refactor: Abstract queue generation and configuration

packages/backend/src/queues/queue.js

@@ -0,0 +1,44 @@
+import process from 'process';
+import { Queue } from 'bullmq';
+import redisConfig from '../config/redis.js';
+import logger from '../helpers/logger.js';
+
+const CONNECTION_REFUSED = 'ECONNREFUSED';
+
+const redisConnection = {
+  connection: redisConfig,
+};
+
+export const generateQueue = (queueName, options) => {
+  const queue = new Queue(queueName, redisConnection);
+
+  queue.on('error', (error) => queueOnError(error, queueName));
+
+  if (options?.runDaily) addScheduler(queueName, queue);
+
+  return queue;
+};
+
+const queueOnError = (error, queueName) => {
+  if (error.code === CONNECTION_REFUSED) {
+    const errorMessage =
+      'Make sure you have installed Redis and it is running.';
+
+    logger.error(errorMessage, error);
+
+    process.exit();
+  }
+
+  logger.error(`Error happened in ${queueName} queue!`, error);
+};
+
+const addScheduler = (queueName, queue) => {
+  const everydayAtOneOclock = '0 1 * * *';
+
+  queue.add(queueName, null, {
+    jobId: queueName,
+    repeat: {
+      pattern: everydayAtOneOclock,
+    },
+  });
+};