from itsdangerous import URLSafeTimedSerializer
import conf
from bootstrap import application


def generate_confirmation_token(nickname):
    serializer = URLSafeTimedSerializer(application.config['SECRET_KEY'])
    return serializer.dumps(nickname, salt=application.config['SECURITY_PASSWORD_SALT'])


def confirm_token(token):
    serializer = URLSafeTimedSerializer(application.config['SECRET_KEY'])
    try:
        nickname = serializer.loads(
            token,
            salt=application.config['SECURITY_PASSWORD_SALT'],
            max_age=conf.TOKEN_VALIDITY_PERIOD
        )
    except:
        return False
    return nickname