Store and forward GPS data for Smart Phones

using System;

using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO.Ports;
using System.IO;
using System.Xml;
using System.Threading;

namespace MobileGps {
    delegate void WriteOutputDel(object txt);

    public partial class MainFrm : Form {
        int buffersize = 1024;
        string comPort = "COM5";
        SerialPort sp = new SerialPort();
        StreamWriter swLogFile = null;
        Thread t;
        VVXGps.GPSWebService gpsSvc = null; //= new MobileGps.VVXGps.GPSWebService();
        string id = string.Empty;
        string ver = string.Empty;
        string msg = string.Empty;
        int sendInterval = 1000 * 10; //10sec

        public MainFrm() {
            try {
                InitializeComponent();
                Version v = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version;
                ver = string.Format("Version:{0}.{1}.{2}.{3}\r\n", v.Major, v.Minor, v.Build, v.Revision);
                //msg += "Init\r\n";
                ReadConfig();
                //msg += "ReadConfig done\r\n";
                string logFile = Util.GetLogFile();
                msg += "log file directory:" + logFile + "\r\n";
                try {
                    swLogFile = File.AppendText(logFile);
                } catch (Exception ioe) { msg += ioe.Message; }

                //msg += "Get LogFile Stream\r\n";
                gpsSvc = new MobileGps.VVXGps.GPSWebService();
                
                //msg += "Init gps service\r\n";
                lblOutput.Text = ver + msg;
                
            } catch (Exception ex) {
                lblOutput.Text = ver + "\r\n" + msg + ex.Message;
            }
        }

        private void ReadConfig() {
            try {
                XmlDocument xDoc = new XmlDocument();
                string fname = Util.GetConfigFile();
                if (string.IsNullOrEmpty(fname)) {
                    Util.Reset();
                    fname = Util.GetConfigFile();
                }
                xDoc.Load(fname);
                XmlNode comNode = xDoc.SelectSingleNode("//COM");
                if (comNode != null) {
                    comPort = comNode.InnerText;
                }
                XmlNode idNode = xDoc.SelectSingleNode("//ID");
                if (idNode != null) {
                    id = idNode.InnerText;
                }
                XmlNode sendNode = xDoc.SelectSingleNode("//SendInterval");
                if (sendNode != null) {
                    sendInterval = Int32.Parse(sendNode.InnerText) * 1000;
                }
                //Start process of sending files.
                PickUpFileInput();
            } catch (Exception ex) {
                MessageBox.Show("Read Config error:\r\n" + ex.Message);
            }
        }

        private void PickUpFileInput() {
            Thread t = new Thread(new ThreadStart(GpsFileListner));
            t.Start();
            //Helper h = new Helper();
            //TimerCallback timeCB = new TimerCallback(h.CleanUpOldFiles);
            //System.Threading.Timer t = new System.Threading.Timer(timeCB, null, 100, sendInterval);            
        }

        private void GpsFileListner() {
            Helper h = new Helper();
            while (true) {
                h.CleanUpOldFiles(null);
                Thread.Sleep(sendInterval);
            }
        }

        private void mnuStart_Click(object sender, EventArgs e) {
            sp = new SerialPort(comPort);
//#if !DEBUG
            Connect(sp);
//#endif
            StartCOMPortListner();            
        }

        void sp_DataReceived(object sender, SerialDataReceivedEventArgs e) {
            WriteOutputDel del = new WriteOutputDel(WriteOut);
            Invoke(del, new object[] { sender });
            SerialData sd = e.EventType;
            //if (swLogFile != null)
            //    LogData(string.Format("Sender {0}\r\ne:{1}\r\nSize{2}", sender.ToString(), e.ToString(), sd.ToString()));
        }

        private void WriteOut(object obj) {
            if (InvokeRequired) {
                WriteOutputDel del = new WriteOutputDel(WriteOut);
                Invoke(del, obj);
                return;
            }
            string s = obj.ToString();
            lblOutput.Text = s;
        }

        public bool Connect(SerialPort serialport) {
            if (!this.OpenSerialPort(serialport)) return false; //open a serial port            
            return true;
        }

        public bool OpenSerialPort(System.IO.Ports.SerialPort serialPort1) {
            try {
                if (serialPort1.IsOpen) serialPort1.Close();
                serialPort1.ReadBufferSize = buffersize;
                serialPort1.Open();
                return true;
            } catch (Exception ex) {
                MessageBox.Show("Cann't open serial port." + ex.Message);
                return false;
            }
        }

