"""Lambda function module."""
import config
from query import query_graphql
from transform import transform
from generate import generate
from validate import validate_rdr
from lxml.etree import tostring


def handler(event, context):
    """Lambda entry point."""

    # query graphql, get dict of product metadata
    product_metadata = query_graphql()

    # transform metadata, return dict
    transformed_metadata = transform(product_metadata)

    # generate ddex using transformed metadata
    generated_ddex = generate(transformed_metadata)

    result = tostring(generated_ddex, pretty_print=True, xml_declaration=True, encoding='utf-8').decode('utf-8')
    print(result)

    # validate generated rdr
    validate_rdr(generated_ddex)