import logging

from tfw.internals.crypto import KeyManager, verify_message

from .event_handler import EventHandler

LOG = logging.getLogger(__name__)


# pylint: disable=abstract-method
class SignedEventHandler(EventHandler):
    def __init__(self, connector):
        self._auth_key = KeyManager().auth_key
        super().__init__(connector)

    def _validate_message(self, message):
        is_valid = verify_message(self._auth_key, message)
        if not is_valid:
            LOG.error('Message does not have valid signature: %s', message)
        return is_valid