Update app.py

app.py

@@ -291,6 +291,8 @@ def highlight_issues_in_pdf(file, language_matches: List[Dict[str, Any]]) -> byt
 # Main Analysis Function
 # ------------------------------
 
+# server/gradio_client.py
+
 def analyze_pdf(filepath: str) -> Tuple[Dict[str, Any], bytes]:
     """Analyzes the PDF for language issues and returns results and annotated PDF."""
     try:
@@ -299,12 +301,21 @@ def analyze_pdf(filepath: str) -> Tuple[Dict[str, Any], bytes]:
             return {"error": "Failed to extract text from PDF."}, None
 
         language_issues = check_language_issues(full_text)
+
+        # Handle potential errors from check_language_issues
+        if "error" in language_issues:
+            return {"error": language_issues["error"]}, None
+
+        issues = language_issues.get("issues", [])
         
-        if language_issues:
-            issues = language_issues.get("issues", [])
-            language_issues, annotated_pdf = highlight_issues_in_pdf(filepath, issues) if issues else None
-            return language_issues, annotated_pdf
+        if issues:
+            language_issues, annotated_pdf = highlight_issues_in_pdf(filepath, issues)
+            return {"issues": language_issues}, annotated_pdf
+        else:
+            # Return a meaningful message and no annotated PDF if no issues are found
+            return {"message": "No language issues found in the uploaded PDF."}, None
     except Exception as e:
+        # Return the error message and no annotated PDF
         return {"error": str(e)}, None
 
 # ------------------------------