using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.IO;
using System.Diagnostics;
using System.Threading;

namespace Handbrake
{
    public partial class frmMain : Form
    {
        private System.Diagnostics.Process hbProc;
        private Parsing.DVD thisDVD;

        // --------------------------------------------------------------
        // Some windows that require only 1 instance.
        // --------------------------------------------------------------
        private frmDvdInfo dvdInfoWindow = new frmDvdInfo();
        private frmQueue queueWindow = new frmQueue();

        public frmMain()
        {
            InitializeComponent();

            // Set the Version number lable to the corect version.
            Version.Text = "Version " + Properties.Settings.Default.GuiVersion;

            // Run the update checker.
            updateCheck();

            // Now load the users default if required.
            loadUserDefaults();
        }

        public void loadUserDefaults()
        { 
            try
            {
                if (Properties.Settings.Default.defaultSettings == "Checked")
                {
                    // Source
                    text_source.Text = Properties.Settings.Default.DVDSource;
                    drp_dvdtitle.Text = Properties.Settings.Default.DVDTitle;
                    drop_chapterStart.Text = Properties.Settings.Default.ChapterStart;
                    drop_chapterFinish.Text = Properties.Settings.Default.ChapterFinish;

                    // Destination
                    text_destination.Text = Properties.Settings.Default.VideoDest;
                    drp_videoEncoder.Text = Properties.Settings.Default.VideoEncoder;
                    drp_audioCodec.Text = Properties.Settings.Default.AudioEncoder;
                    text_width.Text = Properties.Settings.Default.Width;
                    text_height.Text = Properties.Settings.Default.Height;

                    // Picture Settings Tab
                    drp_crop.Text = Properties.Settings.Default.CroppingOption;
                    text_top.Text = Properties.Settings.Default.CropTop;
                    text_bottom.Text = Properties.Settings.Default.CropBottom;
                    text_left.Text = Properties.Settings.Default.CropLeft;
                    text_right.Text = Properties.Settings.Default.CropRight;
                    drp_subtitle.Text = Properties.Settings.Default.Subtitles;

                    // Video Settings Tab
                    text_bitrate.Text = Properties.Settings.Default.VideoBitrate;
                    text_filesize.Text = Properties.Settings.Default.VideoFilesize;
                    slider_videoQuality.Value = Properties.Settings.Default.VideoQuality;

                    if (Properties.Settings.Default.TwoPass == "Checked")
                    {
                        check_2PassEncode.CheckState = CheckState.Checked;
                    }
                    if (Properties.Settings.Default.DeInterlace == "Checked")
                    {
                        check_DeInterlace.CheckState = CheckState.Checked;
                    }
                    if (Properties.Settings.Default.Grayscale == "Checked")
                    {
                        check_grayscale.CheckState = CheckState.Checked;
                    }

                    drp_videoFramerate.Text = Properties.Settings.Default.Framerate;

                    if (Properties.Settings.Default.PixelRatio == "Checked")
                    {
                        CheckPixelRatio.CheckState = CheckState.Checked;
                    }
                    if (Properties.Settings.Default.turboFirstPass == "Checked")
                    {
                        check_turbo.CheckState = CheckState.Checked;
                    }
                    if (Properties.Settings.Default.largeFile == "Checked")
                    {
                        check_largeFile.CheckState = CheckState.Checked;
                    }
                    // Audio Settings Tab
                    drp_audioBitrate.Text = Properties.Settings.Default.AudioBitrate;
                    drp_audioSampleRate.Text = Properties.Settings.Default.AudioSampleRate;
                    drp_audioChannels.Text = Properties.Settings.Default.AudioChannels;

                    // H264 Tab
                    if (Properties.Settings.Default.CRF == "Checked")
                    {
                        CheckCRF.CheckState = CheckState.Checked;
                    }
                    rtf_h264advanced.Text = Properties.Settings.Default.H264;
                }
            }
            catch (Exception)
            {
                // No real need to alert the user. Try/Catch only in just incase there is a problem reading the settings xml file.
            }
        }

        public void updateCheck()
        {
            if (Properties.Settings.Default.updateStatus == "Checked")
            {

                try
                {
                    String updateFile = Properties.Settings.Default.updateFile;
                    WebClient client = new WebClient();
                    String data = client.DownloadString(updateFile);
                    String[] versionData = data.Split('\n');

                    if ((versionData[0] != Properties.Settings.Default.GuiVersion) || (versionData[1] != Properties.Settings.Default.CliVersion))
                    {
                        lbl_update.Visible = true;
                    }
                }
                // else fail displaying an error message.
                catch (Exception)
                {
                    // Silently ignore the error
                }
            }
        }

        #region The Menu Bar

        #region File Menu

        private void mnu_open_Click(object sender, EventArgs e)
        {
            string filename;
            File_Open.ShowDialog();
            filename = File_Open.FileName;
            if (filename != "")
            {
                try
                {
                    // Create StreamReader & open file
                    StreamReader line = new StreamReader(filename);
                    string temporyLine; // Used for reading the line into a varible before processing on the checkState items below.
                    
