feat: 后端也添加了写了一半的人机验证模块

apps/backend/src/captcha/captcha.service.ts

@@ -0,0 +1,27 @@
+import { Injectable } from '@nestjs/common';
+import { ErrorCode } from 'src/common/constants/error-codes';
+import { BusinessException } from 'src/common/exceptions/business.exception';
+
+export enum CaptchaContext {
+    SEND_SMS = 'send_sms',
+    PASSKEY = 'passkey',
+}
+
+@Injectable()
+export class CaptchaService {
+    public async generate(context: CaptchaContext, ip: string, userId?: string) {
+        await this.checkRateLimit(ip, context)
+    }
+
+    public async verify(token: string, ip: string, userId?: string) {
+
+    }
+
+    private async checkRateLimit(ip: string, context: CaptchaContext) {
+        /** @todo */
+        throw new BusinessException({
+            code: ErrorCode.CAPTCHA_RARE_LIMIT,
+            message: '服务器处理不过来了，过会儿再试试吧',
+        });
+    }
+}