/**
 * Session Response Mapper
 *
 * Transforms session API responses to Session objects.
 * Handles individual sessions and session lists.
 *
 * @layer Infrastructure - API Client
 */

import {
  sessionSchema,
  sessionListSchema,
  type Session,
} from '@archer/api-interface';

/**
 * SessionResponseMapper
 *
 * Maps session responses from API to Session objects.
 * Sessions are simple data objects (not domain entities).
 */
export class SessionResponseMapper {
  /**
   * Maps SessionResponse to Session object
   *
   * @param response - Session response from API
   * @returns Session object
   * @throws ZodError if validation fails
   */
  static toSession(response: unknown): Session {
    return sessionSchema.parse(response);
  }

  /**
   * Maps SessionListResponse to array of Session objects
   *
   * @param response - Session list response from API
   * @returns Array of Session objects with total count
   * @throws ZodError if validation fails
   */
  static toSessionList(response: unknown): { sessions: Session[]; total: number } {
    const validated = sessionListSchema.parse(response);

    return {
      sessions: validated.sessions,
      total: validated.total,
    };
  }
}