    ﻿using System;
    using System.Collections.Generic;
    using System.IO;
    using System.IO.Compression;
    using System.Text;
    using System.Xml;
    using System.Xml.Schema;

    namespace Nikse.SubtitleEdit.Core.SubtitleFormats
    {
        public class DCinemaSmpte2007 : SubtitleFormat
        {
            //<?xml version="1.0" encoding="UTF-8"?>
            //<dcst:SubtitleReel xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:dcst="http://www.smpte-ra.org/schemas/428-7/2007/DCST">
            //  <Id>urn:uuid:7be835a3-cfb4-43d0-bb4b-f0b4c95e962e</Id>
            //  <ContentTitleText>2001, A Space Odissey</ContentTitleText>
            //  <AnnotationText>This is a subtitle file</AnnotationText>
            //  <IssueDate>2012-06-26T12:33:59.000-00:00</IssueDate>
            //  <ReelNumber>1</ReelNumber>
            //  <Language>fr</Language>
            //  <EditRate>25 1</EditRate>
            //  <TimeCodeRate>25</TimeCodeRate>
            //  <StartTime>00:00:00:00</StartTime>
            //  <LoadFont ID="theFontId">urn:uuid:3dec6dc0-39d0-498d-97d0-928d2eb78391</LoadFont>
            //  <SubtitleList
            //      <Font ID="theFontId" Size="39" Weight="normal" Color="FFFFFFFF">
            //      <Subtitle FadeDownTime="00:00:00:00" FadeUpTime="00:00:00:00" TimeOut="00:00:00:01" TimeIn="00:00:00:00" SpotNumber="1">
            //          <Text Vposition="10.0" Valign="bottom">Hallo</Text>
            //      </Subtitle>
            //  </SubtitleList
            //</dcst:SubtitleReel>

            public string Errors { get; private set; }

            private double _frameRate = 24;

            public int Version { get; set; }

            public override string Extension => ".xml";

            public override string Name => "D-Cinema SMPTE 2007";

            public override bool IsMine(List<string> lines, string fileName)
            {
                var sb = new StringBuilder();
                lines.ForEach(line => sb.AppendLine(line));
                string xmlAsString = sb.ToString().Trim();

                if (xmlAsString.Contains("http://www.smpte-ra.org/schemas/428-7/2010/DCST"))
                    return false;

                if (xmlAsString.Contains("<dcst:SubtitleReel") || xmlAsString.Contains("<SubtitleReel"))
                {
                    var xml = new XmlDocument();
                    try
                    {
                        xmlAsString = xmlAsString.Replace("<dcst:", "<").Replace("</dcst:", "</");
                        xmlAsString = xmlAsString.Replace("xmlns=\"http://www.smpte-ra.org/schemas/428-7/2007/DCST\"", string.Empty);
                        xml.LoadXml(xmlAsString);
                        var subtitles = xml.DocumentElement.SelectNodes("//Subtitle");
                        return subtitles != null && subtitles.Count > 0;
                    }
                    catch (Exception ex)
                    {
                        System.Diagnostics.Debug.WriteLine(ex.Message);
                        return false;
                    }
                }
                return false;
            }

            public override string ToText(Subtitle subtitle, string title)
            {
                Errors = null;
                var ss = Configuration.Settings.SubtitleSettings;

                if (!string.IsNullOrEmpty(ss.CurrentDCinemaEditRate))
                {
                    string[] temp = ss.CurrentDCinemaEditRate.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
                    double d1, d2;
                    if (temp.Length == 2 && double.TryParse(temp[0], out d1) && double.TryParse(temp[1], out d2))
                        _frameRate = d1 / d2;
                }