                    // Read in the data and set the correct GUI component with the setting.
                    text_source.Text = line.ReadLine();
                    drp_dvdtitle.Text = line.ReadLine();
                    drop_chapterStart.Text = line.ReadLine();
                    drop_chapterFinish.Text = line.ReadLine();
                    text_destination.Text = line.ReadLine();
                    drp_videoEncoder.Text = line.ReadLine();
                    drp_audioCodec.Text = line.ReadLine();
                    text_width.Text = line.ReadLine();
                    text_height.Text = line.ReadLine();
                    text_top.Text = line.ReadLine();
                    text_bottom.Text = line.ReadLine();
                    text_left.Text = line.ReadLine();
                    text_right.Text = line.ReadLine();
                    drp_subtitle.Text = line.ReadLine();
                    text_bitrate.Text = line.ReadLine();
                    text_filesize.Text = line.ReadLine();
                    slider_videoQuality.Value = int.Parse(line.ReadLine());

                    temporyLine = line.ReadLine();
                    if (temporyLine == "Checked")
                    {
                        check_2PassEncode.CheckState = CheckState.Checked;
                    }

                    temporyLine = line.ReadLine();
                    if (temporyLine == "Checked")
                    {
                        check_DeInterlace.CheckState = CheckState.Checked;
                    }

                    temporyLine = line.ReadLine();
                    if (temporyLine == "Checked")
                    {
                        check_grayscale.CheckState = CheckState.Checked;
                    }

                    drp_videoFramerate.Text = line.ReadLine();

                    temporyLine = line.ReadLine();
                    if (temporyLine == "Checked")
                    {
                        Check_ChapterMarkers.CheckState = CheckState.Checked;
                    }

                    temporyLine = line.ReadLine();
                    if (temporyLine == "Checked")
                    {
                        CheckPixelRatio.CheckState = CheckState.Checked;
                    }

                    temporyLine = line.ReadLine();
                    if (temporyLine == "Checked")
                    {
                        check_turbo.CheckState = CheckState.Checked;
                    }

                    temporyLine = line.ReadLine();
                    if (temporyLine == "Checked")
                    {
                        check_largeFile.CheckState = CheckState.Checked;
                    }
   
                    drp_audioBitrate.Text = line.ReadLine();
                    drp_audioSampleRate.Text = line.ReadLine();
                    drp_audioChannels.Text = line.ReadLine();
                    drp_audioMixDown.Text = line.ReadLine();
                    
                    // Advanced H264 Options
                    temporyLine = line.ReadLine();
                    if (temporyLine == "Checked")
                    {
                        CheckCRF.CheckState = CheckState.Checked;
                    }
                    rtf_h264advanced.Text = line.ReadLine();

                    // Close the stream
                    line.Close();


                    // Fix for SliderValue not appearing when Opening saved file
                    SliderValue.Text = slider_videoQuality.Value + "%";

                } catch (Exception){
                    MessageBox.Show("Unable to load profile.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Hand);
                }
            }
        }

        private void mnu_save_Click(object sender, EventArgs e)
        {

            string filename;
            File_Save.ShowDialog();
            filename = File_Save.FileName;
            if (filename != "")
            {
                try
                {
                    // Create a StreamWriter and open the file
                    StreamWriter line = new StreamWriter(filename);

                    //Source
                    line.WriteLine(text_source.Text);
                    line.WriteLine(drp_dvdtitle.Text);
                    line.WriteLine(drop_chapterStart.Text);
                    line.WriteLine(drop_chapterFinish.Text);
                    //Destination
                    line.WriteLine(text_destination.Text);
                    line.WriteLine(drp_videoEncoder.Text);
                    line.WriteLine(drp_audioCodec.Text);
                    line.WriteLine(text_width.Text);
                    line.WriteLine(text_height.Text);
                    //Picture Settings Tab
                    line.WriteLine(text_top.Text);
                    line.WriteLine(text_bottom.Text);
                    line.WriteLine(text_left.Text);
                    line.WriteLine(text_right.Text);
                    line.WriteLine(drp_subtitle.Text);
                    //Video Settings Tab
                    line.WriteLine(text_bitrate.Text);
                    line.WriteLine(text_filesize.Text);
                    line.WriteLine(slider_videoQuality.Value.ToString());
                    line.WriteLine(check_2PassEncode.CheckState.ToString());
                    line.WriteLine(check_DeInterlace.CheckState.ToString());
                    line.WriteLine(check_grayscale.CheckState.ToString());
                    line.WriteLine(drp_videoFramerate.Text);
                    line.WriteLine(Check_ChapterMarkers.CheckState.ToString());
                    line.WriteLine(CheckPixelRatio.CheckState.ToString());
                    line.WriteLine(check_turbo.CheckState.ToString());
                    line.WriteLine(check_largeFile.CheckState.ToString());
                    //Audio Settings Tab
                    line.WriteLine(drp_audioBitrate.Text);
                    line.WriteLine(drp_audioSampleRate.Text);
                    line.WriteLine(drp_audioChannels.Text);
                    line.WriteLine(drp_audioMixDown.Text);
                    //H264 Tab
                    line.WriteLine(CheckCRF.CheckState.ToString());
                    line.WriteLine(rtf_h264advanced.Text);
                    // close the stream
                    line.Close();
                    MessageBox.Show("Your profile has been sucessfully saved.", "Status", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
                }
                catch(Exception)
                {
                    MessageBox.Show("Unable to write to the file. Please make sure the location has the correct permissions for file writing.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Hand);
                }
                
            }
        }

        private void mnu_update_Click(object sender, EventArgs e)
        {
            Form Update = new frmUpdate();
            Update.ShowDialog();
        }

        private void mnu_exit_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        #endregion

