using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Xml;

namespace SBD_Parser
{
    class XmlIO
    {

        public DataTable ReadXml(string filename)
        {
            DataTable dt = new DataTable("xmldata");
            dt.Columns.Add("Parameter");
            dt.Columns.Add("Values");
            dt.Columns.Add("Unit");
            bool bStartRead = false;
            int valuecount=0;
            string sParameter="", sUnit="", sValue="";
            using (XmlReader reader = XmlReader.Create(filename))
            {
                while (reader.Read())
                {
                    if (reader.NodeType == XmlNodeType.Element && reader.Name == "Command")
                    {
                        bStartRead = true;
                        reader.Read();
                        while (!(reader.NodeType == XmlNodeType.Element))
                            reader.Read();
                    }

                    if (reader.NodeType == XmlNodeType.EndElement && reader.Name == "Command")
                    {
                        bStartRead = false;
                        dt.Rows.Add(sParameter, sValue, sUnit);
                        valuecount = 0;
                        sValue = "";
                    }
                    if (bStartRead)
                    {
                        if (reader.NodeType == XmlNodeType.Element)
                        {
                            string readstring = reader.ReadString();
                            switch (reader.Name)
                            {
                                case "NoOfValues":
                                    break;
                                case "Parameter":
                                    sParameter = readstring;
                                    break;
                                case "Value":
                                    sValue += readstring+"#";
                                    valuecount++;
                                    break;
                                case "Unit":
                                    sUnit = readstring;
                                    break;
                                default:
                                    break;
                            }
                        }
                    }

                }
            }
            return dt;
        }
        private void WriteXml(DataTable dt, string FileName, string ParentName)
        {
            using (XmlWriter writer = XmlWriter.Create(FileName))
            {
                XmlWriterSettings settings = new XmlWriterSettings();
                settings.Indent = true;
                settings.IndentChars = "\t";
                settings.NewLineOnAttributes = true;
                writer.WriteStartDocument();
                writer.WriteStartElement("Flash_Settings");

                foreach (DataRow row in dt.Rows)
                {
                    writer.WriteStartElement("Command");
                    writer.WriteElementString("Parameter", (string)row.ItemArray[0]);
                    string[] words = ((string)row.ItemArray[1]).Split('#');
                    for (int i = 0; i < words.Length - 1; i++)
                    {
                        writer.WriteElementString("Value", words[i]);
                    }
                    writer.WriteElementString("Unit", (string)row.ItemArray[2]);
                    writer.WriteEndElement();
                }
                writer.WriteEndElement();
                writer.WriteEndDocument();
            }
        }
        public void WriteKml(DataTable dt, string FileName)
        {
            XmlWriterSettings settings = new XmlWriterSettings();
            settings.Indent = true;
            settings.IndentChars = "\t";
            settings.NewLineOnAttributes = true;
            using (XmlWriter writer = XmlWriter.Create(FileName,settings))
            {
                int count = 0;                
                writer.WriteStartDocument();
                writer.WriteStartElement("kml", "http://www.opengis.net/kml/2.2");
                writer.WriteStartElement("Document");

                foreach (DataRow row in dt.Rows)
                {
                    count++;
                    
                    writer.WriteStartElement("Placemark");
                    writer.WriteElementString("Name", "Point"+count.ToString());
                    writer.WriteElementString("Description", "Point"+count.ToString());
                   
                    writer.WriteStartElement("Point");
                    writer.WriteElementString("coordinates", row["Longitude"] + "," + row["Latitude"]);
                    writer.WriteEndElement();

                    writer.WriteEndElement();
                    
                }
                writer.WriteEndElement();
                writer.WriteEndElement();
                writer.WriteEndDocument();
            }
        }
        public void WriteKml(DataTable dt, string FileName, bool timestamp, bool path, string color, int width, bool supplyv,
            bool adc2,bool adc3,bool gpio0,bool gpio1, bool acc,bool gyro)
        {
            XmlWriterSettings settings = new XmlWriterSettings();
            settings.Indent = true;
            settings.IndentChars = "\t";
            settings.NewLineOnAttributes = true;
            string coordinates = "";
            using (XmlWriter writer = XmlWriter.Create(FileName, settings))
            {
                int count = 0;
                writer.WriteStartDocument();
                writer.WriteStartElement("kml", "http://www.opengis.net/kml/2.2");
                writer.WriteStartElement("Document");
                writer.WriteElementString("name", "Locations");
                writer.WriteElementString("description","GPS Co-ordinates" );

                foreach (DataRow row in dt.Rows)
                {
                    coordinates += row["Longitude"] + "," + row["Latitude"] + "\t";
                    count++;

                    writer.WriteStartElement("Placemark");
                    if (timestamp)
                    {
                        if ((string)row["Time"] != "")
                        {
                            writer.WriteStartElement("TimeStamp");
                            writer.WriteElementString("when", (string)row["Time"]);
                            writer.WriteEndElement();
                        }
                    }

