from sfa.util.method import Method
from sfa.util.sfalogging import logger

from sfa.trust.credential import Credential

from sfa.storage.parameter import Parameter, Mixed


class Register(Method):
    """
    Register an object with the registry. In addition to being stored in the
    SFA database, the appropriate records will also be created in the
    PLC databases

    @param cred credential string
    @param record_dict dictionary containing record fields

    @return gid string representation
    """

    interfaces = ['registry']

    accepts = [
        Parameter(dict, "Record dictionary containing record fields"),
        Mixed(Parameter(str, "Credential string"),
              Parameter(type([str]), "List of credentials")),
    ]

    returns = Parameter(int, "String representation of gid object")

    def call(self, record, creds):
        # validate cred
        valid_creds = self.api.auth.checkCredentials(creds, 'register')

        # verify permissions
        hrn = record.get('hrn', '')
        self.api.auth.verify_object_permission(hrn)

        # log the call
        origin_hrn = Credential(
            string=valid_creds[0]).get_gid_caller().get_hrn()
        logger.info("interface: %s\tcaller-hrn: %s\ttarget-hrn: %s\tmethod-name: %s" %
                    (self.api.interface, origin_hrn, hrn, self.name))

        return self.api.manager.Register(self.api, record)