import { EventsHandler, IEventHandler } from '@nestjs/cqrs';
import { CouchService } from '../../data/services/couch.service';
import { STATUS } from 'src/core/strings/constants/base.constants';
import { UserDeletedEvent } from 'src/modules/user-related/user/domain/entities/event/user-deleted.event';
import { UserChangeStatusEvent } from 'src/modules/user-related/user/domain/entities/event/user-change-status.event';
import { UserUpdatedEvent } from 'src/modules/user-related/user/domain/entities/event/user-updated.event';
import { UserDataService } from 'src/modules/user-related/user/data/services/user-data.service';

@EventsHandler(UserDeletedEvent)
export class UserDeletedHandler implements IEventHandler<UserDeletedEvent> {
  constructor(private couchService: CouchService) {}

  async handle(event: UserDeletedEvent) {
    const data = await this.couchService.deleteDoc(
      {
        _id: event.data.id,
        ...event.data.data,
      },
      'user',
    );
  }
}

@EventsHandler(UserChangeStatusEvent, UserUpdatedEvent)
export class UserUpdatedHandler
  implements IEventHandler<UserChangeStatusEvent>
{
  constructor(
    private couchService: CouchService,
    private userService: UserDataService,
  ) {}

  async handle(event: UserChangeStatusEvent) {
    const dataOld = event.data.old;
    const data = event.data.data;
    const user = await this.userService
      .getOneByOptions({
        where: {
          id: data.id,
        },
        relations: [
          'user_privilege',
          'user_privilege.user_privilege_configurations',
        ],
      })
      .then((item) => {
        const user_privilege_configurations = item[
          'user_privilege'
        ]?.user_privilege_configurations?.filter(
          (config) => config.module == 'POS',
        );
        Object.assign(item['user_privilege'], {
          user_privilege_configurations: user_privilege_configurations,
        });
        return item;
      });

    // change status to active
    if (dataOld?.status != data.status && data.status == STATUS.ACTIVE) {
      await this.couchService.createDoc(
        {
          _id: data.id,
          ...user,
        },
        'user',
      );
    } else if (dataOld?.status != data.status) {
      await this.couchService.deleteDoc(
        {
          _id: data.id,
          ...user,
        },
        'user',
      );
    }

    // update
    else {
      await this.couchService.updateDoc(
        {
          _id: data.id,
          ...user,
        },
        'user',
      );
    }
  }
}