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

@tool
def wikipedia_summary(query: str) -> str:
    """Fetches a summary from Wikipedia for a given search query.
    Args:
        query: The topic to search on Wikipedia.
    """
    try:
        url = "https://en.wikipedia.org/api/rest_v1/page/summary/" + query.replace(" ", "_")
        response = requests.get(url, timeout=10)
        if response.status_code == 200:
            data = response.json()
            title = data.get("title", "Unknown")
            extract = data.get("extract", "No summary available.")
            page_url = data.get("content_urls", {}).get("desktop", {}).get("page", "")
            return f"**{title}**\n\n{extract}\n\nRead more: {page_url}"
        else:
            return f"Could not find a Wikipedia article for '{query}'."
    except Exception as e:
        return f"Error fetching Wikipedia summary: {str(e)}"

@tool
def currency_converter(amount: float, from_currency: str, to_currency: str) -> str:
    """Converts an amount from one currency to another using live exchange rates.
    Args:
        amount: The amount of money to convert.
        from_currency: The source currency code in uppercase ('USD', 'EUR', 'TRY').
        to_currency: The target currency code in uppercase.
    """
    try:
        from_currency = from_currency.upper()
        to_currency = to_currency.upper()
        url = f"https://api.exchangerate-api.com/v4/latest/{from_currency}"
        response = requests.get(url, timeout=10)
        if response.status_code == 200:
            data = response.json()
            if to_currency in data["rates"]:
                rate = data["rates"][to_currency]
                result = round(amount * rate, 2)
                return f"{amount} {from_currency} = {result} {to_currency} (rate: {rate})"
            else:
                return f"Currency '{to_currency}' not found. Use standard codes like USD, EUR, GBP, TRY, JPY."
        else:
            return f"Could not fetch exchange rates for '{from_currency}'."
    except Exception as e:
        return f"Error converting currency: {str(e)}"


@tool
def generate_password(length: int) -> str:
    """Generates a random secure password of a given length.
    Args:
        length: The desired password length.
    """
    import random
    import string
    length = max(8, min(length, 128))
    
    # Ensure at least one of each character type
    password = [
        random.choice(string.ascii_uppercase),
        random.choice(string.ascii_lowercase),
        random.choice(string.digits),
        random.choice(string.punctuation),
    ]
    remaining = length - len(password)
    all_chars = string.ascii_letters + string.digits + string.punctuation
    password += [random.choice(all_chars) for _ in range(remaining)]
    random.shuffle(password)
    return f"Generated password ({length} chars): {''.join(password)}"

@tool
def days_until(date_str: str) -> str:
    """Calculates the number of days from today until a given target date.
    Args:
        date_str: The target date in YYYY-MM-DD format ('2026-12-31').
    """
    try:
        target = datetime.datetime.strptime(date_str, "%Y-%m-%d").date()
        today = datetime.date.today()
        delta = (target - today).days
        if delta > 0:
            return f"There are {delta} days from today ({today}) until {date_str}."
        elif delta == 0:
            return f"That date is TODAY! ({today})"
        else:
            return f"That date was {abs(delta)} days ago (today is {today})."
    except ValueError:
        return f"Invalid date format '{date_str}'. Please use YYYY-MM-DD (e.g., '2026-12-31')."


@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 ('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=0.2, 
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,
        DuckDuckGoSearchTool(),
        get_current_time_in_timezone,
        wikipedia_summary,
        currency_converter,
        generate_password,
        days_until,
        image_generation_tool,  
    ],
    max_steps=7,
    verbosity_level=0,
    grammar=None,
    planning_interval=None,
    name=None,
    description=None,
    prompt_templates=prompt_templates
)


GradioUI(agent).launch()