"""Lambda product-participations-check function module."""

from lambdacommon.common_config import logger
from src.logic.check_ddex_generation import check_ddex_generation
from src.logic.check_ddex_generation import DDEX_ERROR
from src.logic.check_ddex_generation import DDEX_UNKNOWN


class DDEXCheckException(Exception):
    """DDEXCheckException class."""

    pass


class DDEXCheckUnknown(Exception):
    """DDEXCheckUnkown retriable class."""

    pass


def handler(event, context):
    """Lambda entry point."""
    try:
        upc = event['upc']
        ddex_result, ddex_info = check_ddex_generation(upc)
        if ddex_result == DDEX_ERROR:
            logger.error(f'{ddex_result} for UPC {upc}, with error: {ddex_info}')
            raise DDEXCheckException(f'DDEX Check failed: {ddex_info}')
        if ddex_result == DDEX_UNKNOWN:
            logger.warning('DDEX response was empty or unknown and it should be retried.')
            raise DDEXCheckUnknown(f'Unknown or empty DDEX response. {ddex_info}')
        logger.info(f'DDEX Check for UPC: {upc} finished with {ddex_result}: {ddex_info}')
        return {
            'status': 'OK',
            'DDEX_CHECK_RESULT': ddex_result,
            'DDEX_CHECK_INFO': ddex_info
        }
    except Exception as e:
        logger.exception(str(e))
        raise e