Support for Android group alert behavior

android/src/main/java/com/evollu/react/fcm/SendNotificationTask.java

@@ -92,7 +92,24 @@ public class SendNotificationTask extends AsyncTask<Void, Void, Void> {
             if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP){
                 String group = bundle.getString("group");
                 if (group != null) group = URLDecoder.decode( group, "UTF-8" );
+
                 notification.setGroup(group);
+
+                String groupAlertBehavior = bundle.getString("groupAlertBehavior", "all");
+                switch(groupAlertBehavior) {
+                    case "children":
+                        notification.setGroupAlertBehavior(NotificationCompat.GROUP_ALERT_CHILDREN);
+                        break;
+                    case "summary":
+                        notification.setGroupAlertBehavior(NotificationCompat.GROUP_ALERT_SUMMARY);
+                        break;
+                    case "all":
+                        notification.setGroupAlertBehavior(NotificationCompat.GROUP_ALERT_ALL);
+                        break;
+                    default:
+                        notification.setGroupAlertBehavior(NotificationCompat.GROUP_ALERT_ALL);
+                }
+
                 if (bundle.containsKey("groupSummary") && bundle.getBoolean("groupSummary")) {
                     notification.setGroupSummary(true);
                 }

index.d.ts

@@ -89,6 +89,8 @@ declare module "react-native-fcm" {
         ticker?: string;
         auto_cancel?: boolean;
         group?: string;
+        groupSummary?: boolean;
+        groupAlertBehavior?: string;
         picture?: string;
         ongoing?: boolean;
         lights?: boolean;