        #region Tools Menu

        private void mnu_encode_Click(object sender, EventArgs e)
        {
            showQueue();
        }

        private void mnu_viewDVDdata_Click(object sender, EventArgs e)
        {
            dvdInfoWindow.Show();
        }

        private void mnu_options_Click(object sender, EventArgs e)
        {
            Form Options = new frmOptions();
            Options.ShowDialog();
        }

        #endregion

        #region Presets Menu

        private void mnu_preset_ipod133_Click(object sender, EventArgs e)
        {
            CheckPixelRatio.CheckState = CheckState.Unchecked;
            text_width.Text = "640";
            text_height.Text = "480";
            drp_videoEncoder.Text = "H.264 (iPod)";
            text_bitrate.Text = "1000";
            text_filesize.Text = "";
            slider_videoQuality.Value = 0;
            SliderValue.Text = "0%";
            drp_audioBitrate.Text = "160";
            rtf_h264advanced.Text = "";
            drp_crop.Text = "No Crop";
        }

        private void mnu_preset_ipod178_Click(object sender, EventArgs e)
        {
            CheckPixelRatio.CheckState = CheckState.Unchecked;
            text_width.Text = "640";
            text_height.Text = "352";
            drp_videoEncoder.Text = "H.264 (iPod)";
            text_bitrate.Text = "1000";
            text_filesize.Text = "";
            slider_videoQuality.Value = 0;
            SliderValue.Text = "0%";
            drp_audioBitrate.Text = "160";
            rtf_h264advanced.Text = "";
            drp_crop.Text = "No Crop";
        }

        private void mnu_preset_ipod235_Click(object sender, EventArgs e)
        {
            CheckPixelRatio.CheckState = CheckState.Unchecked;
            text_width.Text = "640";
            text_height.Text = "272";
            drp_videoEncoder.Text = "H.264 (iPod)";
            text_bitrate.Text = "1000";
            text_filesize.Text = "";
            slider_videoQuality.Value = 0;
            SliderValue.Text = "0%";
            drp_audioBitrate.Text = "160";
            rtf_h264advanced.Text = "";
            drp_crop.Text = "No Crop";
        }

        private void mnu_appleTv_Click(object sender, EventArgs e)
        {
            text_width.Text = "";
            text_height.Text = "";
            drp_videoEncoder.Text = "H.264";
            text_bitrate.Text = "3000";
            text_filesize.Text = "";
            slider_videoQuality.Value = 0;
            SliderValue.Text = "0%";
            drp_audioBitrate.Text = "160";
            CheckPixelRatio.CheckState = CheckState.Checked;
            drp_audioSampleRate.Text = "48";
            rtf_h264advanced.Text = "bframes=3:ref=1:subme=5:me=umh:no-fast-pskip=1:no-dct-decimate=1:trellis=2";
            drp_crop.Text = "No Crop";
            
        }

        private void mnu_presetPS3_Click(object sender, EventArgs e)
        {
            CheckPixelRatio.CheckState = CheckState.Unchecked;
            text_width.Text = "";
            text_height.Text = "";
            drp_videoEncoder.Text = "H.264";
            text_bitrate.Text = "3000";
            text_filesize.Text = "";
            slider_videoQuality.Value = 0;
            SliderValue.Text = "0%";
            drp_audioBitrate.Text = "160";
            CheckPixelRatio.CheckState = CheckState.Checked;
            drp_audioSampleRate.Text = "48";
            rtf_h264advanced.Text = "level=41";
            drp_crop.Text = "No Crop";
        }

        private void mnu_ProgramDefaultOptions_Click(object sender, EventArgs e)
        {
            //Source
            Properties.Settings.Default.DVDSource = text_source.Text;
            Properties.Settings.Default.DVDTitle = drp_dvdtitle.Text;
            Properties.Settings.Default.ChapterStart = drop_chapterStart.Text;
            Properties.Settings.Default.ChapterFinish = drop_chapterFinish.Text;
            //Destination
            Properties.Settings.Default.VideoDest = text_destination.Text;
            Properties.Settings.Default.VideoEncoder = drp_videoEncoder.Text;
            Properties.Settings.Default.AudioEncoder = drp_audioCodec.Text;
            Properties.Settings.Default.Width = text_width.Text;
            Properties.Settings.Default.Height = text_height.Text;
            //Picture Settings Tab
            Properties.Settings.Default.CroppingOption = drp_crop.Text;
            Properties.Settings.Default.CropTop = text_top.Text;
            Properties.Settings.Default.CropBottom = text_bottom.Text;
            Properties.Settings.Default.CropLeft = text_left.Text;
            Properties.Settings.Default.CropRight = text_right.Text;
            Properties.Settings.Default.Subtitles = drp_subtitle.Text;
            //Video Settings Tab
            Properties.Settings.Default.VideoBitrate = text_bitrate.Text;
            Properties.Settings.Default.VideoFilesize = text_filesize.Text;
            Properties.Settings.Default.VideoQuality = slider_videoQuality.Value;
            Properties.Settings.Default.TwoPass = check_2PassEncode.CheckState.ToString();
            Properties.Settings.Default.DeInterlace = check_DeInterlace.CheckState.ToString();
            Properties.Settings.Default.Grayscale = check_grayscale.CheckState.ToString();
            Properties.Settings.Default.Framerate = drp_videoFramerate.Text;
            Properties.Settings.Default.PixelRatio = CheckPixelRatio.CheckState.ToString();
            Properties.Settings.Default.turboFirstPass = check_turbo.CheckState.ToString();
            Properties.Settings.Default.largeFile = check_largeFile.CheckState.ToString();
            //Audio Settings Tab
            Properties.Settings.Default.AudioBitrate = drp_audioBitrate.Text;
            Properties.Settings.Default.AudioSampleRate = drp_audioSampleRate.Text;
            Properties.Settings.Default.AudioChannels = drp_audioChannels.Text;
            //H264 Tab
            Properties.Settings.Default.CRF = CheckCRF.CheckState.ToString();
            Properties.Settings.Default.H264 = rtf_h264advanced.Text;
            Properties.Settings.Default.Save();
        }

