import os
import ldap
import logging
import pytest
from lib389 import DirSrv, Entry
from lib389._constants import *
from lib389.properties import *
from lib389.tasks import *
from lib389.utils import *

logging.getLogger(__name__).setLevel(logging.DEBUG)
log = logging.getLogger(__name__)

installation1_prefix = None


class TopologyStandalone(object):
    def __init__(self, standalone):
        standalone.open()
        self.standalone = standalone


@pytest.fixture(scope="module")
def topology(request):
    global installation1_prefix
    if installation1_prefix:
        args_instance[SER_DEPLOYED_DIR] = installation1_prefix

    # Creating standalone instance ...
    standalone = DirSrv(verbose=False)
    args_instance[SER_HOST] = HOST_STANDALONE
    args_instance[SER_PORT] = PORT_STANDALONE
    args_instance[SER_SERVERID_PROP] = SERVERID_STANDALONE
    args_instance[SER_CREATION_SUFFIX] = DEFAULT_SUFFIX
    args_standalone = args_instance.copy()
    standalone.allocate(args_standalone)
    instance_standalone = standalone.exists()
    if instance_standalone:
        standalone.delete()
    standalone.create()
    standalone.open()

    # Delete each instance in the end
    def fin():
        standalone.delete()
    request.addfinalizer(fin)

    # Clear out the tmp dir
    standalone.clearTmpDir(__file__)

    return TopologyStandalone(standalone)


def test_ticket48370(topology):
    """
    Deleting attirbute values and readding a value does not properly update
    the pres index.  The values are not actually deleted from the index
    """

    DN = 'uid=user0099,' + DEFAULT_SUFFIX

    #
    # Add an entry
    #
    topology.standalone.add_s(Entry((DN, {
                              'objectclass': ['top', 'person',
                                              'organizationalPerson',
                                              'inetorgperson',
                                              'posixAccount'],
                              'givenname': 'test',
                              'sn': 'user',
                              'loginshell': '/bin/bash',
                              'uidNumber': '10099',
                              'gidNumber': '10099',
                              'gecos': 'Test User',
                              'mail': ['user0099@dev.null',
                                       'alias@dev.null',
                                       'user0099@redhat.com'],
                              'cn': 'Test User',
                              'homeDirectory': '/home/user0099',
                              'uid': 'admin2',
                              'userpassword': 'password'})))

    #
    # Perform modify (delete & add mail attributes)
    #
    try:
        topology.standalone.modify_s(DN, [(ldap.MOD_DELETE,
                                           'mail',
                                           'user0099@dev.null'),
                                          (ldap.MOD_DELETE,
                                           'mail',
                                           'alias@dev.null'),
                                          (ldap.MOD_ADD,
                                           'mail', 'user0099@dev.null')])
    except ldap.LDAPError as e:
        log.fatal('Failedto modify user: ' + str(e))
        assert False

    #
    # Search using deleted attribute value- no entries should be returned
    #
    try:
        entry = topology.standalone.search_s(DEFAULT_SUFFIX,
                                             ldap.SCOPE_SUBTREE,
                                             'mail=alias@dev.null')
        if entry:
            log.fatal('Entry incorrectly returned')
            assert False
    except ldap.LDAPError as e:
        log.fatal('Failed to search for user: ' + str(e))
        assert False

    #
    # Search using existing attribute value - the entry should be returned
    #
    try:
        entry = topology.standalone.search_s(DEFAULT_SUFFIX,
                                             ldap.SCOPE_SUBTREE,
                                             'mail=user0099@dev.null')
        if entry is None:
            log.fatal('Entry not found, but it should have been')
            assert False
    except ldap.LDAPError as e:
        log.fatal('Failed to search for user: ' + str(e))
        assert False

    #
    # Delete the last values
    #
    try:
        topology.standalone.modify_s(DN, [(ldap.MOD_DELETE,
                                           'mail',
                                           'user0099@dev.null'),
                                          (ldap.MOD_DELETE,
                                           'mail',
                                           'user0099@redhat.com')
                                          ])
    except ldap.LDAPError as e:
        log.fatal('Failed to modify user: ' + str(e))
        assert False

    #
    # Search using deleted attribute value - no entries should be returned
    #
    try:
        entry = topology.standalone.search_s(DEFAULT_SUFFIX,
                                             ldap.SCOPE_SUBTREE,
                                             'mail=user0099@redhat.com')
        if entry:
            log.fatal('Entry incorrectly returned')
            assert False
    except ldap.LDAPError as e:
        log.fatal('Failed to search for user: ' + str(e))
        assert False

    #
    # Make sure presence index is correctly updated - no entries should be
    # returned
    #
    try:
        entry = topology.standalone.search_s(DEFAULT_SUFFIX,
                                             ldap.SCOPE_SUBTREE,
                                             'mail=*')
        if entry:
            log.fatal('Entry incorrectly returned')
            assert False
    except ldap.LDAPError as e:
        log.fatal('Failed to search for user: ' + str(e))
        assert False

    #
    # Now add the attributes back, and lets run a different set of tests with
    # a different number of attributes
    #
    try:
        topology.standalone.modify_s(DN, [(ldap.MOD_ADD,
                                           'mail',
                                           ['user0099@dev.null',
                                            'alias@dev.null'])])
    except ldap.LDAPError as e:
        log.fatal('Failedto modify user: ' + str(e))
        assert False

    #
    # Remove and readd some attibutes
    #
    try:
        topology.standalone.modify_s(DN, [(ldap.MOD_DELETE,
                                           'mail',
                                           'alias@dev.null'),
                                          (ldap.MOD_DELETE,
                                           'mail',
                                           'user0099@dev.null'),
                                          (ldap.MOD_ADD,
                                           'mail', 'user0099@dev.null')])
    except ldap.LDAPError as e:
        log.fatal('Failedto modify user: ' + str(e))
        assert False

    #
    # Search using deleted attribute value - no entries should be returned
    #
    try:
        entry = topology.standalone.search_s(DEFAULT_SUFFIX,
                                             ldap.SCOPE_SUBTREE,
                                             'mail=alias@dev.null')
        if entry:
            log.fatal('Entry incorrectly returned')
            assert False
    except ldap.LDAPError as e:
        log.fatal('Failed to search for user: ' + str(e))
        assert False

    #
    # Search using existing attribute value - the entry should be returned
    #
    try:
        entry = topology.standalone.search_s(DEFAULT_SUFFIX,
                                             ldap.SCOPE_SUBTREE,
                                             'mail=user0099@dev.null')
        if entry is None:
            log.fatal('Entry not found, but it should have been')
            assert False
    except ldap.LDAPError as e:
        log.fatal('Failed to search for user: ' + str(e))
        assert False

    log.info('Test PASSED')


if __name__ == '__main__':
    # Run isolated
    # -s for DEBUG mode
    CURRENT_FILE = os.path.realpath(__file__)
    pytest.main("-s %s" % CURRENT_FILE)