import pytest
from helpers.client import QueryRuntimeException
from helpers.cluster import ClickHouseCluster

cluster = ClickHouseCluster(__file__)

TABLE_NAME = "test"


@pytest.fixture(scope="module")
def start_cluster():
    try:
        cluster.add_instance(
            "node1",
            main_configs=[
                "configs/config.d/storage_configuration.xml",
                "configs/config.d/remote_servers.xml",
            ],
            with_zookeeper=True,
            stay_alive=True,
            with_minio=True,
            macros={"replica": "node1", "shard": "shard1"},
        )
        cluster.add_instance(
            "node2",
            main_configs=[
                "configs/config.d/storage_configuration.xml",
                "configs/config.d/remote_servers.xml",
            ],
            with_zookeeper=True,
            stay_alive=True,
            with_minio=True,
            macros={"replica": "node2", "shard": "shard1"},
        )
        cluster.add_instance(
            "node3",
            main_configs=[
                "configs/config.d/storage_configuration.xml",
                "configs/config.d/remote_servers.xml",
                "configs/config.d/mergetree_settings.xml",
            ],
            stay_alive=True,
            with_minio=True,
        )

        cluster.start()
        yield cluster

    finally:
        cluster.shutdown()


def test_merge_tree_disk_setting(start_cluster):
    node1 = cluster.instances["node1"]

    node1.query(
        f"""
        DROP TABLE IF EXISTS {TABLE_NAME};
        CREATE TABLE {TABLE_NAME} (a Int32)
        ENGINE = MergeTree()
        ORDER BY tuple()
        SETTINGS disk = 's3';
    """
    )

    minio = cluster.minio_client
    count = len(list(minio.list_objects(cluster.minio_bucket, "data/", recursive=True)))

    node1.query(f"INSERT INTO {TABLE_NAME} SELECT number FROM numbers(100)")
    assert int(node1.query(f"SELECT count() FROM {TABLE_NAME}")) == 100
    assert (
        len(list(minio.list_objects(cluster.minio_bucket, "data/", recursive=True)))
        > count
    )

    node1.query(
        f"""
        DROP TABLE IF EXISTS {TABLE_NAME}_2;
        CREATE TABLE {TABLE_NAME}_2 (a Int32)
        ENGINE = MergeTree()
        ORDER BY tuple()
        SETTINGS disk = 's3';
    """
    )

    node1.query(f"INSERT INTO {TABLE_NAME}_2 SELECT number FROM numbers(100)")
    assert int(node1.query(f"SELECT count() FROM {TABLE_NAME}_2")) == 100

    assert (
        "__s3"
        in node1.query(
            f"SELECT storage_policy FROM system.tables WHERE name = '{TABLE_NAME}'"
        ).strip()
    )
    assert (
        "__s3"
        in node1.query(
            f"SELECT storage_policy FROM system.tables WHERE name = '{TABLE_NAME}_2'"
        ).strip()
    )

    node1.query("SYSTEM RELOAD CONFIG")
    assert not node1.contains_in_log(
        "An error has occurred while reloading storage policies, storage policies were not applied"
    )
    assert (
        "['s3']"
        in node1.query(
            "SELECT disks FROM system.storage_policies WHERE policy_name = '__s3'"
        ).strip()
    )

    node1.restart_clickhouse()

    assert (
        "_s3"
        in node1.query(
            f"SELECT storage_policy FROM system.tables WHERE name = '{TABLE_NAME}'"
        ).strip()
    )
    assert (
        "['s3']"
        in node1.query(
            "SELECT disks FROM system.storage_policies WHERE policy_name = '__s3'"
        ).strip()
    )
    assert int(node1.query(f"SELECT count() FROM {TABLE_NAME}")) == 100

    node1.query(f"DROP TABLE {TABLE_NAME} SYNC")
    node1.query(f"DROP TABLE {TABLE_NAME}_2 SYNC")

    for obj in list(minio.list_objects(cluster.minio_bucket, "data/", recursive=True)):
        minio.remove_object(cluster.minio_bucket, obj.object_name)


def test_merge_tree_custom_disk_setting(start_cluster):
    node1 = cluster.instances["node1"]
    node2 = cluster.instances["node2"]

    node1.query(
        f"""
        DROP TABLE IF EXISTS {TABLE_NAME};
        CREATE TABLE {TABLE_NAME} (a Int32)
        ENGINE = MergeTree()
        ORDER BY tuple()
        SETTINGS
            disk = disk(
                type=s3,
                endpoint='http://minio1:9001/root/data/',
                access_key_id='minio',
                secret_access_key='minio123');
    """
    )

    # Check that data was indeed created on s3 with the needed path in s3

    minio = cluster.minio_client
    count = len(list(minio.list_objects(cluster.minio_bucket, "data/", recursive=True)))

    node1.query(f"INSERT INTO {TABLE_NAME} SELECT number FROM numbers(100)")
    assert int(node1.query(f"SELECT count() FROM {TABLE_NAME}")) == 100
    assert (
        len(list(minio.list_objects(cluster.minio_bucket, "data/", recursive=True)))
        > count
    )

