# -*- coding: utf-8 -*-
###############################################################################
#
#  Cybrosys Technologies Pvt. Ltd.
#
#  Copyright (C) 2024-TODAY Cybrosys Technologies(<https://www.cybrosys.com>)
#  Author: Ranjith R (odoo@cybrosys.com)
#
#  You can modify it under the terms of the GNU LESSER
#  GENERAL PUBLIC LICENSE (LGPL v3), Version 3.
#
#  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 (LGPL v3) for more details.
#
#  You should have received a copy of the GNU LESSER GENERAL PUBLIC LICENSE
#  (LGPL v3) along with this program.
#  If not, see <http://www.gnu.org/licenses/>.
#
###############################################################################
from odoo import api, fields, models


class PurchaseOrder(models.Model):
    """ This class is inherited to add delivery status in purchase orders. """
    _inherit = 'purchase.order'

    delivery_status = fields.Selection(selection=[
        ('nothing', 'Nothing to Receive'), ('to_receive', 'To Receive'),
        ('partial', 'Partially Received'), ('received', 'Received')],
        string='Delivery Status',
        compute='_compute_delivery_status', store=True,
        help="Status of delivery of purchase order.")

    @api.depends('state', 'order_line.qty_received')
    def _compute_delivery_status(self):
        """ Compute the delivery status for a record. """
        for rec in self:
            pickings = self.env['stock.picking'].search([
                ('purchase_id', '=', rec.id)])
            orderlines = rec.mapped('order_line')
            if not pickings and not orderlines.filtered(
                    lambda x: x.product_id.type == 'service'):
                rec.delivery_status = 'nothing'
            elif all(o.qty_received == 0 for o in orderlines):
                rec.delivery_status = 'to_receive'
            elif orderlines.filtered(lambda x: x.qty_received < x.product_qty):
                rec.delivery_status = 'partial'
            elif all(o.qty_received == o.product_qty for o in orderlines):
                rec.delivery_status = 'received'