using Chromium;
using Chromium.Event;
using Chromium.WebBrowser;
using Chromium.WebBrowser.Event;
using Client.Config;
using Client.Utils;
using CMS_Client.View;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

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


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

        [STAThread]
        static void Main(string[] args)
        {

            //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 (!CmsStepMutex.WaitOne(TimeSpan.Zero, true))
                ShowAlarmAndClose("Only one istance of " + Application.ProductName + " can be executed!");

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

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

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

            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);
            }
        }


        #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");

        }



        //Method called Before Cef Initialization
        static void Chromium_OnBeforeCfxInitialize(OnBeforeCfxInitializeEventArgs e)
        {
            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;            
        }



        //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
        private static void ShowAlarmAndClose(string Message)
        {
            MessageBox.Show(Message,
                                Application.ProductName,
                                MessageBoxButtons.OK,
                                MessageBoxIcon.Error,
                                MessageBoxDefaultButton.Button1
                            );
            Environment.Exit(-1);
        }

        #endregion
    }
}