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

# 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 currency_converter(from_currency: str, to_currency: str, amount: float) -> str:
#     """Convert an amount of money from one currency to another using ExchangeRate.host.
#     Args:
#         from_currency: 3-letter ISO currency code to convert from (e.g., 'USD', 'EUR').
#         to_currency: 3-letter ISO currency code to convert to (e.g., 'EUR', 'JPY').
#         amount: The numeric amount to convert (e.g., 123.45).
#     """
#     try:
#         if not isinstance(from_currency, str) or not isinstance(to_currency, str):
#             return "Both 'from_currency' and 'to_currency' must be strings like 'USD', 'EUR'."
#         if not isinstance(amount, (int, float)):
#             return "'amount' must be a number."

#         from_code = from_currency.strip().upper()
#         to_code = to_currency.strip().upper()
#         if len(from_code) != 3 or len(to_code) != 3:
#             return "Currency codes must be 3 letters (e.g., 'USD', 'EUR')."

#         resp = requests.get(
#             "https://api.exchangerate.host/convert",
#             params={"from": from_code, "to": to_code, "amount": amount},
#             timeout=10
#         )
#         if resp.status_code != 200:
#             return f"Conversion API error: HTTP {resp.status_code}"

#         data = resp.json()
#         if not data.get("success", False):
#             return f"Conversion failed: {data}"

#         result = data.get("result", None)
#         rate = data.get("info", {}).get("rate", None)
#         if result is None or rate is None:
#             return "Could not parse conversion result."

#         return (
#             f"{amount:.2f} {from_code} → {result:.2f} {to_code} "
#             f"(rate: 1 {from_code} = {rate:.6f} {to_code})"
#         )
#     except Exception as e:
#         return f"Error during conversion: {str(e)}"


@tool
def currency_converter(from_currency: str, to_currency: str, amount: float) -> str:
    """Convert an amount from one currency to another using the ECB public daily rates (EUR base, no API key).
    Args:
        from_currency: 3-letter ISO code (e.g., 'USD', 'EUR').
        to_currency: 3-letter ISO code (e.g., 'JPY', 'GBP').
        amount: numeric amount to convert.
    """
    import requests, xml.etree.ElementTree as ET

    # Normalize inputs
    if not isinstance(from_currency, str) or not isinstance(to_currency, str):
        return "Both 'from_currency' and 'to_currency' must be strings like 'USD', 'EUR'."
    if not isinstance(amount, (int, float)):
        return "'amount' must be a number."
    from_code = from_currency.strip().upper()
    to_code = to_currency.strip().upper()

    # ECB provides rates with EUR as base, daily XML (no key)
    # Source: https://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml
    try:
        resp = requests.get("https://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml", timeout=10)
        if resp.status_code != 200:
            return f"ECB feed error: HTTP {resp.status_code}"
        root = ET.fromstring(resp.content)

        # Parse rates into dict with EUR=1.0
        ns = {"gesmes": "http://www.gesmes.org/xml/2002-08-01", "def": "http://www.ecb.int/vocabulary/2002-08-01/eurofxref"}
        # The XML structure: root -> Cube -> Cube time -> multiple Cube currency/rate
        # We'll be robust and just search for all Cube elements with currency attributes.
        rates = {"EUR": 1.0}
        for cube in root.iter():
            if cube.attrib.get("currency") and cube.attrib.get("rate"):
                rates[cube.attrib["currency"].upper()] = float(cube.attrib["rate"])

        # Validate currencies
        if from_code not in rates and from_code != "EUR":
            return f"Unsupported from_currency '{from_code}'. (ECB publishes ~30+ majors vs EUR.)"
        if to_code not in rates and to_code != "EUR":
            return f"Unsupported to_currency '{to_code}'. (ECB publishes ~30+ majors vs EUR.)"

        # Convert via EUR base:
        # amount_from in FROM -> EUR: amount / rate(FROM)
        # EUR -> TO: × rate(TO)
        from_rate = rates[from_code] if from_code != "EUR" else 1.0
        to_rate = rates[to_code] if to_code != "EUR" else 1.0

        # Guard against zero
        if from_rate == 0:
            return f"Invalid rate for {from_code}."
        result = (amount / from_rate) * to_rate

        return (f"{amount:.4f} {from_code} → {result:.4f} {to_code} "
                f"(via EUR | 1 {from_code} = {(to_rate/from_rate):.6f} {to_code})")
    except Exception as e:
        return f"Conversion error: {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='https://pflgm2locj2t89co.us-east-1.aws.endpoints.huggingface.cloud',
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,currency_converter,get_current_time_in_timezone,image_generation_tool], ## 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()