# -*- coding: utf-8 -*-
##############################################################################
#
#    Author: Nicolas Bessi, Guewen Baconnier
#    Copyright 2012 Camptocamp SA
#
#    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.osv import orm, fields


class ResPartner(orm.Model):
    """Add a settings on the credit control policy to use on the partners,
    and links to the credit control lines."""

    _inherit = "res.partner"

    _columns = {
        'credit_policy_id': fields.many2one(
            'credit.control.policy',
            'Credit Control Policy',
            domain="[('account_ids', 'in', property_account_receivable)]",
            help=("The Credit Control Policy used for this "
                  "partner. This setting can be forced on the "
                  "invoice. If nothing is defined, it will use "
                  "the company setting.")
        ),
        'credit_control_line_ids': fields.one2many(
            'credit.control.line',
            'invoice_id',
            string='Credit Control Lines',
            readonly=True
        )
    }

    def _check_credit_policy(self, cr, uid, part_ids, context=None):
        """Ensure that policy on partner are limited to the account policy"""
        if isinstance(part_ids, (int, long)):
            part_ids = [part_ids]
        policy_obj = self.pool['credit.control.policy']
        for partner in self.browse(cr, uid, part_ids, context):
            if not partner.property_account_receivable or \
               not partner.credit_policy_id:
                return True
            account = partner.property_account_receivable
            policy_obj.check_policy_against_account(
                cr, uid,
                account.id,
                partner.credit_policy_id.id,
                context=context
            )
        return True

    _constraints = [(_check_credit_policy,
                     'The policy must be related to the receivable account',
                     ['credit_policy_id'])]

    def copy_data(self, cr, uid, id, default=None, context=None):
        """Remove credit lines when copying partner"""
        if default is None:
            default = {}
        else:
            default = default.copy()
        default['credit_control_line_ids'] = False
        return super(ResPartner, self).copy_data(
            cr, uid, id, default=default, context=context)