# 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.model import ModelView, ModelSQL, fields
from trytond.pyson import Eval

from trytond.exceptions import UserError

class Sale(metaclass=PoolMeta):
    'Sale Analytic Operation'
    __name__ = 'sale.sale'

    account_analytic = fields.Many2One('analytic_account.account',
                                       'Analytic Account',
                                       domain=[
                                           ('type', '=', 'normal'),
                                       ])
class SaleLine(metaclass=PoolMeta):
    'Sale Line Analytic Operation'
    __name__ =  'sale.line'



    @fields.depends('product', 'unit', 'sale',
                    '_parent_sale.party', '_parent_sale.invoice_party',
                    '_parent_sale.account_analytic', 'analytic_accounts',
                    methods=['compute_taxes', 'compute_unit_price',
                             'on_change_with_amount'])
    def on_change_product(self):
        if not self.product:
            return
        
        party = None
        if self.sale:
            party = self.sale.invoice_party or self.sale.party

        # Set taxes before unit_price to have taxes in context of sale price
        self.taxes = self.compute_taxes(party)

        category = self.product.sale_uom.category
        if not self.unit or self.unit.category != category:
            self.unit = self.product.sale_uom

        self.unit_price = self.compute_unit_price()


        self.type = 'line'
        self.amount = self.on_change_with_amount()
        
        self.analytic_accounts = tuple()
        try:
            self.analytic_accounts += ({'root': self.sale.account_analytic.root,
                                        'account': self.sale.account_analytic},) 
        except:
            pass