add transfer subscription operation

Author: fadi-george

src/core/modelRepo/OperationModelStore.ts

@@ -12,6 +12,7 @@ import { SetPropertyOperation } from '../operations/SetPropertyOperation';
 import { SetTagOperation } from '../operations/SetTagOperation';
 import { TrackSessionEndOperation } from '../operations/TrackSessionEndOperation';
 import { TrackSessionStartOperation } from '../operations/TrackSessionStartOperation';
+import { TransferSubscriptionOperation } from '../operations/TransferSubscriptionOperation';
 import { UpdateSubscriptionOperation } from '../operations/UpdateSubscriptionOperation';
 import { ModelStore } from './ModelStore';
 
@@ -54,6 +55,9 @@ export class OperationModelStore extends ModelStore<Operation> {
       case OPERATION_NAME.DELETE_SUBSCRIPTION:
         operation = new DeleteSubscriptionOperation();
         break;
+      case OPERATION_NAME.TRANSFER_SUBSCRIPTION:
+        operation = new TransferSubscriptionOperation();
+        break;
       case OPERATION_NAME.REFRESH_USER:
         operation = new RefreshUserOperation();
         break;

src/core/operations/TransferSubscriptionOperation.ts

@@ -0,0 +1,23 @@
+import { OPERATION_NAME } from '../executors/constants';
+import { BaseSubscriptionOperation } from './BaseSubscriptionOperation';
+import { GroupComparisonType, GroupComparisonValue } from './Operation';
+
+/**
+ * An Operation to transfer a subscription to a new owner on the OneSignal backend.
+ */
+export class TransferSubscriptionOperation extends BaseSubscriptionOperation {
+  constructor(appId?: string, onesignalId?: string, subscriptionId?: string) {
+    super(OPERATION_NAME.TRANSFER_SUBSCRIPTION, appId, onesignalId);
+    if (subscriptionId) {
+      this.subscriptionId = subscriptionId;
+    }
+  }
+
+  override get groupComparisonType(): GroupComparisonValue {
+    return GroupComparisonType.NONE;
+  }
+
+  override get modifyComparisonKey(): string {
+    return `${this.appId}.Subscription.${this.subscriptionId}.Transfer`;
+  }
+}