# -*- coding: utf-8 -*-
#
#   pyhwp : hwp file format parser in python
#   Copyright (C) 2010-2023 mete0r <https://github.com/mete0r>
#
#   This program is free software: you can redistribute it and/or modify
#   it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
#   You should have received a copy of the GNU Affero General Public License
#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
from __future__ import absolute_import
from __future__ import print_function
from __future__ import unicode_literals

from hwp5.binmodel.controlchar import CHID
from hwp5.dataio import Enum
from hwp5.dataio import Flags
from hwp5.dataio import UINT32
from hwp5.dataio import UINT16
from hwp5.dataio import WCHAR
from hwp5.binmodel.controls._shared import Control


class NumberingControl(Control):
    Kind = Enum(
            PAGE=0, FOOTNOTE=1, ENDNOTE=2, PICTURE=3, TABLE=4, EQUATION=5,
            UNKNOWN6=6,
    )
    Flags = Flags(UINT32,
                  0, 3, Kind, 'kind',
                  4, 11, 'footnoteshape',
                  12, 'superscript')

    def attributes(cls):
        yield cls.Flags, 'flags',
        yield UINT16, 'number',
    attributes = classmethod(attributes)


class AutoNumbering(NumberingControl):
    ''' 4.2.10.5. 자동 번호 '''
    chid = CHID.ATNO

    def attributes(cls):
        yield WCHAR, 'usersymbol',
        yield WCHAR, 'prefix',
        yield WCHAR, 'suffix',
    attributes = classmethod(attributes)

    def __unicode__(self):
        prefix = u''
        suffix = u''
        if self.flags.kind == self.Kind.FOOTNOTE:
            if self.suffix != u'\x00':
                suffix = self.suffix
        return prefix + unicode(self.number) + suffix


class NewNumbering(NumberingControl):
    ''' 4.2.10.6. 새 번호 지정 '''
    chid = CHID.NWNO