using System;
using System.Collections.Generic;
using Gtk;

using mCloudAwk;

namespace mCloudGui {

	public partial class MainWindow: Gtk.Window
	{	 
		private const string new_text = "new ...";
		private IMCloudAwk MCA;

		public MainWindow (): base (Gtk.WindowType.Toplevel)
		{
			Build ();
			this.MCA = new MCloudMgr ();
			TConnection[] Conns = MCA.GetConnections ();
			foreach (var Conn in Conns) {
				this.ConnectionSelection.AppendText (Conn.Name);
			}
			this.ConnectionSelection.AppendText (new_text);
			this.ConnectionSelection.Active = 0;
		}

		protected void OnDeleteEvent (object sender, DeleteEventArgs a)
		{
			MCA.Dispose ();
			Application.Quit ();
			a.RetVal = true;
		}

		protected void TestButtonPressed (object sender, EventArgs e)
		{
			// extract connection name
			string connection_name = this.ConnectionSelection.ActiveText;

			// TODO: implement ssh connection test
			int r = this.MCA.TestConnection (connection_name);

			if (r == MCloudMgr.SSH_NO_PW || r == MCloudMgr.SSH_WITH_PW) {
				// everything fine
			} else {
				GtkUtil.MessageBox.Show("Keine ssh-Verbindung möglich");
				return;
			}

			// if connection is new, add it to configuration
			if (connection_name == new_text) {

				// build connection object
				connection_name = this.UserField.Text + "@" + this.ServerField.Text;
				TConnection C = new TConnection {
					Name = connection_name,
					User = this.UserField.Text,
					Server = this.ServerField.Text,
					Password = this.PasswordField.Text
				};
				this.MCA.AddConnection (C);
			}

			// TODO: check login w/o password
			bool login_without_password_possible = false;

			if (!login_without_password_possible) {

				// check existence of public key file
				if (!System.IO.File.Exists ("/home/monodev/.ssh/id_dsa.pub")) {

					// TODO: create public key file
					using (System.IO.StreamWriter File = new System.IO.StreamWriter ("/home/monodev/.ssh/id_dsa.pub", false)) {
						File.WriteLine ("Hallo");
					}
				}
				// TODO: scp file to target
				// TODO: append it to .ssh/authorized_keys
				// TODO: test login w/o password again
			}
			// TODO:  next configution step
			this.Destroy ();
			MCA.Dispose ();
			DirectorySelectionWin DirWin = new DirectorySelectionWin ();
			DirWin.Show ();

		}

		protected void ConnectionSelectionChanged (object sender, EventArgs e)
		{
			if (((Gtk.ComboBox)sender).ActiveText.IndexOf ('@') > 0) {
				// grey input fields
				this.ServerField.Sensitive = false;
				this.PasswordField.Sensitive = false;
				this.UserField.Sensitive = false;
				
				// activate delete button
				this.DeleteConnectionBtn.Sensitive = true;
			} else {
				// activate input fields
				this.ServerField.Sensitive = true;
				this.PasswordField.Sensitive = true;
				this.UserField.Sensitive = true;

				// deactivate delete button
				this.DeleteConnectionBtn.Sensitive = false;
			}
		}

		protected void DeleteConnectionPressed (object sender, EventArgs e)
		{
			string connection = this.ConnectionSelection.ActiveText;
			if (this.ConnectionSelection.ActiveText.IndexOf ('@') == -1)
				throw new Exception ("Cannot remove default entry");
			int connPos = this.ConnectionSelection.Active;
			this.ConnectionSelection.Active = connPos+1;
			this.ConnectionSelection.RemoveText (connPos);
			this.MCA.DeleteConnection (connection);
		}
	}
}