from cryptography.x509.oid import ExtensionOID

SANS_DELIMITER = ','


class ArtifactParser:

  def __init__(self, mount_path, ext):
    self.keystorePassPath = mount_path + '/keystore.pass'
    self.keystorePath = mount_path + '/keystore.' + ext
    self.truststorePassPath = mount_path + '/truststore.pass'
    self.truststorePath = mount_path + '/truststore.' + ext

  def contains_expected_data(self, data):
    expectedData = data.expectedData
    actualData = data.actualData
    return cmp(expectedData, actualData) == 0

  def get_owner_data_from_certificate(self, certificate):
    list = certificate.get_subject().get_components()
    return dict((k, v) for k, v in list)

  def get_sans(self, cert):
    sans = cert.to_cryptography().extensions.get_extension_for_oid(ExtensionOID.SUBJECT_ALTERNATIVE_NAME).value
    sans_strings = [str(alt_name.value) for alt_name in sans]
    return self.get_sorted_sans(sans_strings)

  def get_envs_as_dict(self, list):
    envs = self.get_list_of_pairs_by_mappings(list)
    SANS = 'SANS'
    sans_env_strings = SANS in envs and envs[SANS].split(SANS_DELIMITER) or []
    envs[SANS] = self.get_sorted_sans(sans_env_strings)
    return self.remove_nones_from_dict(envs)

  def get_sorted_sans(self, sans_strings):
    sans_strings.sort()
    return SANS_DELIMITER.join(sans_strings)

  def remove_nones_from_dict(self, dictionary):
    return dict((k, v) for k, v in dictionary.iteritems() if k is not None)

  def get_list_of_pairs_by_mappings(self, list):
    mappings = self.get_mappings()
    listOfEnvs = map(lambda k: k.split('='), list)
    return dict((mappings.get(a[0]), a[1]) for a in listOfEnvs)

  def get_mappings(self):
    return {'COMMON_NAME':'CN', 'ORGANIZATION':'O', 'ORGANIZATION_UNIT':'OU', 'LOCATION':'L', 'STATE':'ST', 'COUNTRY':'C', 'SANS':'SANS'}