import { BaseDataLoaderService, Vacancy, VacancyService } from "@cv/core";
import { Injectable, Scope } from "@nestjs/common";

@Injectable({ scope: Scope.REQUEST })
export class VacancyDataLoaderService extends BaseDataLoaderService<
  string,
  Vacancy
> {
  constructor(readonly vacancyService: VacancyService) {
    super(async (ids: readonly string[]) => {
      const vacancies = await vacancyService.findMany({ id: [...ids] });

      const vacancyMap = new Map<string, Vacancy>();
      for (const vacancy of vacancies) {
        vacancyMap.set(vacancy.id, vacancy);
      }

      return ids.map((id) => vacancyMap.get(id) ?? null);
    });
  }
}