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;

public partial class login : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    }
    protected void btnLogin_Click(object sender, EventArgs e)
    {
        if (txtUsername.Text.Trim() == "") lblError.Text = "Please input username";
        else if (txtPassword.Text == "") lblError.Text = "Please input password";
        else
        {
            string id = checkUser(txtUsername.Text.Trim(), txtPassword.Text);
            if (id != "") Response.Redirect("maplocation.aspx");
            //?loginID=" + id);
            else lblError.Text = "Wrong username or password";
        }
    }
    public string checkUser(string username, string password)
    {
        TextReader fileReader = new StreamReader(System.AppDomain.CurrentDomain.BaseDirectory.ToString() + @"\Data\user.csv");
        try
        {
            string line = fileReader.ReadLine();//line1
            line = fileReader.ReadLine();

            while (line != "" || line != null)
            {
                string[] bits = line.Split(',');
                if (bits[0] == username && bits[1] == password) {
                    fileReader.Close();
                    writeLog(bits[0]);
                    return bits[2];
                }
                else line = fileReader.ReadLine();
            }
        }
        catch
        {
            fileReader.Close();
        }
        return "";
    }
    public void writeLog(string name) {
        //checkLog();
        string path = System.AppDomain.CurrentDomain.BaseDirectory.ToString() + @"\Data\log.csv";
        StreamWriter writeLog= new StreamWriter(path, true);
        try {
            DateTime time = DateTime.Now;
            HttpCookie cookie = new HttpCookie("Preferences");       
            cookie["Name"] = name;
            cookie.Expires = DateTime.Now.AddDays(1);
            Response.Cookies.Add(cookie);
            writeLog.WriteLine(name + ","+ time.Date + "," + time.TimeOfDay + ",login");
        }
        catch {}
        writeLog.Close(); 
    }
    public void checkLog() {
        string path = System.AppDomain.CurrentDomain.BaseDirectory.ToString() + @"\Data\log.csv";
        StreamWriter writeLog = new StreamWriter(path, true);
        try
        {
            DateTime time = DateTime.Now;
            writeLog.WriteLine("," + time.Date + "," + time.TimeOfDay + ",logout");
        }
        catch { }
        writeLog.Close(); 
    }
}