Update app.py

app.py

@@ -21,19 +21,45 @@ def process_with_markitdown(input_path):
     except Exception as e:
         return f"Error processing input: {str(e)}"
 
+import tempfile
+import os
+import io
+
 def save_uploaded_file(file):
-    """Save uploaded file to temporary location and return path"""
+    """Save uploaded file to temporary location and return path.  
+    Handles only file uploads, not URLs."""
+
     if file is None:
         return None
-    
+
     try:
         temp_dir = tempfile.gettempdir()
-        temp_path = os.path.join(temp_dir, file.name)
-        
-        with open(temp_path, 'wb') as f:
-            f.write(file.read())
+        temp_filename = tempfile.mkstemp(dir=temp_dir, suffix=os.path.splitext(file.name)[1])[1]
+
+        # Crucial: Check for valid file-like object
+        if hasattr(file, 'read'):  
+          with open(temp_filename, 'wb') as f:
+            try:
+              while True:
+                chunk = file.read(8192)
+                if not chunk:
+                  break
+                f.write(chunk)
+            except Exception as e:
+                return f"Error during file write: {str(e)}"
+
+        elif hasattr(file, 'getvalue'):  # In-memory file-like
+          with open(temp_filename, 'wb') as f:
+            try:
+              f.write(file.getvalue())
+            except Exception as e:
+              return f"Error during file write: {str(e)}"
         
-        return temp_path
+        else:
+           return "Error: Unsupported file type."
+
+        return temp_filename
+    
     except Exception as e:
         return f"Error saving file: {str(e)}"