Update app.py

app.py

@@ -1,6 +1,7 @@
 import gradio as gr
 import tempfile
 import os
+import base64
 from openai import OpenAI
 
 def generate_systematic_review(api_key, pdf_files):
@@ -33,13 +34,19 @@ def generate_systematic_review(api_key, pdf_files):
             
             # Read the file as binary data
             with open(pdf_file.name, "rb") as f:
-                file_data = f.read()
+                binary_data = f.read()
+            
+            # Encode the binary data to base64
+            base64_encoded = base64.b64encode(binary_data).decode('utf-8')
+            
+            # Create proper data URL with MIME type
+            data_url = f"data:application/pdf;base64,{base64_encoded}"
             
             # Add to file inputs
             file_inputs.append({
                 "type": "input_file",
                 "filename": file_name,
-                "file_data": f"data:application/pdf;base64,{file_data[:10]}"  # Truncated for demo
+                "file_data": data_url
             })
         
         # System prompt defining systematic review steps
@@ -100,11 +107,6 @@ By following these steps, you can ensure that your systematic review paper is we
                     ]
                 }
             ],
-            text={
-                "format": {
-                    "type": "text"
-                }
-            },
             temperature=0.7,
             max_output_tokens=4000,
             top_p=1
@@ -112,9 +114,13 @@ By following these steps, you can ensure that your systematic review paper is we
         
         # Extract and return the review text from the response
         if hasattr(response, 'content') and len(response.content) > 0:
+            result_text = ""
             for item in response.content:
                 if hasattr(item, 'text'):
-                    return item.text
+                    result_text += item.text
+            
+            if result_text:
+                return result_text
         
         return "Failed to generate a systematic review. Please try again."
         
@@ -166,6 +172,8 @@ with gr.Blocks(title="Systematic Review Generator") as app:
     
     This application requires a valid OpenAI API key with access to the GPT-4.1 model. 
     Your API key is not stored and is only used to make the API call to OpenAI.
+    
+    Please note that large PDF files may cause issues with the API due to size limits.
     """)
 
 if __name__ == "__main__":