using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Drawing;
using System.Text;
using System.IO;
using MasterEdit;
using System.Collections.Specialized;

public partial class _Default : System.Web.UI.Page 
{
    public locationList listLocation = new locationList();
    protected void Page_Load(object sender, EventArgs e)
    {
        //if (hdnUser.Value == "") { }
        //try
        //{
        //    hdnUser.Value = Request.QueryString.Get("LoginID");
        //    Response.Redirect("maplocation.aspx");
        //}
        //catch { }
        
        string id=checkuser();
        string initLat = "0", initLng = "0";
        if (id != "")
        {
            hdnPath.Value = System.AppDomain.CurrentDomain.BaseDirectory.ToString() + "Data\\log.csv";
            //read location data
            TextReader fileReader = new StreamReader(System.AppDomain.CurrentDomain.BaseDirectory.ToString() + @"\Data\location-" + userFilename + ".csv");
            try
            {
                string line = fileReader.ReadLine();
                string[] bits;
                if (!IsPostBack)
                {
                    //delete when done
                    lstTimePoint.Items.Clear();
                    lstBusStop.Items.Clear();
                    lstInterchange.Items.Clear();
                }
                if (line == null)
                {
                    bits = "".Split(',');
                }
                else
                {
                    bits = line.Split(',');
                }
                while (bits[0] != "")
                {
                    addLocation(bits[0], bits[1], Convert.ToDouble(bits[3]), Convert.ToDouble(bits[4]), bits[2]);
                    if (!IsPostBack)
                    {
                        ListItem addList = new ListItem();
                        addList.Text = bits[0];
                        addList.Value = bits[1] + "~" + bits[3] + "~" + bits[4];
                        if (bits[2] == "Time Point") lstTimePoint.Items.Add(addList);
                        else if (bits[2] == "Bus Stop") lstBusStop.Items.Add(addList);
                        else if (bits[2] == "Interchange")
                        {
                            lstInterchange.Items.Add(addList);
                            if (initLng == "0" || initLat == "0")
                            {
                                initLat = Convert.ToString(bits[3]);
                                initLng = Convert.ToString(bits[4]);
                                hdnInitLat.Value = bits[3];
                                hdnInitLng.Value = bits[4];
                            }
                        }
                    }
                    line = fileReader.ReadLine();
                    if (line == null)
                    {
                        bits = "".Split(',');
                    }
                    else
                    {
                        bits = line.Split(',');
                    }
                }
                fileReader.Close();
            }
            catch
            {
                //erase data
                FileStream stream = new FileStream(System.AppDomain.CurrentDomain.BaseDirectory.ToString() + @"\Data\location-" + userFilename + ".csv", FileMode.Create);
                stream.Close();
                fileReader.Close();
            }
            lblNotification.Text = "";
            if (!IsPostBack)
            {
                //empty the .csv file
                //FileStream stream = new FileStream(System.AppDomain.CurrentDomain.BaseDirectory.ToString() + @"\Data\location.csv", FileMode.Create);
                //stream.Close();
                hdnSetCoorIndex.Value = "Marker";
                drawMarker("initialLatLng(" + initLat + "," + initLng + ");");
                //Page.RegisterStartupScript("myscript", "<script language=JavaScript>DrawMap();dragMarker(4,0, '', '')</script>");
            }
            ddlListType.SelectedIndex = 0;
            findOldFile(System.AppDomain.CurrentDomain.BaseDirectory.ToString() + "FileSave\\");
        }
        else Response.Redirect("login.aspx");
    }
    string userID,id,userFilename;
    public string checkuser() {
        string[] bits;
        TextReader fileReader;
        string line;
        HttpCookie cookie = Request.Cookies["Preferences"];
        if (cookie == null || cookie["Name"] == "") Response.Redirect("login.aspx");
        else id=cookie["Name"];
         // = Request.QueryString.Get("LoginID");
        fileReader = new StreamReader(System.AppDomain.CurrentDomain.BaseDirectory.ToString() + @"\Data\user.csv");
        try
        {
            line = fileReader.ReadLine();//line1
            line = fileReader.ReadLine();

