fairnesscoop / permacoop

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

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

import { IEventRepository } from 'src/Domain/FairCalendar/Repository/IEventRepository';

import { DeleteEventCommand } from './DeleteEventCommand';

import { EventDoesntBelongToUserException } from 'src/Domain/FairCalendar/Exception/EventDoesntBelongToUserException';

import { EventNotFoundException } from 'src/Domain/FairCalendar/Exception/EventNotFoundException';

import { DoesEventBelongToUser } from 'src/Domain/FairCalendar/Specification/DoesEventBelongToUser';

@CommandHandler(DeleteEventCommand)

export class DeleteEventCommandHandler {

  constructor(

    @Inject('IEventRepository')

    private readonly eventRepository: IEventRepository,

    private readonly doesEventBelongToUser: DoesEventBelongToUser

  ) {}

  public async execute(command: DeleteEventCommand): Promise<void> {

    const { id, user } = command;

    const event = await this.eventRepository.findOneById(id);

    if (!event) {

      throw new EventNotFoundException();

    }

    if (false === this.doesEventBelongToUser.isSatisfiedBy(event, user)) {

      throw new EventDoesntBelongToUserException();

    }

    await this.eventRepository.delete(event);

  }

}