import * as http from "http";
import { ServerPermissionLevel } from "./IAuthenticationToken";
export default class HttpUtilities {
    /**
     * Creates a short, human-readable request description for logging.
     * Format: [HH:MM:SS] [usr:AABBCC] METHOD /path:
     * Or with token: [HH:MM:SS] [usr:AABBCCDDEE] METHOD /path:
     * @param req The HTTP request
     * @param clientIp The client IP address (used to generate user thumbprint)
     * @param tokenThumb Optional 4-char token thumbprint to append for authenticated users
     */
    static getShortReqDescription(req: http.IncomingMessage, clientIp?: string, tokenThumb?: string): string;
    /**
     * Creates a 6-character thumbprint from an IP address or token for session identification.
     *
     * NOTE: This is NOT password hashing - it creates a short visual identifier for display/logging.
     * SHA-256 is appropriate here as we only need a collision-resistant fingerprint.
     */
    static getThumbprint(value: string): string;
    /**
     * Creates a 4-character thumbprint from an identifier for appending to user identification in logs.
     *
     * NOTE: This is NOT password hashing - it creates a short visual identifier for display/logging.
     * SHA-256 is appropriate here as we only need a collision-resistant fingerprint, not a secure
     * password hash. Actual authentication uses AES-GCM encryption, not this thumbprint.
     *
     * @param identifier A unique session identifier (NOT a password) to create a thumbprint from
     */
    static getTokenThumbprint(identifier: string): string;
    /**
     * Checks if an IP address is a local/loopback address.
     */
    static isLocalIp(clientIp: string): boolean;
    /**
     * Formats a client IP address for display, with friendly names for local addresses.
     */
    static formatClientIp(clientIp: string): string;
    /**
     * Returns a human-readable name for a server permission level.
     */
    static getPermissionLevelName(level: ServerPermissionLevel): string;
}