from .base import Tool
import numpy as np
from typing import List, Dict

class WebSearch(Tool):
    def __init__(self, api_key: str):
        super().__init__(
            name="web_search",
            description="Search the web using DuckDuckGo API"
        )
        self.api_key = api_key

    def execute(self, query: str, max_results: int = 5) -> List[Dict]:
        # Implementation using DuckDuckGo API
        return [{"title": "Result", "snippet": "Content", "url": "URL"}]

class Calculator(Tool):
    def __init__(self):
        super().__init__(
            name="calculator",
            description="Perform mathematical calculations"
        )

    def execute(self, expression: str) -> float:
        # Safely evaluate mathematical expressions
        return eval(expression, {"__builtins__": {}}, 
                   {"np": np, "sin": np.sin, "cos": np.cos})


class TimezoneTool(Tool):
    def __init__(self):
        super().__init__(
            name="timezone",
            description="Convert between timezones"
        )

    def execute(self, time: str, from_tz: str, to_tz: str) -> str:
        # Implementation for timezone conversion
        pass

class UnitConverter(Tool):
    def __init__(self):
        super().__init__(
            name="unit_converter",
            description="Convert between different units"
        )

    def execute(self, value: float, from_unit: str, to_unit: str) -> float:
        # Implementation for unit conversion
        pass
