Token Refresh

source/server/index.ts

@@ -1,6 +1,7 @@
 import 'dotenv/config';
-import express from 'express';
+import express, { Request, Response, NextFunction } from 'express';
 import cookieParser from 'cookie-parser';
+import jwt from 'jsonwebtoken';
 import path from 'path';
 import authRouter  from './routes/auth';
 import adminRouter from './routes/admin';
@@ -10,6 +11,31 @@ const app = express();
 app.set( 'trust proxy', 1 );
 app.use( express.json() );
 app.use( cookieParser() );
+
+app.use( ( req: Request, res: Response, next: NextFunction ) =>
+{
+  if ( req.path.startsWith( '/api/' ) ) { next(); return; }
+  const token = req.cookies?.accessToken as string | undefined;
+  if ( !token ) { next(); return; }
+  try
+  {
+    jwt.verify( token, process.env.JWT_SECRET ?? '' );
+    next();
+  }
+  catch ( err )
+  {
+    if ( err instanceof jwt.TokenExpiredError )
+    {
+      const redirect = encodeURIComponent( req.protocol + '://' + req.get( 'host' ) + req.originalUrl );
+      res.redirect( `/api/auth/refresh-session?redirect=${redirect}` );
+    }
+    else
+    {
+      next();
+    }
+  }
+} );
+
 app.use( express.static( path.join( __dirname, '..', '..', 'build', 'app' ) ) );
 
 app.use( '/api/auth',  authRouter  );