create-nest-template-malahimdev/template/src/auth/auth.guard.ts

Scaffolds a NestJS template with Swagger, global pipes, exception filters, MongoDB connection and response helpers.

import { CanActivate, ExecutionContext, Injectable, UnauthorizedException } from '@nestjs/common';

@Injectable()
export class JwtAuthGuard implements CanActivate {
  canActivate(context: ExecutionContext): boolean {
    const request = context.switchToHttp().getRequest();
    const authHeader = request.headers.authorization;

    if (!authHeader || authHeader !== 'Bearer my-secret-token') {
      throw new UnauthorizedException('Invalid or missing token');
    }
    return true;
  }
}