# This file is part of Tryton.  The COPYRIGHT file at the top level of
# this repository contains the full copyright notices and license terms.
from trytond.pool import Pool, PoolMeta
from trytond.tools import grouped_slice


class Product(metaclass=PoolMeta):
    __name__ = 'product.product'

    @classmethod
    def recompute_cost_price(cls, products, start=None):
        pool = Pool()
        Move = pool.get('stock.move')
        Shipment = pool.get('stock.shipment.drop')
        shipments = set()
        for sub_products in grouped_slice(products):
            domain = [
                ('unit_price_updated', '=', True),
                cls._domain_moves_cost(),
                ('product', 'in', [p.id for p in sub_products]),
                ('shipment', 'like', 'stock.shipment.drop,%'),
                ]
            if start:
                domain.append(('effective_date', '>=', start))
            for move in Move.search(domain, order=[]):
                shipments.add(move.shipment)
        shipments = Shipment.browse(list(shipments))
        Shipment.set_cost(shipments)
        super().recompute_cost_price(products, start=start)