[FIX] account,mail: Fix creation message in chatter for invoices

Add a hook inside mail_thread to be able to get a custom message at
the record creation.
Override this hook in account.move to get a custom creation message
dependent of the move's type.

closes odoo/odoo#37474

Signed-off-by: Laurent Smet <smetl@users.noreply.github.com>

addons/account/models/account_move.py

@@ -1570,6 +1570,13 @@ class AccountMove(models.Model):
             result.append((move.id, name))
         return result
 
+    def _creation_subtype(self):
+        # OVERRIDE
+        if self.type in ('out_invoice', 'out_refund', 'out_receipt'):
+            return self.env.ref('account.mt_invoice_created')
+        else:
+            return super(AccountMove, self)._creation_subtype()
+
     def _track_subtype(self, init_values):
         # OVERRIDE to add custom subtype depending of the state.
         self.ensure_one()
@@ -1581,10 +1588,21 @@ class AccountMove(models.Model):
             return self.env.ref('account.mt_invoice_paid')
         elif 'state' in init_values and self.state == 'posted' and self.is_sale_document(include_receipts=True):
             return self.env.ref('account.mt_invoice_validated')
-        elif 'state' in init_values and self.state == 'draft' and self.is_sale_document(include_receipts=True):
-            return self.env.ref('account.mt_invoice_created')
         return super(AccountMove, self)._track_subtype(init_values)
 
+    def _get_creation_message(self):
+        # OVERRIDE
+        if not self.is_invoice(include_receipts=True):
+            return super()._get_creation_message()
+        return {
+            'out_invoice': _('Invoice Created'),
+            'out_refund': _('Refund Created'),
+            'in_invoice': _('Vendor Bill Created'),
+            'in_refund': _('Credit Note Created'),
+            'out_receipt': _('Sales Receipt Created'),
+            'in_receipt': _('Purchase Receipt Created'),
+        }[self.type]
+
     # -------------------------------------------------------------------------
     # BUSINESS METHODS
     # -------------------------------------------------------------------------

addons/mail/models/mail_thread.py

@@ -280,10 +280,9 @@ class MailThread(models.AbstractModel):
 
         # automatic logging unless asked not to (mainly for various testing purpose)
         if not self._context.get('mail_create_nolog'):
-            doc_name = self.env['ir.model']._get(self._name).name
-            body = _('%s created') % doc_name
             threads_no_subtype = self.env[self._name]
             for thread in threads:
+                body = thread._get_creation_message()
                 subtype = thread._creation_subtype()
                 if subtype:  # if we have a subtype, post message to notify users from _message_auto_subscribe
                     thread.sudo().message_post(body=body, subtype_id=subtype.id, author_id=self.env.user.partner_id.id)
@@ -562,6 +561,14 @@ class MailThread(models.AbstractModel):
         """
         return self.env['mail.message.subtype']
 
+    def _get_creation_message(self):
+        """ Get the creation message to log into the chatter at the record's creation.
+        :returns: The message's body to log.
+        """
+        self.ensure_one()
+        doc_name = self.env['ir.model']._get(self._name).name
+        return _('%s created') % doc_name
+
     def _track_subtype(self, init_values):
         """ Give the subtypes triggered by the changes on the record according
         to values that have been updated.