        private void StartCOMPortListner() {
            t = new Thread(new ThreadStart(Start));
            t.Start();
        }

        private void Start() {
            string line;
            WriteOutputDel del = new WriteOutputDel(WriteOut);
            while (true) {
                try {
                    Thread.Sleep(500);
                   line = sp.ReadLine();

                    if (line != null) {
                        try {
                            if (line.StartsWith("$GPRMC")) {
                                Util.SaveToBatchSend(line);                                                                                            
                                Invoke(del, line);
                            }
                        } catch (Exception ex) {
                            Invoke(del, "Error in Start function:\n" + ex.Message);
                        }                       
                    }
                } catch (Exception ex) {
                    Invoke(del, "Read COM Port input Error");
                    Thread.Sleep(1000);
                }
            }
        }

        //void ProcessServiceInformation(IAsyncResult status) {            
        //    WriteOutputDel del = new WriteOutputDel(WriteOut);
        //    try {
        //        if (status.IsCompleted) {
        //            //Try to send all the batch data;
        //            Invoke(del, "\r\n Sending Batch file");
        //            Application.DoEvents();
        //            Thread.Sleep(sendInterval);
        //            Util.SendBatchData();
        //        } 
        //        gpsSvc.EndConnected(status);
        //    } catch (Exception ex) {
        //        Invoke(del, ex.Message);
        //    } 
        //}

        private void LogData(string line) {
            if (swLogFile != null) {
                swLogFile.WriteLine(line);
                swLogFile.Flush();
            } else {
                WriteOut(line);
            }
        }

        private void mnuConfigure_Click(object sender, EventArgs e) {
            Config frmConfig = new Config();
            frmConfig.ShowDialog();
            ReadConfig();
        }

        private void mnuExit_Click(object sender, EventArgs e) {
            try {
                try { t.Abort(); } catch { }
                sp.Close();
                this.Close();
                Application.Exit();
            } catch { }
        }

        private void mnuClearLog_Click(object sender, EventArgs e) {
            try {
                Util.ClearLogFile(Util.GetLogFile());
            } catch { }
        }

        private void MainFrm_KeyDown(object sender, KeyEventArgs e) {
            if ((e.KeyCode == System.Windows.Forms.Keys.F1)) {
                // Soft Key 1
                // Not handled when menu is present.
            }
            if ((e.KeyCode == System.Windows.Forms.Keys.F2)) {
                // Soft Key 2
                // Not handled when menu is present.
            }
            if ((e.KeyCode == System.Windows.Forms.Keys.Up)) {
                // Up
            }
            if ((e.KeyCode == System.Windows.Forms.Keys.Down)) {
                // Down
            }
            if ((e.KeyCode == System.Windows.Forms.Keys.Left)) {
                // Left
            }
            if ((e.KeyCode == System.Windows.Forms.Keys.Right)) {
                // Right
            }
            if ((e.KeyCode == System.Windows.Forms.Keys.Enter)) {
                // Enter
            }
            if ((e.KeyCode == System.Windows.Forms.Keys.D1)) {
                // 1
            }
            if ((e.KeyCode == System.Windows.Forms.Keys.D2)) {
                // 2
            }
            if ((e.KeyCode == System.Windows.Forms.Keys.D3)) {
                // 3
            }
            if ((e.KeyCode == System.Windows.Forms.Keys.D4)) {
                // 4
            }
            if ((e.KeyCode == System.Windows.Forms.Keys.D5)) {
                // 5
            }
            if ((e.KeyCode == System.Windows.Forms.Keys.D6)) {
                // 6
            }
            if ((e.KeyCode == System.Windows.Forms.Keys.D7)) {
                // 7
            }
            if ((e.KeyCode == System.Windows.Forms.Keys.D8)) {
                // 8
            }
            if ((e.KeyCode == System.Windows.Forms.Keys.D9)) {
                // 9
            }
            if ((e.KeyCode == System.Windows.Forms.Keys.F8)) {
                // *
            }
            if ((e.KeyCode == System.Windows.Forms.Keys.D0)) {
                // 0
            }
            if ((e.KeyCode == System.Windows.Forms.Keys.F9)) {
                // #
            }

        }

    }
}