added batch download, needs testing

src/services/s3/s3-router.ts

@@ -6,6 +6,7 @@ import { Role } from "../auth/auth-models";
 
 import { S3 } from "@aws-sdk/client-s3";
 import { getResumeUrl, postResumeUrl } from "./s3-utils";
+import BatchResumeDownloadValidator from "./s3-schema";
 
 const s3Router: Router = Router();
 
@@ -37,7 +38,7 @@ s3Router.get(
         const userId = payload.userId;
 
         const s3 = res.locals.s3 as S3;
-        
+
         try {
             const downloadUrl = await getResumeUrl(userId, s3);
             return res.status(StatusCodes.OK).send({ url: downloadUrl });
@@ -48,7 +49,7 @@ s3Router.get(
 );
 
 s3Router.get(
-    "/download/:USERID",
+    "/download/user/:USERID",
     RoleChecker([Role.Enum.STAFF, Role.Enum.CORPORATE], false),
     s3ClientMiddleware,
     async (req, res, next) => {
@@ -64,4 +65,35 @@ s3Router.get(
     }
 );
 
+s3Router.get(
+    "/download/batch/:USERID",
+    RoleChecker([Role.Enum.STAFF, Role.Enum.CORPORATE], false),
+    s3ClientMiddleware,
+    async (req, res, next) => {
+        const s3 = res.locals.s3 as S3;
+
+        try {
+            const { userIds } = BatchResumeDownloadValidator.parse(req.body);
+
+            const batchDownloadPromises = userIds.map((userId) =>
+                getResumeUrl(userId, s3)
+            );
+
+            const batchDownloadUrls = await Promise.allSettled(
+                batchDownloadPromises
+            );
+
+            const filteredUrls = batchDownloadUrls.forEach((result) => {
+                if (result.status === "fulfilled") {
+                    return result.value;
+                }
+            });
+
+            return res.status(StatusCodes.OK).send({ url: filteredUrls });
+        } catch (error) {
+            next(error);
+        }
+    }
+);
+
 export default s3Router;

src/services/s3/s3-schema.ts

@@ -0,0 +1,7 @@
+import { z } from "zod";
+
+const BatchResumeDownloadValidator = z.object({
+    userIds: z.string().array(),
+});
+
+export default BatchResumeDownloadValidator;

src/services/s3/s3-utils.ts

@@ -25,7 +25,7 @@ export async function getResumeUrl(userId: string, client: S3) {
         Bucket: Config.S3_BUCKET_NAME,
         Key: `${userId}.pdf`,
     });
-    
+
     return getSignedUrl(client, command, {
         expiresIn: Config.RESUME_URL_EXPIRY_SECONDS,
     });