from _common import sort_by_keywords
import ymake


def get_or_default(kv, name, default):
    if name in kv:
        return kv[name][0]
    return default


def onregister_yql_python_udf(unit, *args):
    flat, kv = sort_by_keywords({'NAME': 1, 'RESOURCE_NAME': 1, 'ADD_LIBRA_MODULES': 1}, args)
    assert len(flat) == 0
    name = get_or_default(kv, 'NAME', 'CustomPython')
    resource_name = get_or_default(kv, 'RESOURCE_NAME', name)
    add_libra_modules = get_or_default(kv, 'ADD_LIBRA_MODULES', 'no') == 'yes'

    use_arcadia_python = unit.get('USE_ARCADIA_PYTHON') == 'yes'
    py3 = unit.get('PYTHON3') == 'yes'

    if unit.get('OPENSOURCE'):
        if add_libra_modules:
            ymake.report_configure_error('Libra modules are not supported in opensource python UDFs')
            add_libra_modules = False

    yql_base_dir = unit.get('YQL_BASE_DIR')
    yql_python_dir = unit.get('YQL_PYTHON_DIR')
    if not yql_python_dir:
        yql_python_dir = '/'.join([yql_base_dir, 'udfs/common/python'])

    unit.onyql_abi_version(['2', '27', '0'])
    unit.onpeerdir(['/'.join([yql_base_dir, '/udfs/common/python/python_udf'])])
    unit.onpeerdir(['/'.join([yql_base_dir, '/public/udf'])])

    if add_libra_modules:
        unit.onpeerdir(['quality/user_sessions/libra_arc/noyql'])
        unit.onpeerdir(['yql/udfs/quality/libra/module'])

    if use_arcadia_python:
        flavor = 'Arcadia'
        unit.onpeerdir(
            ['library/python/runtime', '/'.join([yql_python_dir, '/main'])]
            if not py3
            else ['library/python/runtime_py3', '/'.join([yql_base_dir, '/udfs/common/python/main_py3'])]
        )
    else:
        flavor = 'System'

    output_includes = [
        '/'.join([yql_base_dir, '/udfs/common/python/python_udf/python_udf.h']),
        '/'.join([yql_base_dir, '/public/udf/udf_registrator.h']),
    ]
    if add_libra_modules:
        output_includes.append('yql/udfs/quality/libra/module/module.h')

    path = name + '.yql_python_udf.cpp'
    libra_flag = '1' if add_libra_modules else '0'
    unit.onrun_python3(
        [
            'build/scripts/gen_yql_python_udf.py',
            flavor,
            name,
            resource_name,
            path,
            libra_flag,
            yql_base_dir,
            'OUT',
            path,
            'OUTPUT_INCLUDES',
        ]
        + output_includes
    )