import os
from langchain.tools import BaseTool



class QAIndexedDocuments(BaseTool):
    name = "Question Answering Tool for Indexed Documents"
    description  = (
        "use this tool when asked to search and find answers in documents. "
        "If explicitly asked to search in indexed documents, this tool will search in the indexed documents. "
        "To use the tool you must provide exactly one parameters as follows "
        "['question']"
    )
    return_direct = True

    def _run(
        self,
        question: str,
    ):
        return index.query_with_sources(question)
    
    def _arun(self, query: str):
        raise NotImplementedError("This tool does not support async")