[FIX] pos_adyen: polling response of adyen on correct line

closes odoo/odoo#90740

Signed-off-by: Quentin Lejeune (qle) <qle@odoo.com>

addons/pos_adyen/static/src/js/payment_adyen.js

@@ -28,6 +28,11 @@ var PaymentAdyen = PaymentInterface.extend({
         this.most_recent_service_id = id;
     },
 
+    pending_adyen_line() {
+      return this.pos.get_order().paymentlines.find(
+        paymentLine => paymentLine.payment_method.use_payment_terminal === 'adyen' && (!paymentLine.is_done()));
+    },
+
     // private methods
     _reset_state: function () {
         this.was_cancelled = false;
@@ -38,7 +43,7 @@ var PaymentAdyen = PaymentInterface.extend({
 
     _handle_odoo_connection_failure: function (data) {
         // handle timeout
-        var line = this.pos.get_order().selected_paymentline;
+        var line = this.pending_adyen_line();
         if (line) {
             line.set_payment_status('retry');
         }
@@ -209,7 +214,7 @@ var PaymentAdyen = PaymentInterface.extend({
             var notification = status.latest_response;
             var last_diagnosis_service_id = status.last_received_diagnosis_id;
             var order = self.pos.get_order();
-            var line = order.selected_paymentline;
+            var line = self.pending_adyen_line();
 
 
             if (self.last_diagnosis_service_id != last_diagnosis_service_id) {
@@ -277,7 +282,7 @@ var PaymentAdyen = PaymentInterface.extend({
     },
 
     _adyen_handle_response: function (response) {
-        var line = this.pos.get_order().selected_paymentline;
+        var line = this.pending_adyen_line();
 
         if (response.error && response.error.status_code == 401) {
             this._show_error(_t('Authentication failed. Please check your Adyen credentials.'));