/*  Common.cs $
 	
 	   This file is part of the HandBrake source code.
 	   Homepage: <http://handbrake.m0k.org/>.
 	   It may be used under the terms of the GNU General Public License. */

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Globalization;
using System.IO;
using System.Drawing;

namespace Handbrake.Functions
{
    class Common
    {
        /*
         * Checks for updates and returns "true" boolean if one exists.
         */
        public Boolean updateCheck()
        {
            try
            {
                Functions.RssReader rssRead = new Functions.RssReader();
                string build = rssRead.build();

                int latest = int.Parse(build);
                int current = Properties.Settings.Default.hb_build;
                int skip = Properties.Settings.Default.skipversion;

                if (latest == skip)
                {
                    return false;
                }
                else
                {
                    Boolean update = (latest > current);
                    return update;
                }
            }
            catch (Exception exc)
            {
                MessageBox.Show(exc.ToString());
                return false;
            }
        }
        
        /*
         * Function which generates the filename and path automatically based on the Source Name, DVD title and DVD Chapters
         */
        public void autoName(frmMain mainWindow)
        {
            if (Properties.Settings.Default.autoNaming == "Checked")
            {
                if (mainWindow.drp_dvdtitle.Text != "Automatic")
                {
                    string source = mainWindow.text_source.Text;
                    string[] sourceName = source.Split('\\');
                    source = sourceName[sourceName.Length - 1].Replace(".iso", "").Replace(".mpg", "").Replace(".ts", "").Replace(".ps", "");

                    string title = mainWindow.drp_dvdtitle.Text;
                    string[] titlesplit = title.Split(' ');
                    title = titlesplit[0];

                    string cs = mainWindow.drop_chapterStart.Text;
                    string cf = mainWindow.drop_chapterFinish.Text;

                    if (title == "Automatic")
                        title = "";
                    if (cs == "Auto")
                        cs = "";
                    if (cf == "Auto")
                        cf = "";

                    string dash = "";
                    if (cf != "Auto")
                        dash = "-";

                    if (!mainWindow.text_destination.Text.Contains("\\"))
                    {
                        string filePath = "";
                        if (Properties.Settings.Default.autoNamePath.Trim() != "")
                        {
                            if (Properties.Settings.Default.autoNamePath.Trim() != "Click 'Browse' to set the default location")
                                filePath = Properties.Settings.Default.autoNamePath + "\\";
                        } 
                        mainWindow.text_destination.Text = filePath + source + "_T" + title + "_C" + cs + dash + cf + ".mp4";
                    }
                    else
                    {
                        string dest = mainWindow.text_destination.Text;

                        string[] destName = dest.Split('\\');


                        string[] extension = dest.Split('.');
                        string ext = extension[extension.Length - 1];

                        destName[destName.Length - 1] = source + "_T" + title + "_C" + cs + dash + cf + "." + ext;

                        string fullDest = "";
                        foreach (string part in destName)
                        {
                            if (fullDest != "")
                                fullDest = fullDest + "\\" + part;
                            else
                                fullDest = fullDest + part;
                        }

                        mainWindow.text_destination.Text = fullDest;
                    }
                }
            }
        }

        /*
         * This function takes in a Query which has been parsed by QueryParser and sets up the GUI.
         */
        public void presetLoader(frmMain mainWindow, Functions.QueryParser presetQuery, string name)
        {
            // ---------------------------
            // Setup the GUI
            // ---------------------------

            // Source tab
            #region source
            // Reset some vaules to stock first to prevent errors.
            mainWindow.check_iPodAtom.CheckState = CheckState.Unchecked;

            // Now load all the new settings onto the main window
            if (presetQuery.Source != "")
                mainWindow.text_source.Text = presetQuery.Source;

            if (presetQuery.DVDTitle != 0)
                mainWindow.drp_dvdtitle.Text = presetQuery.DVDTitle.ToString();

            if (presetQuery.DVDChapterStart != 0)
                mainWindow.drop_chapterStart.Text = presetQuery.DVDChapterStart.ToString();

            if (presetQuery.DVDChapterFinish != 0)
                mainWindow.drop_chapterFinish.Text = presetQuery.DVDChapterFinish.ToString();

            if (presetQuery.Format != "")
            {
                string destination = mainWindow.text_destination.Text;
                destination = destination.Replace(".mp4", "." + presetQuery.Format);
                destination = destination.Replace(".m4v", "." + presetQuery.Format);
                destination = destination.Replace(".avi", "." + presetQuery.Format);
                destination = destination.Replace(".mkv", "." + presetQuery.Format);
                destination = destination.Replace(".ogm", "." + presetQuery.Format);
                mainWindow.text_destination.Text = destination;
            }

