from odoo import models, _


class AccountMove(models.Model):
    _inherit = 'account.move'

    def reflect_cancelled_sol(self, isCancelled):
        if self.env.user.has_group('point_of_sale.group_pos_user'):
            for invoice in self:
                for pos_order_line in invoice.pos_order_ids.mapped('lines'):
                    if pos_order_line.sale_order_line_id:
                        if isCancelled and "(Cancelled)" not in pos_order_line.sale_order_line_id.name:
                            name = _("%(old_name)s (Cancelled)", old_name=pos_order_line.sale_order_line_id.name)
                            pos_order_line.sale_order_line_id.name = name
                        elif not isCancelled and "(Cancelled)" in pos_order_line.sale_order_line_id.name:
                            pos_order_line.sale_order_line_id.name = pos_order_line.sale_order_line_id.name.replace(" (Cancelled)", "")

    def button_cancel(self):
        res = super().button_cancel()
        self.reflect_cancelled_sol(True)
        return res

    def action_post(self):
        res = super().action_post()
        self.reflect_cancelled_sol(False)
        return res

    def _is_downpayment(self):
        # EXTENDS sale
        self.ensure_one()
        if self.line_ids.sale_line_ids:
            return super()._is_downpayment()

        base_lines, _ = self._get_rounded_base_and_tax_lines()
        return base_lines and all('down_payment' in (line['computation_key'] or '').split(',') for line in base_lines)