using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Threading;

namespace TouchCashier
{
    /// <summary>
    /// App.xaml 的交互逻辑
    /// </summary>
    public partial class App : Application
    {
        System.Threading.Mutex mutex;
        public App()
        {
            //主线程非预期异常处理事件，记录异常日志，重启应用程序
            DispatcherUnhandledException += new DispatcherUnhandledExceptionEventHandler(App_DispatcherUnhandledException);
            //子线程非预期异常处理事件，记录异常日志
            AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
            //系统正在关机或注销时事件，记录关闭信息
            SystemEvents.SessionEnding += new SessionEndingEventHandler(SystemEvents_SessionEnding);
            //程序运行事件
            Startup += new StartupEventHandler(App_Startup);
        }

        /// <summary>
        /// 系统关机或注销事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void SystemEvents_SessionEnding(object sender, SessionEndingEventArgs e)
        {
            SessionEndReasons reason = e.Reason;
            switch (reason)
            {
                case SessionEndReasons.Logoff:
                    WorkUtils.PublicStore.LoggerHelper.WriteLogger("Windows正在注销。");
                    break;
                case SessionEndReasons.SystemShutdown:
                    WorkUtils.PublicStore.LoggerHelper.WriteLogger("Windows正在关闭。");
                    break;
            }
        }

        /// <summary>
        /// UI线程异常处理事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        void App_DispatcherUnhandledException(object sender, DispatcherUnhandledExceptionEventArgs e)
        {
            WorkUtils.PublicStore.LoggerHelper.WriteLogger($"主线程发生异常，重新启动系统。错误信息：{e.Exception.Message}");
            e.Handled = true;
            try
            {
                //重启系统
                System.Diagnostics.Process.Start("AutoUpdateEx.exe");
                System.Environment.Exit(0);
            }
            catch (Exception) { System.Environment.Exit(0); }
        }

        /// <summary>
        /// 非UI线程异常处理事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
        {
            WorkUtils.PublicStore.LoggerHelper.WriteLogger($"子线程发生异常，重新启动系统。错误信息：{(e.ExceptionObject as Exception).Message}");
            try
            {
                //重启系统
                System.Diagnostics.Process.Start("AutoUpdateEx.exe");
                System.Environment.Exit(0);
            }
            catch (Exception) { System.Environment.Exit(0); }
        }

        /// <summary>
        /// 程序启动处理
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        void App_Startup(object sender, StartupEventArgs e)
        {
            mutex = new System.Threading.Mutex(true, "TouchCashier", out bool ret);
            if (!ret)
            {
                Environment.Exit(0);
            }
            else
            {
                MainFontSizeChange();
                SecondMainFontSizeChange();
                MainWindow _MainWindow = new MainWindow();
                _MainWindow.Show();
            }
        }

        /// <summary>
        /// 主屏幕窗口字体大小计算
        /// </summary>
        private void MainFontSizeChange()
        {
            //超大号字体
            double supersize = ((SystemParameters.PrimaryScreenWidth / 6.5) / 3 * 2) / 5;
            if (supersize < 28)
            {
                supersize = 28;
            }
            Current.Resources.Remove("SuperFontSize");
            Current.Resources.Add("SuperFontSize", supersize);

            double titlesize = ((SystemParameters.PrimaryScreenWidth / 10) / 3 * 2) / 5;
            if (titlesize < 18)
            {
                titlesize = 18;
            }
            Current.Resources.Remove("TitleFontSize");
            Current.Resources.Add("TitleFontSize", titlesize);

            double tabsize = ((SystemParameters.PrimaryScreenWidth / 10) / 3 * 2) / 5 * 0.9;
            if (tabsize < 16)
            {
                tabsize = 16;
            }
            Current.Resources.Remove("TabFontSize");
            Current.Resources.Add("TabFontSize", tabsize);

            double gridsize = ((SystemParameters.PrimaryScreenWidth / 10) / 3 * 2) / 5 * 0.8;
            if (gridsize < 14)
            {
                gridsize = 14;
            }
            Current.Resources.Remove("GridFontSize");
            Current.Resources.Add("GridFontSize", gridsize);


            double controlsize = ((SystemParameters.PrimaryScreenWidth / 10) / 3 * 2) / 5 * 0.7;
            if (controlsize < 12)
            {
                controlsize = 12;
            }
            Current.Resources.Remove("ControlFontSize");
            Current.Resources.Add("ControlFontSize", controlsize);
        }
        /// <summary>
        /// 副屏幕窗口字体大小计算
        /// </summary>
        private void SecondMainFontSizeChange()
        {
            double db_ScreenWidth = SystemParameters.PrimaryScreenWidth;
            if (System.Windows.Forms.Screen.AllScreens.Length > 1)
            {
                db_ScreenWidth = System.Windows.Forms.Screen.AllScreens[1].Bounds.Width;
            }
            //超大号字体
            double supersize = ((db_ScreenWidth / 6.5) / 3 * 2) / 5;
            if (supersize < 28)
            {
                supersize = 28;
            }
            Current.Resources.Remove("SecondSuperFontSize");
            Current.Resources.Add("SecondSuperFontSize", supersize);

            double titlesize = ((db_ScreenWidth / 9) / 3 * 2) / 5;
            if (titlesize < 20)
            {
                titlesize = 20;
            }
            Current.Resources.Remove("SecondTitleFontSize");
            Current.Resources.Add("SecondTitleFontSize", titlesize);

            double tabsize = ((db_ScreenWidth / 10) / 3 * 2) / 5;
            if (tabsize < 16)
            {
                tabsize = 16;
            }
            Current.Resources.Remove("SecondTabFontSize");
            Current.Resources.Add("SecondTabFontSize", tabsize);

            double gridsize = ((db_ScreenWidth / 10) / 3 * 2) / 5 * 0.8;
            if (gridsize < 14)
            {
                gridsize = 14;
            }
            Current.Resources.Remove("SecondGridFontSize");
            Current.Resources.Add("SecondGridFontSize", gridsize);


            double controlsize = ((SystemParameters.PrimaryScreenWidth / 10) / 3 * 2) / 5 * 0.7;
            if (controlsize < 12)
            {
                controlsize = 12;
            }
            Current.Resources.Remove("SecondControlFontSize");
            Current.Resources.Add("SecondControlFontSize", controlsize);
        }

    }
}