//******************************************************************************************************
//  SubscriberRequestUserControl.xaml.cs - Gbtc
//
//  Copyright © 2010, Grid Protection Alliance.  All Rights Reserved.
//
//  Licensed to the Grid Protection Alliance (GPA) under one or more contributor license agreements. See
//  the NOTICE file distributed with this work for additional information regarding copyright ownership.
//  The GPA licenses this file to you under the MIT License (MIT), the "License"; you may
//  not use this file except in compliance with the License. You may obtain a copy of the License at:
//
//      http://www.opensource.org/licenses/MIT
//
//  Unless agreed to in writing, the subject software distributed under the License is distributed on an
//  "AS-IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Refer to the
//  License for the specific language governing permissions and limitations.
//
//  Code Modification History:
//  ----------------------------------------------------------------------------------------------------
//  05/18/2011 - Magdiel Lorenzo
//       Generated original version of source code.
//
//******************************************************************************************************

using System;
using System.Windows;
using System.Windows.Controls;
using GSF.Communication;
using GSF.ServiceProcess;
using GSF.TimeSeries.Transport.UI.ViewModels;
using GSF.TimeSeries.UI;

namespace GSF.TimeSeries.Transport.UI.UserControls
{
    /// <summary>
    /// Interaction logic for SubscriberRequestUserControl.xaml
    /// </summary>
    public partial class SubscriberRequestUserControl
    {
        #region [ Constructor ]

        /// <summary>
        /// Creates an instance of <see cref="SubscriberRequestUserControl"/> class.
        /// </summary>     
        public SubscriberRequestUserControl()
        {
            InitializeComponent();
        }

        #endregion

        #region [ Properties ]

        private SubscriberRequestViewModel ViewModel
        {
            get
            {
                return Resources["ViewModel"] as SubscriberRequestViewModel;
            }
        }

        #endregion

        #region [ Methods ]

        private void SubscriberRequestUserControl_Loaded(object sender, RoutedEventArgs e)
        {
            // Attach to service connected events
            CommonFunctions.ServiceConnectionRefreshed += CommonFunctions_ServiceConnectionRefreshed;

            // Determine initial state of connectivity
            UpdateServiceConnectivity();
        }

        private void SubscriberRequestUserControl_Unloaded(object sender, RoutedEventArgs e)
        {
            // Detach from service connected events
            CommonFunctions.ServiceConnectionRefreshed -= CommonFunctions_ServiceConnectionRefreshed;

            if ((object)ViewModel != null)
                ViewModel.Dispose();
        }

        private void CommonFunctions_ServiceConnectionRefreshed(object sender, EventArgs eventArgs)
        {
            // Determine new state of connectivity
            UpdateServiceConnectivity();
        }

        private void RemotingClient_ConnectionTerminated(object sender, EventArgs eventArgs)
        {
            IClient remotingClient = sender as IClient;

            // Attempt to detach from the event that just occurred
            if ((object)remotingClient != null)
                remotingClient.ConnectionTerminated -= RemotingClient_ConnectionTerminated;

            // Determine new state of connectivity
            UpdateServiceConnectivity();
        }

        private void UpdateServiceConnectivity()
        {
            WindowsServiceClient serviceClient = CommonFunctions.GetWindowsServiceClient();
            ClientHelper clientHelper = ((object)serviceClient != null) ? serviceClient.Helper : null;
            IClient remotingClient = ((object)clientHelper != null) ? clientHelper.RemotingClient : null;

            if ((object)remotingClient == null || remotingClient.CurrentState != ClientState.Connected)
            {
                // If remoting client is not connected, make the message visible
                Dispatcher.BeginInvoke(new Action(() => ViewModel.ConnectivityMessageVisibility = Visibility.Visible));
            }
            else
            {
                // If remoting client is connected, hide the message and attach to connection terminated event
                remotingClient.ConnectionTerminated += RemotingClient_ConnectionTerminated;
                Dispatcher.BeginInvoke(new Action(() => ViewModel.ConnectivityMessageVisibility = Visibility.Collapsed));
            }
        }

        private void SecurityModeRadioButton_Checked(object sender, RoutedEventArgs e)
        {
            RadioButton tlsRadioButton = sender as RadioButton;
            SecurityMode securityMode;

            if ((object)tlsRadioButton != null)
            {
                if (Enum.TryParse(tlsRadioButton.Content.ToString(), out securityMode))
                    ViewModel.SecurityMode = securityMode;
            }
        }

        private void SelfSignedCertificateGenerator_ProcessException(object sender, EventArgs<Exception> e)
        {
            Exception ex = e.Argument;
            Popup(ex.Message, "Certificate generation error", MessageBoxImage.Error);
            CommonFunctions.LogException(null, "Generate certificate", ex);
        }

        // Display popup message for the user
        private void Popup(string message, string caption, MessageBoxImage image)
        {
            MessageBox.Show(Application.Current.MainWindow, message, caption, MessageBoxButton.OK, image);
        }

        #endregion
    }
}