            while (line != "" || line != null)
            {
                bits = line.Split(',');
                if (bits[0] == id)
                {
                    userID = bits[2];
                    lblUser.Text = bits[3];
                    userFilename = bits[0];
                    fileReader.Close();
                    return bits[2];
                }
                else line = fileReader.ReadLine();
            }
        }
        catch
        {
            fileReader.Close();
        }
        return "";
    }
    protected void findOldFile(string path)
    {
        DirectoryInfo directory = new DirectoryInfo(path);
        DateTime creationDate, currentDate;
        foreach (FileInfo file in directory.GetFiles())
        {
            creationDate = file.CreationTime;
            currentDate = System.DateTime.Now;
            if ((creationDate.Month < currentDate.Month && creationDate.Day <= currentDate.Day) || (creationDate.Month + 1 < currentDate.Month))
            {
                file.Delete();
            }
        }

    }

    protected void route_Click(object sender, EventArgs e)
    {
        //string id = Request.QueryString.Get("id");
        //if (hdnRoute.Value != "" || hdnReRoute.Value != "")
        //{
        //    id = createUniqueFileName();
        //    string filename = id + "-location.csv";
        //    string path = System.AppDomain.CurrentDomain.BaseDirectory.ToString() + "/FileDatabase/" + filename;
        //    createFile(filename, path);
        //}
        //string source = System.AppDomain.CurrentDomain.BaseDirectory.ToString() + @"\Data\location.csv";
        //string target = System.AppDomain.CurrentDomain.BaseDirectory.ToString() + @"\DataBase\location.csv";
        ////copy
        //System.IO.File.Copy(source, target, true);
        string linkTo = "maproute.aspx";//?loginID=" + userID;
        Response.Redirect(linkTo);
    }
    protected void btnConfirm_Click(object sender, EventArgs e)
    {
        int total = Convert.ToInt16(hdnTotal.Value), errorCount=0;
        string txtError = "", check;
        string path = System.AppDomain.CurrentDomain.BaseDirectory.ToString() + @"\Data\location-" + userFilename + ".csv";
        StreamWriter writeLocation= new StreamWriter(path, true);
        for (int i = 1; i <= total; i++)
        {
                string name = Request.Form["txtName" + i].Trim();
                if (name != "" && Request.Form["hdnLat" + i] != "")
                {
                double lat = Convert.ToDouble(Request.Form["hdnLat" + i]);
                double lng = Convert.ToDouble(Request.Form["hdnLng" + i]);
                
                    check = checkLocationData(name, lat, lng);
                    if (check == "")
                    {
                        try
                        {
                            string desc = Request.Form["txtDesc" + i];
                            string type = Request.Form["ddlType" + i];

                            addLocation(name, desc, lat, lng, type);
                            writeLocation.WriteLine(name + "," + desc + "," + type + "," + lat + "," + lng);

                            ListItem addList = new ListItem();
                            addList.Text = name;
                            addList.Value = desc + "~" + lat + "~" + lng;
                            if (type == "Time Point") lstTimePoint.Items.Add(addList);
                            else if (type == "Bus Stop") lstBusStop.Items.Add(addList);
                            else if (type == "Interchange") lstInterchange.Items.Add(addList);
                        }
                        catch { writeLocation.Close(); }
                    }
                    else
                    {
                        txtError += check + "<br>";
                        errorCount++;
                    }
                }
                else
                {
                    errorCount++;
                }
            
