[FIX] release capital request matched with credit note

when a release capital request is matched with a credit note it's marked
as paid but it should not process it has a normal paid release capital
request. No share should be given to the cooperator and no operation
should be written in the cooperator register

easy_my_coop/models/account_invoice.py

@@ -67,13 +67,24 @@ class account_invoice(models.Model):
     def confirm_paid(self):
         for invoice in self:
             super(account_invoice, invoice).confirm_paid()
-            if invoice.partner_id.cooperator and invoice.release_capital_request and invoice.type == 'out_invoice':
-                effective_date = datetime.now().strftime("%d/%m/%Y")
+            # we check if there is an open refund for this invoice. in this case we
+            # don't run the process_subscription function as the invoice has been 
+            # reconciled with a refund and not a payment.
+            refund = self.search([('type','=','out_refund'),('origin','=',invoice.number)]).filtered(lambda record: record.state == 'open')
+
+            if invoice.partner_id.cooperator and invoice.release_capital_request \
+                and invoice.type == 'out_invoice' and not refund:
                 #take the effective date from the payment. by default the confirmation date is the payment date
-                if invoice.payment_move_line_ids :
+                effective_date = datetime.now().strftime("%d/%m/%Y")
+
+                if invoice.payment_move_line_ids:
                     move_line = invoice.payment_move_line_ids[0]
                     effective_date = move_line.date
 
                 invoice.subscription_request.state = 'paid'
                 invoice.post_process_confirm_paid(effective_date)
+            # if there is a open refund we mark the subscription as cancelled
+            elif invoice.partner_id.cooperator and invoice.release_capital_request \
+                and invoice.type == 'out_invoice' and refund:
+                invoice.subscription_request.state = 'cancelled'
         return True