PEER-220 Send notif socket before begin match

Signed-off-by: SeeuSim <[email protected]>

Author: SeeuSim

backend/matching/src/controllers/match-request.ts

@@ -0,0 +1,35 @@
+import type { Request, Response } from 'express';
+import { StatusCodes } from 'http-status-codes';
+
+import { client } from '@/lib/db';
+import type { IRedisClient, IRequestMatchPayload } from '@/types';
+import { createNotifSocket, queueingService } from '@/services';
+
+let redisClient: IRedisClient;
+export const matchRequestController = async (req: Request, res: Response) => {
+  const payload: Partial<IRequestMatchPayload> = req.body;
+  const { userId, difficulty, topic } = payload;
+  if (!userId || (!difficulty && !topic)) {
+    return res.status(StatusCodes.UNPROCESSABLE_ENTITY).json('Malformed Request');
+  }
+
+  if (!redisClient || !redisClient.isOpen || !redisClient.isReady) {
+    redisClient = await client.connect();
+  }
+
+  // TODO: Assign a proper socket to the user
+  const socketRoom = createNotifSocket(userId);
+
+  // TODO: Test if room logic works and notif socket can connect
+  // Send socket to user first for them to subscribe
+  res
+    .status(StatusCodes.OK)
+    .json({
+      socketPort: socketRoom,
+    })
+    .end();
+
+  // TODO: Wait for user to connect to notif socket, or add a time buffer
+
+  await queueingService(redisClient, { userId, difficulty, topic, socketPort: socketRoom });
+};