# -*- coding: utf-8 -*-
# Copyright (C) 2017-2021 Team tiramisu (see AUTHORS for all contributors)
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# The original `Config` design model is unproudly borrowed from
# the rough pypy's guys: http://codespeak.net/svn/pypy/dist/pypy/config/
# the whole pypy projet is under MIT licence
# ____________________________________________________________

from ..setting import undefined, Undefined, OptionBag
from ..i18n import _
from .option import Option


class IntOption(Option):
    "represents a choice of an integer"
    __slots__ = tuple()
    _type = 'integer'
    _display_name = _('integer')

    def __init__(self,
                 *args,
                 min_number=None,
                 max_number=None,
                 **kwargs):
        extra = {}
        if min_number is not None:
            extra['min_number'] = min_number
        if max_number is not None:
            extra['max_number'] = max_number
        super().__init__(*args, extra=extra, **kwargs)

    def validate(self,
                 value: int) -> None:
        if not isinstance(value, int):
            raise ValueError()

    def second_level_validation(self,
                                value,
                                warnings_only):
        min_number = self.impl_get_extra('min_number')
        if min_number is not None and value < min_number:
            if warnings_only:
                msg = 'value should be greater than "{0}"'
            else:
                msg = 'value must be greater than "{0}"'
            raise ValueError(_(msg).format(min_number))
        max_number = self.impl_get_extra('max_number')
        if max_number is not None and value > max_number:
            if warnings_only:
                msg = 'value should be less than "{0}"'
            else:
                msg = 'value must be less than "{0}"'
            raise ValueError(_(msg).format(max_number))