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

# ---------------------------- TOOLS ----------------------------

# 1. Get Current Time in Any Timezone
@tool
def get_current_time_in_timezone(timezone: str) -> str:
    """Fetches the current local time in a specified timezone.
    Args:
        timezone: A valid timezone string (e.g., 'America/New_York').
    Returns:
        A string with the current local time in the requested timezone.
    """
    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)}"

# 2. Get Current Weather Data
@tool
def get_weather(city: str) -> str:
    """Fetches current weather information for a specified city.
    Args:
        city: The name of the city (e.g., 'New York').
    Returns:
        A string with the weather description and temperature.
    """
    api_key = "ac662b5c2463cfa522e1acd2d4cf5a81"
    url = f"http://api.openweathermap.org/data/2.5/weather?q={city}&appid={api_key}&units=metric"
    
    try:
        response = requests.get(url).json()
        if response["cod"] != 200:
            return f"Error: {response['message']}"
        
        temp = response["main"]["temp"]
        weather_desc = response["weather"][0]["description"]
        return f"The current weather in {city} is {weather_desc} with a temperature of {temp}°C."
    except Exception as e:
        return f"Error fetching weather data: {str(e)}"

# 3. Currency Exchange Converter
@tool
def convert_currency(amount: float, from_currency: str, to_currency: str) -> str:
    """Converts currency from one type to another using real-time exchange rates.
    Args:
        amount: The amount to convert.
        from_currency: Source currency code (e.g., 'USD').
        to_currency: Target currency code (e.g., 'INR').
    Returns:
        A string with the converted currency amount.
    """
    api_key = "90171124ae953d74d1515263"
    url = f"https://v6.exchangerate-api.com/v6/{api_key}/latest/{from_currency}"
    
    try:
        response = requests.get(url).json()
        if "conversion_rates" not in response:
            return "Error: Unable to fetch exchange rates."
        
        rate = response["conversion_rates"].get(to_currency)
        if rate is None:
            return "Error: Unsupported currency code."
        
        converted_amount = round(amount * rate, 2)
        return f"{amount} {from_currency} is equal to {converted_amount} {to_currency}."
    except Exception as e:
        return f"Error fetching exchange rates: {str(e)}"

# ---------------------------- MODEL & AGENT SETUP ----------------------------

# Load Hugging Face Text-to-Image Tool
image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)

# Load Final Answer Tool
final_answer = FinalAnswerTool()

# Initialize Model
model = HfApiModel(
    max_tokens=2096,
    temperature=0.5,
    model_id="Qwen/Qwen2.5-Coder-32B-Instruct",
)

# Load Prompt Templates
with open("prompts.yaml", "r") as stream:
    prompt_templates = yaml.safe_load(stream)

# Create AI Agent with Defined Tools
agent = CodeAgent(
    model=model,
    tools=[
        final_answer,
        get_current_time_in_timezone,
        get_weather,
        convert_currency,
        DuckDuckGoSearchTool(),
        image_generation_tool,
    ],
    max_steps=6,
    verbosity_level=1,
    prompt_templates=prompt_templates,
)

# ---------------------------- LAUNCH APPLICATION ----------------------------

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