"""
title: Calculator
author: open-webui
author_url: https://github.com/open-webui
funding_url: https://github.com/open-webui
version: 0.1.0
"""


import os
import requests
from datetime import datetime


class Tools:
    def __init__(self):
        pass

    # Add your custom tools using pure Python code here, make sure to add type hints
    # Use Sphinx-style docstrings to document your tools, they will be used for generating tools specifications
    # Please refer to function_calling_filter_pipeline.py file from pipelines project for an example

    def calculator(self, equation: str) -> str:
        """
        Calculate the result of an equation.
        :param equation: The equation to calculate.
        """

        # Avoid using eval in production code
        # https://nedbatchelder.com/blog/201206/eval_really_is_dangerous.html
        try:
            result = eval(equation)
            return f"{equation} = {result}"
        except Exception as e:
            print(e)
            return "Invalid equation"