from datetime import datetime, UTC

from ocpp.v201.datatypes import IdTokenInfoType
from ocpp.v201.enums import AuthorizationStatusType

from app.database import SessionLocal
from app.models.id_token import IdToken
from app.models.chargepoint import ChargePoint

async def get_id_token_info(chargepoint_id: str, id_token: str):
        owner_id = None
        if id_token["type"] not in ["ISO14443", "ISO15693"]:
            return IdTokenInfoType(
                status=AuthorizationStatusType.invalid
            ), owner_id
        
        with SessionLocal() as db:
            db_id_token = db.query(IdToken).filter(IdToken.token == id_token["id_token"]).first()
            if db_id_token == None:
                id_token_info = IdTokenInfoType(
                    status=AuthorizationStatusType.unknown
                )
                db_chargepoint = db.query(ChargePoint).filter(ChargePoint.identity == chargepoint_id).first()
                # Learn token if requested
                if db_chargepoint.learn_user_id != None:
                    if db_chargepoint.learn_until.timestamp() > datetime.now(UTC).timestamp():
                        db_id_token = IdToken()
                        db_id_token.friendly_name = "New token learned by {}".format(chargepoint_id)
                        db_id_token.is_active = True
                        db_id_token.owner_id = db_chargepoint.learn_user_id
                        db_id_token.token = id_token["id_token"]
                        db.add(db_id_token)

                        id_token_info=IdTokenInfoType(
                            status=AuthorizationStatusType.accepted
                        )
                        owner_id = db_id_token.owner_id
                    db_chargepoint.learn_user_id = None
                    db_chargepoint.learn_until = None
                    db.commit()
            else:
                owner_id = db_id_token.owner_id
                if db_id_token.is_active == False:
                    id_token_info=IdTokenInfoType(
                        status=AuthorizationStatusType.blocked
                    )
                else:
                    id_token_info=IdTokenInfoType(
                        status=AuthorizationStatusType.accepted
                    )
            return id_token_info, owner_id