        }
        writeLocation.Close();
        lblNotification.Text = (total - errorCount) + " location(s) is/are added to the list(s).<br>";
        if (txtError != "") lblNotification.Text += "Failed to Add:<br>" + txtError;
        drawMarker("initialLatLng('','');");    
    }
    public string createUniqueName()
    {
        // create a writer and open the file
        DateTime time = DateTime.Now;
        string timeConvert = time + "";
        timeConvert = timeConvert.Replace("/", "");
        timeConvert = timeConvert.Replace(":", "");
        timeConvert = timeConvert.Replace(" ", "");
        timeConvert = timeConvert.Replace("AM", "");
        timeConvert = timeConvert.Replace("PM", "");
        return timeConvert;
    }
    protected void lnkbtnMap_Click(object sender, EventArgs e)
    {
        drawMarker("initialLatLng('','');");
    }
    public void drawMarker(string script) {
        //find all from listbox and put in map
        int numTP = lstTimePoint.Items.Count;
        int numBS = lstBusStop.Items.Count;
        int numI = lstInterchange.Items.Count;
        string locationName, javascriptCode = "resetMarker();DrawMap();"+script+"dragMarker(4,0, '', '');";

        int k = 0;
        for (int i = 0; i < numTP; i++)
        {
            locationName = lstTimePoint.Items[i].Text;
            javascriptCode += addLocationList(locationName,0);
        }
        for (int i = 0; i < numBS; i++) {
            locationName = lstBusStop.Items[i].Text;
            javascriptCode += addLocationList(locationName,1);
        }
        for (int i = 0; i < numI; i++) {
            locationName = lstInterchange.Items[i].Text;
            javascriptCode += addLocationList(locationName,2);
        }
        hdnSetCoorIndex.Value = "Marker";
        Page.RegisterStartupScript("myscript", "<script language=JavaScript>" + javascriptCode + "</script>");
    }
    public void addLocation(string name, string description, double latitude, double longitude, string type) {
        MasterEdit.location addLocation = new MasterEdit.location();
        addLocation.name = name;
        addLocation.latitude = latitude;
        addLocation.longitude = longitude;
        addLocation.description = description;
        addLocation.type = type;
        listLocation.aLocation.Add(addLocation);
    }
    public string addLocationList(string locationName, int type) {
        double lat, lng;
        MasterEdit.location aLocation;
        aLocation = listLocation.aLocationAt(locationName);
        if (aLocation != null)
        {
            lat = aLocation.latitude;
            lng = aLocation.longitude;
            return "dragMarker(" + type + ", " + (type+1) + "," + lat + " , " + lng + ");";
        }
        else return "";
    }
    protected void btnCreate_Click(object sender, EventArgs e)
    {
        if (txtFileName.Text == "")
        {
            Response.Write("<script>alert('Please input a filename.')</script>");
        }
        else
        {
            if (tpCount.Text != "0" || bsCount.Text != "0" || iCount.Text != "0")
            {
                string fileName = txtFileName.Text + ".csv";
                string path = System.AppDomain.CurrentDomain.BaseDirectory.ToString() + "FileSave";
                
                string pathName = @Path.Combine(path, fileName);
                //delete old file if duplicated
                DirectoryInfo directory = new DirectoryInfo(path);
                foreach (FileInfo file in directory.GetFiles())
                {
                    if (file.Name == fileName)
                    {
                        file.Delete();
                    }
                }
                createFile(fileName, pathName);
                string linkTo = Request.ApplicationPath + @"/FileSave/" + fileName;
                //save the file. 
                Response.Redirect(linkTo);
                lblNotification.Text = "Filename: " + fileName + " is saved to your download directory.";
            }
            else
            {
                Response.Write("<script>alert('there is no data')</script>");
            }
        }
        drawMarker("initialLatLng('','');");
    }

