Update utils.py

utils.py

@@ -4,6 +4,7 @@ import os
 import whisper
 import json
 import streamlit as st
+from datetime import datetime
 
 def record_audio(duration=5, fs=44100):
     try:
@@ -34,10 +35,34 @@ def save_uploaded_audio(uploaded_file, filename):
         f.write(uploaded_file.read())
     return path
 
-def save_chat_history(history, filename="chat_history.json"):
+def save_chat_history(history, filename=None):
     """
     Save conversation history to a JSON file.
     """
     os.makedirs("history", exist_ok=True)
+    if filename is None:
+        timestamp = datetime.now().strftime("%Y-%m-%d_%H-%M-%S")
+        filename = f"chat_history_{timestamp}.json"
     with open(os.path.join("history", filename), "w") as f:
-        json.dump(history, f, indent=4)
+        json.dump(history, f, indent=4)
+    return filename
+
+def load_chat_history(filename):
+    """
+    Load conversation history from a JSON file.
+    """
+    filepath = os.path.join("history", filename)
+    if os.path.exists(filepath):
+        with open(filepath, "r") as f:
+            return json.load(f)
+    else:
+        st.warning("No chat history found with that filename.")
+        return []
+
+def list_chat_histories():
+    """
+    List all saved chat history filenames.
+    """
+    history_dir = "history"
+    os.makedirs(history_dir, exist_ok=True)
+    return sorted([f for f in os.listdir(history_dir) if f.endswith(".json")])