fairnesscoop / permacoop

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

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

import { GetLeavesCalendarQuery } from './GetLeavesCalendarQuery';

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

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

@QueryHandler(GetLeavesCalendarQuery)

export class GetLeavesCalendarQueryHandler {

  constructor(

    @Inject('IDateUtils')

    private readonly dateUtils: IDateUtils,

    @Inject('ILeaveRequestRepository')

    private readonly leaveRequestRepository: ILeaveRequestRepository

  ) {}

  async execute(query: GetLeavesCalendarQuery): Promise<string> {

    const leaveRequests = await this.leaveRequestRepository.findAcceptedLeaveRequests();

    // See: https://www.rfc-editor.org/rfc/rfc5545

    const lines = [

      'BEGIN:VCALENDAR',

      'VERSION:2.0',

      'PRODID:-//Fairness//Permacoop//FR',

      'CALSCALE:GREGORIAN',

      'X-WR-CALNAME:Congés Fairness',

      'X-APPLE-CALENDAR-COLOR:#00CA9E'

    ];

    leaveRequests.forEach(leaveRequest => {

      lines.push(

        'BEGIN:VEVENT',

        `DTSTART;VALUE=DATE:${this.dateUtils.format(

          new Date(leaveRequest.getStartDate()),

          'yyyyMMdd'

        )}`,

        `DTEND;VALUE=DATE:${this.dateUtils.format(

          new Date(leaveRequest.getEndDate()),

          'yyyyMMdd'

        )}`,

        `SUMMARY:Congés ${leaveRequest.getUser().getFullName()}`,

        'END:VEVENT'

      );

    });

    lines.push('END:VCALENDAR');

    return lines.join('\r\n');

  }

}