            #endregion

            // Destination tab
            #region destination

            if (presetQuery.Destination != "")
                mainWindow.text_destination.Text = presetQuery.Destination;

            mainWindow.drp_videoEncoder.Text = presetQuery.VideoEncoder;
            mainWindow.drp_audioCodec.Text = presetQuery.AudioEncoder;

            if (presetQuery.AudioEncoder == "AAC + AC3")
            {
                mainWindow.text_destination.Text = mainWindow.text_destination.Text.Replace(".mp4", ".m4v");
            }

            if (presetQuery.IpodAtom == true)
                mainWindow.check_iPodAtom.CheckState = CheckState.Checked;
            else
                mainWindow.check_iPodAtom.CheckState = CheckState.Unchecked;

            if (presetQuery.OptimizeMP4 == true)
                mainWindow.check_optimiseMP4.CheckState = CheckState.Checked;
            else
                mainWindow.check_optimiseMP4.CheckState = CheckState.Unchecked;

            #endregion  

            // Picture Settings Tab
            #region Picture
            mainWindow.drp_crop.SelectedIndex = 1;
            mainWindow.text_top.Text = presetQuery.CropTop;
            mainWindow.text_bottom.Text = presetQuery.CropBottom;
            mainWindow.text_left.Text = presetQuery.CropLeft;
            mainWindow.text_right.Text = presetQuery.CropRight;

            mainWindow.drp_deInterlace_option.Text = presetQuery.DeInterlace;
            mainWindow.drp_deNoise.Text = presetQuery.DeNoise;

            if (presetQuery.DeTelecine == true)
                mainWindow.check_detelecine.CheckState = CheckState.Checked;
            else
                mainWindow.check_detelecine.CheckState = CheckState.Unchecked;


            if (presetQuery.DeBlock == true)
                mainWindow.check_deblock.CheckState = CheckState.Checked;
            else
                mainWindow.check_deblock.CheckState = CheckState.Unchecked;


            if (presetQuery.Anamorphic == true)
                mainWindow.CheckPixelRatio.CheckState = CheckState.Checked;
            else
                mainWindow.CheckPixelRatio.CheckState = CheckState.Unchecked;

            if (presetQuery.LooseAnamorphic == true)
                mainWindow.check_lAnamorphic.CheckState = CheckState.Checked;
            else
                mainWindow.check_lAnamorphic.CheckState = CheckState.Unchecked;

            if (presetQuery.Width != 0)
                mainWindow.text_width.Text = presetQuery.Width.ToString();
            else
            {
                mainWindow.text_width.Text = "";
                mainWindow.text_width.BackColor = Color.White;
            }

            if (presetQuery.Height != 0)
                mainWindow.text_height.Text = presetQuery.Height.ToString();
            else
            {
                mainWindow.text_height.Text = "";
                mainWindow.text_height.BackColor = Color.White;
            }

            if (presetQuery.VFR == true)
                mainWindow.check_vfr.CheckState = CheckState.Checked;
            else
                mainWindow.check_vfr.CheckState = CheckState.Unchecked;
            #endregion

            // Video Settings Tab
            #region video
            mainWindow.text_bitrate.Text = presetQuery.AverageVideoBitrate;
            mainWindow.text_filesize.Text = presetQuery.VideoTargetSize;
            mainWindow.slider_videoQuality.Value = presetQuery.VideoQuality;
            if (mainWindow.slider_videoQuality.Value != 0)
            {
                int ql = presetQuery.VideoQuality;
                mainWindow.SliderValue.Text = ql.ToString() + "%";
            }

            if (presetQuery.TwoPass == true)
                mainWindow.check_2PassEncode.CheckState = CheckState.Checked;
            else
                mainWindow.check_2PassEncode.CheckState = CheckState.Unchecked;

            if (presetQuery.Grayscale == true)
                mainWindow.check_grayscale.CheckState = CheckState.Checked;
            else
                mainWindow.check_grayscale.CheckState = CheckState.Unchecked;

            mainWindow.drp_videoFramerate.Text = presetQuery.VideoFramerate;

            if (presetQuery.TurboFirstPass == true)
                mainWindow.check_turbo.CheckState = CheckState.Checked;
            else
                mainWindow.check_turbo.CheckState = CheckState.Unchecked;

            if (presetQuery.LargeMP4 == true)
                mainWindow.check_largeFile.CheckState = CheckState.Checked;
            else
                mainWindow.check_largeFile.CheckState = CheckState.Unchecked;