                string xmlStructure =
                    "<dcst:SubtitleReel xmlns:dcst=\"http://www.smpte-ra.org/schemas/428-7/2007/DCST\" xmlns:xs=\"http://www.w3.org/2001/XMLSchema\">" + Environment.NewLine +
                    "  <dcst:Id>urn:uuid:7be835a3-cfb4-43d0-bb4b-f0b4c95e962e</dcst:Id>" + Environment.NewLine +
                    "  <dcst:ContentTitleText></dcst:ContentTitleText> " + Environment.NewLine +
                    "  <dcst:AnnotationText>This is a subtitle file</dcst:AnnotationText>" + Environment.NewLine +
                    "  <dcst:IssueDate>2012-06-26T12:33:59.000-00:00</dcst:IssueDate>" + Environment.NewLine +
                    "  <dcst:ReelNumber>1</dcst:ReelNumber>" + Environment.NewLine +
                    "  <dcst:Language>en</dcst:Language>" + Environment.NewLine +
                    "  <dcst:EditRate>25 1</dcst:EditRate>" + Environment.NewLine +
                    "  <dcst:TimeCodeRate>25</dcst:TimeCodeRate>" + Environment.NewLine +
                    "  <dcst:StartTime>00:00:00:00</dcst:StartTime> " + Environment.NewLine +
                    "  <dcst:LoadFont ID=\"theFontId\">urn:uuid:3dec6dc0-39d0-498d-97d0-928d2eb78391</dcst:LoadFont>" + Environment.NewLine +
                    "  <dcst:SubtitleList>" + Environment.NewLine +
                    "    <dcst:Font ID=\"theFontId\" Size=\"39\" Weight=\"normal\" Color=\"FFFFFFFF\" Effect=\"border\" EffectColor=\"FF000000\">" + Environment.NewLine +
                    "    </dcst:Font>" + Environment.NewLine +
                    "  </dcst:SubtitleList>" + Environment.NewLine +
                    "</dcst:SubtitleReel>";

                var xml = new XmlDocument();
                xml.LoadXml(xmlStructure);
                xml.PreserveWhitespace = true;
                var nsmgr = new XmlNamespaceManager(xml.NameTable);
                nsmgr.AddNamespace("dcst", xml.DocumentElement.NamespaceURI);

                if (string.IsNullOrEmpty(ss.CurrentDCinemaMovieTitle))
                    ss.CurrentDCinemaMovieTitle = title;

                if (ss.CurrentDCinemaFontSize == 0 || string.IsNullOrEmpty(ss.CurrentDCinemaFontEffect))
                    Configuration.Settings.SubtitleSettings.InitializeDCinameSettings(true);

                xml.DocumentElement.SelectSingleNode("dcst:ContentTitleText", nsmgr).InnerText = ss.CurrentDCinemaMovieTitle;
                if (string.IsNullOrEmpty(ss.CurrentDCinemaSubtitleId) || !ss.CurrentDCinemaSubtitleId.StartsWith("urn:uuid:"))
                    ss.CurrentDCinemaSubtitleId = "urn:uuid:" + Guid.NewGuid();
                xml.DocumentElement.SelectSingleNode("dcst:Id", nsmgr).InnerText = ss.CurrentDCinemaSubtitleId;
                xml.DocumentElement.SelectSingleNode("dcst:ReelNumber", nsmgr).InnerText = ss.CurrentDCinemaReelNumber;
                xml.DocumentElement.SelectSingleNode("dcst:IssueDate", nsmgr).InnerText = ss.CurrentDCinemaIssueDate;
                if (string.IsNullOrEmpty(ss.CurrentDCinemaLanguage))
                    ss.CurrentDCinemaLanguage = "en";
                xml.DocumentElement.SelectSingleNode("dcst:Language", nsmgr).InnerText = ss.CurrentDCinemaLanguage;
                if (ss.CurrentDCinemaEditRate == null && ss.CurrentDCinemaTimeCodeRate == null)
                {
                    if (Configuration.Settings.General.CurrentFrameRate == 24)
                    {
                        ss.CurrentDCinemaEditRate = "24 1";
                        ss.CurrentDCinemaTimeCodeRate = "24";
                    }
                    else
                    {
                        ss.CurrentDCinemaEditRate = "25 1";
                        ss.CurrentDCinemaTimeCodeRate = "25";
                    }
                }
                xml.DocumentElement.SelectSingleNode("dcst:EditRate", nsmgr).InnerText = ss.CurrentDCinemaEditRate;
                xml.DocumentElement.SelectSingleNode("dcst:TimeCodeRate", nsmgr).InnerText = ss.CurrentDCinemaTimeCodeRate;
                if (string.IsNullOrEmpty(ss.CurrentDCinemaStartTime))
                    ss.CurrentDCinemaStartTime = "00:00:00:00";
                xml.DocumentElement.SelectSingleNode("dcst:StartTime", nsmgr).InnerText = ss.CurrentDCinemaStartTime;
                xml.DocumentElement.SelectSingleNode("dcst:LoadFont", nsmgr).InnerText = ss.CurrentDCinemaFontUri;
                int fontSize = ss.CurrentDCinemaFontSize;
                string loadedFontId = "Font1";
                if (!string.IsNullOrEmpty(ss.CurrentDCinemaFontId))
                    loadedFontId = ss.CurrentDCinemaFontId;
                xml.DocumentElement.SelectSingleNode("dcst:LoadFont", nsmgr).Attributes["ID"].Value = loadedFontId;
                xml.DocumentElement.SelectSingleNode("dcst:SubtitleList/dcst:Font", nsmgr).Attributes["Size"].Value = fontSize.ToString();
                xml.DocumentElement.SelectSingleNode("dcst:SubtitleList/dcst:Font", nsmgr).Attributes["Color"].Value = "FF" + Utilities.ColorToHex(ss.CurrentDCinemaFontColor).TrimStart('#').ToUpper();
                xml.DocumentElement.SelectSingleNode("dcst:SubtitleList/dcst:Font", nsmgr).Attributes["ID"].Value = loadedFontId;
                xml.DocumentElement.SelectSingleNode("dcst:SubtitleList/dcst:Font", nsmgr).Attributes["Effect"].Value = ss.CurrentDCinemaFontEffect;
                xml.DocumentElement.SelectSingleNode("dcst:SubtitleList/dcst:Font", nsmgr).Attributes["EffectColor"].Value = "FF" + Utilities.ColorToHex(ss.CurrentDCinemaFontEffectColor).TrimStart('#').ToUpper();

