app.py

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

# Tool to calculate hours difference
@tool
def get_hours_difference(time_1: str, time_2: str) -> str:
    """A tool that calculates the number of hours difference between two times.
    Args:
        time_1: The first time in format yyyy-mm-dd hh:mm:ss.
        time_2: The second time in format yyyy-mm-dd hh:mm:ss.
    """
    try:
        expected_time_format = "%Y-%m-%d %H:%M:%S"
        time_1_object = datetime.datetime.strptime(time_1, expected_time_format)
        time_2_object = datetime.datetime.strptime(time_2, expected_time_format)
        if time_1_object > time_2_object:
            return f"There is a difference of {(time_1_object - time_2_object).seconds / 3600} hours between the two."
        return f"There is a difference of {(time_2_object - time_1_object).seconds / 3600} hours between the two."
    except Exception as e:
        return "Error working out the number of hour difference between the two times."

# Tool to get current time in a timezone
@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:
        tz = pytz.timezone(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)}"

# Fixed DuckDuckGo search tool
@tool
def duck_search(query: str) -> str:
    """A tool that searches DuckDuckGo for a given query.
    Args:
        query: The term to search for (e.g., 'latest news New York').
    """
    try:
        search_tool = DuckDuckGoSearchTool()
        results = search_tool(query)  # Call it directly
        # Handle string or list/dict output
        if isinstance(results, str):
            return f"Found for '{query}': {results.strip()}"
        elif isinstance(results, list) and len(results) > 0:
            return f"Found for '{query}': {results[0].get('snippet', 'No snippet')}"
        return f"No results for '{query}'."
    except Exception as e:
        return f"Error searching '{query}': {str(e)}"

# Instantiate tools
final_answer = FinalAnswerTool()

# Model setup
model = HfApiModel(
    max_tokens=2096,
    temperature=0.5,
    model_id='Qwen/Qwen2.5-Coder-32B-Instruct',
    custom_role_conversions=None,
)

# Load image generation tool
image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)

# Load prompt templates
with open("prompts.yaml", 'r') as stream:
    prompt_templates = yaml.safe_load(stream)

# Create the agent
agent = CodeAgent(
    model=model,
    tools=[
        final_answer,
        get_current_time_in_timezone,
        get_hours_difference,
        duck_search,
        image_generation_tool
    ],
    max_steps=6,
    verbosity_level=1,
    prompt_templates=prompt_templates
)

# Launch Gradio UI
GradioUI(agent).launch()