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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.BL.Entities;
using Tango.Core.Commands;
using Tango.Core.DI;
using Tango.Core.ExtensionMethods;
using Tango.Integration.ExternalBridge;
using Tango.PMR.Integration;
using Tango.PPC.Common;
using Tango.PPC.Common.ExternalBridge;
using Tango.PPC.Common.Navigation;

namespace Tango.PPC.UI.ViewModels
{
    /// <summary>
    /// Represents the external bridge view ViewModel.
    /// </summary>
    /// <seealso cref="Tango.PPC.Common.PPCViewModel" />
    [TangoCreateWhenRegistered]
    public class ExternalBridgeViewVM : PPCViewModel
    {
        private bool _disconnecting;

        #region Properties

        private ExternalBridgeClientConnectedEventArgs _connection;
        /// <summary>
        /// Gets or sets the last client connection event arguments.
        /// </summary>
        public ExternalBridgeClientConnectedEventArgs Connection
        {
            get { return _connection; }
            set { _connection = value; RaisePropertyChangedAuto(); }
        }

        private User _user;
        /// <summary>
        /// Gets or sets the user connected user.
        /// </summary>
        public User User
        {
            get { return _user; }
            set { _user = value
on #region Commands /// <summary> /// Gets or sets the close session command. /// </summary> public RelayCommand CloseSessionCommand { get; set; } #endregion #region Constructors /// <summary> /// Initializes a new instance of the <see cref="ExternalBridgeViewVM"/> class. /// </summary> public ExternalBridgeViewVM() { CloseSessionCommand = new RelayCommand(CloseSession, () => !_disconnecting); } #endregion #region Private Methods /// <summary> /// Closes the current session. /// </summary> private void CloseSession() { LogManager.Log("Disconnecting current external bridge session."); _disconnecting = true; InvalidateRelayCommands(); ExternalBridgeService.DisconnectFullControlSession(); } #endregion #region Override Methods /// <summary> /// Called when the navigation system has navigated to this VM view. /// </summary> public override void OnNavigatedTo() { base.OnNavigatedTo(); _disconnecting = false; InvalidateRelayCommands(); } /// <summary> /// Called when the application has been started. /// </summary> public override void OnApplicationStarted() { ExternalBridgeService.ConnectionRequest += ExternalBridgeService_ConnectionRequest; ExternalBridgeService.FullControlSessionDisconnected += ExternalBridgeService_FullControlSessionDisconnected; } #endregion #region Event Handlers /// <summary> /// Handles the <see cref="ExternalBridgeService.FullControlSessionDisconnected"/> event. /// </summary> /// <param name="sender">The sender.</param> /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param> private void ExternalBridgeService_FullControlSessionDisconnected(object sender, EventArgs e) { if (IsVisible) { LogManager.Log("External bridge client disconnected. Navigating to home module..."); InvokeUI(() => { NavigationManager.NavigateTo(NavigationView.HomeModule); }); } } /// <summary> /// Handles the <see cref="ExternalBridgeService.ConnectionRequest"/> event. /// </summary> /// <param name="sender">The sender.</param> /// <param name="e">The <see cref="ExternalBridgeClientConnectedEventArgs"/> instance containing the event data.</param> private void ExternalBridgeService_ConnectionRequest(object sender, ExternalBridgeClientConnectedEventArgs e) { LogManager.Log($"External bridge connection request received.\n{e.ToJsonString()}"); if (!e.Request.Intent.RequiresPassword() || e.Request.Password == Settings.ExternalBridgePassword) { e.ApplicationInformation.Version = ApplicationManager.Version.ToString(); e.ApplicationInformation.StartupDate = ApplicationManager.StartUpDate.ToUniversalTime().ToString(); e.Confirmed = true; Connection = e; User = Adapter.Users.SingleOrDefault(x => x.Guid == e.Request.UserGuid); if (User != null) { LogManager.Log($"External bridge connection user has been identified as {User.Contact.FullName}"); } if (e.Request.Intent == ExternalBridgeLoginIntent.FullControl) { LogManager.Log("Navigating to external bridge view..."); InvokeUI(() => { NavigationManager.NavigateTo(NavigationView.ExternalBridgeView, false); }); } } else { LogManager.Log("Connection password did not match the machine external bridge password."); } } #endregion } }