        #endregion

        #region Help Menu

        private void mnu_wiki_Click(object sender, EventArgs e)
        {
           Process.Start("http://handbrake.m0k.org/trac");
        }

        private void mnu_onlineDocs_Click(object sender, EventArgs e)
        {
            Process.Start("http://handbrake.m0k.org/?page_id=11");
        }

        private void mnu_faq_Click(object sender, EventArgs e)
        {
            Process.Start("http://handbrake.m0k.org/trac/wiki/WindowsGuiFaq");
        }

        private void mnu_homepage_Click(object sender, EventArgs e)
        {
           Process.Start("http://handbrake.m0k.org");
        }

        private void mnu_forum_Click(object sender, EventArgs e)
        {
            Process.Start("http://handbrake.m0k.org/forum");
        }

        private void mnu_about_Click(object sender, EventArgs e)
        {
			Form About = new frmAbout();
            About.ShowDialog();
        }

        #endregion

        #endregion

        // -------------------------------------------------------------- 
        // Buttons on the main Window
        // --------------------------------------------------------------
        private void btn_Browse_Click(object sender, EventArgs e)
        {
            
            String filename ="";
            text_source.Text = "";

            if (RadioDVD.Checked)
            {
                DVD_Open.ShowDialog();
                filename = DVD_Open.SelectedPath;
                if (filename != "")
                {
                    text_source.Text = filename;
                    Form frmReadDVD = new frmReadDVD(filename, this, dvdInfoWindow);
                    frmReadDVD.ShowDialog();
                }
            }
            else
            {
                ISO_Open.ShowDialog();
                filename = ISO_Open.FileName;
                if (filename != "")
                {
                    text_source.Text = filename;
                    Form frmReadDVD = new frmReadDVD(filename, this, dvdInfoWindow);
                    frmReadDVD.ShowDialog();
                }
            }  

            // Quick check to make sure some titles were found.
            if (filename != "")
            {
                if (drp_dvdtitle.Items.Count == 0)
                {
                    MessageBox.Show("No Title(s) found. Please make sure you have selected a valid, non-copy protected source.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Hand);
                }
            }
            else
            {
                text_source.Text = "Click 'Browse' to continue";
            }

        }

        private void btn_destBrowse_Click(object sender, EventArgs e)
        {
            // TODO: Need to write some code to check if there is a reasonable amount of disk space left.

            DVD_Save.ShowDialog();
            text_destination.Text = DVD_Save.FileName;

            if (Check_ChapterMarkers.Checked)
            {
                string destination = text_destination.Text;
                destination = destination.Replace(".mp4", ".m4v");
                text_destination.Text = destination;
            }
        }

        private void btn_h264Clear_Click(object sender, EventArgs e)
        {
            rtf_h264advanced.Text = "";
        }

        private void GenerateQuery_Click(object sender, EventArgs e)
        {
            String query = GenerateTheQuery();
            QueryEditorText.Text = query;
        }

        private void btn_ClearQuery_Click(object sender, EventArgs e)
        {
            QueryEditorText.Text = "";
        }

        private void btn_queue_Click(object sender, EventArgs e)
        {
            String query = GenerateTheQuery();
            queueWindow.list_queue.Items.Add(query);
            queueWindow.Show();
        }

        private void showQueue()
        {
            queueWindow.Show();
        }

        private void btn_encode_Click(object sender, EventArgs e)
        {
            String query = "";
 
            if (QueryEditorText.Text == "")
            {
                query = GenerateTheQuery();
            }
            else
            {
                query = QueryEditorText.Text;
            }

            hbProc = new System.Diagnostics.Process();
            hbProc.StartInfo.FileName = "hbcli.exe";
            hbProc.StartInfo.Arguments = query;
            hbProc.StartInfo.UseShellExecute = false;
            hbProc.Start();

            // Set the process Priority
            string priority = Properties.Settings.Default.processPriority;
            switch (priority)
            {
                case "Realtime":
                    hbProc.PriorityClass = ProcessPriorityClass.RealTime;
                    break;
                case "High":
                    hbProc.PriorityClass = ProcessPriorityClass.High;
                    break;
                case "Above Normal":
                    hbProc.PriorityClass = ProcessPriorityClass.AboveNormal;
                    break;
                case "Normal":
                    hbProc.PriorityClass = ProcessPriorityClass.Normal;
                    break;
                case "Low":
                    hbProc.PriorityClass = ProcessPriorityClass.Idle;
                    break;
                default:
                    hbProc.PriorityClass = ProcessPriorityClass.BelowNormal;
                    break;
            }

