text: # -*- coding: utf-8 -*-
  # Part of Odoo. See LICENSE file for full copyright and licensing details.
  
  from odoo import exceptions
  from odoo.addons.sale.controllers.portal import CustomerPortal
  from odoo.http import request, route
  from odoo.tools import consteq
  
  
  class SaleStockPortal(CustomerPortal):
  
      def _stock_picking_check_access(self, picking_id, access_token=None):
          picking = request.env['stock.picking'].browse([picking_id])
          picking_sudo = picking.sudo()
          try:
              picking.check_access_rights('read')
              picking.check_access_rule('read')
          except exceptions.AccessError:
              if not access_token or not consteq(picking_sudo.sale_id.access_token, access_token):
                  raise
          return picking_sudo
  
      @route(['/my/picking/pdf/<int:picking_id>'], type='http', auth="public", website=True)
      def portal_my_picking_report(self, picking_id, access_token=None, **kw):
          """ Print delivery slip for customer, using either access rights or access token
          to be sure customer has access """
          try:
              picking_sudo = self._stock_picking_check_access(picking_id, access_token=access_token)
          except exceptions.AccessError:
              return request.redirect('/my')
  
          # print report as sudo, since it require access to product, taxes, payment term etc.. and portal does not have those access rights.
          pdf = request.env.ref('stock.action_report_delivery').sudo().render_qweb_pdf([picking_sudo.id])[0]
          pdfhttpheaders = [
              ('Content-Type', 'application/pdf'),
              ('Content-Length', len(pdf)),
          ]
          return request.make_response(pdf, headers=pdfhttpheaders)
  