    # Check that data for the second table was created on the same disk on the same path

    node1.query(
        f"""
        DROP TABLE IF EXISTS {TABLE_NAME}_2;
        CREATE TABLE {TABLE_NAME}_2 (a Int32)
        ENGINE = MergeTree()
        ORDER BY tuple()
        SETTINGS
            disk = disk(
                type=s3,
                endpoint='http://minio1:9001/root/data/',
                access_key_id='minio',
                secret_access_key='minio123');
    """
    )

    count = len(list(minio.list_objects(cluster.minio_bucket, "data/", recursive=True)))
    node1.query(f"INSERT INTO {TABLE_NAME}_2 SELECT number FROM numbers(100)")
    assert int(node1.query(f"SELECT count() FROM {TABLE_NAME}_2")) == 100
    assert (
        len(list(minio.list_objects(cluster.minio_bucket, "data/", recursive=True)))
        > count
    )

    # Check that data for a disk with a different path was created on the different path

    for obj in list(minio.list_objects(cluster.minio_bucket, "data2/", recursive=True)):
        minio.remove_object(cluster.minio_bucket, obj.object_name)

    node1.query(
        f"""
        DROP TABLE IF EXISTS {TABLE_NAME}_3;
        CREATE TABLE {TABLE_NAME}_3 (a Int32)
        ENGINE = MergeTree()
        ORDER BY tuple()
        SETTINGS
            disk = disk(
                type=s3,
                endpoint='http://minio1:9001/root/data2/',
                access_key_id='minio',
                secret_access_key='minio123');
    """
    )
    count = len(list(minio.list_objects(cluster.minio_bucket, "data/", recursive=True)))
    node1.query(f"INSERT INTO {TABLE_NAME}_3 SELECT number FROM numbers(100)")
    assert int(node1.query(f"SELECT count() FROM {TABLE_NAME}_3")) == 100
    assert (
        len(list(minio.list_objects(cluster.minio_bucket, "data/", recursive=True)))
        == count
    )
    assert (
        len(list(minio.list_objects(cluster.minio_bucket, "data2/", recursive=True)))
        > 0
    )

    # check DETACH ATTACH

    node1.query(f"DETACH TABLE {TABLE_NAME}")
    node1.query(f"ATTACH TABLE {TABLE_NAME}")

    node1.query(f"INSERT INTO {TABLE_NAME} SELECT number FROM numbers(100)")
    assert int(node1.query(f"SELECT count() FROM {TABLE_NAME}")) == 200

    # check after server restart the same disk path is used with the same metadata

    node1.restart_clickhouse()

    node1.query(f"INSERT INTO {TABLE_NAME} SELECT number FROM numbers(100)")
    assert int(node1.query(f"SELECT count() FROM {TABLE_NAME}")) == 300

    # check reload config does not wipe custom disk

    node1.query("SYSTEM RELOAD CONFIG")
    assert not node1.contains_in_log(
        "disappeared from configuration, this change will be applied after restart of ClickHouse"
    )
    assert int(node1.query(f"SELECT count() FROM {TABLE_NAME}")) == 300

    # check replicated merge tree on cluster

    replica = "{replica}"
    node1.query(
        f"""
        DROP TABLE IF EXISTS {TABLE_NAME}_4;
        CREATE TABLE {TABLE_NAME}_4 ON CLUSTER 'cluster' (a Int32)
        ENGINE=ReplicatedMergeTree('/clickhouse/tables/tbl/', '{replica}')
        ORDER BY tuple()
        SETTINGS
            disk = disk(
                type=s3,
                endpoint='http://minio1:9001/root/data2/',
                access_key_id='minio',
                secret_access_key='minio123');
    """
    )

    expected = """
        SETTINGS disk = disk(type = s3, endpoint = \\'[HIDDEN]\\', access_key_id = \\'[HIDDEN]\\', secret_access_key = \\'[HIDDEN]\\'), index_granularity = 8192
    """

    assert expected.strip() in node1.query(f"SHOW CREATE TABLE {TABLE_NAME}_4").strip()
    assert expected.strip() in node2.query(f"SHOW CREATE TABLE {TABLE_NAME}_4").strip()

    node1.restart_clickhouse()
    node2.restart_clickhouse()

    assert expected.strip() in node1.query(f"SHOW CREATE TABLE {TABLE_NAME}_4").strip()
    assert expected.strip() in node2.query(f"SHOW CREATE TABLE {TABLE_NAME}_4").strip()