            ThreadPool.QueueUserWorkItem(procMonitor);
            // TODO: Need to write a bit of code here to do process monitoring.
        }

        private void procMonitor(object state)
        {
            MessageBox.Show("The encode process has now started.", "Status", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
            hbProc.WaitForExit();
            hbProc.Close();
            hbProc.Dispose();
            MessageBox.Show("The encode process has now ended.", "Status", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
        }


        //---------------------------------------------------
        //  Items that require actions on frmMain
        //---------------------------------------------------

        private void drop_chapterStart_SelectedIndexChanged(object sender, EventArgs e)
        {
            QueryEditorText.Text = "";
            if ((drop_chapterFinish.Text != "Auto") && (drop_chapterStart.Text != "Auto"))
            {
                try
                {
                    int chapterFinish = int.Parse(drop_chapterFinish.Text);
                    int chapterStart = int.Parse(drop_chapterStart.Text);

                    if (chapterFinish < chapterStart)
                    {
                        MessageBox.Show("Invalid Chapter Range! - Final chapter can not be smaller than the starting chapter.", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    }
                }
                catch (Exception)
                {
                    MessageBox.Show("Invalid Character Entered!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Hand);
                }
            }

            
        }

        private void drop_chapterFinish_SelectedIndexChanged(object sender, EventArgs e)
        {
            QueryEditorText.Text = "";
            if ((drop_chapterFinish.Text != "Auto") && (drop_chapterStart.Text != "Auto"))
            {
                try
                {
                    int chapterFinish = int.Parse(drop_chapterFinish.Text);
                    int chapterStart = int.Parse(drop_chapterStart.Text);

                    if (chapterFinish < chapterStart)
                    {
                        MessageBox.Show("Invalid Chapter Range! - Start chapter can not be larger than the Final chapter.", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    }
                }
                catch (Exception)
                {
                    MessageBox.Show("Invalid Character Entered!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Hand);
                }
            }
        }

        private void text_bitrate_TextChanged(object sender, EventArgs e)
        {
            text_filesize.Text = "";
            slider_videoQuality.Value = 0;
            SliderValue.Text = "0%";
            CheckCRF.CheckState = CheckState.Unchecked;
        }

        private void text_filesize_TextChanged(object sender, EventArgs e)
        {
            text_bitrate.Text = "";
            slider_videoQuality.Value = 0;
            SliderValue.Text = "0%";
            CheckCRF.CheckState = CheckState.Unchecked;
        }

        private void slider_videoQuality_Scroll(object sender, EventArgs e)
        {
            SliderValue.Text = slider_videoQuality.Value.ToString() + "%";
            text_bitrate.Text = "";
            text_filesize.Text = "";
        }

        private void label_h264_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            Process.Start("http://handbrake.m0k.org/trac/wiki/x264Options");
        }

        private void text_width_TextChanged(object sender, EventArgs e)
        {
            try
            {
                if (CheckPixelRatio.Checked) {
                    text_width.Text = "";
                } else {
                    if ((int.Parse(text_width.Text) % 16) != 0){
                        text_width.BackColor = Color.LightCoral;
                    }else {
                        text_width.BackColor = Color.LightGreen;
                    }
                }

                // There is a bug here *******************************************************************
                if (!lbl_Aspect.Text.Equals("Select a Title")){
                    int height = int.Parse(text_width.Text) / int.Parse(lbl_Aspect.Text);
                    MessageBox.Show("test");
                    int mod16 = height % 16;
                    height = height - mod16;
                    text_height.Text = height.ToString();
                }
               
            } catch(Exception){
                // No need to alert the user if there is a problem here.
            }
        }

        private void text_height_TextChanged(object sender, EventArgs e)
        {
            try
            {
                if (CheckPixelRatio.Checked)
                {
                    text_height.Text = "";
                }
                else
                {
                    if ((int.Parse(text_height.Text) % 16) != 0)
                    {
                        text_height.BackColor = Color.LightCoral;
                    }
                    else
                    {
                        text_height.BackColor = Color.LightGreen;
                    }
                }
            } catch(Exception){
                // No need to alert the user.
            }
        }

        private void drp_crop_SelectedIndexChanged(object sender, EventArgs e)
        {
            if ((string)drp_crop.SelectedItem == "Manual")
            {
            text_left.Enabled = true;
            text_right.Enabled = true;
            text_top.Enabled = true;
            text_bottom.Enabled = true;
            }

            if ((string)drp_crop.SelectedItem == "Auto Crop")
            {
                text_left.Enabled = false;
                text_right.Enabled = false;
                text_top.Enabled = false;
                text_bottom.Enabled = false;
                text_left.Text = "";
                text_right.Text = "";
                text_top.Text = "";
                text_bottom.Text = "";

                if (lbl_RecomendedCrop.Text != "Select a Title")
                {
                    string[] temp = new string[4];
                    temp = lbl_RecomendedCrop.Text.Split('/');
                    text_left.Text = temp[2];
                    text_right.Text = temp[3];
                    text_top.Text = temp[0];
                    text_bottom.Text = temp[1];
                }
            }

            if ((string)drp_crop.SelectedItem == "No Crop")
            {
                text_left.Enabled = false;
                text_right.Enabled = false;
                text_top.Enabled = false;
                text_bottom.Enabled = false;
                text_left.Text = "0";
                text_right.Text = "0";
                text_top.Text = "0";
                text_bottom.Text = "0";

