implement basic express server + api

backend/src/index.js

@@ -1,5 +1,22 @@
 import dotenv from 'dotenv';
+import express from 'express';
+import path from 'path';
+import { fileURLToPath } from 'url';
+import apiRouter from './api.js';
 dotenv.config();
-const db = await import('./db.js');
 
-db.initDB();
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.join(path.dirname(__filename), ".."); // going back a dir cuz code is in src/
+const db = await import('./db.js'); // dynamic import because otherwise dotenv will not work correctly
+const app = express();
+
+db.initDB();
+
+app.use(express.static(path.join(__dirname, "public"), {
+  dotfiles: "ignore"
+}));
+app.use("/api", apiRouter);
+
+const server = app.listen(0, () => {
+  console.log(`Server running on http://localhost:${server.address().port}`);
+});