Initial move

backend/src/app.ts

@@ -0,0 +1,27 @@
+import express from "express";
+import cors from "cors";
+import * as ChannelRoutes from "./routes/channel";
+import * as FileRoutes from "./routes/file";
+import * as MessageRoutes from "./routes/message";
+import * as SearchRoutes from "./routes/search";
+import { authenticate } from "./middleware/auth";
+import { initializeDB } from "./db";
+import { FRONTEND_DIR, UPLOAD_DIR } from "./config";
+
+
+export const app = express();
+
+app.use(express.json());
+app.use(cors());
+app.use('/uploads', express.static(UPLOAD_DIR));
+app.use(express.static(FRONTEND_DIR));
+
+app.use("/channels", ChannelRoutes.router);
+app.use("/channels/:channelId/messages", MessageRoutes.router);
+app.use("/channels/:channelId/messages/:messageId/files", FileRoutes.router);
+app.use("/search", SearchRoutes.router);
+
+app.get('/check-token', authenticate, (req, res) => {
+    res.json({ message: 'Token is valid' });
+});
+