import logging
import sys

import pytest
from helpers.cluster import ClickHouseCluster

logging.getLogger().setLevel(logging.INFO)
logging.getLogger().addHandler(logging.StreamHandler())


@pytest.fixture(scope="module")
def cluster():
    try:
        cluster = ClickHouseCluster(__file__)
        cluster.add_instance("node",
                             main_configs=["configs/minio.xml", "configs/ssl.xml", "configs/config.d/log_conf.xml"],
                             with_minio=True, stay_alive=True)
        logging.info("Starting cluster...")
        cluster.start()

        logging.info("Cluster started")

        yield cluster
    finally:
        cluster.shutdown()


def assert_objects_count(cluster, objects_count, path='data/'):
    minio = cluster.minio_client
    s3_objects = list(minio.list_objects(cluster.minio_bucket, path))
    if objects_count != len(s3_objects):
        for s3_object in s3_objects:
            object_meta = minio.stat_object(cluster.minio_bucket, s3_object.object_name)
            logging.info("Existing S3 object: %s", str(object_meta))
        assert objects_count == len(s3_objects)


def test_set_s3(cluster):
    node = cluster.instances["node"]

    node.query("CREATE TABLE testLocalSet (n UInt64) Engine = Set")
    node.query("CREATE TABLE testS3Set (n UInt64) Engine = Set SETTINGS disk='s3'")

    node.query("INSERT INTO TABLE testLocalSet VALUES (1)")
    node.query("INSERT INTO TABLE testS3Set VALUES (1)")

    assert node.query("SELECT number in testLocalSet, number in testS3Set FROM system.numbers LIMIT 3") == "0\t0\n1\t1\n0\t0\n"
    assert_objects_count(cluster, 1)

    node.query("INSERT INTO TABLE testLocalSet VALUES (2)")
    node.query("INSERT INTO TABLE testS3Set VALUES (2)")

    assert node.query("SELECT number in testLocalSet, number in testS3Set FROM system.numbers LIMIT 3") == "0\t0\n1\t1\n1\t1\n"
    assert_objects_count(cluster, 2)

    node.restart_clickhouse()
    assert node.query("SELECT number in testLocalSet, number in testS3Set FROM system.numbers LIMIT 3") == "0\t0\n1\t1\n1\t1\n"

    node.query("TRUNCATE TABLE testLocalSet")
    node.query("TRUNCATE TABLE testS3Set")

    assert node.query("SELECT number in testLocalSet, number in testS3Set FROM system.numbers LIMIT 3") == "0\t0\n0\t0\n0\t0\n"
    assert_objects_count(cluster, 0)

    node.query("DROP TABLE testLocalSet")
    node.query("DROP TABLE testS3Set")


def test_join_s3(cluster):
    node = cluster.instances["node"]

    node.query("CREATE TABLE testLocalJoin(`id` UInt64, `val` String) ENGINE = Join(ANY, LEFT, id)")
    node.query("CREATE TABLE testS3Join(`id` UInt64, `val` String) ENGINE = Join(ANY, LEFT, id) SETTINGS disk='s3'")

    node.query("INSERT INTO testLocalJoin VALUES (1, 'a')")
    node.query("INSERT INTO testS3Join VALUES (1, 'a')")

    assert node.query("SELECT joinGet('testLocalJoin', 'val', number) as local, joinGet('testS3Join', 'val', number) as s3 FROM system.numbers LIMIT 3") == "\t\na\ta\n\t\n"
    assert_objects_count(cluster, 1)

    node.query("INSERT INTO testLocalJoin VALUES (2, 'b')")
    node.query("INSERT INTO testS3Join VALUES (2, 'b')")

    assert node.query("SELECT joinGet('testLocalJoin', 'val', number) as local, joinGet('testS3Join', 'val', number) as s3 FROM system.numbers LIMIT 3") == "\t\na\ta\nb\tb\n"
    assert_objects_count(cluster, 2)

    node.restart_clickhouse()
    assert node.query("SELECT joinGet('testLocalJoin', 'val', number) as local, joinGet('testS3Join', 'val', number) as s3 FROM system.numbers LIMIT 3") == "\t\na\ta\nb\tb\n"

    node.query("TRUNCATE TABLE testLocalJoin")
    node.query("TRUNCATE TABLE testS3Join")

    assert node.query("SELECT joinGet('testLocalJoin', 'val', number) as local, joinGet('testS3Join', 'val', number) as s3 FROM system.numbers LIMIT 3") == "\t\n\t\n\t\n"
    assert_objects_count(cluster, 0)

    node.query("DROP TABLE testLocalJoin")
    node.query("DROP TABLE testS3Join")