Remove User and AdminUser controllers; update import paths in UserModule to reflect new directory structure.

src/modules/auth/guards/auth.guard.ts

@@ -0,0 +1,50 @@
+import { CanActivate, ExecutionContext, Injectable, UnauthorizedException, Inject } from '@nestjs/common';
+import { Request } from 'express';
+import { JwtService } from '@nestjs/jwt';
+import { ConfigService } from '@nestjs/config';
+import { IAdminTokenPayload, ITokenPayload } from '../interfaces/IToken-payload';
+
+export interface AdminAuthRequest extends Request {
+  adminId: string;
+  restId: string;
+}
+
+@Injectable()
+export class AuthGuard implements CanActivate {
+  constructor(
+    @Inject(JwtService)
+    private readonly jwtService: JwtService,
+    @Inject(ConfigService)
+    private readonly configService: ConfigService,
+  ) {}
+
+  async canActivate(context: ExecutionContext) {
+    const request = context.switchToHttp().getRequest<AdminAuthRequest>();
+
+    try {
+      const secret = this.configService.get<string>('JWT_SECRET');
+      const token = this.extractTokenFromHeader(request);
+      if (!token) {
+        throw new UnauthorizedException();
+      }
+
+      try {
+        const payload = await this.jwtService.verifyAsync<ITokenPayload>(token, {
+          secret,
+        });
+        request['userId'] = payload.userId;
+        request['restId'] = payload.restId;
+      } catch {
+        throw new UnauthorizedException();
+      }
+      return true;
+    } catch (err) {
+      console.log('error in AuthGuard', err);
+      throw new UnauthorizedException('Invalid or expired token');
+    }
+  }
+  private extractTokenFromHeader(request: Request): string | undefined {
+    const [type, token] = request.headers.authorization?.split(' ') ?? [];
+    return type === 'Bearer' ? token : undefined;
+  }
+}