modified: app.py

app.py

@@ -107,26 +107,28 @@ def make_discord_session(token=None, state=None):
 
 def fetch_and_cache_profile_picture(user_id, avatar_url):
     """Lädt das Profilbild herunter, speichert es lokal und in Redis, wenn es nicht vorhanden ist."""
-    if not user_id:
-        print(f"Invalid user_id: {user_id}. Using default profile picture.")
+    # Überprüfen auf gültige user_id
+    if not user_id or user_id == "":
+        print(f"Invalid or empty user_id: {user_id}. Using default profile picture.")
         return "/static/default_profile.png"
     
-    # Pfad zum lokalen Bild
-    local_image_path = os.path.join(PROFILE_IMAGE_DIR, f"{user_id}.png")
+    # Konvertiere user_id sicher zu einem String
+    user_id_str = str(user_id)
+    local_image_path = os.path.join(PROFILE_IMAGE_DIR, f"{user_id_str}.png")
     
     # Prüfe, ob das Bild lokal vorhanden ist
     if os.path.exists(local_image_path):
-        print(f"Local image already exists for user {user_id}: {local_image_path}")
-        r.set(str(user_id), local_image_path)  # Speichere in Redis für zukünftige Anfragen
+        print(f"Local image found for user {user_id}: {local_image_path}")
+        r.set(user_id_str, local_image_path)  # Speichere den Pfad in Redis für zukünftige Anfragen
         return local_image_path
 
     # Prüfe Redis für den Pfad
-    cached_image = r.get(str(user_id))
+    cached_image = r.get(user_id_str)
     if cached_image:
         print(f"Redis cache hit for user {user_id}: {cached_image.decode('utf-8')}")
         return cached_image.decode('utf-8')
 
-    # Falls das Bild nicht lokal vorhanden ist und Redis keinen Pfad hat, versuche das Bild herunterzuladen
+    # Wenn das Bild weder lokal noch in Redis vorhanden ist, versuche, es herunterzuladen
     if avatar_url:
         try:
             print(f"Downloading profile picture for user {user_id} from {avatar_url}")
@@ -138,7 +140,7 @@ def fetch_and_cache_profile_picture(user_id, avatar_url):
                 img_file.write(response.content)
             
             # Speichere den Pfad in Redis
-            r.set(str(user_id), local_image_path)
+            r.set(user_id_str, local_image_path)
             print(f"Profile picture for user {user_id} downloaded and cached at {local_image_path}")
             return local_image_path
         except requests.RequestException as e: