I got this function in python :

def picking_lot_scanned(self, barcode):
        self.ensure_one()

        picking_id = self.env['stock.picking'].browse(self.id)
        if picking_id.state in ['draft']:
            lot_id = self.env['stock.production.lot'].search([('name','=',str(barcode))], limit=1)

            if not lot_id:
                raise ValidationError("Le lot/numéro de série {} n'existe pas.".format(barcode))

            if lot_id:
                product_id = lot_id.product_id

                action = self.env.ref('elosys_picking_lot_scanner.action_lot_scanned_qty_wizard').read()[0]
                action['context'] = {
                    'default_picking_id': picking_id.id,
                    'default_product_id': product_id.id,
                }
                return action
        return False

it returns an action of wizard view ,now i want to call this action in a js function , i tried doing this :

odoo.define('ndjma_picking_camera.Nedjma', function(require) {
    "use strict";
$(document).ready(function(){
    let selectedDeviceId;
    var rpc = require('web.rpc');
    var core = require('web.core');
    
    function decodeOnce(codeReader, selectedDeviceId) {
        
        var self = this;

        codeReader.decodeFromInputVideoDevice(selectedDeviceId, 'video').then((result) => {
            
            var url = window.location.href;
            url = url.match(new RegExp('id=' + "(.*)" + '&'));
            url = String(url);
            var start_pos = url.indexOf('=') + 1;
            var end_pos = url.indexOf('&', start_pos);
            var id = url.substring(start_pos, end_pos);

            $('input[name="sh_invoice_barcode_mobile"]').val(result.text);
            $('input[name="sh_invoice_barcode_mobile"]').change();

            var barcode = result.text;
            alert(result.text);

            var res = rpc.query({
                model: 'stock.picking',
                method: 'picking_lot_scanned',
                args: [parseInt(id), barcode],
            }).then(function(result) {
                    if (result) {
                        self.do_action(result, {
                            on_close: function () {
                                self.trigger_up('reload');
                            }
                        });
                    }
                });

.......

and i keep getting error self in undefined ,i can't find another solution to this problem Any idea of what could be the problem!