            

            #endregion

            // Chapter Markers Tab
            #region Chapter Markers

            if (presetQuery.ChapterMarkers == true)
            {
                mainWindow.Check_ChapterMarkers.CheckState = CheckState.Checked;
                mainWindow.text_destination.Text = mainWindow.text_destination.Text.Replace(".mp4", ".m4v");
            }
            else
                mainWindow.Check_ChapterMarkers.CheckState = CheckState.Unchecked;

            #endregion

            // Audio Settings Tab
            #region Audio
            mainWindow.drp_audioBitrate.Text = presetQuery.AudioBitrate;
            mainWindow.drp_audioSampleRate.Text = presetQuery.AudioSampleBitrate;
            mainWindow.drp_track1Audio.Text = presetQuery.AudioTrack1;
            mainWindow.drp_track2Audio.Text = presetQuery.AudioTrack2;
            mainWindow.drp_audioMixDown.Text = presetQuery.AudioTrackMix;
            mainWindow.drp_subtitle.Text = presetQuery.Subtitles;

            if (presetQuery.ForcedSubtitles == true)
            {
                mainWindow.check_forced.CheckState = CheckState.Checked;
                mainWindow.check_forced.Enabled = true;
            }
            else
                mainWindow.check_forced.CheckState = CheckState.Unchecked;

            // Dynamic Range Compression (Should be a float but we use double for ease)
            double value = presetQuery.DRC;
            if (value > 0)
                value = value - 10;
            mainWindow.slider_drc.Value = int.Parse(value.ToString());

            double actualValue = presetQuery.DRC / 10;
            mainWindow.lbl_drc.Text = actualValue.ToString();


            #endregion

            // H264 Tab & Preset Name
            #region other
            mainWindow.rtf_h264advanced.Text = presetQuery.H264Query;

            // Set the preset name
            mainWindow.groupBox_output.Text = "Output Settings (Preset: " + name + ")";
            #endregion
        }

        /*
         * This takes all the widgets on frmMain
         */
        public string GenerateTheQuery(frmMain mainWindow)
        {

            // Source tab
            #region source
            string source = mainWindow.text_source.Text;
            string dvdTitle = mainWindow.drp_dvdtitle.Text;
            string chapterStart = mainWindow.drop_chapterStart.Text;
            string chapterFinish = mainWindow.drop_chapterFinish.Text;
            int totalChapters = mainWindow.drop_chapterFinish.Items.Count - 1;
            string dvdChapter = "";

            if ((source != "") || (source != "Click 'Browse' to continue"))
                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;
            #endregion

            // Destination tab
            #region Destination

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

            if (destination != "")
                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 (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;
                case "AAC + AC3":
                    audioEncoder = " -E aac+ac3";
                    break;
                default:
                    audioEncoder = " -E faac";
                    break;
            }

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


            if (height == "Auto")
            {
                height = "";
            }
            else if (height != "")
            {
                height = " -l " + height;
            }


            string queryDestination = destination + videoEncoder + audioEncoder + width + height;
            #endregion

            // Picture Settings Tab
            #region Picture Settings Tab

            string cropSetting = mainWindow.drp_crop.Text;
            string cropTop = mainWindow.text_top.Text;
            string cropBottom = mainWindow.text_bottom.Text;
            string cropLeft = mainWindow.text_left.Text;
            string cropRight = mainWindow.text_right.Text;
            string cropOut = "";
            string deInterlace_Option = mainWindow.drp_deInterlace_option.Text;
            string deinterlace = "";
            string grayscale = "";
            string pixelRatio = "";
            string vfr = "";
            string deblock = "";
            string detelecine = "";
            string lanamorphic = "";



            if (cropSetting == "Automatic")
                cropOut = "";
            else if (cropSetting == "No Crop")
                cropOut = " --crop 0:0:0:0 ";
            else
            {
                if (mainWindow.text_top.Text == "")
                    cropTop = "0";
                if (mainWindow.text_bottom.Text == "")
                    cropBottom = "0";
                if (mainWindow.text_left.Text == "")
                    cropLeft = "0";
                if (mainWindow.text_right.Text == "")
                    cropRight = "0";

