Update app.py

app.py

@@ -46,24 +46,29 @@ logger = logging.getLogger(__name__)
 # ══════════════════════════════════════════════════════════════════════════════
 
 def get_client():
-    """Spaces-optimized client initialization."""
+    """Spaces-optimized client initialization with debug logging."""
     if not HF_AVAILABLE:
         logger.error("❌ HuggingFace Hub not available")
         return None
     
-    # Try multiple token sources for Spaces
-    api_token = None
+    # Debug: Check all environment variables for tokens
+    logger.info("🔍 Debugging token detection...")
     
     # Method 1: Check HF_API_TOKEN (your current setup)
     api_token = os.getenv("HF_API_TOKEN")
     if api_token:
-        logger.info("✅ Found HF_API_TOKEN")
+        logger.info(f"✅ Found HF_API_TOKEN (length: {len(api_token)})")
+        logger.info(f"✅ Token starts with: {api_token[:10]}..." if len(api_token) > 10 else "✅ Token found but very short")
+    else:
+        logger.warning("❌ HF_API_TOKEN not found in environment")
     
     # Method 2: Fallback to HF_TOKEN 
     if not api_token:
         api_token = os.getenv("HF_TOKEN")
         if api_token:
-            logger.info("✅ Found HF_TOKEN")
+            logger.info(f"✅ Found HF_TOKEN (length: {len(api_token)})")
+        else:
+            logger.warning("❌ HF_TOKEN not found in environment")
     
     # Method 3: Hugging Face CLI token (if logged in)
     if not api_token:
@@ -71,12 +76,21 @@ def get_client():
             from huggingface_hub import get_token
             api_token = get_token()
             if api_token:
-                logger.info("✅ Found CLI token")
-        except:
-            pass
+                logger.info(f"✅ Found CLI token (length: {len(api_token)})")
+        except Exception as e:
+            logger.warning(f"❌ CLI token check failed: {e}")
+    
+    # Debug: Show all environment variables that start with HF_
+    hf_env_vars = {k: v[:10] + "..." if v else None for k, v in os.environ.items() if k.startswith('HF_')}
+    logger.info(f"🔍 All HF_ environment variables: {hf_env_vars}")
     
     if not api_token:
-        logger.warning("⚠️ No HF token found. Please set HF_API_TOKEN or HF_TOKEN in Spaces secrets.")
+        logger.error("❌ No HF token found in any location")
+        return None
+    
+    # Validate token format
+    if not api_token.startswith('hf_'):
+        logger.warning(f"⚠️ Token doesn't start with 'hf_': {api_token[:10]}...")
         return None
     
     try:
@@ -86,12 +100,13 @@ def get_client():
         # Quick test with a lightweight model
         logger.info("🧪 Testing client connectivity...")
         test_result = client.fill_mask("Paris is the [MASK] of France.", model="distilbert-base-uncased")
-        logger.info(f"✅ Client test successful")
+        logger.info(f"✅ Client test successful - got {len(test_result)} results")
         
         return client
         
     except Exception as e:
         logger.error(f"❌ Client initialization failed: {e}")
+        logger.error(f"❌ Token used: {api_token[:15]}..." if api_token else "No token")
         return None
 
 # Initialize client globally for Spaces
@@ -646,4 +661,5 @@ if __name__ == "__main__":
         server_port=7860,
         show_error=True,
         quiet=False
-    )
+    )
+