    public void createFile(string name, string path)
    {
        string locationName;
        MasterEdit.location aLocation;
        StreamWriter newFile = new StreamWriter(path, true);
        newFile.WriteLine("Map Location");
        newFile.WriteLine();
        newFile.WriteLine();
        newFile.WriteLine("Name,Address,Type,Latitude,Longitude");
        for (int i = 0; i < lstTimePoint.Items.Count; i++)
        {
            locationName=lstTimePoint.Items[i].Text;
            aLocation = listLocation.aLocationAt(locationName);
            newFile.WriteLine(aLocation.name +"," + aLocation.description +","+aLocation.type+","+aLocation.latitude+","+aLocation.longitude);
        }
        for (int i = 0; i < lstBusStop.Items.Count; i++)
        {
            locationName = lstBusStop.Items[i].Text;
            aLocation = listLocation.aLocationAt(locationName);
            newFile.WriteLine(aLocation.name + "," + aLocation.description + "," + aLocation.type + "," + aLocation.latitude + "," + aLocation.longitude);
        }
        for (int i = 0; i < lstInterchange.Items.Count; i++)
        {
            locationName = lstInterchange.Items[i].Text;
            aLocation = listLocation.aLocationAt(locationName);
            newFile.WriteLine(aLocation.name + "," + aLocation.description + "," + aLocation.type + "," + aLocation.latitude + "," + aLocation.longitude);
        }
            newFile.Close();
    }
    protected void btnLoad_Click(object sender, EventArgs e)
    {
        try
        {
            // Get the HttpFileCollection
            if (FileUploadSingle.HasFile)
            {
                string path = Server.MapPath("~/FileUpload/");
                string fileName = Path.GetFileName(FileUploadSingle.PostedFile.FileName);
                // check for the valid file extension
                string fileExtension = Path.GetExtension(fileName).ToLower();
                if (fileExtension.Equals(".csv"))
                {
                    // now save the file to the disk
                    FileUploadSingle.SaveAs(path + fileName);
                    string loadpath = System.AppDomain.CurrentDomain.BaseDirectory.ToString() + "FileUpload\\";
                    string error = loadData(fileName, path);
                    deleteFile(fileName, path);

                    lblNotification.Text = "Filename: " + fileName + " is loaded.<br>";
                    if (error != "") lblNotification.Text += error;
                }
                else
                {
                    Response.Write("<script>alert('Only accept .csv files')</script>");
                }
            }
            else
            {
                Response.Write("<script>alert('Please select the file')</script>");
            }
        }
        catch (Exception ex)
        {
            Response.Write("<script>alert('Fail to load the file')</script>");
        }
        drawMarker("initialLatLng('','');");
    }
    public string loadData(string filename, string path)
    {
        string check, txtError = "";
        try
        {
            TextReader fileReader = new StreamReader(path + filename);
            //clear all in list
            if (chkMerge.Checked == false)
            {
                lstBusStop.Items.Clear();
                lstTimePoint.Items.Clear();
                lstInterchange.Items.Clear();

                listLocation.aLocation.Clear();
                //empty the .csv file
                FileStream stream = new FileStream(System.AppDomain.CurrentDomain.BaseDirectory.ToString() + @"\Data\location-" + userFilename + ".csv", FileMode.Create);
                stream.Close();
            }
            string path2 = System.AppDomain.CurrentDomain.BaseDirectory.ToString() + @"\Data\location-" + userFilename + ".csv";
            StreamWriter writeLocation = new StreamWriter(path2, true);
            
