Make AgeBot ChatInterface compatible with Gradio 5 history format

app.py

@@ -3,13 +3,30 @@ from huggingface_hub import InferenceClient
 
 client = InferenceClient("HuggingFaceH4/zephyr-7b-beta")
 
-def respond(message, history, system_message, max_tokens, temperature, top_p):
-    messages = [{"role": "system", "content": system_message}]
+
+def _history_to_messages(history):
+    messages = []
+    if not history:
+        return messages
+    # Gradio 5 uses list[dict]; older ChatInterface used list[tuple]
+    if isinstance(history[0], dict):
+        for item in history:
+            role = item.get("role")
+            content = item.get("content")
+            if role in {"user", "assistant"} and content:
+                messages.append({"role": role, "content": content})
+        return messages
     for user_msg, assistant_msg in history:
         if user_msg:
             messages.append({"role": "user", "content": user_msg})
         if assistant_msg:
             messages.append({"role": "assistant", "content": assistant_msg})
+    return messages
+
+
+def respond(message, history, system_message, max_tokens, temperature, top_p):
+    messages = [{"role": "system", "content": system_message}]
+    messages.extend(_history_to_messages(history))
     messages.append({"role": "user", "content": message})
 
     response = ""
@@ -28,6 +45,7 @@ def respond(message, history, system_message, max_tokens, temperature, top_p):
     except Exception as exc:
         yield f"Model call failed: {exc}. Add HF_TOKEN in Space secrets if needed."
 
+
 demo = gr.ChatInterface(
     respond,
     additional_inputs=[