#!/usr/bin/env python3.12

import logging

from fastapi import FastAPI, Response, HTTPException, Security
from fastapi.security import APIKeyHeader, APIKeyQuery

global api_key_query
global api_key_header

class Utilities:
    def __init__(self, app: FastAPI, constants):
        self.constants = constants
        self.blocked_response_status = 422
        self.blocked_response_content = None
               
        self.api_key_query = APIKeyQuery(name=constants.API_KEY_NAME, auto_error=False)
        self.api_key_header = APIKeyHeader(name=f"x-{constants.API_KEY_NAME}", auto_error=False)

    def get_blocked_response(self, path: str | None = None):
        logging.error("Rejected request: Blocked")
        return Response(content=self.blocked_response_content,
        status_code=self.blocked_response_status)

    def get_no_endpoint_found(self, path: str | None = None):
        logging.error("Rejected request: No such endpoint")
        raise HTTPException(detail="Unknown endpoint", status_code=404)

    def check_key(self, path: str, key: str):
        """
        Accepts path as an argument to allow fine tuning access for each API key, not currently in use.
        """

        print(f"Testing with path: {path}, key: {key}")

        if not key or not key.startswith("Bearer "):
            return False
        
        key = key.split("Bearer ", maxsplit=1)[1].strip()

        if not key in self.constants.API_KEYS:
            print("Auth failed.")
            return False

        print("Auth succeeded")
        return True