import { Injectable } from '@nestjs/common';
import { EventEmitter2 } from '@nestjs/event-emitter';
import { type DomainEvent } from '../domain/domain-event';

@Injectable()
export class EventBusService {
  constructor(private readonly eventEmitter: EventEmitter2) {}

  publish(event: DomainEvent): void {
    this.eventEmitter.emit(event.eventName, event);
  }

  publishAll(events: DomainEvent[]): void {
    for (const event of events) {
      this.publish(event);
    }
  }

  async publishAsync(event: DomainEvent): Promise<void> {
    await this.eventEmitter.emitAsync(event.eventName, event);
  }
}