                XmlNode mainListFont = xml.DocumentElement.SelectSingleNode("dcst:SubtitleList/dcst:Font", nsmgr);
                int no = 0;
                foreach (Paragraph p in subtitle.Paragraphs)
                {
                    if (p.Text != null)
                    {
                        XmlNode subNode = xml.CreateElement("dcst:Subtitle", "dcst");

                        XmlAttribute id = xml.CreateAttribute("SpotNumber");
                        id.InnerText = (no + 1).ToString();
                        subNode.Attributes.Append(id);

                        XmlAttribute fadeUpTime = xml.CreateAttribute("FadeUpTime");
                        fadeUpTime.InnerText = "00:00:00:00"; //Configuration.Settings.SubtitleSettings.DCinemaFadeUpDownTime.ToString();
                        subNode.Attributes.Append(fadeUpTime);

                        XmlAttribute fadeDownTime = xml.CreateAttribute("FadeDownTime");
                        fadeDownTime.InnerText = "00:00:00:00"; //Configuration.Settings.SubtitleSettings.DCinemaFadeUpDownTime.ToString();
                        subNode.Attributes.Append(fadeDownTime);

                        XmlAttribute start = xml.CreateAttribute("TimeIn");
                        start.InnerText = ConvertToTimeString(p.StartTime);
                        subNode.Attributes.Append(start);

                        XmlAttribute end = xml.CreateAttribute("TimeOut");
                        end.InnerText = ConvertToTimeString(p.EndTime);
                        subNode.Attributes.Append(end);

                        bool alignLeft = p.Text.StartsWith("{\\a1}", StringComparison.Ordinal) || p.Text.StartsWith("{\\a5}", StringComparison.Ordinal) || p.Text.StartsWith("{\\a9}", StringComparison.Ordinal) || // sub station alpha
                                         p.Text.StartsWith("{\\an1}", StringComparison.Ordinal) || p.Text.StartsWith("{\\an4}", StringComparison.Ordinal) || p.Text.StartsWith("{\\an7}", StringComparison.Ordinal); // advanced sub station alpha

                        bool alignRight = p.Text.StartsWith("{\\a3}", StringComparison.Ordinal) || p.Text.StartsWith("{\\a7}", StringComparison.Ordinal) || p.Text.StartsWith("{\\a11}", StringComparison.Ordinal) || // sub station alpha
                                          p.Text.StartsWith("{\\an3}", StringComparison.Ordinal) || p.Text.StartsWith("{\\an6}", StringComparison.Ordinal) || p.Text.StartsWith("{\\an9}", StringComparison.Ordinal); // advanced sub station alpha

                        bool alignVTop = p.Text.StartsWith("{\\a5}", StringComparison.Ordinal) || p.Text.StartsWith("{\\a6}", StringComparison.Ordinal) || p.Text.StartsWith("{\\a7}", StringComparison.Ordinal) || // sub station alpha
                                         p.Text.StartsWith("{\\an7}", StringComparison.Ordinal) || p.Text.StartsWith("{\\an8}", StringComparison.Ordinal) || p.Text.StartsWith("{\\an9}", StringComparison.Ordinal); // advanced sub station alpha