                cropOut = " --crop " + cropTop + ":" + cropBottom + ":" + cropLeft + ":" + cropRight;
            }

            switch (deInterlace_Option)
            {
                case "None":
                    deinterlace = "";
                    break;
                case "Fast":
                    deinterlace = " --deinterlace=fast";
                    break;
                case "Slow":
                    deinterlace = " --deinterlace=slow";
                    break;
                case "Slower":
                    deinterlace = " --deinterlace=slower";
                    break;
                case "Slowest":
                    deinterlace = " --deinterlace=slowest";
                    break;
                default:
                    deinterlace = "";
                    break;
            }

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

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

            if (mainWindow.check_deblock.Checked)
                deblock = " --deblock";

            if (mainWindow.check_detelecine.Checked)
                detelecine = " --detelecine";

            if (mainWindow.check_vfr.Checked)
                vfr = " -V ";

            if (mainWindow.check_lAnamorphic.Checked)
                lanamorphic = " -P ";

            string queryPictureSettings = cropOut + deinterlace + deblock + detelecine + vfr + grayscale + pixelRatio + lanamorphic;
            #endregion

            // Video Settings Tab
            #region Video Settings Tab

            string videoBitrate = mainWindow.text_bitrate.Text;
            string videoFilesize = mainWindow.text_filesize.Text;
            double videoQuality = mainWindow.slider_videoQuality.Value;
            string vidQSetting = "";
            string twoPassEncoding = "";
            string videoFramerate = mainWindow.drp_videoFramerate.Text;
            string vid_frame_rate = "";
            string turboH264 = "";
            string largeFile = "";
            string denoise = "";
            string ipodAtom = "";
            string optimizeMP4 = "";

            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(new CultureInfo("en-US"));
            }

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

            if (videoFramerate == "Automatic")
                vid_frame_rate = "";
            else
            {
                if (!mainWindow.check_vfr.Checked)
                    vid_frame_rate = " -r " + videoFramerate;
            }

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

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


            switch (mainWindow.drp_deNoise.Text)
            {
                case "None":
                    denoise = "";
                    break;
                case "Weak":
                    denoise = " --denoise=weak";
                    break;
                case "Medium":
                    denoise = " --denoise=medium";
                    break;
                case "Strong":
                    denoise = " --denoise=strong";
                    break;
                default:
                    denoise = "";
                    break;
            }

            if (mainWindow.check_iPodAtom.Checked)
                ipodAtom = " -I ";

            if (mainWindow.check_optimiseMP4.Checked)
                optimizeMP4 = " -O ";


            string queryVideoSettings = videoBitrate + videoFilesize + vidQSetting + twoPassEncoding + vid_frame_rate + turboH264 + ipodAtom + optimizeMP4 + largeFile + denoise;
            #endregion

            // Audio Settings Tab
            #region Audio Settings Tab

            string audioBitrate = mainWindow.drp_audioBitrate.Text;
            string audioSampleRate = mainWindow.drp_audioSampleRate.Text;
            string track1 = mainWindow.drp_track1Audio.Text;
            string track2 = mainWindow.drp_track2Audio.Text;
            string audioChannels = "";
            string Mixdown = mainWindow.drp_audioMixDown.Text;
            string SixChannelAudio = "";
            string subtitles = mainWindow.drp_subtitle.Text;
            string subScan = "";
            string forced = "";
            string drc = "";

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

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

            // Audio Track 1
            if (track1 == "Automatic")
                audioChannels = "";
            else if (track1 == "")
                audioChannels = "";
            else if (track1 == "None")
                audioChannels = " -a none";
            else
            {
                string[] tempSub;
                tempSub = track1.Split(' ');
                audioChannels = " -a " + tempSub[0];
            }

            // Audio Track 2
            if (audioChannels != "")
            {
                if ((track2 != "") && (track2 != "None"))
                {
                    string[] tempSub;
                    tempSub = track2.Split(' ');
                    audioChannels = audioChannels + "," + tempSub[0];
                }
            }
            else
            {
                if ((track2 != "") && (track2 != "None"))
                {
                    string[] tempSub;
                    tempSub = track2.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 = "";
                    break;
            }

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

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

            if (mainWindow.check_forced.Checked)
                forced = " -F ";

