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

# --- CUSTOM TOOLS ---

@tool
def convert_currency(amount: float, from_currency: str, to_currency: str) -> str:
    """A tool that converts an amount from one currency to another using real-time exchange rates.
    Args:
        amount: The numerical amount to convert.
        from_currency: The source currency code (e.g., 'USD', 'INR', 'EUR').
        to_currency: The target currency code (e.g., 'INR', 'GBP', 'JPY').
    """
    try:
        # Using Frankfurter API (Free, no API key required)
        url = f"https://api.frankfurter.dev/v1/latest?amount={amount}&from={from_currency.upper()}&to={to_currency.upper()}"
        response = requests.get(url)
        data = response.json()
        
        if response.status_code == 200:
            converted_amount = data['rates'][to_currency.upper()]
            date = data['date']
            return f"{amount} {from_currency.upper()} is equal to {converted_amount:.2f} {to_currency.upper()} (Rate as of {date})."
        else:
            return f"Error: Could not convert. Please check if the currency codes are correct (e.g., USD, INR)."
    except Exception as e:
        return f"An error occurred: {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:
        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)}"

# --- AGENT SETUP ---

final_answer = FinalAnswerTool()
image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)

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

with open("prompts.yaml", 'r') as stream:
    prompt_templates = yaml.safe_load(stream)
    
agent = CodeAgent(
    model=model,
    tools=[
        final_answer, 
        get_current_time_in_timezone, 
        image_generation_tool,
        convert_currency # <--- Currency tool added here
    ],
    max_steps=6,
    verbosity_level=1,
    prompt_templates=prompt_templates
)

if __name__ == "__main__":
    GradioUI(agent).launch()