fairnesscoop / permacoop

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';

import { IUserRepository } from 'src/Domain/HumanResource/User/Repository/IUserRepository';

import { UserNotFoundException } from 'src/Domain/HumanResource/User/Exception/UserNotFoundException';

import { CanLeaveRequestBeCancelled } from 'src/Domain/HumanResource/Leave/Specification/CanLeaveRequestBeCancelled';

@QueryHandler(GetLeaveRequestsQuery)

export class GetLeaveRequestsQueryHandler {

  constructor(

    @Inject('ILeaveRequestRepository')

    private readonly leaveRequestRepository: ILeaveRequestRepository,

    @Inject('IUserRepository')

    private readonly userRepository: IUserRepository,

    @Inject('IDateUtils')

    private readonly dateUtils: IDateUtils,

    private readonly canLeaveRequestBeCancelled: CanLeaveRequestBeCancelled

  ) {}

  public async execute({

    currentUserId,

    page,

    status

  }: GetLeaveRequestsQuery): Promise<Pagination<LeaveRequestView>> {

    const leaveRequestViews: LeaveRequestView[] = [];

    const [

      leaveRequests,

      total

    ] = await this.leaveRequestRepository.findLeaveRequests(page, status);

    const currentUser = await this.userRepository.findOneById(currentUserId);

    if (!currentUser) {

      throw new UserNotFoundException();

    }

    for (const leaveRequest of leaveRequests) {

      const leaveUser = leaveRequest.getUser();

      leaveRequestViews.push(

        new LeaveRequestView(

          leaveRequest.getId(),

          leaveRequest.getType(),

          leaveRequest.getStatus(),

          leaveRequest.getStartDate(),

          leaveRequest.getEndDate(),

          this.dateUtils.getLeaveDuration(

            leaveRequest.getStartDate(),

            leaveRequest.isStartsAllDay(),

            leaveRequest.getEndDate(),

            leaveRequest.isEndsAllDay()

          ),

          this.canLeaveRequestBeCancelled.isSatisfiedBy(

            currentUser,

            leaveRequest

          ),

          null,

          new UserSummaryView(

            leaveUser.getId(),

            leaveUser.getFirstName(),

            leaveUser.getLastName()

          )

        )

      );

    }