From 66be0fdd579050375421ad54dc25cf35bac0845c Mon Sep 17 00:00:00 2001
From: Roy Ben Shabat <Roy.mail.net@gmail.com>
Date: Tue, 15 Dec 2020 16:52:30 +0200
Subject: Implemented several fallbacks to PPC update failure !

---
 .../Tango.PPC.UI/ViewModels/MachineUpdateViewVM.cs | 34 +++++++++++++++++++++-
 1 file changed, 33 insertions(+), 1 deletion(-)

(limited to 'Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModels')

diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModels/MachineUpdateViewVM.cs b/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModels/MachineUpdateViewVM.cs
index 613c70809..5fe153ee9 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModels/MachineUpdateViewVM.cs
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/ViewModels/MachineUpdateViewVM.cs
@@ -17,8 +17,11 @@ using Tango.Explorer;
 using Tango.Integration.ExternalBridge;
 using Tango.PMR.FirmwareUpgrade;
 using Tango.PPC.Common;
+using Tango.PPC.Common.Application;
 using Tango.PPC.Common.ExternalBridge;
 using Tango.PPC.Common.MachineUpdate;
+using Tango.PPC.Common.Navigation;
+using Tango.PPC.Common.Notifications;
 using Tango.PPC.Common.Publish;
 using Tango.PPC.Common.Web;
 using Tango.PPC.Shared.RemoteUpgrade;
@@ -121,7 +124,7 @@ namespace Tango.PPC.UI.ViewModels
 
         #region Constructors
 
-        public MachineUpdateViewVM(IMachineUpdateManager machineUpdateManager, IPPCExternalBridgeService externalBridge)
+        public MachineUpdateViewVM(IMachineUpdateManager machineUpdateManager, IPPCExternalBridgeService externalBridge, IPPCApplicationManager applicationManager, INavigationManager navigationManager, INotificationProvider notificationProvider)
         {
             MachineUpdateManager = machineUpdateManager;
             externalBridge.RegisterRequestHandler(this);
@@ -142,6 +145,11 @@ namespace Tango.PPC.UI.ViewModels
             });
 
             machineUpdateManager.UpdateAvailable += MachineUpdateManager_UpdateAvailable;
+
+            NavigationManager = navigationManager;
+            NotificationProvider = notificationProvider;
+            ApplicationManager = applicationManager;
+            ApplicationManager.UpdaterFailed += ApplicationManager_UpdaterFailed;
         }
 
         #endregion
@@ -565,6 +573,30 @@ namespace Tango.PPC.UI.ViewModels
 
         #endregion
 
+        #region Updater Failed
+
+        private void ApplicationManager_UpdaterFailed(object sender, EventArgs e)
+        {
+            InvokeUI(async () =>
+            {
+                try
+                {
+                    await NavigationManager.NavigateTo(NavigationView.MachineUpdateView);
+                    await NavigateTo(MachineUpdateView.UpdateProgressView);
+                    await MachineUpdateManager.RestoreLastDatabaseBackup();
+                    await Task.Delay(5000);
+                    ApplicationManager.Restart();
+                }
+                catch (Exception ex)
+                {
+                    await NotificationProvider.ShowError($"Could not restore the application to its previous state.\n{ex.FlattenMessage()}");
+                    ApplicationManager.Restart();
+                }
+            });
+        }
+
+        #endregion
+
         #region External Bridge Handler
 
         [ExternalBridgeRequestHandlerMethod(typeof(StartRemoteApplicationUpgradeRequest), RequestHandlerLoggingMode.LogRequestName)]
-- 
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