Refactoring to Typescript...

server/middlewares.ts

@@ -0,0 +1,61 @@
+import express, { NextFunction, Request, Response, Router } from 'express'
+import { User } from '../shared/model'
+
+const createRouter =
+    <T>(setup: (r: Router, options?: T) => void) =>
+    (options: T) => {
+        const r = express.Router()
+        setup(r, options)
+        return r
+    }
+
+export const createStatusRouter = createRouter(r => {
+    r.get('/', (req, res) => {
+        res.json({ url: req.originalUrl, status: 'ok' })
+    })
+}) as () => Router
+
+// export class PingRouter extends express.Router {
+//     constructor() {
+//         super()
+
+//         this.post('/', (req, res) => {
+//             if (req.body?.message === 'ping') {
+//                 res.json('pong')
+//             } else {
+//                 res.status(400)
+//                 res.json('Invalid request')
+//             }
+//         })
+//     }
+// }
+
+export const INVALID_SESSION = `invalid session token`
+
+export const authMiddleware =
+    <U>(getUserForSession: (sid: string) => U) =>
+    async (req: Request, res: Response, next: NextFunction) => {
+        if (req.cookies.sid) {
+            const user = await getUserForSession(req.cookies.sid)
+            if (user) {
+                // @ts-ignore
+                req.user = user
+            } else {
+                res.cookie('sid', '', { expires: new Date() })
+            }
+        }
+
+        next()
+    }
+
+interface AuthenticatedRequest extends Request {
+    user: User | null
+}
+
+export const authenticatedMiddleware = (
+    req: AuthenticatedRequest,
+    res: Response,
+    next: NextFunction
+) => {
+    req.user && next()
+}