first commit

s3-nodejs-api/src/controllers/streamController.ts

@@ -0,0 +1,23 @@
+import { Request, Response } from 'express';
+import StreamService from '../services/streamService';
+
+export default class StreamController {
+    constructor(private streamService: StreamService) { }
+
+    // GET /api/streams/:key
+    async streamAudio(req: Request, res: Response) {
+        const { fileName: key } = req.params as { fileName: string };
+        const range = req.headers.range as string | undefined;
+        if (!key) return res.status(400).send('Missing file key');
+
+        try {
+            const result = await this.streamService.streamFromS3({ key, range });
+            res.writeHead(result.status, result.headers);
+            result.body.pipe(res);
+        } catch (err: any) {
+            const message = err?.message || 'Error streaming audio';
+            const status = err?.statusCode || 500;
+            res.status(status).send(message);
+        }
+    }
+}