# 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.i18n import gettext
from trytond.model import fields
from trytond.pool import Pool, PoolMeta
from trytond.pyson import Eval

from .common import IncotermAvailableMixin, IncotermMixin


class Sale(IncotermAvailableMixin, metaclass=PoolMeta):
    __name__ = 'sale.sale'

    @classmethod
    def __setup__(cls):
        super().__setup__()
        cls.incoterm_location.search_context['incoterm_type'] = 'sale'

    @property
    @fields.depends('party')
    def _party_incoterms(self):
        return self.party.sale_incoterms if self.party else []

    def _get_shipment_sale(self, Shipment, key):
        pool = Pool()
        ShipmentOut = pool.get('stock.shipment.out')
        shipment = super()._get_shipment_sale(Shipment, key)
        if isinstance(shipment, ShipmentOut):
            shipment.incoterm = self.incoterm
            shipment.incoterm_location = self.incoterm_location
        return shipment

    def _get_shipment_grouping_fields(self, shipment):
        return super()._get_shipment_grouping_fields(shipment) | {
            'incoterm', 'incoterm_location'}

    @property
    @fields.depends('company', 'warehouse', 'shipment_address')
    def _incoterm_required(self):
        if self.company.incoterms:
            if (self.warehouse and self.warehouse.address
                    and self.shipment_address):
                return (
                    self.warehouse.address.country
                    != self.shipment_address.country)
        return False

    def check_for_quotation(self):
        from trytond.modules.sale.exceptions import SaleQuotationError
        super().check_for_quotation()
        if not self.incoterm and self._incoterm_required:
            for line in self.lines:
                if line.product and line.product.type in {'goods', 'assets'}:
                    raise SaleQuotationError(
                        gettext('incoterm'
                            '.msg_sale_incoterm_required_for_quotation',
                            sale=self.rec_name))


class Sale_Carrier(metaclass=PoolMeta):
    __name__ = 'sale.sale'

    @fields.depends('carrier', 'shipment_cost_method')
    def _get_incoterm_pattern(self):
        pattern = super()._get_incoterm_pattern()
        if self.carrier:
            pattern['mode'] = self.carrier.mode
            pattern['carrier'] = (
                'seller' if self.shipment_cost_method else 'buyer')
        return pattern

    @fields.depends(methods=['_set_default_incoterm'])
    def on_change_carrier(self):
        try:
            super_on_change = super().on_change_carrier
        except AttributeError:
            pass
        else:
            super_on_change()
        self._set_default_incoterm()

    @fields.depends(methods=['_set_default_incoterm'])
    def on_change_shipment_cost_method(self):
        try:
            super_on_change = super().on_change_shipment_cost_method
        except AttributeError:
            pass
        else:
            super_on_change()
        self._set_default_incoterm()


class Opportunity(IncotermMixin, metaclass=PoolMeta):
    __name__ = 'sale.opportunity'

    @classmethod
    def __setup__(cls):
        super().__setup__()
        cls.incoterm_location.search_context['incoterm_type'] = 'sale'

    @classmethod
    def _incoterm_readonly_state(cls):
        return ~Eval('state').in_(['lead', 'opportunity'])

    def _get_sale_opportunity(self):
        sale = super()._get_sale_opportunity()
        sale.incoterm = self.incoterm
        sale.incoterm_location = self.incoterm_location
        return sale