import os
import sys

import pytest

sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__))

from helpers.cluster import ClickHouseCluster

cluster = ClickHouseCluster(__file__)
node = cluster.add_instance('node', stay_alive=True, main_configs=[])


# Something like https://reviews.llvm.org/D33325
def skip_test_msan(instance):
    if instance.is_built_with_memory_sanitizer():
        pytest.skip("Memory Sanitizer cannot work with vfork")


def copy_file_to_container(local_path, dist_path, container_id):
    os.system("docker cp {local} {cont_id}:{dist}".format(local=local_path, cont_id=container_id, dist=dist_path))

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

        copy_file_to_container(os.path.join(SCRIPT_DIR, 'user_scripts/.'), '/var/lib/clickhouse/user_scripts', node.docker_id)
        node.restart_clickhouse()

        node.query("CREATE TABLE test_data_table (id UInt64) ENGINE=TinyLog;")
        node.query("INSERT INTO test_data_table VALUES (0), (1), (2);")

        yield cluster

    finally:
        cluster.shutdown()

def test_executable_function_no_input_bash(started_cluster):
    skip_test_msan(node)
    assert node.query("SELECT * FROM executable('no_input.sh', 'TabSeparated', 'value String')") == 'Key 0\nKey 1\nKey 2\n'

def test_executable_function_no_input_python(started_cluster):
    skip_test_msan(node)
    assert node.query("SELECT * FROM executable('no_input.py', 'TabSeparated', 'value String')") == 'Key 0\nKey 1\nKey 2\n'

def test_executable_function_input_bash(started_cluster):
    skip_test_msan(node)

    query = "SELECT * FROM executable('input.sh', 'TabSeparated', 'value String', {source})"
    assert node.query(query.format(source='(SELECT 1)')) == 'Key 1\n'
    assert node.query(query.format(source='(SELECT id FROM test_data_table)')) == 'Key 0\nKey 1\nKey 2\n'

def test_executable_function_input_python(started_cluster):
    skip_test_msan(node)

    query = "SELECT * FROM executable('input.py', 'TabSeparated', 'value String', {source})"
    assert node.query(query.format(source='(SELECT 1)')) == 'Key 1\n'
    assert node.query(query.format(source='(SELECT id FROM test_data_table)')) == 'Key 0\nKey 1\nKey 2\n'

def test_executable_function_input_sum_python(started_cluster):
    skip_test_msan(node)

    query = "SELECT * FROM executable('input_sum.py', 'TabSeparated', 'value UInt64', {source})"
    assert node.query(query.format(source='(SELECT 1, 1)')) == '2\n'
    assert node.query(query.format(source='(SELECT id, id FROM test_data_table)')) == '0\n2\n4\n'

def test_executable_function_input_argument_python(started_cluster):
    skip_test_msan(node)

    query = "SELECT * FROM executable('input_argument.py 1', 'TabSeparated', 'value String', {source})"
    assert node.query(query.format(source='(SELECT 1)')) == 'Key 1 1\n'
    assert node.query(query.format(source='(SELECT id FROM test_data_table)')) == 'Key 1 0\nKey 1 1\nKey 1 2\n'

def test_executable_function_input_signalled_python(started_cluster):
    skip_test_msan(node)

    query = "SELECT * FROM executable('input_signalled.py', 'TabSeparated', 'value String', {source})"
    assert node.query(query.format(source='(SELECT 1)')) == ''
    assert node.query(query.format(source='(SELECT id FROM test_data_table)')) == ''

def test_executable_function_input_slow_python(started_cluster):
    skip_test_msan(node)

    query = "SELECT * FROM executable('input_slow.py', 'TabSeparated', 'value String', {source})"
    assert node.query_and_get_error(query.format(source='(SELECT 1)'))
    assert node.query_and_get_error(query.format(source='(SELECT id FROM test_data_table)'))

def test_executable_function_input_multiple_pipes_python(started_cluster):
    skip_test_msan(node)
    query = "SELECT * FROM executable('input_multiple_pipes.py', 'TabSeparated', 'value String', {source})"
    actual = node.query(query.format(source='(SELECT 1), (SELECT 2), (SELECT 3)'))
    expected = 'Key from 4 fd 3\nKey from 3 fd 2\nKey from 0 fd 1\n'
    assert actual == expected

    actual = node.query(query.format(source='(SELECT id FROM test_data_table), (SELECT 2), (SELECT 3)'))
    expected = 'Key from 4 fd 3\nKey from 3 fd 2\nKey from 0 fd 0\nKey from 0 fd 1\nKey from 0 fd 2\n'
    assert actual == expected

