[IMP] sale_stock: schedule activity on picking on change of so shipping address

purpose of this commit is to schedule an activity exception on delivery picking
when user change address of the SO, to notify user that
sales order address is changed.

Task-1888829

closes odoo/odoo#28191

Signed-off-by: Simon Lejeune (sle) <sle@openerp.com>

addons/sale_stock/models/sale_order.py

@@ -61,6 +61,17 @@ class SaleOrder(models.Model):
         if values.get('order_line') and self.state == 'sale':
             for order in self:
                 pre_order_line_qty = {order_line: order_line.product_uom_qty for order_line in order.mapped('order_line') if not order_line.is_expense}
+
+        if values.get('partner_shipping_id'):
+            new_partner = self.env['res.partner'].browse(values.get('partner_shipping_id'))
+            for record in self:
+                picking = record.mapped('picking_ids').filtered(lambda x: x.state not in ('done', 'cancel'))
+                addresses = (record.partner_shipping_id.display_name, new_partner.display_name)
+                message = _("""The delivery address has been changed on the Sales Order<br/>
+                        From <strong>"%s"</strong> To <strong>"%s"</strong>,
+                        You should probably update the partner on this document.""") % addresses
+                picking.activity_schedule('mail.mail_activity_data_warning', note=message, user_id=self.env.user.id)
+
         res = super(SaleOrder, self).write(values)
         if values.get('order_line') and self.state == 'sale':
             for order in self: