Update tools.py

tools.py

@@ -0,0 +1,35 @@
+from langchain.tools import Tool
+import datetime
+
+def current_date(_):
+    return datetime.datetime.now().strftime("%Y-%m-%d")
+
+def day_of_week(_):
+    return datetime.datetime.now().strftime("%A")
+
+def days_until(date_str):
+    try:
+        future_date = datetime.datetime.strptime(date_str, "%Y-%m-%d")
+        today = datetime.datetime.now()
+        delta = future_date - today
+        return f"{delta.days} days until {date_str}"
+    except Exception as e:
+        return f"Error parsing date: {str(e)}"
+
+datetime_tools = [
+    Tool(
+        name="current_date",
+        func=current_date,
+        description="Returns the current date in YYYY-MM-DD format."
+    ),
+    Tool(
+        name="current_day_of_week",
+        func=day_of_week,
+        description="Returns the current day of the week (e.g., Monday, Tuesday)."
+    ),
+    Tool(
+        name="days_until",
+        func=days_until,
+        description="Returns the number of days from today until a given date (input format: YYYY-MM-DD)."
+    )
+]