using System;
using System.Windows.Forms;
using System.Threading;
using ActiveUp.Net.Mail;
using System.ComponentModel;
using System.Drawing;

namespace GmailNotifier
{
    public partial class Form1 : Form
    {
        private readonly String user = "****************";
        private readonly String pass = "************";
        private BackgroundWorker bgw;

        private Imap4Client imap;
        private Mailbox inbox;


        private int sleeptime = 5;

        public Form1()
        {
            InitializeComponent();
            this.WindowState = FormWindowState.Minimized;
            this.notifyIcon1.Icon = SystemIcons.Shield;
            bgw = new BackgroundWorker();
            bgw.DoWork += (obj, sen) =>
            {
                this.imap = new Imap4Client();
                this.add("Connecting to imap.google.com:993");
                string resp = imap.ConnectSsl("imap.gmail.com", 993);
                this.add("Response: " + resp);
                this.add("Logging in with user " + user);
                resp = imap.Login(user, pass);
                this.add("Response: " + resp);
                this.add("Fetching INBOX");
                this.inbox = imap.SelectMailbox("INBOX");
                this.add("Init DONE");
                int t = this.sleeptime * 1000 + 1;
                while (!((DoWorkEventArgs)sen).Cancel)
                {
                    if (t > this.sleeptime * 1000)
                    {
                        this.imap.Check();
                        this.inbox = imap.ExamineMailbox("INBOX");
                        MessageCollection unseens = this.inbox.SearchParse("UNSEEN");
                        try
                        {
                            this.drawIcon(unseens.Count > 9 ? "9+" : unseens.Count.ToString());
                        }
                        catch (Exception ex)
                        {
                            add(ex.ToString());
                        }
                        /*
                        if (unseens.Count > 0)
                        {
                            this.notifyIcon1.BalloonTipText = unseens.Count.ToString() + " unseen message in your inbox";
                            this.notifyIcon1.ShowBalloonTip(5000);
                        }
                        else
                        {
                            this.drawIcon(0);
                        }*/
                        t = 0;
                    }
                    t += 100;
                    Thread.Sleep(100);
                }
            };
            bgw.RunWorkerAsync();
        }


        private void add(string t)
        {
            if (this.InvokeRequired)
            {
                this.Invoke((MethodInvoker)delegate()
                {
                    listView1.Items.Add(new System.Windows.Forms.ListViewItem(t));
                });
            }
            else
            {
                listView1.Items.Add(new System.Windows.Forms.ListViewItem(t));
            }
        }

        private void exitToolStripMenuItem_Click(object sender, EventArgs e)
        {
            this.WindowState = FormWindowState.Minimized;
            this.bgw.CancelAsync();
            while (this.bgw.IsBusy)
            {
                Thread.Sleep(50);
            }
            this.notifyIcon1.Dispose();
            this.imap.Disconnect();
            Application.Exit();
        }

        private void drawIcon(string c)
        {
            Bitmap square = new Bitmap(16, 16);
            Graphics G = Graphics.FromImage(square);
            Rectangle TextR = new Rectangle(0, 0, 16, 16);
            SolidBrush B = new SolidBrush(Color.DarkBlue);

            G.FillRectangle(B, TextR);
            G.DrawString(c,
                            new Font("Comic Sans MS", 8),
                            Brushes.YellowGreen, TextR, StringFormat.GenericDefault);
            this.notifyIcon1.Icon = Icon.FromHandle(square.GetHicon());
            B.Dispose();
        }
    }
}