fix: 修复RolesGuard因AuthGuard结构变化导致的不可用的问题

apps/backend/src/common/guard/roles.guard.ts

@@ -1,17 +1,27 @@
 import {
-  BadRequestException,
   CanActivate,
   ExecutionContext,
   ForbiddenException,
   Injectable,
+  InternalServerErrorException,
+  Logger,
+  UnauthorizedException,
 } from '@nestjs/common';
 import { Reflector } from '@nestjs/core';
+import { Request } from 'express';
+import { AuthUser } from 'src/auth/decorator/current-user.decorator';
 import { Role } from 'src/auth/role.enum';
-import { User } from 'src/user/entities/user.entity';
+import { UserService } from 'src/user/user.service';
 
 @Injectable()
 export class RolesGuard implements CanActivate {
-  constructor(private reflector: Reflector) {}
+
+  private logger = new Logger(RolesGuard.name);
+
+  constructor(
+    private reflector: Reflector,
+    private readonly userService: UserService,
+  ) { }
 
   async canActivate(context: ExecutionContext): Promise<boolean> {
     const requiredRoles = this.reflector.getAllAndOverride<Role[] | undefined>(
@@ -21,11 +31,23 @@ export class RolesGuard implements CanActivate {
 
     if (!requiredRoles) return true;
 
-    const request = context.switchToHttp().getRequest();
+    const request = context.switchToHttp().getRequest<Request>();
-    const user = request.user as User | void;
+    const authUser = request.user as AuthUser;
 
+    if (!authUser) {
+      this.logger.warn(
+        `Path: ${request.path} has RolesGuard enabled, but it seems AuthGuard was forgotten.`
+      )
+      throw new InternalServerErrorException('服务器内部错误');
+    }
+
+    const { userId } = authUser;
+    const user = await this.userService.findOne({ userId })
     if (!user) {
-      throw new BadRequestException('服务器内部错误');
+      this.logger.warn(
+        `UserId: ${user.userId} has a valid login credential, but the user information does not exist.`
+      )
+      throw new UnauthorizedException('用户不存在');
     }
 
     if (!requiredRoles.some((role) => user.roles.includes(role))) {