src/events/ActivityStarts.ts

import { ensure, isDefined } from 'tiny-types';

import { ActivityDetails, CorrelationId, Timestamp } from '../model';
import { DomainEvent } from './DomainEvent';

/**
 * @desc
 *  Emitted when an {@link Activity} starts.
 *
 * @abstract
 * @extends {DomainEvent}
 */
export abstract class ActivityStarts extends DomainEvent {
    constructor(
        public readonly sceneId: CorrelationId,
        public readonly activityId: CorrelationId,
        public readonly details: ActivityDetails,
        timestamp?: Timestamp,
    ) {
        super(timestamp);
        ensure('sceneId', sceneId, isDefined());
        ensure('activityId', activityId, isDefined());
        ensure('details', details, isDefined());
    }
}