using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using EmuXPortal.Api;
using EmuXPortal.Logging;
using System.Diagnostics;
using System.Reflection;
using System.Threading;
using Utilities.TransparentControls;

namespace EmuXPortal
{
    public partial class Form1 : Form
    {
        IEmuConfig CurrentSelectedRom = null;
        PlatformControl CurrentPlatformControl = null;
        GameControl CurrentGameControl = null;
        public Form1()
        {
            InitializeComponent();
            platform_flow.Dock = DockStyle.Fill;
            rom_flow.Dock = DockStyle.Fill;
          
        }
     
        private void Form1_Load(object sender, EventArgs e)
        {
            Config.LoadConfig();
            Config.InitializePresentationForm(this);           
        }
        private void Form1_Shown(object sender, EventArgs e) { platform_flow.Visible = true; }
        void platform_ctrl_LostFocus(object sender, EventArgs e)
        {
            PlatformControl c = sender as PlatformControl;
            c.BorderStyle = BorderStyle.None;
        }

        void platform_ctrl_GotFocus(object sender, EventArgs e)
        {
            PlatformControl c = sender as PlatformControl;
            c.BorderStyle = BorderStyle.FixedSingle;
            CurrentPlatformControl = c;
        }

        void platform_ctrl_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e)
        {
            PlatformControl c = sender as PlatformControl;
            if (e.KeyCode == Keys.Enter)
            {
                // load this platform
                platform_flow.Visible = false;
                CurrentSelectedRom = c.Tag as IEmuConfig;
                rom_flow.Visible = true;
                rom_flow.BringToFront();
            }
            if (e.KeyCode == Keys.Back)
            {
                this.Close();
            }
            if ((e.KeyCode >= Keys.A && e.KeyCode <= Keys.Z) ||
                (e.KeyCode >= Keys.D0 && e.KeyCode <= Keys.D9))
            {                
                char t = (char)e.KeyCode;
                PlatformControl ctrl = (platform_flow.GetNextControl(CurrentPlatformControl, true) as PlatformControl);
                if (ctrl == null) { ctrl = (platform_flow.GetNextControl(platform_flow.Controls[0], true) as PlatformControl); }
                bool found = false;
                PlatformControl pc = CurrentPlatformControl;
                bool wrapped = false;
                bool not_found = true;
                while (!found)
                {
                    if (wrapped)
                    {
                        foreach (Control ctl in platform_flow.Controls) 
                        { 
                            PlatformControl p_ctl = ctl as PlatformControl; if (p_ctl.PlatformName.ToLower().StartsWith(t.ToString().ToLower())) { not_found = false; } 
                        }
                        if (not_found) { found = true; }
                    }
                    ctrl = (platform_flow.GetNextControl(pc, true) as PlatformControl);
                    if (ctrl == null)
                    {
                        ctrl = platform_flow.Controls[0] as PlatformControl;
                        wrapped = true;
                    }
                    if (ctrl.PlatformName.ToLower().StartsWith(t.ToString().ToLower()))
                    {
                        platform_flow.ScrollControlIntoView(ctrl);
                        ctrl.Select();
                        found = true;
                    }
                    pc = ctrl;
                }
            }
        }

        private void platform_flow_VisibleChanged(object sender, EventArgs e)
        {
            if (!platform_flow.Visible) return;
            platform_flow.Controls.Clear();
            platform_flow.BringToFront();
            Stopwatch t = new Stopwatch();
            t.Start();
            platformWorker.RunWorkerAsync(t);
        }

        private void rom_flow_VisibleChanged(object sender, EventArgs e)
        {
            if (!rom_flow.Visible) return;
            rom_flow.Controls.Clear();
            rom_flow.BringToFront();
            Stopwatch t = new Stopwatch();
            t.Start();
            gameWorker.RunWorkerAsync(t);
        }

        void game_ctrl_LostFocus(object sender, EventArgs e)
        {
            GameControl c = sender as GameControl;
            c.BorderStyle = BorderStyle.None;
        }

        void game_ctrl_GotFocus(object sender, EventArgs e)
        {
            GameControl c = sender as GameControl;
            c.BorderStyle = BorderStyle.FixedSingle;
            CurrentGameControl = c;
        }

        void game_ctrl_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e)
        {
            GameControl c = sender as GameControl;
            if (e.KeyCode == Keys.Enter)
            {
                IRomConfig config = c.Tag as IRomConfig;

