fix: add robots.txt

src/index.js

@@ -3,15 +3,17 @@ import { genErrorResponse, ResError } from './response';
 import { withCORS } from './middlewares';
 import * as index from './routes/index';
 import * as favicon from './routes/favicon';
+import * as robots from './routes/robots';
 import * as image from './routes/image';
 import * as api from './routes/api';
 
 const router = Router();
 router.options('*', withCORS);
-
-// routes
 router.get('/', index.get);
 router.get('/favicon.ico', favicon.get);
+router.get('/robots.txt', robots.get);
+
+// routes
 router.get('/:id', image.get);
 router.get('/api/:id', api.get);
 // router.delete('/api/:id', api.del);

src/routes/robots.js

@@ -0,0 +1,15 @@
+import { genResponse } from '../response';
+
+/**
+ * @param {Request} req
+ */
+export async function get(req) {
+  const robots = 'User-agent: *\nDisallow: /';
+  return await genResponse(req, robots, {
+    status: 200,
+    headers: {
+      'Content-Type': 'text/plain; charset=utf-8',
+      'Cache-Control': 'public, max-age=86400',
+    },
+  });
+}