            }
        }
        
        private void CheckPixelRatio_CheckedChanged(object sender, EventArgs e)
        {
            text_width.Text = "";
            text_height.Text = "";
            text_width.BackColor = Color.White;
            text_height.BackColor = Color.White;
        }

        private void drp_dvdtitle_Click(object sender, EventArgs e)
        {
            if (drp_dvdtitle.Items.Count == 1)
            {
                MessageBox.Show("There are no titles to select. Please scan the DVD by clicking the 'browse' button above before trying to select a title.", "Alert", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
            }
        }

        private void drp_audioCodec_SelectedIndexChanged(object sender, EventArgs e)
        {

            //CLI Audio mixdown Names: mono stereo dpl1 dpl2 6ch

            drp_audioMixDown.Items.Clear();

            if (drp_audioCodec.Text == "AAC")
            {
                drp_audioMixDown.Items.Clear();
                drp_audioMixDown.Items.Add("Mono");
                drp_audioMixDown.Items.Add("Stereo");
                drp_audioMixDown.Items.Add("Dolby Surround");
                drp_audioMixDown.Items.Add("Dolby Pro Logic II");
                drp_audioMixDown.Items.Add("6 Channel Discrete");
                
                drp_audioBitrate.Items.Clear();
                drp_audioBitrate.Items.Add("32");
                drp_audioBitrate.Items.Add("40");
                drp_audioBitrate.Items.Add("48");
                drp_audioBitrate.Items.Add("56");
                drp_audioBitrate.Items.Add("64");
                drp_audioBitrate.Items.Add("80");
                drp_audioBitrate.Items.Add("86");
                drp_audioBitrate.Items.Add("112");
                drp_audioBitrate.Items.Add("128");
                drp_audioBitrate.Items.Add("160");

            }
            else
            {
                drp_audioMixDown.Items.Clear();
                drp_audioMixDown.Items.Add("Stereo");
                drp_audioMixDown.Items.Add("Dolby Surround");
                drp_audioMixDown.Items.Add("Dolby Pro Logic II");

                drp_audioBitrate.Items.Clear();
                drp_audioBitrate.Items.Add("32");
                drp_audioBitrate.Items.Add("40");
                drp_audioBitrate.Items.Add("48");
                drp_audioBitrate.Items.Add("56");
                drp_audioBitrate.Items.Add("64");
                drp_audioBitrate.Items.Add("80");
                drp_audioBitrate.Items.Add("86");
                drp_audioBitrate.Items.Add("112");
                drp_audioBitrate.Items.Add("128");
                drp_audioBitrate.Items.Add("160");
                drp_audioBitrate.Items.Add("192");
                drp_audioBitrate.Items.Add("224");
                drp_audioBitrate.Items.Add("256");
                drp_audioBitrate.Items.Add("320");
                drp_audioBitrate.Items.Add("384");
            }
        }

        private void drp_audioMixDown_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (drp_audioCodec.Text == "AAC")
            {
                if (drp_audioMixDown.Text == "6 Channel Discrete")
                {

                    drp_audioBitrate.Items.Clear();
                    drp_audioBitrate.Items.Add("32");
                    drp_audioBitrate.Items.Add("40");
                    drp_audioBitrate.Items.Add("48");
                    drp_audioBitrate.Items.Add("56");
                    drp_audioBitrate.Items.Add("64");
                    drp_audioBitrate.Items.Add("80");
                    drp_audioBitrate.Items.Add("86");
                    drp_audioBitrate.Items.Add("112");
                    drp_audioBitrate.Items.Add("128");
                    drp_audioBitrate.Items.Add("160");
                    drp_audioBitrate.Items.Add("192");
                    drp_audioBitrate.Items.Add("224");
                    drp_audioBitrate.Items.Add("256");
                    drp_audioBitrate.Items.Add("320");
                    drp_audioBitrate.Items.Add("384");
                }
            }
        }

        private void Check_ChapterMarkers_CheckedChanged(object sender, EventArgs e)
        {
            if (Check_ChapterMarkers.Checked)
            {
                string destination = text_destination.Text;
                destination = destination.Replace(".mp4", ".m4v");
                text_destination.Text = destination;
            }
        }

        private void check_largeFile_CheckedChanged(object sender, EventArgs e)
        {
            if (!text_destination.Text.Contains(".mp4"))
            {
                MessageBox.Show("This option is only compatible with the mp4 file container.", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                check_largeFile.CheckState = CheckState.Unchecked;
            }
        }

        private void check_turbo_CheckedChanged(object sender, EventArgs e)
        {
            if (!drp_videoEncoder.Text.Contains("H.264"))
            {
                MessageBox.Show("This option is only compatible with the H.264 encoder's", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                check_turbo.CheckState = CheckState.Unchecked;
            }
        }

        private void drp_videoEncoder_SelectedIndexChanged(object sender, EventArgs e)
        {
            //Turn off some options which are H.264 only when the user selects a non h.264 encoder
            if (!drp_videoEncoder.Text.Contains("H.264"))
            {
                check_turbo.CheckState = CheckState.Unchecked;
                CheckCRF.CheckState = CheckState.Unchecked;
            }
        }

        private void CheckCRF_CheckedChanged(object sender, EventArgs e)
        {
            if (slider_videoQuality.Value == 0)
            {
                MessageBox.Show("This option is can only be used with the 'Video Quality' slider.", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                CheckCRF.CheckState = CheckState.Unchecked;
            }
        }

        public void setStreamReader(Parsing.DVD dvd)
        {
            this.thisDVD = dvd;
        }

        private void drp_dvdtitle_SelectedIndexChanged(object sender, EventArgs e)
        {
            // Reset some values on the form
            lbl_Aspect.Text = "Select a Title";
            lbl_RecomendedCrop.Text = "Select a Title";
            drop_chapterStart.Items.Clear();
            drop_chapterFinish.Items.Clear();
            QueryEditorText.Text = "";

