import { Injectable, CanActivate, ExecutionContext } from "@nestjs/common";
import { Reflector } from "@nestjs/core";
import { ROLES_KEY } from "../decorators/roles.decorator";

@Injectable()
export class RolesGuard implements CanActivate {
  constructor(private reflector: Reflector) {}

  canActivate(context: ExecutionContext): boolean {
    const requiredRoles = this.reflector.getAllAndOverride<string[]>(
      ROLES_KEY,
      [context.getHandler(), context.getClass()]
    );
    if (!requiredRoles) {
      return true;
    }
    const { user } = context.switchToHttp().getRequest();
    if (user?.role?.name) {
      if (requiredRoles.includes(user.role.name)) {
        return true;
      } else {
        return false;
      }
    } else {
      return false;
    }
  }

}
