feat(notifications): User Notifications

backend/src/services/notification/notification-queue.ts

@@ -0,0 +1,43 @@
+import { QueueJobs, QueueName, TQueueServiceFactory } from "@app/queue";
+
+import { TCreateUserNotificationDTO } from "./notification-types";
+import { TUserNotificationDALFactory } from "./user-notification-dal";
+
+type TNotificationQueueServiceFactoryDep = {
+  userNotificationDAL: Pick<TUserNotificationDALFactory, "create">;
+  queueService: TQueueServiceFactory;
+};
+
+export type TNotificationQueueServiceFactory = {
+  pushUserNotification: (data: TCreateUserNotificationDTO) => Promise<void>;
+};
+
+export const notificationQueueServiceFactory = async ({
+  userNotificationDAL,
+  queueService
+}: TNotificationQueueServiceFactoryDep): Promise<TNotificationQueueServiceFactory> => {
+  const pushUserNotification = async (data: TCreateUserNotificationDTO) => {
+    await queueService.queue<QueueName.UserNotification>(QueueName.UserNotification, QueueJobs.UserNotification, data, {
+      removeOnFail: {
+        count: 3
+      },
+      removeOnComplete: true
+    });
+  };
+
+  queueService.start(QueueName.UserNotification, async (job) => {
+    const { userId, type, title, body, link } = job.data;
+
+    await userNotificationDAL.create({
+      userId,
+      type,
+      title,
+      body,
+      link
+    });
+  });
+
+  return {
+    pushUserNotification
+  };
+};