Require Safety Level Operations !

1 files changed, 45 insertions, 3 deletions

diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModels/ExternalBridgeViewVM.cs b/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModels/ExternalBridgeViewVM.cs
index 4b7d8978e..538b1f272 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModels/ExternalBridgeViewVM.cs
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModels/ExternalBridgeViewVM.cs
@@ -12,6 +12,7 @@ using Tango.PMR.Integration;
 using Tango.PPC.Common;
 using Tango.PPC.Common.ExternalBridge;
 using Tango.PPC.Common.Navigation;
+using Tango.PPC.UI.Dialogs;
 
 namespace Tango.PPC.UI.ViewModels
 {
@@ -24,6 +25,10 @@ namespace Tango.PPC.UI.ViewModels
     {
         private bool _disconnecting;
 
+        //Full Name, Authentication time
+        private Dictionary<String, DateTime> _authenticatedSafetyUsers;
+        private const int KEEP_SAFETY_AUTHENTICATION_MINUTES = 1;
+
         #region Properties
 
         private ExternalBridgeClientConnectedEventArgs _connection;
@@ -64,6 +69,7 @@ namespace Tango.PPC.UI.ViewModels
         /// </summary>
         public ExternalBridgeViewVM()
         {
+            _authenticatedSafetyUsers = new Dictionary<string, DateTime>();
             CloseSessionCommand = new RelayCommand(CloseSession, () => !_disconnecting);
         }
 
@@ -133,7 +139,7 @@ namespace Tango.PPC.UI.ViewModels
         /// </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)
+        private async void ExternalBridgeService_ConnectionRequest(object sender, ExternalBridgeClientConnectedEventArgs e)
         {
             LogManager.Log($"External bridge connection request received.\n{e.ToJsonString()}");
 
@@ -142,8 +148,6 @@ namespace Tango.PPC.UI.ViewModels
                 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);
@@ -153,6 +157,43 @@ namespace Tango.PPC.UI.ViewModels
                     LogManager.Log($"External bridge connection user has been identified as {User.Contact.FullName}");
                 }
 
+                if (e.Request.RequireSafetyLevelOperations)
+                {
+                    DateTime lastAuthenticationTime;
+                    bool bypassSafetyConfirmation = false;
+
+                    if (_authenticatedSafetyUsers.TryGetValue(e.Request.UserName, out lastAuthenticationTime))
+                    {
+                        if (DateTime.Now < lastAuthenticationTime.AddMinutes(KEEP_SAFETY_AUTHENTICATION_MINUTES))
+                        {
+                            bypassSafetyConfirmation = true;
+                            e.Confirm();
+                            _authenticatedSafetyUsers[e.Request.UserName] = DateTime.Now;
+                        }
+                    }
+
+                    if (!bypassSafetyConfirmation)
+                    {
+                        SafetyLevelOperationsConfirmationViewVM vm = new SafetyLevelOperationsConfirmationViewVM(e);
+                        await NotificationProvider.ShowDialog(vm);
+
+                        if (vm.DialogResult)
+                        {
+                            e.Confirm();
+                            _authenticatedSafetyUsers[e.Request.UserName] = DateTime.Now;
+                        }
+                        else
+                        {
+                            e.Decline("Safety level connection refused by the remote user.");
+                            return;
+                        }
+                    }
+                }
+                else
+                {
+                    e.Confirm();
+                }
+
                 if (e.Request.Intent == ExternalBridgeLoginIntent.FullControl)
                 {
                     LogManager.Log("Navigating to external bridge view...");
@@ -164,6 +205,7 @@ namespace Tango.PPC.UI.ViewModels
             }
             else
             {
+                e.Decline("Connection password did not match the machine external bridge password.");
                 LogManager.Log("Connection password did not match the machine external bridge password.");
             }
         }