            //Dynamic Range Compression (expects a float but a double is used for ease)
            double value = mainWindow.slider_drc.Value / 10.0;
            value++;
            drc = " -D " + value;

            string queryAudioSettings = audioBitrate + audioSampleRate + drc + audioChannels + SixChannelAudio + subScan + subtitles + forced;
            #endregion

            // Chapter Markers Tab
            #region Chapter Markers

            string ChapterMarkers = "";

            // Attach Source name and dvd title to the start of the chapters.csv filename.
            // This is for the queue. It allows different chapter name files for each title.
            string source_name = mainWindow.text_source.Text;
            string[] sourceName = source.Split('\\');
            source_name = sourceName[sourceName.Length - 1].Replace(".iso", "").Replace(".mpg", "").Replace(".ts", "").Replace(".ps", "");
            source_name = source_name.Replace("\"", "");

            string source_title = mainWindow.drp_dvdtitle.Text;
            string[] titlesplit = source_title.Split(' ');
            source_title = titlesplit[0];

            if (mainWindow.Check_ChapterMarkers.Checked)
            {

                if (source_name != "Click 'Browse' to continue")
                {
                    if (source_title != "Automatic")
                    {
                        string filename = source_name + "-" + source_title + "-chapters.csv";
                        string path = Path.Combine(Path.GetTempPath(), filename);

                        Boolean saveCSV = chapterCSVSave(mainWindow, path);
                        if (saveCSV == false)
                            ChapterMarkers = " -m ";
                        else
                        {
                            ChapterMarkers = " --markers=" + "\"" + path + "\"";
                        }
                    }
                    else
                    {
                        string path = Path.Combine(Path.GetTempPath(), "chapters.csv");
                        ChapterMarkers = " --markers=" + "\"" + path + "\"";
                    }
                }
                else
                {
                    string path = Path.Combine(Path.GetTempPath(), "chapters.csv");
                    ChapterMarkers = " --markers=" + "\"" + path + "\"";
                } 
            }

            string chapter_markers = ChapterMarkers;
            #endregion

            // H264 Tab
            #region  H264 Tab

            string h264Advanced = mainWindow.rtf_h264advanced.Text;

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


            string h264Settings = h264Advanced;
            #endregion

            // Other
            #region Processors / Other

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

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


            string queryAdvancedSettings = processors;

            string verbose = " -v ";
            #endregion

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

        /*
         * Set's up the DataGridView on the Chapters tab (frmMain)
         */
        public void chapterNaming(frmMain mainWindow)
        {
            try
            {
                mainWindow.data_chpt.Rows.Clear();
                int i = 0;
                int rowCount = 0;
                int start = 0;
                int finish = 0;
                if (mainWindow.drop_chapterFinish.Text != "Auto")
                    finish = int.Parse(mainWindow.drop_chapterFinish.Text);

                if (mainWindow.drop_chapterStart.Text != "Auto")
                    start = int.Parse(mainWindow.drop_chapterStart.Text);

                rowCount = finish - (start - 1);

                while (i < rowCount)
                {
                    DataGridViewRow row = new DataGridViewRow();

                    mainWindow.data_chpt.Rows.Insert(i, row);
                    mainWindow.data_chpt.Rows[i].Cells[0].Value = (i + 1);
                    mainWindow.data_chpt.Rows[i].Cells[1].Value = "Chapter " + (i + 1);
                    i++;
                }
            }
            catch (Exception exc)
            {
                MessageBox.Show("chapterNaming() Error has occured: \n" + exc.ToString());
            }
        }

        /*
         * This function saves the data in the chapters tab, dataGridView into a CSV file called chapters.csv in this applications
         * running directory.
         */
        private Boolean chapterCSVSave(frmMain mainWindow, string file_path_name)
        {
            try
            {      
                StringBuilder csv = new StringBuilder();

                foreach (DataGridViewRow row in mainWindow.data_chpt.Rows)
                {
                    csv.Append(row.Cells[0].Value.ToString());
                    csv.Append(",");
                    csv.Append(row.Cells[1].Value.ToString());
                    csv.Append(Environment.NewLine);
                }
                StreamWriter file = new StreamWriter(file_path_name);
                file.Write(csv.ToString());
                file.Close();
                file.Dispose();
                return true;

            }
            catch (Exception exc)
            {
                MessageBox.Show("Unable to save Chapter Makrers file! \nChapter marker names will NOT be saved in your encode \n\n" + exc.ToString(), "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return false;
            }
        }

        // End of Functions
    }
}