Update app.py

feature: Add countdown tool to calculate time remaining until an event

app.py

@@ -4,19 +4,38 @@ import requests
 import pytz
 import yaml
 from tools.final_answer import FinalAnswerTool
+import datetime
 
 from Gradio_UI import GradioUI
 
-# Below is an example of a tool that does nothing. Amaze us with your creativity !
+
 @tool
-def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return type
-    #Keep this format for the description / args / args description but feel free to modify the tool
-    """A tool that does nothing yet 
+def countdown_tool(event_date: str, duration: int) -> str:
+    """A tool that calculates the remaining time until a specified event.
+    
     Args:
-        arg1: the first argument
-        arg2: the second argument
+        event_date (str): The event date in the format "YYYY-MM-DD HH:MM".
+        duration (int): An unused parameter, kept for structure.
+    
+    Returns:
+        str: A message indicating the time remaining until the event.
     """
-    return "What magic will you build ?"
+    try:
+        event_datetime = datetime.datetime.strptime(event_date, "%Y-%m-%d %H:%M")
+        now = datetime.datetime.now()
+        diff = event_datetime - now
+
+        if diff.total_seconds() < 0:
+            return f"The specified date ({event_date}) has already passed!"
+
+        days = diff.days
+        hours, remainder = divmod(diff.seconds, 3600)
+        minutes, _ = divmod(remainder, 60)
+
+        return f"Time remaining until the event: {days} days, {hours} hours, {minutes} minutes."
+    except Exception as e:
+        return f"Error: Invalid date format ({event_date}). Expected format: YYYY-MM-DD HH:MM"
+
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str: