fairnesscoop / permacoop

import { QueryHandler } from '@nestjs/cqrs';

import { GetLeaveRequestsQuery } from './GetLeaveRequestsQuery';

import { Inject } from '@nestjs/common';

import { IDateUtils } from 'src/Application/IDateUtils';

import { LeaveRequestView } from '../View/LeaveRequestView';

import { UserSummaryView } from '../../User/View/UserSummaryView';

import { Pagination } from 'src/Application/Common/Pagination';

import { ILeaveRequestRepository } from 'src/Domain/HumanResource/Leave/Repository/ILeaveRequestRepository';

@QueryHandler(GetLeaveRequestsQuery)

export class GetLeaveRequestsQueryHandler {

  constructor(

    @Inject('ILeaveRequestRepository')

    private readonly leaveRequestRepository: ILeaveRequestRepository,

    @Inject('IDateUtils')

    private readonly dateUtils: IDateUtils

  ) {}

  public async execute(

    query: GetLeaveRequestsQuery

  ): Promise<Pagination<LeaveRequestView>> {

    const leaveRequestViews: LeaveRequestView[] = [];

    const [ leaves, total ] = await this.leaveRequestRepository.findLeaveRequests(

      query.page

    );

    for (const leave of leaves) {

      const user = leave.getUser();

      let duration = this.dateUtils.getWorkedDaysDuringAPeriod(

        new Date(leave.getStartDate()),

        new Date(leave.getEndDate())

      ).length;

      if (false === leave.isStartsAllDay()) {

        duration -= 0.5;

      }

      if (false === leave.isEndsAllDay()) {

        duration -= 0.5;

      }

      leaveRequestViews.push(

        new LeaveRequestView(

          leave.getId(),

          leave.getType(),

          leave.getStatus(),

          leave.getStartDate(),

          leave.getEndDate(),

          duration,

          new UserSummaryView(

            user.getId(),

            user.getFirstName(),

            user.getLastName()

          )

        )

      );

    }

    return new Pagination<LeaveRequestView>(leaveRequestViews, total);

  }

}