Update app.py

app.py

@@ -3,28 +3,31 @@ import requests
 import json
 from decouple import Config
 
-def query_vectara(question, chat_history, uploaded_file):
-    # Handle file upload to Vectara
-    customer_id = config('CUSTOMER_ID')  # Read from .env file
-    corpus_id = config('CORPUS_ID')  # Read from .env file
-    api_key = config('API_KEY')  # Read from .env file
-    url = f"https://api.vectara.io/v1/upload?c={customer_id}&o={corpus_id}"
+def query_vectara(question, chat_history, uploaded_file=None):
+    # Handle file upload to Vectara if a file is provided
+    if uploaded_file is not None:
+        customer_id = config('CUSTOMER_ID')  # Read from .env file
+        corpus_id = config('CORPUS_ID')  # Read from .env file
+        api_key = config('API_KEY')  # Read from .env file
+        url = f"https://api.vectara.io/v1/upload?c={customer_id}&o={corpus_id}"
 
-    post_headers = {
-        "x-api-key": api_key,
-        "customer-id": customer_id
-    }
+        post_headers = {
+            "x-api-key": api_key,
+            "customer-id": customer_id
+        }
 
-    files = {
-        "file": (uploaded_file.name, uploaded_file),
-        "doc_metadata": (None, json.dumps({"metadata_key": "metadata_value"})),  # Replace with your metadata
-    }
-    response = requests.post(url, files=files, headers=post_headers)
+        files = {
+            "file": (uploaded_file.name, uploaded_file),
+            "doc_metadata": (None, json.dumps({"metadata_key": "metadata_value"})),  # Replace with your metadata
+        }
+        response = requests.post(url, files=files, headers=post_headers)
 
-    if response.status_code == 200:
-        upload_status = "File uploaded successfully"
+        if response.status_code == 200:
+            upload_status = "File uploaded successfully"
+        else:
+            upload_status = "Failed to upload the file"
     else:
-        upload_status = "Failed to upload the file"
+        upload_status = "No file uploaded"
 
     # Get the user's message from the chat history
     user_message = chat_history[-1][0]
@@ -91,15 +94,14 @@ def query_vectara(question, chat_history, uploaded_file):
         response_message = f"{upload_status}\n\nError: {query_response.status_code}"
 
     return response_message
-    
-# Create a Gradio ChatInterface with a text input, a file upload input, and a text output
+
+# Create a Gradio ChatInterface with a text input and an optional file upload input
 iface = gr.Interface(
     fn=query_vectara,
-    inputs=[gr.Textbox(label="Input Text"), gr.File(label="Upload a file")],
+    inputs=[gr.Textbox(label="Input Text"), gr.File(label="Upload a file", required=False)],
     outputs=gr.Textbox(label="Output Text"),
     title="Vectara Chatbot",
     description="Ask me anything using the Vectara API!"
 )
 
 iface.launch()
-