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 {NotEventOwnerException} from 'src/Domain/FairCalendar/Exception/NotEventOwnerException';

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

import {Event} from 'src/Domain/FairCalendar/Event.entity';

@CommandHandler(DeleteEventCommand)

export class DeleteEventCommandHandler {

  constructor(

    @Inject('IEventRepository')

    private readonly eventRepository: IEventRepository

  ) {}

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

    const {id, user} = command;

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

    if (!(event instanceof Event)) {

      throw new EventNotFoundException();

    }

    if (event.getUser().getId() !== user.getId()) {

      throw new NotEventOwnerException();

    }

    this.eventRepository.delete(event);

  }

}