            // If the dropdown is set to automatic nothing else needs to be done.
            // Otheriwse if its not, title data has to be loased from parsing.
            if (drp_dvdtitle.Text != "Automatic")
            {
                Parsing.Title selectedTitle = drp_dvdtitle.SelectedItem as Parsing.Title;
                lbl_Aspect.Text = selectedTitle.AspectRatio.ToString();
                lbl_RecomendedCrop.Text = string.Format("{0}/{1}/{2}/{3}", selectedTitle.AutoCropDimensions[0], selectedTitle.AutoCropDimensions[1], selectedTitle.AutoCropDimensions[2], selectedTitle.AutoCropDimensions[3]);

                drop_chapterStart.Items.Clear();
                drop_chapterStart.Items.AddRange(selectedTitle.Chapters.ToArray());
                if (drop_chapterStart.Items.Count > 0)
                {
                    drop_chapterStart.Text = drop_chapterStart.Items[0].ToString();
                }

                drop_chapterFinish.Items.Clear();
                drop_chapterFinish.Items.AddRange(selectedTitle.Chapters.ToArray());
                if (drop_chapterFinish.Items.Count > 0)
                {
                    drop_chapterFinish.Text = drop_chapterFinish.Items[drop_chapterFinish.Items.Count - 1].ToString();
                }

                drp_audioChannels.Items.Clear();
                drp_audioChannels.Items.AddRange(selectedTitle.AudioTracks.ToArray());
                if (drp_audioChannels.Items.Count > 0)
                {
                    drp_audioChannels.Text = drp_audioChannels.Items[0].ToString();
                }

                drp_subtitle.Items.Clear();
                drp_subtitle.Items.AddRange(selectedTitle.Subtitles.ToArray());
                if (drp_subtitle.Items.Count > 0)
                {
                    drp_subtitle.Text = drp_subtitle.Items[0].ToString();
                }
            }
        } 

        /// <summary>
        /// The Query Generation Function
        /// This function was imported from old vb.net version of this application.
        /// It could probably do with being cleaned up a good deal at some point
        /// </summary>
        /// <returns></returns>
        public string GenerateTheQuery()
        {
            string source = text_source.Text;
            string dvdTitle = drp_dvdtitle.Text;
            string chapterStart = drop_chapterStart.Text;
            string chapterFinish = drop_chapterFinish.Text;
            int totalChapters = drop_chapterFinish.Items.Count - 1;
            string dvdChapter = "";

            if (source ==  "")
                MessageBox.Show("No Source has been selected.", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
            else
            {
                source = " -i " + '"' + source+ '"'; //'"'+
            }

            if (dvdTitle ==  "Automatic")
                dvdTitle = "";
            else
            {
                string[] titleInfo = dvdTitle.Split(' ');
                dvdTitle = " -t "+ titleInfo[0];
            }

            if (chapterFinish.Equals("Auto") && chapterStart.Equals("Auto"))
                dvdChapter = "";
            else if (chapterFinish == chapterStart)
                dvdChapter = " -c " + chapterStart;
            else
                dvdChapter = " -c " + chapterStart + "-" + chapterFinish;

            string querySource = source+ dvdTitle+ dvdChapter;
            // ----------------------------------------------------------------------

            // Destination

            string destination = text_destination.Text;
            string videoEncoder = drp_videoEncoder.Text;
            string audioEncoder = drp_audioCodec.Text;
            string width = text_width.Text;
            string height = text_height.Text;

            if (destination ==  "")
                MessageBox.Show("No destination has been selected.", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
            else
                destination = " -o " + '"' + destination + '"'; //'"'+ 


            switch (videoEncoder)
            {
                case "Mpeg 4":
                    videoEncoder = " -e ffmpeg";
                    break;
                case "Xvid":
                    videoEncoder = " -e xvid";
                    break;
                case "H.264":
                    videoEncoder = " -e x264";
                    break;
                case "H.264 Baseline 1.3":
                    videoEncoder = " -e x264b13";
                    break;
                case "H.264 (iPod)":
                    videoEncoder = " -e x264b30";
                    break;
                default:
                    videoEncoder = " -e x264";
                    break;
            }
           
            switch (audioEncoder)
            {
                case "AAC":
                    audioEncoder = " -E faac";
                    break;
                case "MP3":
                    audioEncoder = " -E lame";
                    break;
                case "Vorbis":
                    audioEncoder = " -E vorbis";
                    break;
                case "AC3":
                    audioEncoder = " -E ac3";
                    break;
                default:
                    audioEncoder = " -E faac";
                    break;
            }

            if (width !=  "")
                width = " -w "+ width;
            

            if (height !=  "")
                height = " -l "+ height;
            

            string queryDestination = destination+ videoEncoder+ audioEncoder+ width+ height;
            // ----------------------------------------------------------------------

