from starlette.requests import Request

from .base import SecurityBase
from fastapi.openapi.models import OAuth2 as OAuth2Model, OAuthFlows as OAuthFlowsModel


class OAuth2(SecurityBase):
    def __init__(self, *, flows: OAuthFlowsModel = OAuthFlowsModel(), scheme_name: str = None):
        self.model = OAuth2Model(flows=flows)
        self.scheme_name = scheme_name or self.__class__.__name__
    
    async def __call__(self, request: Request):
        return request.headers.get("Authorization")