using Active_Client.View;
using Chromium;
using Chromium.Event;
using Chromium.WebBrowser;
using Chromium.WebBrowser.Event;
using Client.Config;
using Client.Utils;
using Microsoft.Win32;
using System;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Management;
using System.Security.Permissions;
using System.Threading;
using System.Windows.Forms;

namespace Active_Client
{
    public static class Program
    {
        //Set the Mutex of GUID
        static Mutex CmsStepClientMutex = new Mutex(true, "{66fa29db-925a-402b-a4c7-d3d780fb1bc3}");


        ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
        #region MAIN_METHOD

        [STAThread]
        [SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.ControlAppDomain)]
        static void Main(string[] args)
        {
            //Crate General Exception Handler
            AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(GeneralExMethod);


            //Read App Configuration
            readConfiguration();

            //Initialize Chromium
            InitializeCefSettings();

            //Check the first argument -> Url
            if (args.Count() > 0)
            {
                // Read ARGS Config
                if (!String.IsNullOrWhiteSpace(args[0]))
                {
                    Config.ConnectionConfig.BypassReadConfiguration = true;
                    Config.ConnectionConfig.StartingUrl = args[0];
                }
                else
                    Config.ConnectionConfig.BypassReadConfiguration = false;
            }


            //Check if is already running an instance of this application
            if (!CmsStepClientMutex.WaitOne(TimeSpan.Zero, true))
                ShowAlarmAndClose("Only one istance of " + Application.ProductName + " can be executed!");

            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);

            //Check Graphic Card in Energy Saving mode
            checkGraphicCard();

            //Run the Loading Form
            Application.Run(new OpeningForm());

            //Run the Main-Browser Form
            Application.Run(new MainForm());

            //Force show Taskbar
            NcWindow.ShowTaskBar();
        }

        #endregion

        ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
        #region CONFIG_METHODS

        //Sub-Method used to read the configuration
        static private void readConfiguration()
        {
            //Read the Config
            try
            {
                ConfigController.ReadStartupConfig();
            }
            catch (Exception E)
            {
                ShowAlarmAndClose(E.Message);
            }
        }

        static private void checkGraphicCard()
        {

            ManagementObjectSearcher VideoCardsQuery = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM Win32_VideoController");
            ManagementObjectCollection VideoCards = VideoCardsQuery.Get();
            //Check if i have more Cards
            if (VideoCards.Count > 1)
            {
                //Prepare List of Cards
                String Cardlist = "";
                foreach (ManagementObject card in VideoCards)
                {
                    Cardlist = Cardlist + "  - " + card["Name"] + "\n";
                }

                //If is Win 10 check the Registry Key
                if (Environment.OSVersion.Version.Major == 10)
                {
                    string keyName = @"HKEY_CURRENT_USER\Software\Microsoft\DirectX\UserGpuPreferences";
                    string valueName = System.Reflection.Assembly.GetExecutingAssembly().Location;
                    Object value = Registry.GetValue(keyName, valueName, null);
                    if (value == null || !value.Equals("GpuPreference=1;"))
                    {
                        //code if key Not Exist add it and restart
                        Registry.SetValue(keyName, valueName, "GpuPreference=1;");
                        MessageBox.Show("Active has foundthis Graphic Cards:\n\n" + Cardlist + "\nThe graphic configuration has been setted. Press Ok to restart the Application", Application.ProductName);
                        Application.Restart();
                        Environment.Exit(0);
                    }
                }
            }
        }
        #endregion

        ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
        #region CHROMIUMFX_METHODS

        //Start Chromium Settings 
        static private void InitializeCefSettings()
        {
            //Check if it is present all resources
            CheckResourcesFolder();

            //Setup the CEF Folder
            if (CfxRuntime.PlatformArch == CfxPlatformArch.x64)
                CfxRuntime.LibCefDirPath = Constants.CEF_X64_PATH;
            else
                CfxRuntime.LibCefDirPath = Constants.CEF_X86_PATH;


