from ldap3 import ALL_ATTRIBUTES
from phi.ldap.utils import get_response, make_user_dict, add_entry, delete_entry
from phi.logging import get_logger

log = get_logger(__name__)


def get_user_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 = get_response(client, response_id)

    if not response:
        return None

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

    return make_user_dict(client, response[0])


def get_all_users(client):
    log.info("Searching all the users")

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

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

    response = get_response(client, response_id)

    users = [make_user_dict(client, entry) for entry in response]
    return users


def add_user(client, uid, cn, sn, mail, password):
    dn = 'uid={},ou=Hackers,{}'.format(uid, client.base_dn)

    attributes={
        'objectClass': [
            'inetOrgPerson',
            'organizationalPerson',
            'person', 'top'
            ],
        'cn': cn,
        'sn': sn,
        'mail': mail,
        'userPassword': password  # TODO: use hashed password
    }

    add_entry(client, dn, attributes)


def delete_user(client, user):
    delete_entry(client, user['dn'])


def delete_user_by_uid(client, uid):
    dn = 'uid={},ou=Hackers,{}'.format(uid, client.base_dn)
    delete_entry(client, dn)