                        bool alignVCenter = p.Text.StartsWith("{\\a9}", StringComparison.Ordinal) || p.Text.StartsWith("{\\a10}", StringComparison.Ordinal) || p.Text.StartsWith("{\\a11}", StringComparison.Ordinal) || // sub station alpha
                                           p.Text.StartsWith("{\\an4}", StringComparison.Ordinal) || p.Text.StartsWith("{\\an5}", StringComparison.Ordinal) || p.Text.StartsWith("{\\an6}", StringComparison.Ordinal); // advanced sub station alpha

                        string text = Utilities.RemoveSsaTags(p.Text);

                        var lines = text.SplitToLines();
                        int vPos = 1 + lines.Count * 7;
                        int vPosFactor = (int)Math.Round(fontSize / 7.4);
                        if (alignVTop)
                        {
                            vPos = Configuration.Settings.SubtitleSettings.DCinemaBottomMargin; // Bottom margin is normally 8
                        }
                        else if (alignVCenter)
                        {
                            vPos = (int)Math.Round((lines.Count * vPosFactor * -1) / 2.0);
                        }
                        else
                        {
                            vPos = (lines.Count * vPosFactor) - vPosFactor + Configuration.Settings.SubtitleSettings.DCinemaBottomMargin; // Bottom margin is normally 8
                        }

                        bool isItalic = false;
                        int fontNo = 0;
                        Stack<string> fontColors = new Stack<string>();
                        foreach (string line in lines)
                        {
                            XmlNode textNode = xml.CreateElement("dcst:Text", "dcst");

                            XmlAttribute vPosition = xml.CreateAttribute("Vposition");
                            vPosition.InnerText = vPos.ToString();
                            textNode.Attributes.Append(vPosition);

                            XmlAttribute vAlign = xml.CreateAttribute("Valign");
                            if (alignVTop)
                                vAlign.InnerText = "top";
                            else if (alignVCenter)
                                vAlign.InnerText = "center";
                            else
                                vAlign.InnerText = "bottom";
                            textNode.Attributes.Append(vAlign); textNode.Attributes.Append(vAlign);

                            XmlAttribute hAlign = xml.CreateAttribute("Halign");
                            if (alignLeft)
                                hAlign.InnerText = "left";
                            else if (alignRight)
                                hAlign.InnerText = "right";
                            else
                                hAlign.InnerText = "center";
                            textNode.Attributes.Append(hAlign);

                            XmlAttribute direction = xml.CreateAttribute("Direction");
                            direction.InnerText = "ltr";
                            textNode.Attributes.Append(direction);

                            int i = 0;
                            var txt = new StringBuilder();
                            var html = new StringBuilder();
                            XmlNode nodeTemp = xml.CreateElement("temp");
                            while (i < line.Length)
                            {
                                if (!isItalic && line.Substring(i).StartsWith("<i>"))
                                {
                                    if (txt.Length > 0)
                                    {
                                        nodeTemp.InnerText = txt.ToString();
                                        html.Append(nodeTemp.InnerXml);
                                        txt.Clear();
                                    }
                                    isItalic = true;
                                    i += 2;
                                }
                                else if (isItalic && line.Substring(i).StartsWith("</i>"))
                                {
                                    if (txt.Length > 0)
                                    {
                                        XmlNode fontNode = xml.CreateElement("dcst:Font", "dcst");

                                        XmlAttribute italic = xml.CreateAttribute("Italic");
                                        italic.InnerText = "yes";
                                        fontNode.Attributes.Append(italic);

                                        if (line.Length > i + 5 && line.Substring(i + 4).StartsWith("</font>"))
                                        {
                                            XmlAttribute fontColor = xml.CreateAttribute("Color");
                                            fontColor.InnerText = fontColors.Pop();
                                            fontNode.Attributes.Append(fontColor);
                                            fontNo--;
                                            i += 7;
                                        }

