# 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 PoolMeta
from trytond.model import fields
from trytond.pyson import Eval
from trytond.model.exceptions import ValidationError


class Invoice(metaclass=PoolMeta):
    'Account Invoice'
    __name__ = 'account.invoice'

    _states = {
        'readonly': Eval('state') != 'draft',
    }

    account_analytic = fields.Many2One(
        'analytic_account.account', 'Analytic Account',
        domain=[('type', '=', 'normal')],
        states=_states)


class InvoiceLine(metaclass=PoolMeta):
    'Invoice Line'
    __name__ = 'account.invoice.line'

    @fields.depends(
        'product', 'unit', '_parent_invoice.type', 'analytic_accounts',
        '_parent_invoice.party', 'party', 'invoice', 'invoice_type',
        '_parent_invoice.account_analytic', '_parent_invoice.invoice_date',
        '_parent_invoice.accounting_date', 'company',
        methods=['_get_tax_rule_pattern'])
    def on_change_product(self):
        super(InvoiceLine, self).on_change_product()
        self.analytic_accounts = tuple()
        try:
            if self.invoice and self.invoice.account_analytic:
                self.analytic_accounts += (
                    {'root': self.invoice.account_analytic.root,
                     'account': self.invoice.account_analytic},)
        except Exception as e:
            raise ValidationError(f"Se produjo un error: {e}")