using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using ComponentFactory.Krypton.Toolkit;
using FacebookMessenger.Properties;
using System.ComponentModel;
using agsXMPP;
using FacebookMessenger.Windows;

namespace FacebookMessenger
{
    partial class AppController : ApplicationContext
    {
        //Variables
        static AppController AppControllerSingleton = null;
        public HiddenWindow HiddenWindow = null;
        public LoginWindow LoginWindow = null;
        static XmppClientConnection Connection = new XmppClientConnection();

        //Delegates
        delegate void OnMessageDelegate(object sender, agsXMPP.protocol.client.Message msg);
        delegate void OnPresenceDelegate(object sender, agsXMPP.protocol.client.Presence Presence);

        public AppController()
        {

            HiddenWindow = new HiddenWindow();
            HiddenWindow.Visible = false;
            this.MainForm = HiddenWindow;

            HiddenWindow.Load += new EventHandler(HiddenWindow_Load);
        }

        public void HiddenWindow_Load(Object sender, EventArgs e)
        {
            InitializeConnectionSettings();
            ShowLoginWindow();
        }

        public void ShowLoginWindow()
        {
            LoginWindow = new LoginWindow();
            LoginWindow.FormClosed += new FormClosedEventHandler(LoginWindowExithandler);
            LoginWindow.Show();
        }

        public void Login(string Username, string Password) //Sent from LoginWindow
        {
            Connection.Username = Username;
            Connection.Password = Password;
            LoginWindow.ActiveForm.Text = String.Format("{0} - Logging In", Settings.Default.ApplicationTitle);
            Connection.Open();
        }


        public void LoginWindowExithandler(object sender,FormClosedEventArgs Arguments)
        {
            Application.Exit();
        }

        #region On* Callbacks
        private void OnRosterStart(object Sender)
        {
            if (LoginWindow.ActiveForm.InvokeRequired)
            {
                LoginWindow.ActiveForm.BeginInvoke(new ObjectHandler(OnRosterStart), new object[] { Sender });
                return;
            }
            LoginWindow.ActiveForm.Text = String.Format("{0} - Roster Started", Settings.Default.ApplicationTitle);
        }

        private void XmppCon_OnRosterItem(object sender, agsXMPP.protocol.iq.roster.RosterItem item)
        {}

        private void OnRosterEnd(object Sender)
        {
            if (LoginWindow.ActiveForm.InvokeRequired)
            {
                LoginWindow.ActiveForm.BeginInvoke(new ObjectHandler(OnRosterEnd), new object[] { Sender });
                return;
            }
            LoginWindow.ActiveForm.Text = String.Format("{0} - Roster Ended", Settings.Default.ApplicationTitle);
        }

        private void OnLogin(object Sender)
        {
            if(LoginWindow.ActiveForm.InvokeRequired)
            {
                LoginWindow.ActiveForm.BeginInvoke(new ObjectHandler(OnLogin), new object[] { Sender });
                return;
            }
            LoginWindow.ActiveForm.Text = String.Format("{0} - Fetching Contacts", Settings.Default.ApplicationTitle);
        }

        private void OnAuthError(object Sender, agsXMPP.Xml.Dom.Element Element)
        {
            if (LoginWindow.ActiveForm.InvokeRequired)
            {
                // Windows Forms are not Thread Safe, we need to invoke this :(
                // We're not in the UI thread, so we need to call BeginInvoke
                LoginWindow.ActiveForm.BeginInvoke(new XmppElementHandler(OnAuthError), new object[]{Sender, Element});
                return;
            }

            if (Connection.XmppConnectionState != XmppConnectionState.Disconnected)
            {
                Connection.Close();
            }
            MessageBox.Show("Authentication Error!\r\nWrong password or username.","Error",MessageBoxButtons.OK,MessageBoxIcon.Exclamation,MessageBoxDefaultButton.Button1);
            LoginWindow.EnableControlls(true);
        }

        private void OnPresence(object sender, agsXMPP.protocol.client.Presence Presence)
        {}

        #endregion

        public void InitializeConnectionSettings()
        {
            Connection.Server = Settings.Default.FacebookChatServer;
            Connection.Port = 5222;

            //Assign Delegates
            //Connection.OnRosterEnd += new ObjectHandler(OnRosterEnd);
            //Connection.OnRosterItem += new agsXMPP.XmppClientConnection.RosterHandler(OnRosterItem);
            Connection.OnRosterStart    += new ObjectHandler(OnRosterStart);
            Connection.OnLogin          += new ObjectHandler(OnLogin);
            //Connection.OnMessage
            Connection.OnPresence       += new agsXMPP.protocol.client.PresenceHandler(OnPresence);
            Connection.OnAuthError      += new XmppElementHandler(OnAuthError);

            //Uneeded Atm
            //Connection.OnAgentEnd
            //Connection.OnAgentItem
            //Connection.OnAgentStart
            //Connection.OnBinded
            //Connection.OnClose
            //Connection.OnError
            //Connection.OnIq
            //Connection.OnPasswordChanged
            //Connection.OnReadSocketData
            //Connection.OnReadXml
            //Connection.OnRegistered
            //Connection.OnRegisterError
            //Connection.OnRegisterInformation
            //Connection.OnSaslEnd
            //Connection.OnSaslStart
            //Connection.OnSocketError
            //Connection.OnStreamError
            //Connection.OnWriteSocketData
            //Connection.OnWriteXml
            //Connection.OnXmppConnectionStateChanged
        }

        /*
         * Used to get a static instacne of the AppController
        **/
        public static AppController Instance
        {
            get
            {
                if (AppControllerSingleton == null)
                {
                    AppControllerSingleton = new AppController();
                }
                return AppControllerSingleton;
            }
        }
    }
}