1 files changed, 30 insertions, 0 deletions
diff --git a/Software/Visual_Studio/Azure/Tango.AzureUtils/Database/DatabaseManager.cs b/Software/Visual_Studio/Azure/Tango.AzureUtils/Database/DatabaseManager.cs
index 0c2e56edf..cb1a608a8 100644
--- a/Software/Visual_Studio/Azure/Tango.AzureUtils/Database/DatabaseManager.cs
+++ b/Software/Visual_Studio/Azure/Tango.AzureUtils/Database/DatabaseManager.cs
@@ -231,6 +231,36 @@ namespace Tango.AzureUtils.Database
             }
         }
 
+        public async Task DowngradeMachineStudioVersion(IWebAppBase app)
+        {
+            var latestMachineStudioVersion = await GetLatestMachineStudioVersion(app);
+            var dataSource = (await app.GetMachineServiceSettingsAsync()).ToDataSource();
+
+            OnProgress(AzureUtilsStage.Database, $"Removing machine studio database entry for version '{latestMachineStudioVersion.Version}'...");
+
+            using (var db = ObservablesContext.CreateDefault(dataSource))
+            {
+                var latest = await db.MachineStudioVersions.SingleOrDefaultAsync(x => x.Guid == latestMachineStudioVersion.Guid);
+                db.MachineStudioVersions.Remove(latest);
+                await db.SaveChangesAsync();
+            }
+        }
+
+        public async Task DowngradePPCVersion(IWebAppBase app)
+        {
+            var latestPPCVersion = await GetLatestPPCVersion(app);
+            var dataSource = (await app.GetMachineServiceSettingsAsync()).ToDataSource();
+
+            OnProgress(AzureUtilsStage.Database, $"Removing PPC database entry for version '{latestPPCVersion.Version}'...");
+
+            using (var db = ObservablesContext.CreateDefault(dataSource))
+            {
+                var latest = await db.TangoVersions.SingleOrDefaultAsync(x => x.Guid == latestPPCVersion.Guid);
+                db.TangoVersions.Remove(latest);
+                await db.SaveChangesAsync();
+            }
+        }
+
         public async Task<MachineStudioVersion> GetLatestMachineStudioVersion(IWebAppBase app)
         {
             OnProgress(AzureUtilsStage.Database, $"Getting latest machine studio version on '{app.Name}'...");