import os
import sys
import time

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=[])


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))

config = '''<clickhouse>
    <user_defined_executable_functions_config>/etc/clickhouse-server/functions/test_function_config.xml</user_defined_executable_functions_config>
</clickhouse>'''

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

        node.replace_config("/etc/clickhouse-server/config.d/executable_user_defined_functions_config.xml", config)

        copy_file_to_container(os.path.join(SCRIPT_DIR, 'functions/.'), '/etc/clickhouse-server/functions', node.docker_id)
        copy_file_to_container(os.path.join(SCRIPT_DIR, 'user_scripts/.'), '/var/lib/clickhouse/user_scripts', node.docker_id)

        node.restart_clickhouse()

        yield cluster

    finally:
        cluster.shutdown()

def test_executable_function_bash(started_cluster):
    skip_test_msan(node)
    assert node.query("SELECT test_function_bash(toUInt64(1))") == 'Key 1\n'
    assert node.query("SELECT test_function_bash(1)") == 'Key 1\n'

    assert node.query("SELECT test_function_pool_bash(toUInt64(1))") == 'Key 1\n'
    assert node.query("SELECT test_function_pool_bash(1)") == 'Key 1\n'

def test_executable_function_python(started_cluster):
    skip_test_msan(node)
    assert node.query("SELECT test_function_python(toUInt64(1))") == 'Key 1\n'
    assert node.query("SELECT test_function_python(1)") == 'Key 1\n'

    assert node.query("SELECT test_function_pool_python(toUInt64(1))") == 'Key 1\n'
    assert node.query("SELECT test_function_pool_python(1)") == 'Key 1\n'

def test_executable_function_send_chunk_header_python(started_cluster):
    skip_test_msan(node)
    assert node.query("SELECT test_function_send_chunk_header_python(toUInt64(1))") == 'Key 1\n'
    assert node.query("SELECT test_function_send_chunk_header_python(1)") == 'Key 1\n'

    assert node.query("SELECT test_function_send_chunk_header_pool_python(toUInt64(1))") == 'Key 1\n'
    assert node.query("SELECT test_function_send_chunk_header_pool_python(1)") == 'Key 1\n'

def test_executable_function_sum_python(started_cluster):
    skip_test_msan(node)
    assert node.query("SELECT test_function_sum_python(toUInt64(1), toUInt64(1))") == '2\n'
    assert node.query("SELECT test_function_sum_python(1, 1)") == '2\n'

    assert node.query("SELECT test_function_sum_pool_python(toUInt64(1), toUInt64(1))") == '2\n'
    assert node.query("SELECT test_function_sum_pool_python(1, 1)") == '2\n'

def test_executable_function_argument_python(started_cluster):
    skip_test_msan(node)
    assert node.query("SELECT test_function_argument_python(toUInt64(1))") == 'Key 1 1\n'
    assert node.query("SELECT test_function_argument_python(1)") == 'Key 1 1\n'

    assert node.query("SELECT test_function_argument_pool_python(toUInt64(1))") == 'Key 1 1\n'
    assert node.query("SELECT test_function_argument_pool_python(1)") == 'Key 1 1\n'

def test_executable_function_signalled_python(started_cluster):
    skip_test_msan(node)
    assert node.query_and_get_error("SELECT test_function_signalled_python(toUInt64(1))")
    assert node.query_and_get_error("SELECT test_function_signalled_python(1)")

    assert node.query_and_get_error("SELECT test_function_signalled_pool_python(toUInt64(1))")
    assert node.query_and_get_error("SELECT test_function_signalled_pool_python(1)")

def test_executable_function_slow_python(started_cluster):
    skip_test_msan(node)
    assert node.query_and_get_error("SELECT test_function_slow_python(toUInt64(1))")
    assert node.query_and_get_error("SELECT test_function_slow_python(1)")

    assert node.query_and_get_error("SELECT test_function_slow_pool_python(toUInt64(1))")
    assert node.query_and_get_error("SELECT test_function_slow_pool_python(1)")

def test_executable_function_non_direct_bash(started_cluster):
    skip_test_msan(node)
    assert node.query("SELECT test_function_non_direct_bash(toUInt64(1))") == 'Key 1\n'
    assert node.query("SELECT test_function_non_direct_bash(1)") == 'Key 1\n'

    assert node.query("SELECT test_function_non_direct_pool_bash(toUInt64(1))") == 'Key 1\n'
    assert node.query("SELECT test_function_non_direct_pool_bash(1)") == 'Key 1\n'

def test_executable_function_sum_json_python(started_cluster):
    skip_test_msan(node)

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

    assert node.query("SELECT test_function_sum_json_unnamed_args_python(1, 2);") == '3\n'
    assert node.query("SELECT test_function_sum_json_unnamed_args_python(lhs, rhs) FROM test_table;") == '0\n2\n4\n'

    assert node.query("SELECT test_function_sum_json_partially_named_args_python(1, 2);") == '3\n'
    assert node.query("SELECT test_function_sum_json_partially_named_args_python(lhs, rhs) FROM test_table;") == '0\n2\n4\n'

    assert node.query("SELECT test_function_sum_json_named_args_python(1, 2);") == '3\n'
    assert node.query("SELECT test_function_sum_json_named_args_python(lhs, rhs) FROM test_table;") == '0\n2\n4\n'

    assert node.query("SELECT test_function_sum_json_unnamed_args_pool_python(1, 2);") == '3\n'
    assert node.query("SELECT test_function_sum_json_unnamed_args_pool_python(lhs, rhs) FROM test_table;") == '0\n2\n4\n'

    assert node.query("SELECT test_function_sum_json_partially_named_args_python(1, 2);") == '3\n'
    assert node.query("SELECT test_function_sum_json_partially_named_args_python(lhs, rhs) FROM test_table;") == '0\n2\n4\n'

    assert node.query("SELECT test_function_sum_json_named_args_pool_python(1, 2);") == '3\n'
    assert node.query("SELECT test_function_sum_json_named_args_pool_python(lhs, rhs) FROM test_table;") == '0\n2\n4\n'

    node.query("DROP TABLE test_table;")