    # check that disk names are the same for all replicas

    policy1 = node1.query(
        f"SELECT storage_policy FROM system.tables WHERE name = '{TABLE_NAME}_4'"
    ).strip()

    policy2 = node2.query(
        f"SELECT storage_policy FROM system.tables WHERE name = '{TABLE_NAME}_4'"
    ).strip()

    assert policy1 == policy2
    assert (
        node1.query(
            f"SELECT disks FROM system.storage_policies WHERE policy_name = '{policy1}'"
        ).strip()
        == node2.query(
            f"SELECT disks FROM system.storage_policies WHERE policy_name = '{policy2}'"
        ).strip()
    )

    node1.query(f"DROP TABLE {TABLE_NAME} SYNC")
    node1.query(f"DROP TABLE {TABLE_NAME}_2 SYNC")
    node1.query(f"DROP TABLE {TABLE_NAME}_3 SYNC")
    node1.query(f"DROP TABLE {TABLE_NAME}_4 SYNC")
    node2.query(f"DROP TABLE {TABLE_NAME}_4 SYNC")


def test_merge_tree_nested_custom_disk_setting(start_cluster):
    node = cluster.instances["node1"]

    minio = cluster.minio_client
    for obj in list(minio.list_objects(cluster.minio_bucket, "data/", recursive=True)):
        minio.remove_object(cluster.minio_bucket, obj.object_name)
    assert (
        len(list(minio.list_objects(cluster.minio_bucket, "data/", recursive=True)))
        == 0
    )

    node.query(
        f"""
        DROP TABLE IF EXISTS {TABLE_NAME} SYNC;
        CREATE TABLE {TABLE_NAME} (a Int32)
        ENGINE = MergeTree() order by tuple()
        SETTINGS disk = disk(
                type=cache,
                max_size='1Gi',
                path='/var/lib/clickhouse/custom_disk_cache/',
                disk=disk(
                    type=s3,
                    endpoint='http://minio1:9001/root/data/',
                    access_key_id='minio',
                    secret_access_key='minio123'));
    """
    )

    node.query(f"INSERT INTO {TABLE_NAME} SELECT number FROM numbers(100)")
    node.query("SYSTEM DROP FILESYSTEM CACHE")

    # Check cache is filled
    assert 0 == int(node.query("SELECT count() FROM system.filesystem_cache"))
    assert 100 == int(node.query(f"SELECT count() FROM {TABLE_NAME}"))
    node.query(f"SELECT * FROM {TABLE_NAME}")
    assert 0 < int(node.query("SELECT count() FROM system.filesystem_cache"))

    # Check s3 is filled
    assert (
        len(list(minio.list_objects(cluster.minio_bucket, "data/", recursive=True))) > 0
    )

    node.restart_clickhouse()

    assert 100 == int(node.query(f"SELECT count() FROM {TABLE_NAME}"))

    expected = """
        SETTINGS disk = disk(type = cache, max_size = \\'[HIDDEN]\\', path = \\'[HIDDEN]\\', disk = disk(type = s3, endpoint = \\'[HIDDEN]\\'
    """
    assert expected.strip() in node.query(f"SHOW CREATE TABLE {TABLE_NAME}").strip()
    node.query(f"DROP TABLE {TABLE_NAME} SYNC")


def test_merge_tree_setting_override(start_cluster):
    node = cluster.instances["node3"]
    assert (
        "MergeTree settings `storage_policy` and `disk` cannot be specified at the same time"
        in node.query_and_get_error(
            f"""
        DROP TABLE IF EXISTS {TABLE_NAME};
        CREATE TABLE {TABLE_NAME} (a Int32)
        ENGINE = MergeTree()
        ORDER BY tuple()
        SETTINGS disk = 'kek', storage_policy = 's3';
    """
        )
    )

    assert "Unknown storage policy" in node.query_and_get_error(
        f"""
        DROP TABLE IF EXISTS {TABLE_NAME};
        CREATE TABLE {TABLE_NAME} (a Int32)
        ENGINE = MergeTree()
        ORDER BY tuple();
    """
    )

    assert "Unknown disk" in node.query_and_get_error(
        f"""
        DROP TABLE IF EXISTS {TABLE_NAME};
        CREATE TABLE {TABLE_NAME} (a Int32)
        ENGINE = MergeTree()
        ORDER BY tuple()
        SETTINGS disk = 'kek';
    """
    )

    node.query(
        f"""
        DROP TABLE IF EXISTS {TABLE_NAME} NO DELAY;
        CREATE TABLE {TABLE_NAME} (a Int32)
        ENGINE = MergeTree()
        ORDER BY tuple()
        SETTINGS
            disk = disk(
                type=s3,
                endpoint='http://minio1:9001/root/data/',
                access_key_id='minio',
                secret_access_key='minio123');
    """
    )

    minio = cluster.minio_client
    node.query(f"INSERT INTO {TABLE_NAME} SELECT number FROM numbers(100)")
    assert int(node.query(f"SELECT count() FROM {TABLE_NAME}")) == 100
    assert (
        len(list(minio.list_objects(cluster.minio_bucket, "data/", recursive=True))) > 0
    )

    node.query(
        f"""
        DROP TABLE IF EXISTS {TABLE_NAME} NO DELAY;
        CREATE TABLE {TABLE_NAME} (a Int32)
        ENGINE = MergeTree()
        ORDER BY tuple()
        SETTINGS disk = 's3'
    """
    )

    minio = cluster.minio_client
    node.query(f"INSERT INTO {TABLE_NAME} SELECT number FROM numbers(100)")
    assert int(node.query(f"SELECT count() FROM {TABLE_NAME}")) == 100
    assert (
        len(list(minio.list_objects(cluster.minio_bucket, "data/", recursive=True))) > 0
    )
    node.query(f"DROP TABLE {TABLE_NAME} SYNC")