import { EvaluationReason } from './EvaluationReason';

export class EvaluationDetails {
  readonly configSyncTime: number;
  readonly initTime: number;
  readonly serverTime: number;
  readonly reason: EvaluationReason;

  private constructor(
    configSyncTime: number,
    initTime: number,
    reason: EvaluationReason,
  ) {
    this.configSyncTime = configSyncTime;
    this.initTime = initTime;
    this.reason = reason;
    this.serverTime = Date.now();
  }

  static uninitialized() {
    return new EvaluationDetails(0, 0, 'Uninitialized');
  }

  static unsupported(configSyncTime: number, initialUpdateTime: number) {
    return new EvaluationDetails(
      configSyncTime,
      initialUpdateTime,
      'Unsupported',
    );
  }

  static persisted(configSyncTime: number, initialUpdateTime: number) {
    return new EvaluationDetails(
      configSyncTime,
      initialUpdateTime,
      'Persisted',
    );
  }

  static make(
    configSyncTime: number,
    initialUpdateTime: number,
    reason: EvaluationReason,
  ) {
    return new EvaluationDetails(configSyncTime, initialUpdateTime, reason);
  }
}