"""Custom validations for use in Marshmallow schemas."""

import re

from marshmallow import ValidationError, validate

from abacus_common_logic.constants import error
from abacus_common_logic.constants.constants import DECIMAL_PATTERN

not_blank = validate.Length(min=1, error=error.ERROR_FIELD_MISSING)


def check_decimal_precision(param):
    """Check the input is a float with no more than 2 decimal places of precision.

    :param param: a float
    :return: True if the float has no more than 2 digits after the decimal
    point, raises a ValidationError otherwise.
    """
    if DECIMAL_PATTERN.match(str(param)):
        return True
    else:
        raise ValidationError(error.ERROR_INVALID_DECIMAL)


def check_file_path(param):
    """Check the input is a valid file path.

    :param param: a string
    :return: True if the string is a valid file path, raises a ValidationError
    otherwise.
    """
    if re.fullmatch(r'.*\:\/\/[A-z0-9-_\/]+\.[A-z]+', param):
        return True
    raise ValidationError(error.ERROR_INVALID_FILE_PATH)