using System;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Imaging;
using System.Reflection;
using System.Runtime.InteropServices;
using System.IO;
using System.Windows.Forms;

using Vocaluxe.Base;
using Vocaluxe.Lib.Draw;
using Vocaluxe.Menu;

namespace Vocaluxe
{
    // just a small comment for the new develop branch
    static class MainProgram
    {
        static SplashScreen _SplashScreen;
        
        [STAThread]
        static void Main(string[] args)
        {
            AppDomain.CurrentDomain.AssemblyResolve += new ResolveEventHandler(AssemblyResolver);

            // Close program if there is another instance running
            if (!EnsureSingleInstance())
            {
                //TODO: put it into language file
                MessageBox.Show("Another Instance of Vocaluxe is already runnning!");
                return;
            }

            Application.DoEvents();

            // Init Log
            CLog.Init();

            CSettings.CreateFolders();
            Application.DoEvents();

            // Init Language
            CLog.StartBenchmark(0, "Init Language");
            CLanguage.Init();
            CLog.StopBenchmark(0, "Init Language");

            Application.DoEvents();

            // load config
            CLog.StartBenchmark(0, "Init Config");
            CConfig.LoadCommandLineParams(args);
            CConfig.UseCommandLineParamsBefore();
            CConfig.Init();
            CConfig.UseCommandLineParamsAfter();
            CLog.StopBenchmark(0, "Init Config");

            Application.DoEvents();
            _SplashScreen = new SplashScreen();
            Application.DoEvents();

            // Init Draw
            CLog.StartBenchmark(0, "Init Draw");
            CDraw.InitDraw();
            CLog.StopBenchmark(0, "Init Draw");

            Application.DoEvents();

            // Init Database
            CLog.StartBenchmark(0, "Init Database");
            CDataBase.Init();
            CLog.StopBenchmark(0, "Init Database");

            Application.DoEvents();

            // Init Playback
            CLog.StartBenchmark(0, "Init Playback");
            CSound.PlaybackInit();
            CLog.StopBenchmark(0, "Init Playback");

            Application.DoEvents();

            // Init Record
            CLog.StartBenchmark(0, "Init Record");
            CSound.RecordInit();
            CLog.StopBenchmark(0, "Init Record");

            Application.DoEvents();

            // Init Background Music
            CLog.StartBenchmark(0, "Init Background Music");
            CBackgroundMusic.Init();
            CLog.StopBenchmark(0, "Init Background Music");

            Application.DoEvents();

            // Init Profiles
            CLog.StartBenchmark(0, "Init Profiles");
            CProfiles.Init();
            CLog.StopBenchmark(0, "Init Profiles");

            Application.DoEvents();

            // Init Font
            CLog.StartBenchmark(0, "Init Font");
            CFonts.Init();
            CLog.StopBenchmark(0, "Init Font");

            Application.DoEvents();

            // Init VideoDecoder
            CLog.StartBenchmark(0, "Init Videodecoder");
            CVideo.Init();
            CLog.StopBenchmark(0, "Init Videodecoder");

            Application.DoEvents();

            // Load Cover
            CLog.StartBenchmark(0, "Init Cover");
            CCover.Init();
            CLog.StopBenchmark(0, "Init Cover");

            Application.DoEvents();

            // Theme System
            CLog.StartBenchmark(0, "Init Theme");
            CTheme.InitTheme();
            CLog.StopBenchmark(0, "Init Theme");

            Application.DoEvents();

            // Init Screens
            CLog.StartBenchmark(0, "Init Screens");
            CGraphics.InitGraphics();
            CLog.StopBenchmark(0, "Init Screens");

            Application.DoEvents();

            // Init Game;
            CLog.StartBenchmark(0, "Init Game");
            CGame.Init();
            CLog.StopBenchmark(0, "Init Game");

            Application.DoEvents();
            System.Threading.Thread.Sleep(10000);
            // Start Main Loop
            _SplashScreen.Close();
            CDraw.MainLoop();

            // Unloading
            CSound.RecordCloseAll();
            CSound.CloseAllStreams();
            CVideo.VdCloseAll();
            CDraw.Unload();
            CLog.CloseAll();
        }

        static Assembly AssemblyResolver(Object sender, ResolveEventArgs args)
        {
            string[] arr = args.Name.Split(new Char[] { ',' });
            if (arr != null)
            {
#if ARCH_X86
                Assembly assembly = Assembly.LoadFrom("x86\\" + arr[0] + ".dll");
#endif

#if ARCH_X64
                Assembly assembly = Assembly.LoadFrom("x64\\" + arr[0] + ".dll");
#endif

                return assembly;
            }
            return null;
        }

        static bool EnsureSingleInstance()
        {
            Process currentProcess = Process.GetCurrentProcess();
            Process[] processes = Process.GetProcesses();

            if (processes == null)
                return true;

            for (int i = 0; i < processes.Length; i++)
            {
                if (processes[i].Id != currentProcess.Id && currentProcess.ProcessName == processes[i].ProcessName)
                    return false;
            }

            return true;
        }
    }

    class SplashScreen : Form
    {
        Bitmap logo;

        public SplashScreen()
        {
            string path = Path.Combine(Environment.CurrentDirectory, Path.Combine(CSettings.sFolderGraphics, CSettings.sLogo));
            if (File.Exists(path))
            {
                try
                {
                    logo = new Bitmap(path);
                    this.ClientSize = new Size(logo.Width, logo.Height);
                }
                catch (Exception e)
                {
                    CLog.LogError("Error loading logo: " + e.Message);
                }
                
            }
            else
                CLog.LogError("Can't find " + path);

            path = Path.Combine(System.Environment.CurrentDirectory, CSettings.sIcon);
            if (File.Exists(path))
            {
                try
                {
                    this.Icon = new System.Drawing.Icon(path);
                }
                catch (Exception e)
                {
                    CLog.LogError("Error loading icon: " + e.Message);                    
                }
            }
            else
                CLog.LogError("Can't find " + path);

            SetStyle(ControlStyles.SupportsTransparentBackColor, true);
            this.BackColor = Color.Transparent;

            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;         
            this.Text = CSettings.sProgramName;
            this.CenterToScreen();
            this.Show();
        }
        
        protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
        {          
        }

        protected override void OnPaintBackground(System.Windows.Forms.PaintEventArgs e)
        {
            if (logo == null)
                return;

            Graphics g = e.Graphics;
            g.DrawImage(logo, new Rectangle(0, 0, this.Width, this.Height));
        }       
    }
}