from smolagents import CodeAgent, DuckDuckGoSearchTool, HfApiModel, load_tool, tool
import datetime
import requests
import pytz
import yaml
import os
from typing import Optional, Dict, Any, List
from tools.final_answer import FinalAnswerTool
from Gradio_UI import GradioUI

# Timezone tools
@tool
def get_current_time_in_timezone(timezone: str) -> str:
    """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)}"

@tool
def list_available_timezones() -> str:
    """Lists all available timezone names grouped by region."""
    all_timezones = pytz.all_timezones
    timezone_dict = {}
    
    for tz in all_timezones:
        region = tz.split('/', 1)[0] if '/' in tz else 'Other'
        if region not in timezone_dict:
            timezone_dict[region] = []
        timezone_dict[region].append(tz)
    
    result = []
    for region, zones in timezone_dict.items():
        result.append(f"{region}: {', '.join(zones[:5])}" + 
                    (f" and {len(zones)-5} more..." if len(zones) > 5 else ""))
    
    return "\n".join(result)

# Weather tool
@tool
def get_weather(location: str) -> str:
    """Fetches current weather information for a specified location.
    
    Args:
        location: A string representing a city or location (e.g., 'New York').
    """
    # This is a mock implementation - in a real app, you would use a weather API
    # Example with OpenWeatherMap: https://openweathermap.org/api
    return f"Weather information for {location}: Simulated weather data (add API key and implement actual API call)"

# Load prompt templates
try:
    with open("prompts.yaml", 'r') as stream:
        prompt_templates = yaml.safe_load(stream)
except Exception as e:
    print(f"Error loading prompt templates: {e}")
    prompt_templates = {}

# Initialize tools
final_answer = FinalAnswerTool()

# If the agent does not answer, the model is overloaded, please use another model or the following Hugging Face Endpoint
model = HfApiModel(
    max_tokens=2096,
    temperature=0.5,
    model_id='Qwen/Qwen2.5-Coder-32B-Instruct',  # it is possible that this model may be overloaded
    custom_role_conversions=None,
)

# Load image generation tool
try:
    image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)
except Exception as e:
    print(f"Failed to load image generation tool: {e}")
    image_generation_tool = None

# Setup the agent with all tools
tools = [
    final_answer,
    get_current_time_in_timezone,
    list_available_timezones,
    get_weather
]

# Conditionally add image generation if loaded successfully
if image_generation_tool:
    tools.append(image_generation_tool)

# Initialize the agent
agent = CodeAgent(
    model=model,
    tools=tools,
    max_steps=6,
    verbosity_level=1,
    grammar=None,
    planning_interval=None,
    name=None,
    description=None,
    prompt_templates=prompt_templates
)

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