import { RequestEnvelope } from 'ask-sdk-model';

export interface UserActivityAdapter {
  trackSkillInvocation(request: RequestEnvelope): Promise<void> | void;
}

export interface UserActivityConfig {
  /**
   * The days of the churned user
   * If set 3, when the user invoke the skill after last invocation more than 4 days,
   * the user marked asa a returned user
   */
  returnedUserDays: number;
}

export interface UserActivity {
  invocationNumber: number;
  lastInvocationTime: number;
  conversationStartAt: number;
}