import pymongo

import pytest
from helpers.client import QueryRuntimeException

from helpers.cluster import ClickHouseCluster


@pytest.fixture(scope="module")
def started_cluster(request):
    try:
        cluster = ClickHouseCluster(__file__)
        node = cluster.add_instance('node',
                                    main_configs=["configs_secure/config.d/ssl_conf.xml", "configs/named_collections.xml"],
                                    with_mongo=True,
                                    with_mongo_secure=request.param)
        cluster.start()
        yield cluster
    finally:
        cluster.shutdown()


def get_mongo_connection(started_cluster, secure=False, with_credentials=True):
    connection_str = ''
    if with_credentials:
        connection_str = 'mongodb://root:clickhouse@localhost:{}'.format(started_cluster.mongo_port)
    else:
        connection_str = 'mongodb://localhost:27018'
    if secure:
        connection_str += '/?tls=true&tlsAllowInvalidCertificates=true'
    return pymongo.MongoClient(connection_str)


@pytest.mark.parametrize('started_cluster', [False], indirect=['started_cluster'])
def test_simple_select(started_cluster):
    mongo_connection = get_mongo_connection(started_cluster)
    db = mongo_connection['test']
    db.add_user('root', 'clickhouse')
    simple_mongo_table = db['simple_table']
    data = []
    for i in range(0, 100):
        data.append({'key': i, 'data': hex(i * i)})
    simple_mongo_table.insert_many(data)

    node = started_cluster.instances['node']
    node.query(
        "CREATE TABLE simple_mongo_table(key UInt64, data String) ENGINE = MongoDB('mongo1:27017', 'test', 'simple_table', 'root', 'clickhouse')")

    assert node.query("SELECT COUNT() FROM simple_mongo_table") == '100\n'
    assert node.query("SELECT sum(key) FROM simple_mongo_table") == str(sum(range(0, 100))) + '\n'

    assert node.query("SELECT data from simple_mongo_table where key = 42") == hex(42 * 42) + '\n'
    node.query("DROP TABLE simple_mongo_table")
    simple_mongo_table.drop()


@pytest.mark.parametrize('started_cluster', [False], indirect=['started_cluster'])
def test_complex_data_type(started_cluster):
    mongo_connection = get_mongo_connection(started_cluster)
    db = mongo_connection['test']
    db.add_user('root', 'clickhouse')
    incomplete_mongo_table = db['complex_table']
    data = []
    for i in range(0, 100):
        data.append({'key': i, 'data': hex(i * i), 'dict': {'a': i, 'b': str(i)}})
    incomplete_mongo_table.insert_many(data)

    node = started_cluster.instances['node']
    node.query(
        "CREATE TABLE incomplete_mongo_table(key UInt64, data String) ENGINE = MongoDB('mongo1:27017', 'test', 'complex_table', 'root', 'clickhouse')")

    assert node.query("SELECT COUNT() FROM incomplete_mongo_table") == '100\n'
    assert node.query("SELECT sum(key) FROM incomplete_mongo_table") == str(sum(range(0, 100))) + '\n'

    assert node.query("SELECT data from incomplete_mongo_table where key = 42") == hex(42 * 42) + '\n'
    node.query("DROP TABLE incomplete_mongo_table")
    incomplete_mongo_table.drop()


@pytest.mark.parametrize('started_cluster', [False], indirect=['started_cluster'])
def test_incorrect_data_type(started_cluster):
    mongo_connection = get_mongo_connection(started_cluster)
    db = mongo_connection['test']
    db.add_user('root', 'clickhouse')
    strange_mongo_table = db['strange_table']
    data = []
    for i in range(0, 100):
        data.append({'key': i, 'data': hex(i * i), 'aaaa': 'Hello'})
    strange_mongo_table.insert_many(data)

    node = started_cluster.instances['node']
    node.query(
        "CREATE TABLE strange_mongo_table(key String, data String) ENGINE = MongoDB('mongo1:27017', 'test', 'strange_table', 'root', 'clickhouse')")

    with pytest.raises(QueryRuntimeException):
        node.query("SELECT COUNT() FROM strange_mongo_table")

    with pytest.raises(QueryRuntimeException):
        node.query("SELECT uniq(key) FROM strange_mongo_table")

    node.query(
        "CREATE TABLE strange_mongo_table2(key UInt64, data String, bbbb String) ENGINE = MongoDB('mongo1:27017', 'test', 'strange_table', 'root', 'clickhouse')")

    with pytest.raises(QueryRuntimeException):
        node.query("SELECT bbbb FROM strange_mongo_table2")
    node.query("DROP TABLE strange_mongo_table")
    node.query("DROP TABLE strange_mongo_table2")
    strange_mongo_table.drop()

