"""View-layer validation helper."""

from flask import abort, request
from marshmallow import ValidationError

from royalty_common.constants.error import ERROR_MISSING_JSON_BODY


def validated_request_body(schema=None):
    """Validate the request body against the given schema."""
    body = request.get_json()
    if not body:
        abort(
            description=ERROR_MISSING_JSON_BODY,
            status=400
        )

    try:
        return schema.load(body)
    except ValidationError as e:
        abort(
            description=e.messages,
            status=400
        )