            //Add the event variables
            ChromiumWebBrowser.OnBeforeCfxInitialize += Chromium_OnBeforeCfxInitialize;
            ChromiumWebBrowser.OnBeforeCommandLineProcessing += Chromium_OnBeforeCommandLineProcessing;

            //Initialize Cef
            try
            {
                ChromiumWebBrowser.Initialize();
            }
            catch (Exception E)
            {
                ShowAlarmAndClose(E.Message);
            }
        }



        //Method called Before Cef Command-Line Send
        static void Chromium_OnBeforeCommandLineProcessing(CfxOnBeforeCommandLineProcessingEventArgs e)
        {
            if (Config.ClientConfig.RenderingMethod == Constants.Rendering.CPU)
                e.CommandLine.AppendSwitch("--disable-gpu");

            e.CommandLine.AppendSwitch("--enable-transparent-visuals");
            e.CommandLine.AppendSwitch("--disable-pinch");
            e.CommandLine.AppendSwitch("--enable-media-stream");
            e.CommandLine.AppendSwitch("--enable-usermedia-screen-capture");
            e.CommandLine.AppendSwitch("--no-proxy-server");
            e.CommandLine.AppendSwitch("--ignore-certificate-errors-spki-list");
            e.CommandLine.AppendSwitch("--ignore-certificate-errors");
            e.CommandLine.AppendSwitch("--ignore-ssl-errors");
        }



        //Method called Before Cef Initialization
        static void Chromium_OnBeforeCfxInitialize(OnBeforeCfxInitializeEventArgs e)
        {
            try
            {
                if (Config.ConnectionConfig.DeleteCahceFolderOnStartup && Directory.Exists(Constants.BROWSER_CACHE_FOLDER))
                {
                    Directory.Delete(Constants.BROWSER_CACHE_FOLDER, true);
                }
            }
            catch (Exception E)
            {
                ShowAlarmAndClose(E.Message);
            }


            e.Settings.WindowlessRenderingEnabled = true;

            //Path Setup
            e.Settings.CachePath = Constants.BROWSER_CACHE_FOLDER;
            e.Settings.LocalesDirPath = Constants.CEF_LOCALES_PATH;
            e.Settings.ResourcesDirPath = CfxRuntime.LibCefDirPath;
            e.Settings.Locale = CultureInfo.CurrentUICulture.TwoLetterISOLanguageName;
        }



        //Method called Before Cef Initialization
        static void CheckResourcesFolder()
        {
            if (!Directory.Exists(Constants.CEF_PATH))
                ShowAlarmAndClose("CEF Direcory not found");

            if (!Directory.Exists(Constants.CEF_LOCALES_PATH))
                ShowAlarmAndClose("CEF Locales Direcory not found");
        }

        #endregion

        ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
        #region ALARM_METHODS

        //Method Used to Show an alarm and close the application
        public static void ShowAlarmAndClose(string Message)
        {
            MessageBox.Show(Message,
                                Application.ProductName,
                                MessageBoxButtons.OK,
                                MessageBoxIcon.Error,
                                MessageBoxDefaultButton.Button1
                            );
            Environment.Exit(-1);
        }



        private static void GeneralExMethod(object sender, UnhandledExceptionEventArgs args)
        {
            Exception e = (Exception)args.ExceptionObject;

            //Create Directory 
            if (!Directory.Exists(Constants.CEF_EXCEPTIONLOG_PATH))
                Directory.CreateDirectory(Constants.CEF_EXCEPTIONLOG_PATH);

            //Log the exception on File
            string path = Constants.CEF_EXCEPTIONLOG_PATH + @"\" + DateTime.Now.ToString("yyyy_MM_dd") + @".txt";
            using (StreamWriter sw = File.AppendText(path))
                sw.WriteLine(DateTime.Now.ToString("HH:mm:ss") + " | Class.Name: " + e.TargetSite.ReflectedType.Name + " | Method.Name: " + e.TargetSite.Name + " | Error: " + e.Message);

            //Show Taskbar if the App is terminating
            if (args.IsTerminating)
                NcWindow.ShowTaskBar();
        }

        #endregion

    }
}