            string title = fileReader.ReadLine();
            title = fileReader.ReadLine();
            string[] bits = title.Split(',');
            string line = fileReader.ReadLine();
            line = fileReader.ReadLine();
            string[] info = line.Split(',');
            if (info[0] == "Name" && info[1] == "Address" && info[2] == "Type" && info[3] == "Latitude" && info[4] == "Longitude")
            {
                string line2 = fileReader.ReadLine();
                bits = line2.Split(',');
                while (bits[0] != "")
                {
                    check = checkLocationData(bits[0], Convert.ToDouble(bits[3]), Convert.ToDouble(bits[4]));
                    if (check == "")
                    {
                        ListItem addList = new ListItem();
                        addList.Text = bits[0];
                        addList.Value = bits[1] + "~" + bits[3] + "~" + bits[4] ;
                        if (bits[2].ToLower() == "time point")
                        {
                            addLocation(bits[0], bits[1], Convert.ToDouble(bits[3]), Convert.ToDouble(bits[4]), bits[2]);
                            lstTimePoint.Items.Add(addList);  
                        }
                        else if (bits[2].ToLower() == "bus stop")
                        {
                            addLocation(bits[0], bits[1], Convert.ToDouble(bits[3]), Convert.ToDouble(bits[4]), bits[2]);
                            lstBusStop.Items.Add(addList);
                        }
                        else if (bits[2].ToLower() == "interchange")
                        {
                            addLocation(bits[0], bits[1], Convert.ToDouble(bits[3]), Convert.ToDouble(bits[4]), bits[2]);
                            lstInterchange.Items.Add(addList);
                        }
                        writeLocation.WriteLine(bits[0] + "," + bits[1] + "," + bits[2] + "," + Convert.ToDouble(bits[3]) + "," + Convert.ToDouble(bits[4]));
                    }
                    else txtError += check + "<br>";
                    //new line
                    line2 = fileReader.ReadLine();
                    if (line2 != null)
                    {
                        bits = line2.Split(',');
                    }
                    else
                    {
                        bits = "".Split(',');
                    }
                }
                try
                {
                    //loadDataRoute(fileReader);
                }
                catch { }
                //check whether got route list
                writeLocation.Close();
                fileReader.Close();
            }
            else
            {
                writeLocation.Close();
                fileReader.Close();
                try
                {
                    deleteFile(filename, path);
                }
                catch { }
                Response.Write("<script>alert('Invalid file format')</script>");
            }
        }
        catch
        {
            try
            {
                deleteFile(filename, path);
            }
            catch { }
            Response.Write("<script>alert('Fail to read the file')</script>");
        }
        return txtError;
    }
    public void deleteFile(string fileName, string path)
    {
        //delete file
        DirectoryInfo directory = new DirectoryInfo(path);
        foreach (FileInfo file in directory.GetFiles())
        {
            if (file.Name == fileName)
            {
                file.Delete();
            }
        }
    }
    public string checkLocationData(string locationName, double latitude, double longitude)
    {
        MasterEdit.location aLocation;
        aLocation = listLocation.aLocationAt(locationName);
        if (aLocation != null)
        {
            return "Duplicate Location name: "+ locationName;
        }
        aLocation = listLocation.aLocationAt(latitude, longitude);
        if (aLocation != null)
        {
            return "Duplicate Coordinate at Location name: " + locationName;
        }
        else return "";
    }
    protected void btnEdit_Click(object sender, EventArgs e)
    {
        MasterEdit.location bLocation, aLocation;
        aLocation = listLocation.aLocationAt(hdnNameTemp.Value);
        listLocation.aLocation.Remove(aLocation);
        string tempName = aLocation.name.Trim();
        string tempDesc = aLocation.description.Trim();
        double tempLat = aLocation.latitude;
        double tempLng = aLocation.longitude;
        string tempType = aLocation.type;
        FileStream stream = new FileStream(System.AppDomain.CurrentDomain.BaseDirectory.ToString() + @"\Data\location-" + userFilename + ".csv", FileMode.Create);
        stream.Close();
        string path = System.AppDomain.CurrentDomain.BaseDirectory.ToString() + @"\Data\location-" + userFilename + ".csv";
        StreamWriter writeLocation = new StreamWriter(path, true);
        for (int i = 0; i < listLocation.aLocation.Count; i++)
        {
            bLocation = listLocation.aLocation[i];
            writeLocation.WriteLine(bLocation.name + "," + bLocation.description + "," + bLocation.type + "," + bLocation.latitude + "," + bLocation.longitude);
        }
        bool exist = false;
        if (hdnTypeTemp.Value != Request.Form["ddlTypeEdit"])
        {
            if (hdnTypeTemp.Value == "Time Point") lstTimePoint.Items.RemoveAt(Convert.ToInt16(hdnTypeNumTemp.Value));
            else if (hdnTypeTemp.Value == "Bus Stop") lstBusStop.Items.RemoveAt(Convert.ToInt16(hdnTypeNumTemp.Value));
            else lstInterchange.Items.RemoveAt(Convert.ToInt16(hdnTypeNumTemp.Value));
            exist = true;
        }
        string txtError = "", check;
        string name = Request.Form["txtNameEdit"].Trim();
            double lat = Convert.ToDouble(Request.Form["hdnLatEdit"]);
            double lng = Convert.ToDouble(Request.Form["hdnLngEdit"]);

