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 with complete docstrings
@tool
def currency_converter(amount: float, from_currency: str, to_currency: str) -> str:
    """Convert between currencies using real-time exchange rates
    Args:
        amount: The amount to convert (positive number)
        from_currency: Currency code to convert from (3-letter ISO code like USD)
        to_currency: Currency code to convert to (3-letter ISO code like EUR)
    """
    try:
        url = f"https://api.exchangerate-api.com/v4/latest/{from_currency}"
        response = requests.get(url)
        rates = response.json()["rates"]
        converted = amount * rates[to_currency]
        return f"Convertion of {amount} {from_currency} = {converted:.2f} {to_currency}"
    except Exception as e:
        return f"Error converting {amount} {from_currency} to {to_currency}"

@tool
def website_availability(url: str) -> str:
    """Check if a website is online and responsive
    Args:
        url: The full URL of the website to check (including protocol like https://)
    """
    try:
        response = requests.get(url, timeout=5)
        return f"Website {url} is online (Status: {response.status_code})"
    except requests.exceptions.RequestException:
        return f"Website {url} is unreachable"

@tool
def text_summarizer(long_text: str) -> str:
    """Summarize long text documents
    Args:
        long_text: The text content to summarize (at least 3 sentences)
    """
    try:
        sentences = long_text.split('.')
        return '. '.join(sentences[:3]) + '...'
    except Exception as e:
        return f"Error summarizing text"

@tool
def get_current_time_in_timezone(timezone: str) -> str:
    """Get current time in a specific timezone
    Args:
        timezone: Valid timezone name (e.g. America/New_York or Asia/Tokyo)
    """
    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: {str(e)}"

@tool
def get_current_weather(city: str) -> str:
    """Get current weather for a city
    Args:
        city: City name (e.g. Paris, London, Tokyo)
    """
    try:
        # Using a free weather API (no key required)
        url = f"https://wttr.in/{city}?format=%C+%t+%w"
        response = requests.get(url)
        return f"Weather in {city}: {response.text.strip()}"
    except Exception as e:
        return f"Weather lookup failed: {str(e)}"

final_answer = FinalAnswerTool()

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

# Load only working tools 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)
    
# Build tools list
all_tools = [
    final_answer,
    DuckDuckGoSearchTool(),  # Built-in search
    image_generation_tool,
    get_current_weather,     # Our custom weather tool
    get_current_time_in_timezone,
    currency_converter,
    website_availability,
    text_summarizer
]

agent = CodeAgent(
    model=model,
    tools=all_tools,
    max_steps=12,
    verbosity_level=1,
    grammar=None,
    planning_interval=None,
    name=None,
    description=None,
    prompt_templates=prompt_templates
)

GradioUI(agent).launch()