# -*- coding: utf-8 -*-
from odoo import api, fields, models
from odoo.tools import float_is_zero

class PosOrder(models.Model):
    _inherit = 'pos.order'

    @api.model
    def _get_invoice_lines_values(self, line_values, pos_line, move_type):
        res = super()._get_invoice_lines_values(line_values, pos_line, move_type)
        if pos_line.product_id.type == 'combo':
            is_refund_order = bool(
                pos_line.order_id.is_refund
                or pos_line.order_id.amount_total < 0.0
            )
            qty_sign = -1 if (
                (move_type == 'out_invoice' and is_refund_order)
                or (move_type == 'out_refund' and not is_refund_order)
            ) else 1
            res.update({
                'display_type': False,
                'product_id': line_values['product_id'].id,
                'quantity': qty_sign * line_values['quantity'],
                'discount': line_values['discount'],
                'price_unit': line_values['price_unit'],
                'name': line_values['name'],
                'tax_ids': [(6, 0, line_values['tax_ids'].ids)],
                'product_uom_id': line_values['uom_id'].id,
                'extra_tax_data': self.env['account.tax']._export_base_line_extra_tax_data(line_values),
            })
        return res

class PosOrderLine(models.Model):
    _inherit = 'pos.order.line'

    @api.depends('price_subtotal', 'total_cost')
    def _compute_margin(self):
        super()._compute_margin()
        for line in self:
            if line.product_id.type == 'combo':
                sign = -1 if line.order_id.is_refund else 1
                line.margin = (line.price_subtotal * sign) - line.total_cost
                line.margin_percent = not float_is_zero(line.price_subtotal, precision_rounding=line.currency_id.rounding) \
                                         and line.margin / (line.price_subtotal * sign) \
                                         or 0