            check = checkLocationData(name, lat, lng);
            if (check == "")
            {
                string desc = Request.Form["txtDescEdit"].Trim();
                string type = Request.Form["ddlTypeEdit"];

                addLocation(name, desc, lat, lng, type);
                writeLocation.WriteLine(name + "," + desc + "," + type + "," + lat + "," + lng);
                if (exist == false)
                {
                    if (type == "Time Point")
                    {
                        lstTimePoint.Items[Convert.ToInt16(hdnTypeNumTemp.Value)].Text = name;
                        lstTimePoint.Items[Convert.ToInt16(hdnTypeNumTemp.Value)].Value = desc + "~" + lat + "~" + lng;
                    }
                    else if (type == "Bus Stop")
                    {
                        lstBusStop.Items[Convert.ToInt16(hdnTypeNumTemp.Value)].Text = name;
                        lstBusStop.Items[Convert.ToInt16(hdnTypeNumTemp.Value)].Value = desc + "~" + lat + "~" + lng;
                    }
                    else if (type == "Interchange")
                    {
                        lstInterchange.Items[Convert.ToInt16(hdnTypeNumTemp.Value)].Text = name;
                        lstInterchange.Items[Convert.ToInt16(hdnTypeNumTemp.Value)].Value = desc + "~" + lat + "~" + lng;
                    }
                }
                else {
                    ListItem addList = new ListItem();
                    addList.Text = name;
                    addList.Value = desc + "~" + lat + "~" + lng;
                    if (type == "Time Point") lstTimePoint.Items.Add(addList);
                    else if (type == "Bus Stop") lstBusStop.Items.Add(addList);
                    else if (type == "Interchange") lstInterchange.Items.Add(addList);
                }
            }
            else {
                txtError= check +"<br>";
                string desc = tempDesc;
                string type = tempType;

                addLocation(tempName, tempDesc, tempLat, tempLng, tempType);
                writeLocation.WriteLine(tempName + "," + tempDesc + "," + tempType + "," + tempLat + "," + tempLng);

                ListItem addList = new ListItem();
                addList.Text = tempName;
                addList.Value = tempDesc + "~" + tempLat + "~" + tempLng;
                if (tempType == "Time Point") lstTimePoint.Items.Add(addList);
                else if (tempType == "Bus Stop") lstBusStop.Items.Add(addList);
                else if (tempType == "Interchange") lstInterchange.Items.Add(addList);
           }
        
        writeLocation.Close();

        lblNotification.Text =  "location: "+name+" is edited.<br>";
        if (txtError != "") lblNotification.Text += "Failed to edit:<br>" + txtError;
        ddlListType.SelectedIndex = 0;
        drawMarker("initialLatLng('','');");
    }
    protected void btnEditLocation_Click(object sender, EventArgs e)
    {
        int index = Convert.ToInt16(dllIndex.Value), num = 0;
        string locationName = "";
        MasterEdit.location aLocation;
        if (index == 0 && lstTimePoint.SelectedIndex >= 0)
        {
            num = lstTimePoint.SelectedIndex;
            locationName = lstTimePoint.SelectedItem.Text;
        }
        else if (index == 1 && lstBusStop.SelectedIndex >= 0)
        {
            num = lstBusStop.SelectedIndex;
            locationName = lstBusStop.SelectedItem.Text;
        }
        else if (index == 2 && lstInterchange.SelectedIndex >= 0)
        {
            num = lstInterchange.SelectedIndex;
            locationName = lstInterchange.SelectedItem.Text;
        }
        if (locationName != "")
        {
            aLocation = listLocation.aLocationAt(locationName);

