# -*- coding: utf-8 -*-
##############################################################################
#
#    datenpol gmbh
#    Copyright (C) 2013-TODAY datenpol gmbh (<http://www.datenpol.at/>)
#
#    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 odoo import models, fields, api, _
from odoo.exceptions import ValidationError


class Attachment(models.Model):
    _inherit = 'ir.attachment'

    from_designbox = fields.Boolean(string='Import von Designbox', readonly=True)

    @api.multi
    def write(self, vals):
        for record in self:
            if record.from_designbox:
                raise ValidationError(
                    _("Dokumente, die aus der Designbox importiert wurden, können nicht gelöscht werden."))

        return super(Attachment, self).write(vals)

    @api.multi
    def unlink(self):
        for record in self:
            if record.from_designbox:
                raise ValidationError(
                    _("Dokumente, die aus der Designbox importiert wurden, können nicht gelöscht werden."))

        return super(Attachment, self).unlink()