# -*- encoding: utf-8 -*-
##############################################################################
#
#    OpenERP, Open Source Management Solution
#    This module copyright (C) 2015 Savoir-faire Linux
#    (<http://www.savoirfairelinux.com>).
#
#    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 openerp import models, fields, api, _
from openerp.exceptions import Warning


class StockLocation(models.Model):
    _inherit = 'stock.location'

    main_partner_location = fields.Boolean(
        'Main Partner Location',
        help="The root location for a partner's location for a specific "
        "type.")

    @api.one
    @api.constrains('partner_id', 'main_partner_location', 'usage')
    def _check_main_location(self):
        partner = self.partner_id

        if partner and len(partner.get_main_location(self.usage)) > 1:
            raise Warning(
                _('The partner %s already has a main location '
                    'of type %s.') % (partner.name, self.usage))

    @api.onchange('partner_id', 'usage')
    def _onchange_parent_location(self):
        if self.partner_id:
            self.location_id = self.partner_id.get_main_location(self.usage).id