                Process p = new Process();
                p.StartInfo.FileName = config.Config.EmuPath;
                p.StartInfo.Arguments = EmuConfigLoader.GetEMUOptions(config);
                p.Start();
            }
            if (e.KeyCode == Keys.Back)
            {
                rom_flow.Visible = false;
                platform_flow.Visible = true;
            }

            if ( (e.KeyCode >= Keys.A && e.KeyCode <= Keys.Z) || 
                (e.KeyCode >= Keys.D0 && e.KeyCode <= Keys.D9))
            {
                char t = (char)e.KeyCode;
                GameControl ctrl = (rom_flow.GetNextControl(CurrentPlatformControl, true) as GameControl);
                if (ctrl == null) { ctrl = (rom_flow.GetNextControl(rom_flow.Controls[0], true) as GameControl); }
                bool found = false;
                GameControl pc = CurrentGameControl;
                bool wrapped = false;
                bool not_found = true;
                while (!found)
                {
                    if (wrapped)
                    {
                        foreach (Control ctl in rom_flow.Controls)
                        {
                            GameControl p_ctl = ctl as GameControl; if (p_ctl.GameName.ToLower().StartsWith(t.ToString().ToLower())) { not_found = false; }
                        }
                        if (not_found) { found = true; }
                    }
                    ctrl = (rom_flow.GetNextControl(pc, true) as GameControl);
                    if (ctrl == null)
                    {
                        ctrl = rom_flow.Controls[0] as GameControl;
                        wrapped = true;
                    }
                    if (ctrl.GameName.ToLower().StartsWith(t.ToString().ToLower()))
                    {
                        rom_flow.ScrollControlIntoView(ctrl);
                        ctrl.Select();
                        found = true;
                    }
                    pc = ctrl;
                }           
            }
        }

        #region Background Workers

        private int GetFormWidth()
        {
            if (this.InvokeRequired)
            {
                return Convert.ToInt32(this.Invoke((MethodInvoker)delegate() { GetFormWidth(); }));
            }
            else
            {
                return this.Width;
            }
        }
        private void AddPlatformControl(Control c)
        {          
            if (platform_flow.InvokeRequired) { platform_flow.Invoke((MethodInvoker)delegate() { AddPlatformControl(c); }); }
            else 
            {
                platform_flow.Controls.Add(c);            
            }            
        }
        private void UpdatePlatformControls() 
        {
            if (platform_flow.InvokeRequired) { platform_flow.Invoke((MethodInvoker)delegate() { UpdatePlatformControls(); }); }
            else { this.Refresh(); this.Update(); }
        }
        private void AddGameControl(Control c)
        {
            if (rom_flow.InvokeRequired) { rom_flow.Invoke((MethodInvoker)delegate() { AddGameControl(c); }); }
            else
            {              
                rom_flow.Controls.Add(c);
            }
        }
        private void UpdateGameControls()
        {
            if (rom_flow.InvokeRequired) { rom_flow.Invoke((MethodInvoker)delegate() { UpdateGameControls(); }); }
            else { this.Refresh(); this.Update(); }
        }
        #region gameWorker
        private void gameWorker_DoWork(object sender, DoWorkEventArgs e)
        {
            Stopwatch t = e.Argument as Stopwatch;
            RomParser parser = new RomParser(CurrentSelectedRom);