def test_executable_storage_no_input_bash(started_cluster):
    skip_test_msan(node)
    node.query("DROP TABLE IF EXISTS test_table")
    node.query("CREATE TABLE test_table (value String) ENGINE=Executable('no_input.sh', 'TabSeparated')")
    assert node.query("SELECT * FROM test_table") == 'Key 0\nKey 1\nKey 2\n'
    node.query("DROP TABLE test_table")

def test_executable_storage_no_input_python(started_cluster):
    skip_test_msan(node)
    node.query("DROP TABLE IF EXISTS test_table")
    node.query("CREATE TABLE test_table (value String) ENGINE=Executable('no_input.py', 'TabSeparated')")
    assert node.query("SELECT * FROM test_table") == 'Key 0\nKey 1\nKey 2\n'
    node.query("DROP TABLE test_table")

def test_executable_storage_input_bash(started_cluster):
    skip_test_msan(node)

    query = "CREATE TABLE test_table (value String) ENGINE=Executable('input.sh', 'TabSeparated', {source})"

    node.query("DROP TABLE IF EXISTS test_table")
    node.query(query.format(source='(SELECT 1)'))
    assert node.query("SELECT * FROM test_table") == 'Key 1\n'
    node.query("DROP TABLE test_table")

    node.query(query.format(source='(SELECT id FROM test_data_table)'))
    assert node.query("SELECT * FROM test_table") == 'Key 0\nKey 1\nKey 2\n'
    node.query("DROP TABLE test_table")

def test_executable_storage_input_python(started_cluster):
    skip_test_msan(node)

    query = "CREATE TABLE test_table (value String) ENGINE=Executable('input.py', 'TabSeparated', {source})"

    node.query("DROP TABLE IF EXISTS test_table")
    node.query(query.format(source='(SELECT 1)'))
    assert node.query("SELECT * FROM test_table") == 'Key 1\n'
    node.query("DROP TABLE test_table")

    node.query(query.format(source='(SELECT id FROM test_data_table)'))
    assert node.query("SELECT * FROM test_table") == 'Key 0\nKey 1\nKey 2\n'
    node.query("DROP TABLE test_table")

def test_executable_storage_input_send_chunk_header_python(started_cluster):
    skip_test_msan(node)

    query = "CREATE TABLE test_table (value String) ENGINE=Executable('input_chunk_header.py', 'TabSeparated', {source}) SETTINGS send_chunk_header=1"

    node.query("DROP TABLE IF EXISTS test_table")
    node.query(query.format(source='(SELECT 1)'))
    assert node.query("SELECT * FROM test_table") == 'Key 1\n'
    node.query("DROP TABLE test_table")

    node.query(query.format(source='(SELECT id FROM test_data_table)'))
    assert node.query("SELECT * FROM test_table") == 'Key 0\nKey 1\nKey 2\n'
    node.query("DROP TABLE test_table")

def test_executable_storage_input_sum_python(started_cluster):
    skip_test_msan(node)

    query = "CREATE TABLE test_table (value UInt64) ENGINE=Executable('input_sum.py', 'TabSeparated', {source})"

    node.query("DROP TABLE IF EXISTS test_table")
    node.query(query.format(source='(SELECT 1, 1)'))
    assert node.query("SELECT * FROM test_table") == '2\n'
    node.query("DROP TABLE test_table")

    node.query(query.format(source='(SELECT id, id FROM test_data_table)'))
    assert node.query("SELECT * FROM test_table") == '0\n2\n4\n'
    node.query("DROP TABLE test_table")

def test_executable_storage_input_argument_python(started_cluster):
    skip_test_msan(node)

    query = "CREATE TABLE test_table (value String) ENGINE=Executable('input_argument.py 1', 'TabSeparated', {source})"

    node.query("DROP TABLE IF EXISTS test_table")
    node.query(query.format(source='(SELECT 1)'))
    assert node.query("SELECT * FROM test_table") == 'Key 1 1\n'
    node.query("DROP TABLE test_table")

    node.query(query.format(source='(SELECT id FROM test_data_table)'))
    assert node.query("SELECT * FROM test_table") == 'Key 1 0\nKey 1 1\nKey 1 2\n'
    node.query("DROP TABLE test_table")

def test_executable_storage_input_signalled_python(started_cluster):
    skip_test_msan(node)

    query = "CREATE TABLE test_table (value String) ENGINE=Executable('input_signalled.py', 'TabSeparated', {source})"

    node.query("DROP TABLE IF EXISTS test_table")
    node.query(query.format(source='(SELECT 1)'))
    assert node.query("SELECT * FROM test_table") == ''
    node.query("DROP TABLE test_table")

    node.query(query.format(source='(SELECT id FROM test_data_table)'))
    assert node.query("SELECT * FROM test_table") == ''
    node.query("DROP TABLE test_table")

def test_executable_storage_input_slow_python(started_cluster):
    skip_test_msan(node)

