fixed the bug of Sodistore Home Product not show on side bar and added related backend logs and more accurate frontend error messages

csharp/App/Backend/Controller.cs

@@ -596,6 +596,13 @@ public class Controller : ControllerBase
         var folder = Db.GetFolderById(folderAccess.FolderId);
         var user   = Db.GetUserById(folderAccess.UserId);
 
+        // Check if user already has access - treat as idempotent (success)
+        if (user is not null && folder is not null && user.HasAccessTo(folder))
+        {
+            Console.WriteLine($"GrantUserAccessToFolder: User {user.Id} ({user.Name}) already has access to folder {folder.Id} ({folder.Name}) - returning success");
+            return Ok();
+        }
+
         return session.GrantUserAccessTo(user, folder)
             ? Ok()
             : Unauthorized();
@@ -626,6 +633,13 @@ public class Controller : ControllerBase
         var installation = Db.GetInstallationById(installationAccess.InstallationId);
         var user         = Db.GetUserById(installationAccess.UserId);
 
+        // Check if user already has access - treat as idempotent (success)
+        if (user is not null && installation is not null && user.HasAccessTo(installation))
+        {
+            Console.WriteLine($"GrantUserAccessToInstallation: User {user.Id} ({user.Name}) already has access to installation {installation.Id} ({installation.Name}) - returning success");
+            return Ok();
+        }
+
         return session.GrantUserAccessTo(user, installation)
              ? Ok()
              : Unauthorized();

csharp/App/Backend/DataTypes/Methods/Session.cs

@@ -405,13 +405,53 @@ public static class SessionMethods
     {
         var sessionUser = session?.User;
 
-        return sessionUser is not null
+        if (sessionUser is null)
-            && folder is not null
+        {
-            && user is not null
+            Console.WriteLine($"GrantUserAccessToFolder failed: sessionUser is null");
-            && user.IsDescendantOf(sessionUser)
+            return false;
-            && sessionUser.HasAccessTo(folder)
+        }
-            && !user.HasAccessTo(folder)
+
-            && Db.Create(new FolderAccess { UserId = user.Id, FolderId = folder.Id });
+        if (folder is null)
+        {
+            Console.WriteLine($"GrantUserAccessToFolder failed: folder is null");
+            return false;
+        }
+
+        if (user is null)
+        {
+            Console.WriteLine($"GrantUserAccessToFolder failed: user is null");
+            return false;
+        }
+
+        if (!user.IsDescendantOf(sessionUser))
+        {
+            Console.WriteLine($"GrantUserAccessToFolder failed: User {user.Id} ({user.Name}) is not a descendant of sessionUser {sessionUser.Id} ({sessionUser.Name})");
+            return false;
+        }
+
+        if (!sessionUser.HasAccessTo(folder))
+        {
+            Console.WriteLine($"GrantUserAccessToFolder failed: SessionUser {sessionUser.Id} ({sessionUser.Name}) does not have access to folder {folder.Id} ({folder.Name})");
+            return false;
+        }
+
+        if (user.HasAccessTo(folder))
+        {
+            Console.WriteLine($"GrantUserAccessToFolder failed: User {user.Id} ({user.Name}) already has access to folder {folder.Id} ({folder.Name})");
+            return false;
+        }
+
+        var created = Db.Create(new FolderAccess { UserId = user.Id, FolderId = folder.Id });
+        if (!created)
+        {
+            Console.WriteLine($"GrantUserAccessToFolder failed: Failed to create FolderAccess record for User {user.Id} and Folder {folder.Id}");
+        }
+        else
+        {
+            Console.WriteLine($"GrantUserAccessToFolder succeeded: Granted User {user.Id} ({user.Name}) access to Folder {folder.Id} ({folder.Name})");
+        }
+
+        return created;
     }
     
     public static Boolean RevokeUserAccessTo(this Session? session, User? user, Installation? installation)

typescript/frontend-marios2/src/App.tsx

@@ -76,7 +76,7 @@ function App() {
           setUser(response.data.user);
           setAccessToSalimax(response.data.accessToSalimax);
           setAccessToSalidomo(response.data.accessToSalidomo);
-          setAccessToSodiohome(response.data.accessToSodiohome);
+          setAccessToSodiohome(response.data.accessToSodioHome);
           setAccessToSodistore(response.data.accessToSodistoreMax);
           if (response.data.accessToSalimax) {
             navigate(routes.installations);

typescript/frontend-marios2/src/content/dashboards/ManageAccess/UserAccess.tsx

@@ -172,7 +172,13 @@ function UserAccess(props: UserAccessProps) {
           }
         })
         .catch((err) => {
-          setErrorMessage('An error has occured');
+          if (err.response && err.response.status === 401) {
+            setErrorMessage(
+              `User ${props.current_user.name} already has access to folder "${folder.name}" or you don't have permission to grant this access`
+            );
+          } else {
+            setErrorMessage('An error has occured');
+          }
           setError(true);
         });
     }
@@ -195,7 +201,13 @@ function UserAccess(props: UserAccessProps) {
           }
         })
         .catch((err) => {
-          setErrorMessage('An error has occured');
+          if (err.response && err.response.status === 401) {
+            setErrorMessage(
+              `User ${props.current_user.name} already has access to installation "${installation.name}" or you don't have permission to grant this access`
+            );
+          } else {
+            setErrorMessage('An error has occured');
+          }
           setError(true);
         });
     }