from ldap3 import ALL_ATTRIBUTES, ALL_OPERATIONAL_ATTRIBUTES

from phi.logging import get_logger

log = get_logger(__name__)


def get_entry_by_uid(client, uid):
    log.info("Searching entry with identifier: {}".format(uid))

    filter_ = "({}={})".format('uid', uid)
    log.debug("Search filter: {}".format(filter_))

    response_id = client.connection.search(
        client.base_dn, filter_,
        search_scope='SUBTREE',
        attributes=[ALL_ATTRIBUTES]
    )

    response, result, request = client.connection.get_response(
        response_id, get_request=True
    )

    log.debug("Request: {}".format(request))
    log.debug("Response: {}".format(response))
    log.debug("Result: {}".format(result))

    if not response:
        return None

    if response[1:]:
        log.error("Looking for exactly one result but server gave {}. "
                  "Taking the first and ignoring the rest."
                  .format(len(response)))

    return response[0]


def get_entries_by_ou(client, ou):
    log.info("Searching entries with organizational unit: {}".format(ou))

    dn = 'ou={},{}'.format(ou, client.base_dn)
    log.debug("Search dn: {}".format(dn))

    response_id = client.connection.search(
        dn, '(objectclass=person)',
        search_scope='SUBTREE',
        attributes=[ALL_ATTRIBUTES]
    )

    response, result, request = client.connection.get_response(
        response_id, get_request=True
    )

    return response