                    // For externded data

                    writer.WriteStartElement("ExtendedData");
                    if (supplyv)
                    {
                        if ((string)row["SupplyVoltage"] != "")
                        {
                            writer.WriteStartElement("Data");
                            writer.WriteAttributeString("name", "string");
                            writer.WriteElementString("displayName", "Supply Voltage");
                            writer.WriteElementString("value", (string)row["SupplyVoltage"]);
                            writer.WriteEndElement();
                        }
                    }
                    if (adc2)
                    {
                        if ((string)row["ADC2"] != "")
                        {
                            writer.WriteStartElement("Data");
                            writer.WriteAttributeString("name", "string");
                            writer.WriteElementString("displayName", "ADC 2 Value");
                            writer.WriteElementString("value", (string)row["ADC2"]);
                            writer.WriteEndElement();
                        }
                    }
                    if (adc3)
                    {
                        if ((string)row["ADC3"] != "")
                        {
                            writer.WriteStartElement("Data");
                            writer.WriteAttributeString("name", "string");
                            writer.WriteElementString("displayName", "ADC 3 Value");
                            writer.WriteElementString("value", (string)row["ADC3"]);
                            writer.WriteEndElement();
                        }
                    }
                    if (gpio0)
                    {
                        if ((string)row["GPIO0"] != "")
                        {
                            writer.WriteStartElement("Data");
                            writer.WriteAttributeString("name", "string");
                            writer.WriteElementString("displayName", "GPIO0 Value");
                            writer.WriteElementString("value", (string)row["GPIO0"]);
                            writer.WriteEndElement();
                        }
                    }
                    if (gpio1)
                    {
                        if ((string)row["GPIO1"] != "")
                        {
                            writer.WriteStartElement("Data");
                            writer.WriteAttributeString("name", "string");
                            writer.WriteElementString("displayName", "GPIO1 Value");
                            writer.WriteElementString("value", (string)row["GPIO1"]);
                            writer.WriteEndElement();
                        }
                    }
                    if (acc)
                    {
                        if ((string)row["ACC"] != "")
                        {
                            writer.WriteStartElement("Data");
                            writer.WriteAttributeString("name", "string");
                            writer.WriteElementString("displayName", "Accelerometer Values");
                            writer.WriteElementString("value", (string)row["ACC"]);
                            writer.WriteEndElement();
                        }
                    }
                    if (gyro)
                    {
                        if ((string)row["GPIO1"] != "")
                        {
                            writer.WriteStartElement("Data");
                            writer.WriteAttributeString("name", "string");
                            writer.WriteElementString("displayName", "Gyroscope Value");
                            writer.WriteElementString("value", (string)row["GYRO"]);
                            writer.WriteEndElement();
                        }
                    }

                    writer.WriteEndElement();

                    
                    writer.WriteElementString("Name", "Point" + count.ToString());
                    //writer.WriteElementString("Description", "Point" + count.ToString());

                    writer.WriteStartElement("Point");
                    writer.WriteElementString("coordinates", row["Longitude"] + "," + row["Latitude"]);
                    writer.WriteEndElement();

                    writer.WriteEndElement();

                }
                if (path)
                {
                    //Writing the style
                    //Writes <Style id="kmlstyle">
                    writer.WriteStartElement("Style");
                    writer.WriteAttributeString("id", "kmlstyle");
                    //writes the linestyle
                    writer.WriteStartElement("LineStyle");
                    writer.WriteElementString("color", color);
                    writer.WriteElementString("width", width.ToString());
                    writer.WriteEndElement();

                    //writes the polystyle
                    //writer.WriteStartElement("PolyStyle");
                    //writer.WriteElementString("color", color);
                    //writer.WriteEndElement();

                    writer.WriteEndElement();
                    writer.WriteStartElement("Placemark");
                    writer.WriteElementString("name", "Path");
                    writer.WriteElementString("description", "Path connecting the gps co-ordinates");
                    writer.WriteElementString("styleUrl", "#kmlstyle");
                    writer.WriteStartElement("LineString");
                    writer.WriteElementString("tessellate", "1");
                    writer.WriteElementString("altitudeMode", "absolute");
                    writer.WriteElementString("coordinates", coordinates);
                    writer.WriteEndElement();
                    writer.WriteEndElement();
                }


                writer.WriteEndElement();
                writer.WriteEndElement();
                writer.WriteEndDocument();
            }
        }
    }
}