chore: Initial commit of Opencord base state

packages/server/src/routes/livekit.ts

@@ -0,0 +1,47 @@
+import type { FastifyInstance } from 'fastify';
+import { AccessToken } from 'livekit-server-sdk';
+import { authenticate } from '../utils/auth.js';
+import { config } from '../config.js';
+import { getChannelServerId, isMember } from '../utils/permissions.js';
+import type { LiveKitTokenRequest, LiveKitTokenResponse } from '@opencord/shared';
+
+export async function livekitRoutes(app: FastifyInstance): Promise<void> {
+  app.post<{ Body: LiveKitTokenRequest }>('/api/livekit/token', {
+    preHandler: authenticate,
+  }, async (request, reply) => {
+    const { channelId } = request.body;
+
+    if (!channelId || typeof channelId !== 'string') {
+      return reply.code(400).send({ error: 'channelId is required', statusCode: 400 });
+    }
+
+    const serverId = getChannelServerId(channelId);
+    if (!serverId) {
+      return reply.code(404).send({ error: 'Channel not found', statusCode: 404 });
+    }
+
+    if (!isMember(serverId, request.userId)) {
+      return reply.code(403).send({ error: 'You are not a member of this server', statusCode: 403 });
+    }
+
+    const identity = `${request.userId}:${request.username}`;
+
+    const token = new AccessToken(config.livekit.apiKey, config.livekit.apiSecret, {
+      identity,
+      ttl: '1h',
+    });
+
+    token.addGrant({
+      room: channelId,
+      roomJoin: true,
+      canPublish: true,
+      canSubscribe: true,
+      canPublishData: true,
+    });
+
+    const jwt = await token.toJwt();
+
+    const response: LiveKitTokenResponse = { token: jwt };
+    return reply.code(200).send(response);
+  });
+}