Update app.py

app.py

@@ -32,6 +32,55 @@ def suggest_test_cases(topic: str) -> list:
     """
     return generate_test_cases(topic)
 
+@tool
+def time_difference(ts1: str, tz1: str, ts2: str, tz2: str, signed: bool = False) -> str:
+    """
+    Calculate the duration between two timestamps in different timezones.
+
+    Args:
+        ts1: First timestamp string in 'YYYY-MM-DD HH:MM:SS' format.
+        tz1: Timezone of ts1 (e.g. 'UTC', 'America/New_York').
+        ts2: Second timestamp string in 'YYYY-MM-DD HH:MM:SS' format.
+        tz2: Timezone of ts2.
+        signed: If True, return negative values when ts2 is earlier than ts1.
+                If False, return absolute difference.
+
+    Returns:
+        A formatted string showing the difference in days, hours, minutes, and seconds.
+    """
+    try:
+        # Parse timestamps
+        fmt = "%Y-%m-%d %H:%M:%S"
+        dt1_naive = datetime.datetime.strptime(ts1, fmt)
+        dt2_naive = datetime.datetime.strptime(ts2, fmt)
+
+        # Apply timezones
+        dt1 = pytz.timezone(tz1).localize(dt1_naive)
+        dt2 = pytz.timezone(tz2).localize(dt2_naive)
+
+        # Convert to UTC for accurate comparison
+        dt1_utc = dt1.astimezone(pytz.UTC)
+        dt2_utc = dt2.astimezone(pytz.UTC)
+
+        # Difference
+        diff = dt2_utc - dt1_utc
+
+        if not signed:
+            diff = abs(diff)
+
+        # Break down difference
+        total_seconds = int(diff.total_seconds())
+        days = total_seconds // 86400
+        hours = (total_seconds % 86400) // 3600
+        minutes = (total_seconds % 3600) // 60
+        seconds = total_seconds % 60
+
+        result = f"Difference: {days}d {hours}h {minutes}m {seconds}s (total {total_seconds} seconds)"
+        return result
+
+    except Exception as e:
+        return f"Error calculating time difference: {str(e)}"
+        
 @tool
 def get_current_time_in_timezone(timezone: str) -> str:
     """A tool that fetches the current local time in a specified timezone.
@@ -69,7 +118,7 @@ with open("prompts.yaml", 'r') as stream:
     
 agent = CodeAgent(
     model=model,
-    tools=[final_answer, suggest_test_cases], ## add your tools here (don't remove final answer)
+    tools=[final_answer, suggest_test_cases, time_difference], ## add your tools here (don't remove final answer)
     max_steps=6,
     verbosity_level=1,
     grammar=None,