using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.Threading.Tasks;
using System.Threading;
using System.IO.Ports;
using System.Xml;
using System.Net;

namespace GmailNotifyDaemon
{
    public partial class Service1 : ServiceBase
    {
        public Service1()
        {
            InitializeComponent();
        }

        protected override void OnStart(string[] args)
        {
            int unread;
            try
            {

                SerialPort port = new SerialPort("COM3", 9600, Parity.None, 8, StopBits.One);
                port.Open();
                //string tostop = "0";
                unread = checkmail();
                while (true)
                {
                    unread = checkmail();
                    //Console.WriteLine("Unread Mails: " + unread.ToString());
                    port.Write(unread.ToString());
                    Thread.Sleep(5000);
                    //Console.WriteLine(port.ReadLine());
                }

            }
            catch (Exception er)
            {
                //Console.WriteLine("Error on Connection to COM4: " + er);
            }
        }

        static int checkmail()
        {
            int nr = 0;
            try
            {
                System.Net.WebClient objClient = new System.Net.WebClient();
                string response;
                // string title;
                //string summary;

                //Creating a new xml document
                XmlDocument doc = new XmlDocument();

                //Logging in Gmail server to get data
                objClient.Credentials = new System.Net.NetworkCredential("litruv@gmail.com", "imD1ff3r3n+");
                //reading data and converting to string
                response = Encoding.UTF8.GetString(objClient.DownloadData(@"https://mail.google.com/mail/feed/atom"));

                response = response.Replace(@"<feed version=""0.3"" xmlns=""http://purl.org/atom/ns#"">", @"<feed>");

                //loading into an XML so we can get information easily
                doc.LoadXml(response);

                //nr of emails

                nr = Int32.Parse(doc.SelectSingleNode(@"/feed/fullcount").InnerText);
                // Console.WriteLine(nr);



            }

            catch (Exception e)
            {
                //Console.WriteLine("Check your network connection. ERROR: " + e);
            }

            return nr;
        }

        protected override void OnStop()
        {
        }
    }
}