app.py

from smolagents import CodeAgent,DuckDuckGoSearchTool, HfApiModel,load_tool,tool
import datetime
import requests
import pytz
import yaml
from tools.final_answer import FinalAnswerTool

from Gradio_UI import GradioUI

from typing import List, Dict

def generate_test_cases(topic: str) -> List[Dict[str, str]]:
    """
    Suggest simple QA test cases for a given topic.

    Args:
        topic: The feature, function, or topic to generate test cases for.

    Returns:
        A list of test cases, each with input and expected output.
    """
    topic_lower = topic.lower()
    test_cases = []

    if "login" in topic_lower:
        test_cases = [
            {"test_case": "Valid login", "input": "Correct username/password", "expected_output": "User is logged in successfully"},
            {"test_case": "Invalid password", "input": "Wrong password", "expected_output": "Error message displayed"},
            {"test_case": "Empty username", "input": "Username left blank", "expected_output": "Error message displayed"},
            {"test_case": "Empty password", "input": "Password left blank", "expected_output": "Error message displayed"},
        ]
    elif "calculator" in topic_lower:
        test_cases = [
            {"test_case": "Addition", "input": "2 + 3", "expected_output": "5"},
            {"test_case": "Subtraction", "input": "5 - 2", "expected_output": "3"},
            {"test_case": "Multiplication", "input": "4 * 5", "expected_output": "20"},
            {"test_case": "Divide by zero", "input": "5 / 0", "expected_output": "Error handled gracefully"},
        ]
    else:
        # Generic template
        test_cases = [
            {"test_case": f"Test case 1 for {topic}", "input": "Sample input", "expected_output": "Expected behavior"},
            {"test_case": f"Test case 2 for {topic}", "input": "Another input", "expected_output": "Expected behavior"},
            {"test_case": f"Test case 3 for {topic}", "input": "Additional input", "expected_output": "Expected behavior"},
        ]

    return test_cases
    
# 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 
    Args:
        arg1: the first argument
        arg2: the second argument
    """
    return "What magic will you build ?"

@tool
def suggest_test_cases(topic: str) -> list:
    """
    Suggest simple QA test cases for a given topic.
    
    Args:
        topic: Feature or topic to generate test cases for.
        
    Returns:
        A list of test cases with input and expected output.
    """
    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.
    Args:
        timezone: A string representing a valid timezone (e.g., 'America/New_York').
    """
    try:
        # Create timezone object
        tz = pytz.timezone(timezone)
        # Get current time in that timezone
        local_time = datetime.datetime.now(tz).strftime("%Y-%m-%d %H:%M:%S")
        return f"The current local time in {timezone} is: {local_time}"
    except Exception as e:
        return f"Error fetching time for timezone '{timezone}': {str(e)}"


final_answer = FinalAnswerTool()

# 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' 

model = HfApiModel(
max_tokens=2096,
temperature=0.5,
model_id='Qwen/Qwen2.5-Coder-32B-Instruct',# it is possible that this model may be overloaded
custom_role_conversions=None,
)


# Import tool from Hub
image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)

with open("prompts.yaml", 'r') as stream:
    prompt_templates = yaml.safe_load(stream)
    
agent = CodeAgent(
    model=model,
    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,
    planning_interval=None,
    name=None,
    description=None,
    prompt_templates=prompt_templates
)


GradioUI(agent).launch()