feat: define type, prep for company announcements

server/src/routes/announcement.ts

@@ -12,6 +12,7 @@ import { announceOnReddit } from "../modules/announceOnReddit.js";
 import { announceOnTwitter } from "../modules/announceOnTwitter.js";
 import { getIpFromRequest } from "../modules/getIpFromRequest.js";
 import { summarisePost } from "../modules/summarisePost.js";
+import { isAnnouncementType } from "../utils/typeguards.js";
 import type { FastifyPluginAsync } from "fastify";
 
 const oneDay = 24 * 60 * 60 * 1000;
@@ -73,10 +74,10 @@ export const announcementRoutes: FastifyPluginAsync = async(server) => {
         });
       }
 
-      if (type !== "products" && type !== "community") {
+      if (!isAnnouncementType(type)) {
         return await reply.status(400).send({
           error:
-            "Invalid announcement type. Available types: products, community.",
+            `Invalid announcement type. Available types: products, community, company.`,
         });
       }