                    doc.Save(SystemInf.CacheFilePath);
                }
                //创建记录打印进程的文件
                FileStream fas = new FileStream(SystemInf.CacheFolder + "lblprocess.txt", FileMode.OpenOrCreate, FileAccess.ReadWrite);
                fas.Close();
                if (principal.IsInRole(WindowsBuiltInRole.Administrator))
                {
                    //限制程序同时运行的实例数量
                    if (!CheckInstanceLimit())
                        return;
                    Application.Run(new Login());
                }
                else
                {
                    //创建启动对象
                    System.Diagnostics.ProcessStartInfo startInfo = new System.Diagnostics.ProcessStartInfo();
                    // 设置运行文件
                    startInfo.FileName = Application.ExecutablePath;
                    //设置启动动作,确保以管理员身份运行
                    startInfo.Verb = "runas";
                    //如果不是管理员，则启动UAC
                    System.Diagnostics.Process.Start(startInfo);
                }
                #endregion
            }
            catch (Exception ex)
            {
                string str = GetExceptionMsg(ex, string.Empty);
                MessageBox.Show(str, "系统错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        /// <summary>
        /// 允许程序同时运行的最大实例数
        /// </summary>
        private const int MaxInstanceCount = 5;

        /// <summary>
        /// 检测同名进程数量,超出上限时提示并禁止启动
        /// </summary>
        /// <returns>允许启动返回 true</returns>
        static bool CheckInstanceLimit()
        {
            try
            {
                //GetProcessesByName 的统计结果包含当前进程本身
                System.Diagnostics.Process[] processes = System.Diagnostics.Process.GetProcessesByName(
                    System.Diagnostics.Process.GetCurrentProcess().ProcessName);
                int count = processes.Length;
                foreach (System.Diagnostics.Process p in processes)
                {
                    p.Dispose();
                }
                if (count > MaxInstanceCount)
                {
                    MessageBox.Show("程序最多只能同时运行 " + MaxInstanceCount + " 个，请关闭其它窗口后再打开！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return false;
                }
                return true;
            }
            catch (Exception)
            {
                //统计进程失败时不拦截,避免程序无法启动
                return true;
            }
        }

        //处理线程的异常
        static void Application_ThreadException(object sender, System.Threading.ThreadExceptionEventArgs e)
        {
            string str = GetExceptionMsg(e.Exception, e.ToString());
            LogManager.DoLog(e.Exception.Message + "  " + e.Exception.TargetSite + "  " + e.Exception.StackTrace);
            MessageBox.Show(str, "提示", MessageBoxButtons.OK, MessageBoxIcon.Stop);
        }

        //未处理的异常统一通过这里返回
        static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
        {
            string str = GetExceptionMsg(e.ExceptionObject as Exception, e.ToString());
            LogManager.DoLog(str);
            MessageBox.Show(str, "提示", MessageBoxButtons.OK, MessageBoxIcon.Stop);
        }

        /// <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>
        static string GetExceptionMsg(Exception ex, string backStr)
        {
            StringBuilder sb = new StringBuilder();
            if (ex != null)
            {
                sb.AppendLine(ex.Message);
                sb.AppendLine("【异常方法】：" + ex.StackTrace);
            }
            //else { sb.AppendLine("【未处理异常】：" + backStr); }
            return sb.ToString();
        }
    }
}