import { EventsHandler, IEventHandler } from '@nestjs/cqrs';
import { CommentThreadResolvedEvent } from '@task-stream/api/tracker/domain';
import { UpsertMaterializedCommentRepository } from '../ports/upsert-materialized-comment.repository';
import { UserDirectory } from '../ports/user-directory';
import { ReadModelNotifier, versionOf } from './read-model-notifier';

@EventsHandler(CommentThreadResolvedEvent)
export class CommentThreadResolvedEventHandler
  implements IEventHandler<CommentThreadResolvedEvent>
{
  constructor(
    private readonly upsertMaterializedCommentRepository: UpsertMaterializedCommentRepository,
    private readonly users: UserDirectory,
    private readonly notifier: ReadModelNotifier,
  ) {}

  async handle(event: CommentThreadResolvedEvent) {
    const refs = await this.users.refs([event.actorId]);
    await this.upsertMaterializedCommentRepository.upsert({
      id: event.aggregateId,
      resolved: event.resolved,
      resolvedBy: event.resolved ? refs.of(event.actorId) : null,
      resolvedAt: event.resolved ? event.occurredAt : null,
      version: versionOf(event),
    });
    await this.notifier.comment(event.aggregateId, event.issueId, event);
  }
}