import { UrlReflectionService } from '@bespunky/angular-zen/router-x';
import { LanguageIntegrationService } from '../../services/language-integration.service';
import { UrlLocalizationConfig } from '../config/url-localization-config';
import { UrlLocalizer } from './url-localizer';
import * as i0 from "@angular/core";
/**
 * Provides tools for localization and delocalization of the currently navigated url by adding or removing
 * a route segment dedicated for language.
 *
 * @export
 * @class RoutePositionUrlLocalizer
 * @extends {UrlLocalizer}
 */
export declare class RoutePositionUrlLocalizer extends UrlLocalizer {
    private language;
    /**
     * The position of the language segment in the route of the currently navigated url.
     * Positive numbers indicate position from the beginning of the route.
     * Negative numbers indicate position from the end of the route.
     * Zero is ignored and will cause methods to return an unchanged url.
     *
     * @type {number}
     */
    readonly position: number;
    constructor({ strategy }: UrlLocalizationConfig, urlReflection: UrlReflectionService, language: LanguageIntegrationService);
    /**
     * Localizes the currently navigated url by adding or updating the language segment of the route.
     * If `position` is positive, language lookup will be performed from the beginning of route.
     * If `position` is negative, language lookup will be performed from the end of route.
     * If `position` points to an index out of bounds, the last/first element will be treated as the language.
     *
     * #### Example
     * Position  1 - /en/some/route - first segment from the left.
     * Position  2 - /some/en/route - second segment from the left.
     * Position  5 - /some/route/en - out of bounds. last segment from the left.
     *
     * Position -1 - /some/route/en - first segment from the right.
     * Position -2 - /some/en/route - second segment from the right.
     * Position -5 - /en/some/route - out of bounds. last segment from the right.
     *
     * @param {string} lang
     * @returns {string} The currently navigated url localized to the specified language.
     */
    localize(lang: string): string;
    /**
     * Delocalizes the currently navigated url by removing the language segment from the route.
     * If `position` is positive, language lookup will be performed from the beginning of route.
     * If `position` is negative, language lookup will be performed from the end of route.
     * If `position` points to an index out of bounds, the last/first element will be treated as the language.
     * If no language exists at the language position, returns the url unchanged.
     *
     * #### Example
     * Position  1 - /en/some/route - first segment from the left.
     * Position  2 - /some/en/route - second segment from the left.
     * Position  5 - /some/route/en - out of bounds. last segment from the left.
     *
     * Position -1 - /some/route/en - first segment from the right.
     * Position -2 - /some/en/route - second segment from the right.
     * Position -5 - /en/some/route - out of bounds. last segment from the right.
     *
     * @returns {string} The delocalized currently navigated url.
     */
    delocalize(): string;
    private transformUrl;
    /**
     * Updates the specified route segments array with the specified language.
     *
     * @protected
     * @param {string} lang The new language to set to the route.
     * @param {string[]} segments The current route segments.
     * @param {number} langIndex The index of the expected language segment.
     * @param {boolean} isLanguage `true` if the current value at `langIndex` is a supported language; otherwise `false`.
     */
    protected insertOrReplaceLanguage(lang: string, segments: string[], langIndex: number, isLanguage: boolean): void;
    /**
     * Removes the language segment from a route segments array.
     * If the language index points to a non-language segment, returns without changing the segments.
     *
     * @protected
     * @param {string[]} segments The current route segments.
     * @param {number} langIndex The index of the expected langauge segment.
     * @param {boolean} isLanguage `true` if the current value at `langIndex` is a supported language; otherwise `false`.
     */
    protected removeLanguage(segments: string[], langIndex: number, isLanguage: boolean): void;
    /**
     * Accessing segments by index requires the `this.position` to be translated into an index.
     * As the position can either be positive or negative, there are two different formulas for index calculation.
     * In turn, this means two different scenarios with different edge cases.
     *
     * To unify the cases and reduce complexity, when position is negative, this method reverses the segments array, runs the segments manipulation, then reverses it again to restore the original order.
     * This way the indexing is always done from one side of the array.
     *
     * @protected
     * @param {string[]} segments The segments about to be manipulated.
     * @param {() => void} accessSegments The function that needs safe access by index to the
     */
    protected accessSegmentsSafely(segments: string[], accessSegments: () => void): void;
    /**
     * Indicates whether the configured language position is positive, resulting in a lookup from the left (positive lookup).
     * `true` if positive lookup should be performed; otherwise `false`.
     *
     * @readonly
     * @protected
     * @type {boolean}
     */
    protected get isPositiveLookup(): boolean;
    /**
     * Indicates whether the configured language position is negative, resulting in a lookup from the right (negative lookup).
     * `true` if negative lookup should be performed; otherwise `false`.
     *
     * @readonly
     * @protected
     * @type {boolean}
     */
    protected get isNegativeLookup(): boolean;
    /**
     * Calculates the absolute index for the configured language position.
     *
     * @protected
     * @returns {number}
     */
    protected indexOfPosition(): number;
    /**
     * Checks whether the specified value is a language supported by the language integration services.
     *
     * @protected
     * @param {string} value The value to check.
     * @returns {boolean} `true` if the value is a supported language; otherwise `false`.
     */
    protected isLanguage(value: string): boolean;
    /**
     * Concats the host url as given by the url reflection service with the segments and the current query string to create
     * a fully qualified url.
     *
     * @protected
     * @param {string[]} segments The route segments to place in the url.
     * @returns {string} The fully qualified url composed of the host url as given by the url reflection service, the specified route segments, and the current query params.
     */
    protected composeUrl(segments: string[]): string;
    static ɵfac: i0.ɵɵFactoryDeclaration<RoutePositionUrlLocalizer, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<RoutePositionUrlLocalizer>;
}