recaptcha: add friendy hint

packages/recaptcha/handler.ts

@@ -1,10 +1,11 @@
 import superagent from 'superagent';
-import { ValidationError } from 'hydrooj/dist/error';
+import { ValidationError, ForbiddenError } from 'hydrooj/dist/error';
 import { PRIV } from 'hydrooj/dist/model/builtin';
 import * as system from 'hydrooj/dist/model/system';
 import * as bus from 'hydrooj/dist/service/bus';
 
 bus.on('handler/before/UserRegister', async (thisArg) => {
+    if (!system.get('recaptcha.key')) return;
     if (thisArg.request.method !== 'post') {
         thisArg.UiContext.recaptchaKey = system.get('recaptcha.key');
         return;
@@ -15,7 +16,7 @@ bus.on('handler/before/UserRegister', async (thisArg) => {
         .field('secret', system.get('recaptcha.secret'))
         .field('response', thisArg.args.captcha)
         .field('remoteip', thisArg.request.ip);
-    if (!response.body.success) throw new ValidationError('captcha fail');
+    if (!response.body.success) throw new ForbiddenError('captcha fail');
 });
 
 bus.on('handler/after/UserRegister', async (thisArg) => {

packages/recaptcha/locale/zh.yaml

@@ -0,0 +1 @@
+captcha fail: 您没有通过 Recaptcha 验证。

packages/recaptcha/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@hydrooj/recaptcha",
-    "version": "1.0.2",
+    "version": "1.0.3",
     "description": "Google reCAPTCHA",
     "main": "package.json",
     "repository": "https://github.com/hydro-dev/Hydro.git",