Update app.py

app.py

@@ -16,7 +16,26 @@ def get_pdf_content():
         # Convert Google Drive link to direct download link
         file_id = COURSE_PDF_URL.split('/')[5]
         direct_url = f"https://drive.google.com/uc?export=download&id={file_id}"
-        return httpx.get(direct_url).content
+        response = httpx.get(direct_url)
+        
+        # Add verification
+        if response.status_code == 200:
+            content = response.content
+            content_type = response.headers.get('content-type', '')
+            
+            print(f"PDF Download Status: Success")
+            print(f"Content Type: {content_type}")
+            print(f"Content Size: {len(content)} bytes")
+            
+            if 'pdf' in content_type.lower() or content[:4] == b'%PDF':
+                return content
+            else:
+                print("Warning: Downloaded content might not be a PDF")
+                return None
+        else:
+            print(f"Failed to download PDF. Status code: {response.status_code}")
+            return None
+            
     except Exception as e:
         print(f"Error loading PDF: {e}")
         return None