"""Json schema to validate PUT workstation product schedule request."""

from datetime import datetime

from jsonschema import FormatChecker

from timed_release.constants import field_const, timed_release_ws


@FormatChecker.cls_checks('utc-date-time')
def is_utc_datetime_format(value):
    """Validate if the datetime string format is UTC."""
    try:
        datetime.strptime(value, timed_release_ws.UTC_DATETIME_FOTMAT)
        return True
    except ValueError:
        return False


schema = {
    '$schema': 'http://json-schema.org/draft-04/schema#',
    'title': 'Validation schema of PUT workstation product schedule request',
    'type': 'object',
    'properties': {
        field_const.SALES_DATE_TIME: {
            'type': 'string',
            'format': 'utc-date-time'
        },
        'user_timezone': {
            'type': 'string'
        }
    },
    'required': [field_const.SALES_DATE_TIME],
    'additionalProperties': False
}