add tools

- create time_difference tool
- add tools to agent

app.py

@@ -18,6 +18,30 @@ def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return
     """
     return "What magic will you build ?"
 
+@tool
+def time_difference(time1: str, time2: str) -> str:
+    """A tool that calculates the time difference between two timestamps.
+    
+    Args:
+        time1: The first timestamp (format: YYYY-MM-DD HH:MM:SS)
+        time2: The second timestamp (format: YYYY-MM-DD HH:MM:SS)
+    
+    Returns:
+        A string describing the time difference.
+    """
+    try:
+        fmt = "%Y-%m-%d %H:%M:%S"
+        dt1 = datetime.datetime.strptime(time1, fmt)
+        dt2 = datetime.datetime.strptime(time2, fmt)
+        
+        delta = abs(dt1 - dt2)
+        hours, remainder = divmod(delta.seconds, 3600)
+        minutes = remainder // 60
+        
+        return f"The time difference is {delta.days} days, {hours} hours, and {minutes} minutes."
+    except ValueError:
+        return "Invalid date format. Please use 'YYYY-MM-DD HH:MM:SS'."
+
 @tool
 def get_current_time_in_timezone(timezone: str) -> str:
     """A tool that fetches the current local time in a specified timezone.
@@ -35,6 +59,7 @@ def get_current_time_in_timezone(timezone: str) -> str:
 
 
 final_answer = FinalAnswerTool()
+duck_duck_go_search = DuckDuckGoSearchTool()
 
 # If the agent does not answer, the model is overloaded, please use another model or the following Hugging Face Endpoint that also contains qwen2.5 coder:
 # model_id='https://pflgm2locj2t89co.us-east-1.aws.endpoints.huggingface.cloud' 
@@ -55,7 +80,7 @@ with open("prompts.yaml", 'r') as stream:
     
 agent = CodeAgent(
     model=model,
-    tools=[final_answer], ## add your tools here (don't remove final answer)
+    tools=[final_answer, duck_duck_go_search, get_current_time_in_timezone(), time_difference()], ## add your tools here (don't remove final answer)
     max_steps=6,
     verbosity_level=1,
     grammar=None,