                                        fontNode.InnerText = HtmlUtil.RemoveHtmlTags(txt.ToString());
                                        html.Append(fontNode.OuterXml);
                                        txt.Clear();
                                    }
                                    isItalic = false;
                                    i += 3;
                                }
                                else if (line.Substring(i).StartsWith("<font color=") && line.Substring(i + 3).Contains('>'))
                                {
                                    int endOfFont = line.IndexOf('>', i);
                                    if (txt.Length > 0)
                                    {
                                        nodeTemp.InnerText = txt.ToString();
                                        html.Append(nodeTemp.InnerXml);
                                        txt.Clear();
                                    }
                                    string c = line.Substring(i + 12, endOfFont - (i + 12));
                                    c = c.Trim('"').Trim('\'').Trim();
                                    if (c.StartsWith('#'))
                                        c = c.TrimStart('#').ToUpper().PadLeft(8, 'F');
                                    fontColors.Push(c);
                                    fontNo++;
                                    i += endOfFont - i;
                                }
                                else if (fontNo > 0 && line.Substring(i).StartsWith("</font>"))
                                {
                                    if (txt.Length > 0)
                                    {
                                        XmlNode fontNode = xml.CreateElement("dcst:Font", "dcst");

                                        XmlAttribute fontColor = xml.CreateAttribute("Color");
                                        fontColor.InnerText = fontColors.Pop();
                                        fontNode.Attributes.Append(fontColor);

                                        if (line.Length > i + 9 && line.Substring(i + 7).StartsWith("</i>"))
                                        {
                                            XmlAttribute italic = xml.CreateAttribute("Italic");
                                            italic.InnerText = "yes";
                                            fontNode.Attributes.Append(italic);
                                            isItalic = false;
                                            i += 4;
                                        }

                                        fontNode.InnerText = HtmlUtil.RemoveHtmlTags(txt.ToString());
                                        html.Append(fontNode.OuterXml);
                                        txt.Clear();
                                    }
                                    fontNo--;
                                    i += 6;
                                }
                                else
                                {
                                    txt.Append(line[i]);
                                }
                                i++;
                            }

                            if (fontNo > 0)
                            {
                                if (txt.Length > 0)
                                {
                                    XmlNode fontNode = xml.CreateElement("dcst:Font", "dcst");

                                    XmlAttribute fontColor = xml.CreateAttribute("Color");
                                    fontColor.InnerText = fontColors.Peek();
                                    fontNode.Attributes.Append(fontColor);

                                    if (isItalic)
                                    {
                                        XmlAttribute italic = xml.CreateAttribute("Italic");
                                        italic.InnerText = "yes";
                                        fontNode.Attributes.Append(italic);
                                    }

                                    fontNode.InnerText = HtmlUtil.RemoveHtmlTags(txt.ToString());
                                    html.Append(fontNode.OuterXml);
                                }
                                else if (html.Length > 0 && html.ToString().StartsWith("<dcst:Font "))
                                {
                                    XmlDocument temp = new XmlDocument();
                                    temp.LoadXml("<root>" + html.ToString().Replace("dcst:Font", "Font") + "</root>");
                                    XmlNode fontNode = xml.CreateElement("dcst:Font");
                                    fontNode.InnerXml = temp.DocumentElement.SelectSingleNode("Font").InnerXml;
                                    foreach (XmlAttribute a in temp.DocumentElement.SelectSingleNode("Font").Attributes)
                                    {
                                        XmlAttribute newA = xml.CreateAttribute(a.Name);
                                        newA.InnerText = a.InnerText;
                                        fontNode.Attributes.Append(newA);
                                    }

                                    XmlAttribute fontColor = xml.CreateAttribute("Color");
                                    fontColor.InnerText = fontColors.Peek();
                                    fontNode.Attributes.Append(fontColor);

                                    html.Clear();
                                    html.Append(fontNode.OuterXml);
                                }
                            }
                            else if (isItalic)
                            {
                                if (txt.Length > 0)
                                {
                                    XmlNode fontNode = xml.CreateElement("dcst:Font", "dcst");

                                    XmlAttribute italic = xml.CreateAttribute("Italic");
                                    italic.InnerText = "yes";
                                    fontNode.Attributes.Append(italic);

                                    fontNode.InnerText = HtmlUtil.RemoveHtmlTags(line);
                                    html.Append(fontNode.OuterXml);
                                }
                            }
                            else
                            {
                                if (txt.Length > 0)
                                {
                                    nodeTemp.InnerText = txt.ToString();
                                    html.Append(nodeTemp.InnerXml);
                                }
                            }
                            textNode.InnerXml = html.ToString();