            txtNameEdit.Text = aLocation.name;
            hdnLatEdit.Value = Convert.ToString(aLocation.latitude);
            hdnLngEdit.Value = Convert.ToString(aLocation.longitude);
            txtDescEdit.Text = aLocation.description;
            if (aLocation.type == "Time Point") ddlTypeEdit.SelectedIndex = 0;
            else if (aLocation.type == "Bus Stop") ddlTypeEdit.SelectedIndex = 1;
            else ddlTypeEdit.SelectedIndex = 2;

            hdnNameTemp.Value = aLocation.name;
            hdnTypeTemp.Value = aLocation.type;
            hdnTypeNumTemp.Value = Convert.ToString(num);
            drawMarker("editLocation_Click();");
        }
        else drawMarker("initialLatLng('','');");
    }
    protected void btnDeleteLocation_Click(object sender, EventArgs e)
    {
        int index = Convert.ToInt16(dllIndex.Value);
        string locationName = "";
        MasterEdit.location aLocation,bLocation;
        if (index == 0 && lstTimePoint.SelectedIndex >= 0) locationName = lstTimePoint.SelectedItem.Text;
        else if (index == 1 && lstBusStop.SelectedIndex >= 0) locationName = lstBusStop.SelectedItem.Text;
        else if (index == 2 && lstInterchange.SelectedIndex >= 0) locationName = lstInterchange.SelectedItem.Text;
        if (locationName != "")
        {
            aLocation = listLocation.aLocationAt(locationName);
            listLocation.aLocation.Remove(aLocation);
            FileStream stream = new FileStream(System.AppDomain.CurrentDomain.BaseDirectory.ToString() + @"\Data\location-" + userFilename + ".csv", FileMode.Create);
            stream.Close();
            string path = System.AppDomain.CurrentDomain.BaseDirectory.ToString() + @"\Data\location-" + userFilename + ".csv";
            StreamWriter writeLocation = new StreamWriter(path, true);
            for (int i = 0; i < listLocation.aLocation.Count; i++)
            {
                bLocation = listLocation.aLocation[i];
                writeLocation.WriteLine(bLocation.name + "," + bLocation.description + "," + bLocation.type + "," + bLocation.latitude + "," + bLocation.longitude);
            }
            writeLocation.Close();
            if (aLocation.type == "Time Point")
            {
                lstTimePoint.Items.RemoveAt(lstTimePoint.SelectedIndex);
            }
            else if (aLocation.type == "Bus Stop")
            {
                lstBusStop.Items.RemoveAt(lstBusStop.SelectedIndex);
            }
            else
            {
                lstInterchange.Items.RemoveAt(lstInterchange.SelectedIndex);
            }
            listLocation.aLocation.Remove(aLocation);
            lblNotification.Text = "Location: " + locationName +" is removed.";
        }
        ddlListType.SelectedIndex = 0;
        drawMarker("initialLatLng('','');");
    }
    protected void lnkLogout_Click(object sender, EventArgs e)
    {
        userID = "";
        string path = System.AppDomain.CurrentDomain.BaseDirectory.ToString() + @"\Data\log.csv";
        System.IO.StreamWriter writeLog = new System.IO.StreamWriter(path, true);
        try
        {
            DateTime time = DateTime.Now;
            writeLog.WriteLine(id+"," + time.Date + "," + time.TimeOfDay + ",logout");
        }
        catch { }
        writeLog.Close();
        HttpCookie cookie = Request.Cookies["Preferences"];
        cookie.Expires = DateTime.Now.AddDays(-1d);
        Response.Cookies.Add(cookie);
        Response.Redirect("login.aspx");
    }
}