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


# 🔧 Improved Custom Tool (Calculator)
@tool
def smart_calculator(expression: str) -> str:
    """Evaluates a mathematical expression safely.
    Args:
        expression: A math expression like '2+2*10'
    """
    try:
        result = eval(expression)
        return f"Result: {result}"
    except Exception as e:
        return f"Error: {str(e)}"


# 🕒 Time Tool (unchanged but useful)
@tool
def get_current_time_in_timezone(timezone: str) -> str:
    """Fetches current local time in a timezone.
    Args:
        timezone: e.g. 'Asia/Kolkata'
    """
    try:
        tz = pytz.timezone(timezone)
        local_time = datetime.datetime.now(tz).strftime("%Y-%m-%d %H:%M:%S")
        return f"Time in {timezone}: {local_time}"
    except Exception as e:
        return f"Error: {str(e)}"


# 🌐 News Tool (NEW)
@tool
def get_latest_news(topic: str) -> str:
    """Fetch latest news on a topic.
    Args:
        topic: e.g. 'AI', 'India'
    """
    try:
        search = DuckDuckGoSearchTool()
        return search.run(f"{topic} latest news")
    except Exception as e:
        return f"Error fetching news: {str(e)}"


# 🎯 Final Answer Tool (required)
final_answer = FinalAnswerTool()


# 🤖 Better Model (more general-purpose)
model = HfApiModel(
    max_tokens=2096,
    temperature=0.5,
    model_id='Qwen/Qwen2.5-72B-Instruct',  # upgraded model
    custom_role_conversions=None,
)


# 🎨 Image Generation Tool
image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)


# 📄 Load prompt templates
with open("prompts.yaml", 'r') as stream:
    prompt_templates = yaml.safe_load(stream)


# 🚀 Enhanced Agent
agent = CodeAgent(
    model=model,
    tools=[
        final_answer,
        smart_calculator,
        get_current_time_in_timezone,
        get_latest_news,
        DuckDuckGoSearchTool(),
        image_generation_tool
    ],
    max_steps=6,
    verbosity_level=2,
    grammar=None,
    planning_interval=None,
    name="Smart AI Agent",
    description="An AI agent that can search the web, calculate, fetch news, tell time, and generate images.",
    prompt_templates=prompt_templates
)


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