                            subNode.AppendChild(textNode);
                            if (alignVTop)
                                vPos += vPosFactor;
                            else
                                vPos -= vPosFactor;
                        }
                        if (subNode.InnerXml.Length == 0)
                        { // Empty text is just one space
                            XmlNode textNode = xml.CreateElement("dcst:Text", "dcst");
                            textNode.InnerXml = " ";
                            subNode.AppendChild(textNode);

                            XmlAttribute vPosition = xml.CreateAttribute("Vposition");
                            vPosition.InnerText = vPos.ToString();
                            textNode.Attributes.Append(vPosition);

                            XmlAttribute vAlign = xml.CreateAttribute("Valign");
                            vAlign.InnerText = "bottom";
                            textNode.Attributes.Append(vAlign);
                        }
                        mainListFont.AppendChild(subNode);
                        no++;
                    }
                }
                string result = ToUtf8XmlString(xml).Replace("encoding=\"utf-8\"", "encoding=\"UTF-8\"").Replace(" xmlns:dcst=\"dcst\"", string.Empty);

                const string res = "Nikse.SubtitleEdit.Resources.SMPTE-428-7-2007-DCST.xsd.gz";
                System.Reflection.Assembly asm = System.Reflection.Assembly.GetExecutingAssembly();
                Stream strm = asm.GetManifestResourceStream(res);
                if (strm != null)
                {
                    try
                    {
                        var xmld = new XmlDocument();
                        var rdr = new StreamReader(strm);
                        var zip = new GZipStream(rdr.BaseStream, CompressionMode.Decompress);
                        xmld.LoadXml(result);
                        using (var xr = XmlReader.Create(zip))
                        {
                            xmld.Schemas.Add(null, xr);
                            xmld.Validate(ValidationCallBack);
                        }
                    }
                    catch (Exception exception)
                    {
                        Errors = "Error validating xml via SMPTE - 428 - 7 - 2007 - DCST.xsd: " + exception.Message;
                    }
                }
                return DCinemaSmpte2010.FixDcsTextSameLine(result);
            }

            private void ValidationCallBack(object sender, ValidationEventArgs e)
            {
                throw new Exception(e.Message);
            }

            public override void LoadSubtitle(Subtitle subtitle, List<string> lines, string fileName)
            {
                _errorCount = 0;

                var sb = new StringBuilder();
                lines.ForEach(line => sb.AppendLine(line));
                var xml = new XmlDocument { XmlResolver = null };
                xml.LoadXml(sb.ToString().Replace("<dcst:", "<").Replace("</dcst:", "</").Replace("xmlns=\"http://www.smpte-ra.org/schemas/428-7/2007/DCST\"", string.Empty)); // tags might be prefixed with namespace (or not)... so we just remove them

                var ss = Configuration.Settings.SubtitleSettings;
                try
                {
                    ss.InitializeDCinameSettings(true);
                    XmlNode node = xml.DocumentElement.SelectSingleNode("Id");
                    if (node != null)
                        ss.CurrentDCinemaSubtitleId = node.InnerText;

                    node = xml.DocumentElement.SelectSingleNode("ReelNumber");
                    if (node != null)
                        ss.CurrentDCinemaReelNumber = node.InnerText;

                    node = xml.DocumentElement.SelectSingleNode("EditRate");
                    if (node != null)
                        ss.CurrentDCinemaEditRate = node.InnerText;

                    node = xml.DocumentElement.SelectSingleNode("TimeCodeRate");
                    if (node != null)
                    {
                        ss.CurrentDCinemaTimeCodeRate = node.InnerText;
                        if (ss.CurrentDCinemaEditRate == "24")
                            Configuration.Settings.General.CurrentFrameRate = 24;
                        else if (ss.CurrentDCinemaEditRate == "25")
                            Configuration.Settings.General.CurrentFrameRate = 24;

