Clean and refactor user names

app.py

@@ -186,7 +186,7 @@ with demo:
         outputs=[encrypted_output_representation],
     )
 
-    # Button to decrypt the output as the user
+    # Button to decrypt the output
     decrypt_button.click(
         decrypt_output,
         inputs=[client_id],

backend.py

@@ -66,22 +66,18 @@ def clean_temporary_files(n_keys=20):
     key_dirs = sorted(FHE_KEYS.iterdir(), key=os.path.getmtime)
 
     # If more than n_keys keys are found, remove the oldest
-    user_ids = []
+    client_ids = []
     if len(key_dirs) > n_keys:
         n_keys_to_delete = len(key_dirs) - n_keys
         for key_dir in key_dirs[:n_keys_to_delete]:
-            user_ids.append(key_dir.name)
+            client_ids.append(key_dir.name)
             shutil.rmtree(key_dir)
-
-    # Get all the encrypted files in the temporary folders
-    client_files = CLIENT_FILES.iterdir()
-    server_files = SERVER_FILES.iterdir()
-
+    
     # Delete all files related to the IDs whose keys were deleted
-    for user_dir in chain(client_files, server_files):
-        for user_id in user_ids:
-            if user_id in user_dir.name:
-                shutil.rmtree(user_dir)
+    for directory in chain(CLIENT_FILES.iterdir(), SERVER_FILES.iterdir()):
+        for client_id in client_ids:
+            if client_id in directory.name:
+                shutil.rmtree(directory)
 
 
 def _get_client(client_id):
@@ -285,7 +281,7 @@ def pre_process_encrypt_send_user(client_id, *inputs):
 
 
 def pre_process_encrypt_send_bank(client_id, *inputs):
-    """Pre-process, encrypt and send the user inputs for a specific client to the server.
+    """Pre-process, encrypt and send the bank inputs for a specific client to the server.
 
     Args:        
         client_id (str): The current client ID to consider.
@@ -301,7 +297,7 @@ def pre_process_encrypt_send_bank(client_id, *inputs):
     
 
 def pre_process_encrypt_send_third_party(client_id, *inputs):
-    """Pre-process, encrypt and send the user inputs for a specific client to the server.
+    """Pre-process, encrypt and send the third party inputs for a specific client to the server.
 
     Args:
         client_id (str): The current client ID to consider.