    query = "CREATE TABLE test_table (value String) ENGINE=Executable('input_slow.py', 'TabSeparated', {source}) SETTINGS command_read_timeout=2500"

    node.query("DROP TABLE IF EXISTS test_table")
    node.query(query.format(source='(SELECT 1)'))
    assert node.query_and_get_error("SELECT * FROM test_table")
    node.query("DROP TABLE test_table")

    node.query(query.format(source='(SELECT id FROM test_data_table)'))
    assert node.query_and_get_error("SELECT * FROM test_table")
    node.query("DROP TABLE test_table")

def test_executable_function_input_multiple_pipes_python(started_cluster):
    skip_test_msan(node)

    query = "CREATE TABLE test_table (value String) ENGINE=Executable('input_multiple_pipes.py', 'TabSeparated', {source})"

    node.query("DROP TABLE IF EXISTS test_table")
    node.query(query.format(source='(SELECT 1), (SELECT 2), (SELECT 3)'))
    assert node.query("SELECT * FROM test_table") == 'Key from 4 fd 3\nKey from 3 fd 2\nKey from 0 fd 1\n'
    node.query("DROP TABLE test_table")

    node.query(query.format(source='(SELECT id FROM test_data_table), (SELECT 2), (SELECT 3)'))
    assert node.query("SELECT * FROM test_table") == 'Key from 4 fd 3\nKey from 3 fd 2\nKey from 0 fd 0\nKey from 0 fd 1\nKey from 0 fd 2\n'
    node.query("DROP TABLE test_table")

def test_executable_pool_storage_input_python(started_cluster):
    skip_test_msan(node)

    query = "CREATE TABLE test_table (value String) ENGINE=ExecutablePool('input_pool.py', 'TabSeparated', {source}) SETTINGS send_chunk_header=1, pool_size=1"

    node.query("DROP TABLE IF EXISTS test_table")
    node.query(query.format(source='(SELECT 1)'))

    assert node.query("SELECT * FROM test_table") == 'Key 1\n'
    assert node.query("SELECT * FROM test_table") == 'Key 1\n'
    assert node.query("SELECT * FROM test_table") == 'Key 1\n'

    node.query("DROP TABLE test_table")

    node.query(query.format(source='(SELECT id FROM test_data_table)'))

    assert node.query("SELECT * FROM test_table") == 'Key 0\nKey 1\nKey 2\n'
    assert node.query("SELECT * FROM test_table") == 'Key 0\nKey 1\nKey 2\n'
    assert node.query("SELECT * FROM test_table") == 'Key 0\nKey 1\nKey 2\n'

    node.query("DROP TABLE test_table")

def test_executable_pool_storage_input_sum_python(started_cluster):
    skip_test_msan(node)

    query = "CREATE TABLE test_table (value UInt64) ENGINE=ExecutablePool('input_sum_pool.py', 'TabSeparated', {source}) SETTINGS send_chunk_header=1, pool_size=1"

    node.query("DROP TABLE IF EXISTS test_table")
    node.query(query.format(source='(SELECT 1, 1)'))

    assert node.query("SELECT * FROM test_table") == '2\n'
    assert node.query("SELECT * FROM test_table") == '2\n'
    assert node.query("SELECT * FROM test_table") == '2\n'

    node.query("DROP TABLE test_table")

    node.query(query.format(source='(SELECT id, id FROM test_data_table)'))

    assert node.query("SELECT * FROM test_table") == '0\n2\n4\n'
    assert node.query("SELECT * FROM test_table") == '0\n2\n4\n'
    assert node.query("SELECT * FROM test_table") == '0\n2\n4\n'

    node.query("DROP TABLE test_table")

def test_executable_pool_storage_input_argument_python(started_cluster):
    skip_test_msan(node)

    query = "CREATE TABLE test_table (value String) ENGINE=ExecutablePool('input_argument_pool.py 1', 'TabSeparated', {source}) SETTINGS send_chunk_header=1, pool_size=1"

    node.query("DROP TABLE IF EXISTS test_table")
    node.query(query.format(source='(SELECT 1)'))

    assert node.query("SELECT * FROM test_table") == 'Key 1 1\n'
    assert node.query("SELECT * FROM test_table") == 'Key 1 1\n'
    assert node.query("SELECT * FROM test_table") == 'Key 1 1\n'

    node.query("DROP TABLE test_table")

    node.query(query.format(source='(SELECT id FROM test_data_table)'))

    assert node.query("SELECT * FROM test_table") == 'Key 1 0\nKey 1 1\nKey 1 2\n'
    assert node.query("SELECT * FROM test_table") == 'Key 1 0\nKey 1 1\nKey 1 2\n'
    assert node.query("SELECT * FROM test_table") == 'Key 1 0\nKey 1 1\nKey 1 2\n'

