import { PersonRole } from '../core/enums/PersonEnums';
import { IRoleAssignment } from '../types';
export declare function isAdmin(role: PersonRole): boolean;
export declare function isTrialRole(role: PersonRole): boolean;
/**
 * getActiveAssignmentsForPerson
 *
 * Filters role assignments to include only those that:
 * - belong to the specified user
 * - are currently active
 * - have not expired
 *
 * @param userId - The user ID to filter by
 * @param assignments - All role assignments in the system
 * @param now - Optional override for current time (defaults to Date.now())
 * @returns Array of active, non-expired role assignments
 */
export declare function getActiveAssignmentsForPerson(userId: string, assignments: IRoleAssignment[], now?: number): IRoleAssignment[];
/**
 * isRoleStillValid
 *
 * Determines whether a single role assignment is still valid
 * (i.e., active and not expired).
 *
 * @param assignment - The assignment to check
 * @param now - Optional override for current time (defaults to Date.now())
 * @returns True if the role is valid, otherwise false
 */
export declare function isRoleStillValid(assignment: IRoleAssignment, now?: number): boolean;
/**
 * validateRoleAssignments
 *
 * Returns a new list of role assignments with any expired roles
 * marked as `status: 'expired'`.
 *
 * NOTE: This function is non-mutative.
 *
 * @param assignments - List of role assignments to validate
 * @param now - Optional override for current time (defaults to Date.now())
 * @returns Updated list of role assignments
 */
export declare function validateRoleAssignments(assignments: IRoleAssignment[], now?: number): IRoleAssignment[];