                        if (BatchSourceFrameRate.HasValue)
                        {
                            Configuration.Settings.General.CurrentFrameRate = BatchSourceFrameRate.Value;
                        }
                    }

                    node = xml.DocumentElement.SelectSingleNode("StartTime");
                    if (node != null)
                        ss.CurrentDCinemaStartTime = node.InnerText;

                    node = xml.DocumentElement.SelectSingleNode("Language");
                    if (node != null)
                        ss.CurrentDCinemaLanguage = node.InnerText;

                    node = xml.DocumentElement.SelectSingleNode("ContentTitleText");
                    if (node != null)
                        ss.CurrentDCinemaMovieTitle = node.InnerText;

                    node = xml.DocumentElement.SelectSingleNode("IssueDate");
                    if (node != null)
                        ss.CurrentDCinemaIssueDate = node.InnerText;

                    node = xml.DocumentElement.SelectSingleNode("LoadFont");
                    if (node != null)
                        ss.CurrentDCinemaFontUri = node.InnerText;

                    node = xml.DocumentElement.SelectSingleNode("SubtitleList/Font");
                    if (node != null)
                    {
                        if (node.Attributes["ID"] != null)
                            ss.CurrentDCinemaFontId = node.Attributes["ID"].InnerText;
                        if (node.Attributes["Size"] != null)
                            ss.CurrentDCinemaFontSize = Convert.ToInt32(node.Attributes["Size"].InnerText);
                        if (node.Attributes["Color"] != null)
                            ss.CurrentDCinemaFontColor = System.Drawing.ColorTranslator.FromHtml("#" + node.Attributes["Color"].InnerText);
                        if (node.Attributes["Effect"] != null)
                            ss.CurrentDCinemaFontEffect = node.Attributes["Effect"].InnerText;
                        if (node.Attributes["EffectColor"] != null)
                            ss.CurrentDCinemaFontEffectColor = System.Drawing.ColorTranslator.FromHtml("#" + node.Attributes["EffectColor"].InnerText);
                    }
                }
                catch (Exception exception)
                {
                    System.Diagnostics.Debug.WriteLine(exception.Message);
                }

                foreach (XmlNode node in xml.DocumentElement.SelectNodes("//Subtitle"))
                {
                    try
                    {
                        var pText = new StringBuilder();
                        string lastVPosition = string.Empty;
                        foreach (XmlNode innerNode in node.ChildNodes)
                        {
                            switch (innerNode.Name)
                            {
                                case "Text":
                                    if (innerNode.Attributes["Vposition"] != null)
                                    {
                                        string vPosition = innerNode.Attributes["Vposition"].InnerText;
                                        if (vPosition != lastVPosition)
                                        {
                                            if (pText.Length > 0 && lastVPosition.Length > 0)
                                                pText.AppendLine();
                                            lastVPosition = vPosition;
                                        }
                                    }
                                    bool alignLeft = false;
                                    bool alignRight = false;
                                    bool alignVTop = false;
                                    bool alignVCenter = false;
                                    if (innerNode.Attributes["Halign"] != null)
                                    {
                                        string hAlign = innerNode.Attributes["Halign"].InnerText;
                                        if (hAlign == "left")
                                            alignLeft = true;
                                        else if (hAlign == "right")
                                            alignRight = true;
                                    }
                                    if (innerNode.Attributes["Valign"] != null)
                                    {
                                        string hAlign = innerNode.Attributes["Valign"].InnerText;
                                        if (hAlign == "top")
                                            alignVTop = true;
                                        else if (hAlign == "center")
                                            alignVCenter = true;
                                    }
                                    if (alignLeft || alignRight || alignVCenter || alignVTop)
                                    {
                                        if (!pText.ToString().StartsWith("{\\an"))
                                        {
                                            string pre = string.Empty;
                                            if (alignVTop)
                                            {
                                                if (alignLeft)
                                                    pre = "{\\an7}";
                                                else if (alignRight)
                                                    pre = "{\\an9}";
                                                else
                                                    pre = "{\\an8}";
                                            }
                                            else if (alignVCenter)
                                            {
                                                if (alignLeft)
                                                    pre = "{\\an4}";
                                                else if (alignRight)
                                                    pre = "{\\an6}";
                                                else
                                                    pre = "{\\an5}";
                                            }
                                            else
                                            {
                                                if (alignLeft)
                                                    pre = "{\\an1}";
                                                else if (alignRight)
                                                    pre = "{\\an3}";
                                            }
                                            string temp = pre + pText;
                                            pText.Clear();
                                            pText.Append(temp);
                                        }
                                    }