            ProgressBarWithPercentageLabel bar = new ProgressBarWithPercentageLabel();
            AddGameControl(bar);
            UpdateGameControls();
            Application.DoEvents();
            Thread.Sleep(10);
            bar.Invoke(new MethodInvoker(delegate
            {
                bar.Message = "Please Wait...";
                bar.ShowPercentageLabel = true;
                bar.Margin = new System.Windows.Forms.Padding(0);
                bar.Size = new Size(GetFormWidth() - 25, 100);
            }));
            
            double count = 0;
            double total_count = parser.Roms.Count;
            foreach (IRomConfig config in parser.Roms)
            {
                GameControl game_ctrl = new GameControl();
                game_ctrl.Dock = DockStyle.Top;
                game_ctrl.Width = this.Width - 10;
                game_ctrl.Tag = config;
                game_ctrl.GameImage = config.RomImage;
                game_ctrl.GameName = config.RomTitle;
                game_ctrl.PreviewKeyDown += new PreviewKeyDownEventHandler(game_ctrl_PreviewKeyDown);
                game_ctrl.GotFocus += new EventHandler(game_ctrl_GotFocus);
                game_ctrl.LostFocus += new EventHandler(game_ctrl_LostFocus);
                AddGameControl(game_ctrl);
                UpdateGameControls();
                Application.DoEvents();
                int percent = (int)(100.0 * (count / total_count));
                logger.WriteLine("gameWorker_DoWork(): count={0} total={1} percent={2}",count,total_count,percent);
                bar.Invoke(new MethodInvoker(delegate
                {
                    bar.Value = percent;
                }));
                count++;
            }
            e.Result = t;
        }
        private void gameWorker_ProgressChanged(object sender, ProgressChangedEventArgs e) { }
        private void gameWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            Stopwatch t = e.Result as Stopwatch;
            rom_flow.Controls.RemoveAt(0);
            rom_flow.Controls[0].Select();
            (rom_flow.Controls[0] as GameControl).BorderStyle = BorderStyle.FixedSingle;
            t.Stop();
            logger.WriteLine("RomParser took: {0}s to parse roms", (int)t.Elapsed.TotalSeconds);
        }
        #endregion
        #region platformWorker
        private void platformWorker_DoWork(object sender, DoWorkEventArgs e)
        {
            Stopwatch t = e.Argument as Stopwatch;
            PlatformParser parser = new PlatformParser(Config.RomPath);
            double count = 0;
            double total_count = parser.Platforms.Count;
            ProgressBarWithPercentageLabel bar = new ProgressBarWithPercentageLabel();
            AddPlatformControl(bar);
            UpdatePlatformControls();
            Application.DoEvents();
            Thread.Sleep(10);
            bar.Invoke(new MethodInvoker(delegate
            {
                bar.Margin = new System.Windows.Forms.Padding(0);
                bar.Size = new Size(GetFormWidth() - 25, 100);
            }));
            foreach (IEmuConfig config in parser.Platforms)
            {
                PlatformControl platform_ctrl = new PlatformControl();
                platform_ctrl.Dock = DockStyle.Top;
                platform_ctrl.Width = this.Width - 10;
                platform_ctrl.Tag = config;
                platform_ctrl.PlatformImage = config.PlatformImage;
                platform_ctrl.PlatformName = config.ToString();
                platform_ctrl.PreviewKeyDown += new PreviewKeyDownEventHandler(platform_ctrl_PreviewKeyDown);
                platform_ctrl.GotFocus += new EventHandler(platform_ctrl_GotFocus);
                platform_ctrl.LostFocus += new EventHandler(platform_ctrl_LostFocus);
                AddPlatformControl(platform_ctrl);
                Application.DoEvents();
                int percent = (int)(100.0 * (count / total_count));
                logger.WriteLine("platformWorker_DoWork(): count={0} total={1} percent={2}", count, total_count, percent);
                bar.Invoke(new MethodInvoker(delegate
                {
                    bar.Value = percent;
                }));
                count++;
            }
            e.Result = t;
        }
        private void platformWorker_ProgressChanged(object sender, ProgressChangedEventArgs e) { }
        private void platformWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            Stopwatch t = e.Result as Stopwatch;
            platform_flow.Controls.RemoveAt(0);
            platform_flow.Controls[0].Select();
            (platform_flow.Controls[0] as PlatformControl).BorderStyle = BorderStyle.FixedSingle;
            logger.WriteLine("PlatformParser took: {0}s to parse platforms", (int)t.Elapsed.TotalSeconds);
        }
        #endregion
        #endregion
    }
}