import { User, SecurityClearance } from "vr-models";
/**
 * Get user's security clearance level
 * If user with security clearance is provided, extract level directly
 * Otherwise fetch from database
 */
export declare function getUserLevel(userOrId: User | string, securityClearance?: SecurityClearance): Promise<{
    level: number;
    role: string;
    clearance: SecurityClearance | null;
}>;
/**
 * Check if admin level is superior to target level (strictly greater)
 */
export declare function isSuperior(adminLevel: number, targetLevel: number): boolean;
/**
 * Check if admin level is subordinate to target level (strictly less)
 */
export declare function isSubordinate(adminLevel: number, targetLevel: number): boolean;
/**
 * Check if admin level is equal to target level
 */
export declare function isRankEqual(adminLevel: number, targetLevel: number): boolean;
/**
 * Check if admin level is subordinate or equal to target level
 */
export declare function isSubordinateOrEqual(adminLevel: number, targetLevel: number): boolean;
/**
 * Check if admin level is superior or equal to target level
 */
export declare function isSuperiorOrEqual(adminLevel: number, targetLevel: number): boolean;
/**
 * Validate hierarchy for an action with custom message
 */
export declare function validateHierarchy(adminLevel: number, targetLevel: number, action: string, allowEqual?: boolean): {
    allowed: boolean;
    message?: string;
};
/**
 * Filter users based on hierarchical permissions using security clearance levels
 * Pure function - no database calls
 *
 * @param currentUserLevel - The level of the requesting user (from securityClearance.level)
 * @param users - Array of users to filter (must include securityClearance association)
 * @param currentUserId - Optional: ID of the requesting user to always include them
 * @returns Filtered array of users
 */
export declare const hierarchicalView: (currentUserLevel: number, users: any[], currentUserId?: string) => any[];