chore: add id validator

README.md

@@ -39,7 +39,7 @@ https://count.dsrkafuu.net/{id}?theme={asoul,gelbooru,moebooru,rule34}&length={1
 3. `{&length}`: Number between `1-10` (default: `7`) or string `auto`
 4. `{&add}`: Controls whether make the counter count or not (default: `1`)
 
-Recommend to use `user:usage` like string as ID for better management and potential issue tracking.
+Make a pull request to add your id in `ids.json` to use the free public counter. Recommend to use `user:usage` like string as ID for better management and potential issue tracking.
 
 **API Endpoints**
 

ids.json

@@ -0,0 +1,4 @@
+{
+  "dsrkafuu:demo": "Demo for GitHub & preview site.",
+  "dsrkafuu:home": "Personal blog & GitHub page."
+}

package.json

@@ -1,7 +1,7 @@
 {
   "private": true,
   "name": "moe-counter-cf",
-  "version": "2.1.0",
+  "version": "2.2.0",
   "description": "Fork of Moe Counter for fast global access powered by Cloudflare Workers.",
   "author": "DSRKafuU <dsrkafuu@outlook.com> (https://dsrkafuu.net)",
   "license": "MIT",

src/utils.js

@@ -1,5 +1,6 @@
 import { encode } from 'base64-arraybuffer';
 import { ResError } from './response';
+import ids from '../ids.json';
 
 /**
  * @param {string} str
@@ -18,6 +19,9 @@ export function validateID(id) {
   if (!/^[a-z0-9:.@_-]{1,256}$/i.test(id)) {
     throw new ResError(400, 'Invalid Counter ID');
   }
+  if (!ids[id]) {
+    throw new ResError(400, 'Unregistered Counter ID');
+  }
   return id;
 }