import type { UrlMap } from 'util/index.js';
import type { Analytics } from 'style/style.spec.js';
/** A Session manager object */
interface SessionKey {
    apiKey?: string;
    token?: string;
    exp?: number;
}
/**
 * Session Manager
 *
 * Keep up to date with API keys and session tokens
 */
export default class Session {
    analytics?: Analytics;
    sessionKeys: Record<string, SessionKey>;
    workers: Array<MessageChannel['port2']>;
    currWorker: number;
    totalWorkers: number;
    sessionPromise?: Promise<SessionKey | undefined>;
    /**
     * Load a style via a URL, sending off analytics and utilizing the apiKey if needed
     * @param mapID - the id of the map
     * @param analytics - basic analytics about the GPU and screen dimensions
     * @param apiKey - the api key if needed
     */
    loadStyle(mapID: string, analytics: Analytics, apiKey?: string): void;
    /**
     * Load a worker
     * @param _messagePort - unused
     * @param postPort - the port for a worker to send session messages to
     * @param id - the id of the worker
     */
    loadWorker(_messagePort: MessageChannel['port1'], postPort: MessageChannel['port2'], id: number): void;
    /**
     * Request a worker to process data
     * @returns the port for the worker
     */
    requestWorker(): MessagePort;
    /**
     * Check if the map has an API key
     * @param mapID - the id of the map
     * @returns true if the map has an API key
     */
    hasAPIKey(mapID: string): boolean;
    /**
     * Request a style from the server
     * @param mapID - the id of the map
     * @param style - the style url
     * @param urlMap - the url map to properly modify and resolve urls
     */
    requestStyle(mapID: string, style: string, urlMap?: UrlMap): Promise<void>;
    /**
     * Request a session token from the server to start fetching data
     * @param mapID - the id of the map
     * @returns the session token if available and/or successful
     */
    requestSessionToken(mapID: string): Promise<string | undefined | 'failed'>;
}
export {};