using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Windows;
using Aitex.Core.RT.Log;
using Aitex.Core.UI.View;
using System.Windows.Media.Imaging;
using Aitex.Core.UI.View.Frame;
using System.Threading;
using Aitex.Core.RT.ConfigCenter;
using Aitex.Triton160.UI;

namespace Triton160
{
    /// <summary>
    /// Interaction logic for App.xaml
    /// </summary>
    public partial class App : Application
    {
        static Mutex _mutex;
        static bool AnotherInstanceIsRunning()
        {
            try
            {
                string applicationName = "Triton160UI";
                //createnew single app without throw an erro
                bool createNew;
                _mutex = new Mutex(true, applicationName, out createNew);
                return !createNew;
            }
            catch (Exception)
            {
                return false;
            }
        }

        public App()
        {
            AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
            Application.Current.DispatcherUnhandledException += new System.Windows.Threading.DispatcherUnhandledExceptionEventHandler(Current_DispatcherUnhandledException);

        }

        void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
        {
            ProcessUnexpectedError(e.ExceptionObject as Exception);
        }

        private void Current_DispatcherUnhandledException(object sender, System.Windows.Threading.DispatcherUnhandledExceptionEventArgs e)
        {
            e.Handled = true;

            ProcessUnexpectedError(e.Exception);
        }

        private void ProcessUnexpectedError(Exception ex)
        {
            LOG.Write(ex, "UI exception");

            MessageBox.Show(MainWindow, "Exception found during UI system running, please find detail information from the log file. \r\n\r\n please restart the ui system to restore.", "ui internal error", MessageBoxButton.OK, MessageBoxImage.Error);

            Environment.Exit(0);
        }

        protected override void OnStartup(StartupEventArgs e)
        {
            base.OnStartup(e);

            CheckAnotherInstanceRunning("Triton160.UI");

            //if (AnotherInstanceIsRunning())
            //{
            //    if (!_mutex.WaitOne(1000))
            //    {
            //        System.Windows.Forms.MessageBox.Show("Triton160 Already Running。\r\n", "Triton160 start up", System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Warning);
            //        Environment.Exit(0);
            //    }
            //}

            Triton160UiSystem.Instance.Initialize();
        }

        void CheckAnotherInstanceRunning(string appName)
        {
            _mutex = new Mutex(true, appName, out bool createNew);

            if (!createNew)
            {
                if (!_mutex.WaitOne(1000))
                {
                    string msg = $"{appName} is already running，can not start again";
                    System.Windows.Forms.MessageBox.Show(msg, $"{appName} Launch Failed", System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Warning);
                    Environment.Exit(0);
                }
            }
        }

        protected override void OnExit(ExitEventArgs e)
        {
            Triton160UiSystem.Instance.Terminate();

            base.OnExit(e);
        }
    }
}