import pytest
from helpers.cluster import ClickHouseCluster

cluster = ClickHouseCluster(__file__)
ch1 = cluster.add_instance('ch1', main_configs=["configs/config.d/clusters.xml"], with_zookeeper=True)
ch2 = cluster.add_instance('ch2', main_configs=["configs/config.d/clusters.xml"], with_zookeeper=True)
ch3 = cluster.add_instance('ch3', main_configs=["configs/config.d/clusters.xml"], with_zookeeper=True)


@pytest.fixture(scope="module", autouse=True)
def started_cluster():
    try:
        cluster.start()
        yield cluster

    finally:
        cluster.shutdown()


def test_access_control_on_cluster():
    ch1.query_with_retry("CREATE USER IF NOT EXISTS Alex ON CLUSTER 'cluster'", retry_count=5)
    assert ch1.query("SHOW CREATE USER Alex") == "CREATE USER Alex\n"
    assert ch2.query("SHOW CREATE USER Alex") == "CREATE USER Alex\n"
    assert ch3.query("SHOW CREATE USER Alex") == "CREATE USER Alex\n"

    ch2.query_with_retry("GRANT ON CLUSTER 'cluster' SELECT ON *.* TO Alex", retry_count=3)
    assert ch1.query("SHOW GRANTS FOR Alex") == "GRANT SELECT ON *.* TO Alex\n"
    assert ch2.query("SHOW GRANTS FOR Alex") == "GRANT SELECT ON *.* TO Alex\n"
    assert ch3.query("SHOW GRANTS FOR Alex") == "GRANT SELECT ON *.* TO Alex\n"

    ch3.query_with_retry("REVOKE ON CLUSTER 'cluster' SELECT ON *.* FROM Alex", retry_count=3)
    assert ch1.query("SHOW GRANTS FOR Alex") == ""
    assert ch2.query("SHOW GRANTS FOR Alex") == ""
    assert ch3.query("SHOW GRANTS FOR Alex") == ""

    ch2.query_with_retry("DROP USER Alex ON CLUSTER 'cluster'", retry_count=3)
    assert "There is no user `Alex`" in ch1.query_and_get_error("SHOW CREATE USER Alex")
    assert "There is no user `Alex`" in ch2.query_and_get_error("SHOW CREATE USER Alex")
    assert "There is no user `Alex`" in ch3.query_and_get_error("SHOW CREATE USER Alex")