            // Picture Settings Tab

            string cropSetting = drp_crop.Text;
            string cropTop = text_top.Text;
            string cropBottom = text_bottom.Text;
            string cropLeft = text_left.Text;
            string cropRight = text_right.Text;
            string subtitles = drp_subtitle.Text;
            string cropOut = "";
            // Returns Crop Query

            if (cropSetting == "Auto Crop")
                cropOut = "";
            else if (cropSetting == "No Crop")
                cropOut = " --crop 0:0:0:0 ";
            else
                cropOut = " --crop " + cropTop + ":" + cropBottom + ":" + cropLeft + ":" + cropRight;

            if (subtitles ==  "None")
                subtitles = "";
            else if (subtitles ==  "")
                subtitles = "";
            else
            {
                string[] tempSub;
                tempSub = subtitles.Split(' ');
                subtitles = " -s "+ tempSub[0];
            }

            string queryPictureSettings = cropOut+ subtitles;
            // ----------------------------------------------------------------------

            // Video Settings Tab

            string videoBitrate = text_bitrate.Text;
            string videoFilesize = text_filesize.Text;
            int videoQuality = slider_videoQuality.Value;
            string vidQSetting = "";
            string twoPassEncoding = "";
            string deinterlace = "";
            string grayscale = "";
            string videoFramerate = drp_videoFramerate.Text;
            string pixelRatio = "";
            string ChapterMarkers = "";
            string turboH264 = "";
            string largeFile = "";

            if (videoBitrate !=  "")
                videoBitrate = " -b "+ videoBitrate;

            if (videoFilesize !=  "")
                videoFilesize = " -S "+ videoFilesize;

            // Video Quality Setting

            if ((videoQuality ==  0))
                vidQSetting = "";
            else
            {
                videoQuality = videoQuality/ 100;
                if (videoQuality ==  1)
                {
                    vidQSetting = "1.0";
                }

                vidQSetting = " -q " + videoQuality.ToString();
            }

            if (check_2PassEncode.Checked)
                twoPassEncoding = " -2 ";

            if (check_DeInterlace.Checked)
                deinterlace = " -d ";

            if (check_grayscale.Checked)
                grayscale = " -g ";

            if (videoFramerate ==  "Automatic")
                videoFramerate = "";
            else
                videoFramerate = " -r "+ videoFramerate;

            if (CheckPixelRatio.Checked)
                pixelRatio = " -p ";

            if (Check_ChapterMarkers.Checked)
                ChapterMarkers = " -m ";

            if (check_turbo.Checked)
                turboH264 = " -T ";

            if (check_largeFile.Checked)
                largeFile = " -4 ";

            string queryVideoSettings = videoBitrate + videoFilesize + vidQSetting + twoPassEncoding + deinterlace + grayscale + videoFramerate + pixelRatio + ChapterMarkers + turboH264 + largeFile;
            // ----------------------------------------------------------------------

            // Audio Settings Tab

            string audioBitrate = drp_audioBitrate.Text;
            string audioSampleRate = drp_audioSampleRate.Text;
            string audioChannels = drp_audioChannels.Text;
            string Mixdown = drp_audioMixDown.Text;
            string SixChannelAudio = "";

            if (audioBitrate !=  "")
                audioBitrate = " -B "+ audioBitrate;

            if (audioSampleRate !=  "")
                audioSampleRate = " -R "+ audioSampleRate;

            if (audioChannels ==  "Automatic")
                audioChannels = "";
            else if (audioChannels ==  "")
                audioChannels = "";
            else
            {
                string[] tempSub;
                tempSub = audioChannels.Split(' ');
                audioChannels = " -a "+ tempSub[0];
            }

            switch (Mixdown)
            {
                case "Automatic":
                    Mixdown = "";
                    break;
                case "Mono":
                    Mixdown = "mono";
                    break;
                case "Stereo":
                    Mixdown = "stereo";
                    break;
                case "Dolby Surround":
                    Mixdown = "dpl1";
                    break;
                case "Dolby Pro Logic II":
                    Mixdown = "dpl2";
                    break;
                case "6 Channel Discrete":
                    Mixdown = "6ch";
                    break;
                default:
                    Mixdown = "stero";
                    break;
            }

            if (Mixdown !=  "")
                SixChannelAudio = " -6 "+ Mixdown;
            else
                SixChannelAudio = "";

            string queryAudioSettings = audioBitrate+ audioSampleRate+ audioChannels+ SixChannelAudio;
            // ----------------------------------------------------------------------

            //  H.264 Tab

            string CRF = CheckCRF.CheckState.ToString();
            string h264Advanced = rtf_h264advanced.Text;
            if ((CRF ==  "1"))
                CRF = " -Q ";
            else
                CRF = "";

            if ((h264Advanced ==  ""))
                h264Advanced = "";
            else
                h264Advanced = " -x "+ h264Advanced;
    

            string h264Settings = CRF+ h264Advanced;
            // ----------------------------------------------------------------------

            // Processors (Program Settings)

            string processors = Properties.Settings.Default.Processors;
            //  Number of Processors Handler

            if (processors ==  "Automatic")
                processors = "";
            else
                processors = " -C "+ processors+ " ";


            string queryAdvancedSettings = processors;
            // ----------------------------------------------------------------------

            //  Verbose option (Program Settings)

            string verbose = "";
            if (Properties.Settings.Default.verbose ==  "Checked")
                verbose = " -v ";

            // ----------------------------------------------------------------------

            return querySource+ queryDestination+ queryPictureSettings+ queryVideoSettings+ h264Settings+ queryAudioSettings+ queryAdvancedSettings+ verbose;
        }

        // This is the END of the road ------------------------------------------------------------------------------
    }
}