    node.query("DROP TABLE test_table")

def test_executable_pool_storage_input_signalled_python(started_cluster):
    skip_test_msan(node)

    query = "CREATE TABLE test_table (value String) ENGINE=ExecutablePool('input_signalled_pool.py', 'TabSeparated', {source}) SETTINGS send_chunk_header=1, pool_size=1"

    node.query("DROP TABLE IF EXISTS test_table")
    node.query(query.format(source='(SELECT 1)'))

    assert node.query_and_get_error("SELECT * FROM test_table")
    assert node.query_and_get_error("SELECT * FROM test_table")
    assert node.query_and_get_error("SELECT * FROM test_table")

    node.query("DROP TABLE test_table")

    node.query(query.format(source='(SELECT id FROM test_data_table)'))

    assert node.query_and_get_error("SELECT * FROM test_table")
    assert node.query_and_get_error("SELECT * FROM test_table")
    assert node.query_and_get_error("SELECT * FROM test_table")

    node.query("DROP TABLE test_table")

def test_executable_pool_storage_input_slow_python(started_cluster):
    skip_test_msan(node)

    query = """CREATE TABLE test_table (value String)
        ENGINE=ExecutablePool('input_slow_pool.py', 'TabSeparated', {source})
        SETTINGS send_chunk_header=1, pool_size=1, command_read_timeout=2500"""

    node.query("DROP TABLE IF EXISTS test_table")
    node.query(query.format(source='(SELECT 1)'))

    assert node.query_and_get_error("SELECT * FROM test_table")
    assert node.query_and_get_error("SELECT * FROM test_table")
    assert node.query_and_get_error("SELECT * FROM test_table")

    node.query("DROP TABLE test_table")

    node.query(query.format(source='(SELECT id FROM test_data_table)'))

    assert node.query_and_get_error("SELECT * FROM test_table")
    assert node.query_and_get_error("SELECT * FROM test_table")
    assert node.query_and_get_error("SELECT * FROM test_table")

    node.query("DROP TABLE test_table")

def test_executable_pool_storage_input_multiple_pipes_python(started_cluster):
    skip_test_msan(node)

    query = "CREATE TABLE test_table (value String) ENGINE=ExecutablePool('input_multiple_pipes_pool.py', 'TabSeparated', {source}) SETTINGS send_chunk_header=1, pool_size=1"

    node.query("DROP TABLE IF EXISTS test_table")
    node.query(query.format(source='(SELECT 1), (SELECT 2), (SELECT 3)'))

    assert node.query("SELECT * FROM test_table") == 'Key from 4 fd 3\nKey from 3 fd 2\nKey from 0 fd 1\n'
    assert node.query("SELECT * FROM test_table") == 'Key from 4 fd 3\nKey from 3 fd 2\nKey from 0 fd 1\n'
    assert node.query("SELECT * FROM test_table") == 'Key from 4 fd 3\nKey from 3 fd 2\nKey from 0 fd 1\n'

    node.query("DROP TABLE test_table")

    node.query(query.format(source='(SELECT id FROM test_data_table), (SELECT 2), (SELECT 3)'))

    assert node.query("SELECT * FROM test_table") == 'Key from 4 fd 3\nKey from 3 fd 2\nKey from 0 fd 0\nKey from 0 fd 1\nKey from 0 fd 2\n'
    assert node.query("SELECT * FROM test_table") == 'Key from 4 fd 3\nKey from 3 fd 2\nKey from 0 fd 0\nKey from 0 fd 1\nKey from 0 fd 2\n'
    assert node.query("SELECT * FROM test_table") == 'Key from 4 fd 3\nKey from 3 fd 2\nKey from 0 fd 0\nKey from 0 fd 1\nKey from 0 fd 2\n'

    node.query("DROP TABLE test_table")

def test_executable_pool_storage_input_count_python(started_cluster):
    skip_test_msan(node)

    query = "CREATE TABLE test_table (value String) ENGINE=ExecutablePool('input_count_pool.py', 'TabSeparated', {source}) SETTINGS send_chunk_header=1, pool_size=1"

    node.query("DROP TABLE IF EXISTS test_table")
    node.query(query.format(source='(SELECT 1)'))

    assert node.query("SELECT * FROM test_table") == '1\n'
    assert node.query("SELECT * FROM test_table") == '1\n'
    assert node.query("SELECT * FROM test_table") == '1\n'

    node.query("DROP TABLE test_table")

    node.query(query.format(source='(SELECT number FROM system.numbers LIMIT 250000)'))

    assert node.query("SELECT * FROM test_table") == '250000\n'
    assert node.query("SELECT * FROM test_table") == '250000\n'
    assert node.query("SELECT * FROM test_table") == '250000\n'

    node.query("DROP TABLE test_table")