                                    if (innerNode.ChildNodes.Count == 0)
                                    {
                                        pText.Append(innerNode.InnerText);
                                    }
                                    else
                                    {
                                        foreach (XmlNode innerInnerNode in innerNode)
                                        {
                                            if (innerInnerNode.Name == "Font" && innerInnerNode.Attributes["Italic"] != null &&
                                                innerInnerNode.Attributes["Italic"].InnerText.Equals("yes", StringComparison.OrdinalIgnoreCase))
                                            {
                                                if (innerInnerNode.Attributes["Color"] != null)
                                                    pText.Append("<i><font color=\"" + GetColorStringFromDCinema(innerInnerNode.Attributes["Color"].Value) + "\">" + innerInnerNode.InnerText + "</font><i>");
                                                else
                                                    pText.Append("<i>" + innerInnerNode.InnerText + "</i>");
                                            }
                                            else if (innerInnerNode.Name == "Font" && innerInnerNode.Attributes["Color"] != null)
                                            {
                                                if (innerInnerNode.Attributes["Italic"] != null && innerInnerNode.Attributes["Italic"].InnerText.Equals("yes", StringComparison.OrdinalIgnoreCase))
                                                    pText.Append("<i><font color=\"" + GetColorStringFromDCinema(innerInnerNode.Attributes["Color"].Value) + "\">" + innerInnerNode.InnerText + "</font><i>");
                                                else
                                                    pText.Append("<font color=\"" + GetColorStringFromDCinema(innerInnerNode.Attributes["Color"].Value) + "\">" + innerInnerNode.InnerText + "</font>");
                                            }
                                            else
                                            {
                                                pText.Append(innerInnerNode.InnerText);
                                            }
                                        }
                                    }
                                    break;
                                default:
                                    pText.Append(innerNode.InnerText);
                                    break;
                            }
                        }
                        string start = node.Attributes["TimeIn"].InnerText;
                        string end = node.Attributes["TimeOut"].InnerText;

                        if (node.ParentNode.Name == "Font" && node.ParentNode.Attributes["Italic"] != null && node.ParentNode.Attributes["Italic"].InnerText.Equals("yes", StringComparison.OrdinalIgnoreCase) &&
                            !pText.ToString().Contains("<i>"))
                        {
                            string text = pText.ToString();
                            if (text.StartsWith("{\\an") && text.Length > 6)
                                text = text.Insert(6, "<i>") + "</i>";
                            else
                                text = "<i>" + text + "</i>";
                            pText = new StringBuilder(text);
                        }

                        subtitle.Paragraphs.Add(new Paragraph(GetTimeCode(start), GetTimeCode(end), pText.ToString()));
                    }
                    catch (Exception ex)
                    {
                        System.Diagnostics.Debug.WriteLine(ex.Message);
                        _errorCount++;
                    }
                }

                if (subtitle.Paragraphs.Count > 0)
                    subtitle.Header = xml.OuterXml; // save id/language/font for later use

                subtitle.Renumber();
            }

            private static string GetColorStringFromDCinema(string p)
            {
                string s = p.ToLower().Trim();
                if (s.Replace("#", string.Empty).
                    Replace("0", string.Empty).
                    Replace("1", string.Empty).
                    Replace("2", string.Empty).
                    Replace("3", string.Empty).
                    Replace("4", string.Empty).
                    Replace("5", string.Empty).
                    Replace("6", string.Empty).
                    Replace("7", string.Empty).
                    Replace("8", string.Empty).
                    Replace("9", string.Empty).
                    Replace("a", string.Empty).
                    Replace("b", string.Empty).
                    Replace("c", string.Empty).
                    Replace("d", string.Empty).
                    Replace("e", string.Empty).
                    Replace("f", string.Empty).Length == 0)
                {
                    if (s.StartsWith('#'))
                        return s;
                    return "#" + s;
                }
                return p;
            }

            private TimeCode GetTimeCode(string s)
            {
                var parts = s.Split(new[] { ':', '.', ',' });

                int milliseconds = (int)Math.Round(int.Parse(parts[3]) * (TimeCode.BaseUnit / _frameRate));
                if (milliseconds > 999)
                    milliseconds = 999;

                return new TimeCode(int.Parse(parts[0]), int.Parse(parts[1]), int.Parse(parts[2]), milliseconds);
            }

            private string ConvertToTimeString(TimeCode time)
            {
                return string.Format("{0:00}:{1:00}:{2:00}:{3:00}", time.Hours, time.Minutes, time.Seconds, DCinemaSmpte2010.MsToFramesMaxFrameRate(time.Milliseconds, _frameRate));
            }

        }
    }

↑ V3107 Identical expression 'i' to the left and to the right of compound assignment.