@pytest.mark.parametrize('started_cluster', [True], indirect=['started_cluster'])
def test_secure_connection(started_cluster):
    mongo_connection = get_mongo_connection(started_cluster, secure=True)
    db = mongo_connection['test']
    db.add_user('root', 'clickhouse')
    simple_mongo_table = db['simple_table']
    data = []
    for i in range(0, 100):
        data.append({'key': i, 'data': hex(i * i)})
    simple_mongo_table.insert_many(data)

    node = started_cluster.instances['node']
    node.query(
        "CREATE TABLE simple_mongo_table(key UInt64, data String) ENGINE = MongoDB('mongo1:27017', 'test', 'simple_table', 'root', 'clickhouse', 'ssl=true')")

    assert node.query("SELECT COUNT() FROM simple_mongo_table") == '100\n'
    assert node.query("SELECT sum(key) FROM simple_mongo_table") == str(sum(range(0, 100))) + '\n'

    assert node.query("SELECT data from simple_mongo_table where key = 42") == hex(42 * 42) + '\n'
    node.query("DROP TABLE simple_mongo_table")
    simple_mongo_table.drop()

@pytest.mark.parametrize('started_cluster', [False], indirect=['started_cluster'])
def test_predefined_connection_configuration(started_cluster):
    mongo_connection = get_mongo_connection(started_cluster)
    db = mongo_connection['test']
    db.add_user('root', 'clickhouse')
    simple_mongo_table = db['simple_table']
    data = []
    for i in range(0, 100):
        data.append({'key': i, 'data': hex(i * i)})
    simple_mongo_table.insert_many(data)

    node = started_cluster.instances['node']
    node.query("create table simple_mongo_table(key UInt64, data String) engine = MongoDB(mongo1)")
    assert node.query("SELECT count() FROM simple_mongo_table") == '100\n'
    simple_mongo_table.drop()

@pytest.mark.parametrize('started_cluster', [False], indirect=['started_cluster'])
def test_no_credentials(started_cluster):
    mongo_connection = get_mongo_connection(started_cluster, with_credentials=False)
    db = mongo_connection['test']
    simple_mongo_table = db['simple_table']
    data = []
    for i in range(0, 100):
        data.append({'key': i, 'data': hex(i * i)})
    simple_mongo_table.insert_many(data)

    node = started_cluster.instances['node']
    node.query("create table simple_mongo_table_2(key UInt64, data String) engine = MongoDB('mongo2:27017', 'test', 'simple_table', '', '')")
    assert node.query("SELECT count() FROM simple_mongo_table_2") == '100\n'
    simple_mongo_table.drop()

@pytest.mark.parametrize('started_cluster', [False], indirect=['started_cluster'])
def test_auth_source(started_cluster):
    mongo_connection = get_mongo_connection(started_cluster, with_credentials=False)
    admin_db = mongo_connection['admin']
    admin_db.add_user('root', 'clickhouse', roles=[{ 'role': "userAdminAnyDatabase", 'db': "admin" }, "readWriteAnyDatabase"])
    simple_mongo_table = admin_db['simple_table']
    data = []
    for i in range(0, 50):
        data.append({'key': i, 'data': hex(i * i)})
    simple_mongo_table.insert_many(data)
    db = mongo_connection['test']
    simple_mongo_table = db['simple_table']
    data = []
    for i in range(0, 100):
        data.append({'key': i, 'data': hex(i * i)})
    simple_mongo_table.insert_many(data)

    node = started_cluster.instances['node']
    node.query("create table simple_mongo_table_fail(key UInt64, data String) engine = MongoDB('mongo2:27017', 'test', 'simple_table', 'root', 'clickhouse')")
    node.query_and_get_error("SELECT count() FROM simple_mongo_table_fail")
    node.query("create table simple_mongo_table_ok(key UInt64, data String) engine = MongoDB('mongo2:27017', 'test', 'simple_table', 'root', 'clickhouse', 'authSource=admin')")
    assert node.query("SELECT count() FROM simple_mongo_table_ok") == '100\n'
    simple_mongo_table.drop()