import Guid from './Guid';
/**
 * Interface for properties neccesary for building a Session object.
 * @internal
 */
export interface ISessionData {
    /** {@inheritDoc Session.applicationId} */
    applicationId: string;
    /** {@inheritDoc Session.pageId} */
    pageId?: string;
    /** {@inheritDoc Session.clientSideApplicationId} */
    clientSideApplicationId: string;
}
/**
 * Provides access to the application's browser session and active page.
 *
 * @public
 */
export default class Session {
    private static _applicationId;
    private static _pageId;
    private static _clientSideApplicationId;
    /**
     * This is called once by the system during startup to initialize the Session object.
     * @internal
     */
    static _initialize(data: ISessionData): void;
    /**
     * This is called by the framework to indicate that the current page has changed.
     * @internal
     */
    static _changePage(): void;
    /**
     * A unique identifier for the current instance of the client-side application.
     *
     * @remarks
     * A unique identifier used to correlate logging and other diagnostic information. Its lifetime
     * persists for the duration of the client-side application instance, i.e. it begins with the
     * server request that renders the page, and ends e.g. when the browser tab is closed or F5 is
     * pressed to reload the page.  Note that if the application's router supports in-place navigation
     * (via the history.pushState() API), the application session persists across these transitions.
     */
    static get applicationId(): Guid;
    /**
     * The id of the currently running application
     */
    static get clientSideApplicationId(): string;
    /**
     * This is called by the framework to set the current application if it may have changed.
     * @internal
     */
    static _setClientSideApplicationId(clientSideApplicationId: string): void;
    /**
     * A unique identifier for the current page within the client-side application.
     *
     * @remarks
     * A unique identifier used to correlate logging and other diagnostic information.  Whereas the
     * {@link Session.applicationId} tracks the entire lifetime of the client-side application instance,
     * the pageId tracks an individual "page" that is rendered.
     *
     * For example, suppose that the application initially loads PageA, then the user does in-place
     * navigation (via the history.pushState() API) to PageB, then navigates back to PageA, and finally
     * they close the browser tab. During this sequence, the applicationId will remain the same, however
     * the pageId will change on each navigation.  The 3 different pageId values are used by the diagnostics
     * e.g. to track success/failure statistics for PageA independently of PageB.
     *
     * The concept of a page is subjective and defined by the router for a particular application.
     */
    static get pageId(): Guid;
}
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