from trytond.pool import PoolMeta
from trytond.model import fields
from trytond.transaction import Transaction
from trytond.pyson import Eval
from trytond.i18n import gettext
from trytond.exceptions import UserError
from trytond.pyson import If


class Location(metaclass=PoolMeta):
    __name__ = 'stock.location'

    company = fields.Many2One('company.company', 'Company',
        domain=[
            ('id', If(Eval('context', {}).contains('company'), '=', '!='),
                Eval('context', {}).get('company', -1)),
            ])

    @classmethod
    def __setup__(cls):
        super().__setup__()
        cls.parent.domain = [('company', '=', Eval('company'))]
        cls.parent.depends = ['company']

    @classmethod
    def default_company(cls):
        return Transaction().context.get('company') or None

    @classmethod
    def validate(cls, locations):
        super().validate(locations)
        for location in locations:
            location.check_company()

    def check_company(self):
        if (self.company is not None and
                self.company.id != Transaction().context.get('company')):
            raise UserError(gettext(
                    'stock_location_company.msg_wrong_company',
                    location=self.rec_name))
        for child in self.childs:
            if child.company != self.company:
                raise UserError(gettext(
                    'stock_location_company.msg_wrong_company',
                    location=self.rec_name))