[IMP] website_sale: add warning when editing billing and shipping address

In case you edit your shipping address (that is the same for billing) you don't always
undersantad that you are editing at the same time the billing address.

opw-1914185

closes odoo/odoo#29484

addons/website_sale/i18n/website_sale.pot

@@ -508,6 +508,11 @@ msgstr ""
 msgid "Bank Name"
 msgstr ""
 
+#. module: website_sale
+#: model_terms:ir.ui.view,arch_db:website_sale.address
+msgid "Be aware!"
+msgstr ""
+
 #. module: website_sale
 #: model:res.country.group,name:website_sale.benelux
 msgid "BeNeLux"
@@ -2377,6 +2382,12 @@ msgstr ""
 msgid "With the first mode you can set several prices in the product config form (from Sales tab). With the second one, you set prices and computation rules from Pricelists."
 msgstr ""
 
+#. module: website_sale
+#: model_terms:ir.ui.view,arch_db:website_sale.address
+msgid "You are editing your <b>billing and shipping</b> addresses at the same time!<br/>\n"
+"                                            If you want to modify your shipping address, create a"
+msgstr ""
+
 #. module: website_sale
 #: model_terms:ir.actions.act_window,help:website_sale.sale_report_action_carts
 #: model_terms:ir.actions.act_window,help:website_sale.sale_report_action_dashboard
@@ -2507,6 +2518,11 @@ msgstr ""
 msgid "ml-2"
 msgstr ""
 
+#. module: website_sale
+#: model_terms:ir.ui.view,arch_db:website_sale.address
+msgid "new address"
+msgstr ""
+
 #. module: website_sale
 #: model_terms:ir.ui.view,arch_db:website_sale.products
 msgid "o_website_sale_search"

addons/website_sale/views/templates.xml

@@ -1122,6 +1122,15 @@
                                 <t t-if="mode[1] == 'shipping'">
                                     <h2 class="o_page_header mt8">Shipping Address </h2>
                                 </t>
+                                <t t-if="partner_id == website_sale_order.partner_shipping_id.id == website_sale_order.partner_invoice_id.id">
+                                    <div class="alert alert-warning" role="alert">
+                                        <h4 class="alert-heading">Be aware!</h4>
+                                        <p>
+                                            You are editing your <b>billing and shipping</b> addresses at the same time!<br/>
+                                            If you want to modify your shipping address, create a <a href='/shop/address'>new address</a>.
+                                        </p>
+                                    </div>
+                                </t>
                                 <t t-if="error" t-foreach="error.get('error_message', [])" t-as="err">
                                     <h4 class="text-danger" t-esc="err" />
                                 </t>