Server: Route Handler For /event

The getAllClients function has been added in eventReceipts.ts to return an array of client IDs.

The handleEvent function has been implemented in gameControllers.js to handle event propagation. This function retrieves all client IDs and schedules the event sending to all clients.

The routing in gameRoutes.js has been set up to handle the /events endpoint, including both GET and POST handlers.

Fixes shivansh-bhatnagar18#45

backend/src/controllers/gameControllers.js

@@ -1 +1,21 @@
-// Implement the handler for `/events` endpoint. Refer to ARCHITECTURE.md for implementation details.
+import { getAllClients, scheduleSend } from '../eventRecipients';
+
+async function handleEvent(req, res) {
+    const event = req.body;
+
+    const clientIds = getAllClients();
+
+    const eligibleClientIds = filterEligibleClients(clientIds);
+
+    eligibleClientIds.forEach((clientId) => {
+        scheduleSend(clientId, event);
+    });
+
+    res.status(200).send({ message: 'Event propagated to clients.' });
+}
+
+function filterEligibleClients(clientIds) {
+    return clientIds;
+}
+
+export default handleEvent;

backend/src/eventRecipients.ts

@@ -28,6 +28,10 @@ export function getClient(clientId: ClientId) {
     return clients.get(clientId);
 }
 
+export function getAllClients(): ClientId[] {
+    return Array.from(clients.keys());
+}
+
 // eslint-disable-next-line @typescript-eslint/no-unused-vars
 export function scheduleSend(clientId: ClientId, event: AppEvent) {
     //todo: Enqueue the event for sending.

backend/src/routes/gameRoutes.js

@@ -1,10 +1,13 @@
 import express from 'express';
 import { addClient } from '../eventRecipients';
+import handleEvent from '../controllers/gameControllers';
+
 const router = express.Router();
 
 router.get('/events', (req, res) => {
     addClient('user_id', res);
 });
 
-// the post handler should retrieve the game the user is currently in, and update the game state.
-// The request body contains the event data, as described in ARCHITECTURE.md
+router.post('/events', handleEvent);
+
+export default router;