fairnesscoop / permacoop

@QueryHandler(GetLeaveRequestsOverviewQuery)

export class GetLeaveRequestsOverviewQueryHandler {

  constructor(

    @Inject('IDateUtils')

    private readonly dateUtils: IDateUtils,

    @Inject('ILeaveRepository')

    private readonly leaveRepository: ILeaveRepository

  ) {}

  public async execute(

    query: GetLeaveRequestsOverviewQuery

  ): Promise<ILeaveRequestsOverview> {

    const [startDate, endDate] = this.dateUtils.getLeaveReferencePeriodDays(

      query.date

    );

    const numDaysPerWeek = this.dateUtils.getWorkedDaysPerWeek();

    const numWeeks = this.dateUtils.getNumberOfPaidLeaveWeeks();

    const daysPerYear = numWeeks * numDaysPerWeek;

    const totalDurationTaken = await this.leaveRepository.getSumOfPaidLeaveDurationsBetween(

      startDate,

      endDate,

      query.userId

    );

    const daysTaken = this.dateUtils.getLeaveDurationAsDays(totalDurationTaken);

    const daysRemaining = daysPerYear - daysTaken;

    return {

      daysPerYear,

      daysTaken,

      daysRemaining