import os
import pytest

from helpers.cluster import ClickHouseCluster

SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__))
config_dir = os.path.join(SCRIPT_DIR, './configs')
DICTIONARY_FILES = [
    'configs/dictionaries/FileSourceConfig.xml',
    'configs/dictionaries/ExecutableSourceConfig.xml',
    'configs/dictionaries/source.csv',
    'configs/dictionaries/HTTPSourceConfig.xml',
    'configs/dictionaries/ClickHouseSourceConfig.xml'
]

cluster = ClickHouseCluster(__file__, base_configs_dir=config_dir)
instance = cluster.add_instance('node', main_configs=DICTIONARY_FILES, config_dir=config_dir)

def prepare():
    node = instance
    path = "/source.csv"

    script_dir = os.path.dirname(os.path.realpath(__file__))
    node.copy_file_to_container(os.path.join(script_dir, './http_server.py'), '/http_server.py')
    node.copy_file_to_container(os.path.join(script_dir, 'configs/dictionaries/source.csv'), './source.csv')
    node.exec_in_container([
        "bash",
        "-c",
        "python2 /http_server.py --data-path={tbl} --schema=http --host=localhost --port=5555".format(
            tbl=path)
    ], detach=True)


@pytest.fixture(scope="module")
def start_cluster():
    try:
        cluster.start()
        prepare()
        yield cluster
    finally:
        cluster.shutdown()

def test_work(start_cluster):
    query = instance.query

    assert query("SELECT dictGetString('test_file', 'first', toUInt64(1))") == "\\\'a\n"
    assert query("SELECT dictGetString('test_file', 'second', toUInt64(1))") == "\"b\n"
    assert query("SELECT dictGetString('test_executable', 'first', toUInt64(1))") == "\\\'a\n"
    assert query("SELECT dictGetString('test_executable', 'second', toUInt64(1))") == "\"b\n"

    caught_exception = ''
    try:
        instance.query("CREATE TABLE source (id UInt64, first String, second String, third String) ENGINE=TinyLog;")
        instance.query("INSERT INTO default.source VALUES (1, 'aaa', 'bbb', 'cccc'), (2, 'ddd', 'eee', 'fff')")
        instance.query("SELECT dictGetString('test_clickhouse', 'second', toUInt64(1))")
    except Exception as e:
        caught_exception = str(e)

    assert caught_exception.find("Limit for result exceeded") != -1

    assert query("SELECT dictGetString('test_http', 'first', toUInt64(1))") == "\\\'a\n"
    assert query("SELECT dictGetString('test_http', 'second', toUInt64(1))") == "\"b\n"