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app/workers/document.worker.js

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+/**
+ * Copyright (c) 2026 Niolla
+ * All rights reserved.
+ *
+ * This source code is proprietary and confidential.
+ * Unauthorized copying, modification, distribution, or use
+ * of this file, via any medium, is strictly prohibited.
+ */
+
+// app/workers/pdf.worker.js
+
+const { Worker } = require("bullmq");
+
+const redis = require("../config/redisClient");
+
+const { generateDocument } = require("../logic/documents");
+
+const { uploadToS3 } = require("../utils/s3Upload.utill");
+
+module.exports = async function createDocumentWorker() {
+  const documentWorker = new Worker(
+    "document-generation",
+
+    async (job) => {
+      try {
+        const { document, documentType, data } = job.data;
+
+        console.log(
+          `📄 Processing Job ${job.id}: document="${document}", documentType="${documentType}"`,
+        );
+
+        const { fileBuffer, fileName, mimeType } = await generateDocument(
+          document,
+          documentType,
+          data,
+        );
+
+        /**
+         * Store in S3 instead of local filesystem
+         */
+        const s3Key = await uploadToS3(
+          {
+            originalname: fileName,
+            buffer: fileBuffer,
+            mimetype: mimeType,
+          },
+          "document",
+        );
+
+        // Extract UUID from S3 key
+        const documentId = s3Key
+          .split("/")
+          .pop()
+          .replace(/\.[^/.]+$/, "");
+
+        console.log(`✅ Job ${job.id} completed: ${fileName} (${s3Key})`);
+
+        /**
+         * Keep response compatible with existing flow
+         */
+        return {
+          fileName,
+          mimeType,
+          size: fileBuffer.length,
+          s3Key,
+          documentId,
+        };
+      } catch (err) {
+        console.error(`❌ Job ${job.id} failed:`, err.message);
+
+        throw err;
+      }
+    },
+
+    {
+      connection: redis,
+      concurrency: 2,
+    },
+  );
+
+  documentWorker.on("error", (err) => {
+    console.error("❌ Document Worker Error:", err);
+  });
+
+  documentWorker.on("failed", (job, err) => {
+    console.error(`❌ Job ${job?.id} failed after retries:`, err.message);
+  });
+
+  documentWorker.on("completed", (job) => {
+    console.log(`✅ Worker completed Job ${job.id}`);
+  });
+
+  console.log("📄 Document Worker initialized");
+
+  return documentWorker;
+};