import { ColumnDefinition, SortCondition } from 'verben-ng-ui';
import { SearchPropertyValue, SortDirection as ApiSortDirection } from '../models/api-payload';
import * as i0 from "@angular/core";
/** The sort segment every list/search URL in this API ends with. */
export interface PrimarySort {
    sortParam: string;
    sortOrder: ApiSortDirection;
}
/**
 * Converts SortCondition[] emitted by lib-data-sort into what the workflow API
 * needs.
 *
 * This API carries sort in the URL — every endpoint ends
 * `/{skip}/{limit}/{sortParam}/{sortOrder}`, including the POST search — so
 * `buildPrimarySort()` is the load-bearing one and only the first condition can
 * be honoured. `buildSortPayload()` still emits the full set on the POST body so
 * multi-column sort starts working the moment the backend reads it.
 */
export declare class SortHandlerService {
    /**
     * Collapse the sort conditions to the single sort the URL can carry.
     * Returns null when nothing sortable was selected, so callers fall back to
     * the page's configured default.
     */
    buildPrimarySort<T>(sorts: SortCondition[], columns: ColumnDefinition<T>[]): PrimarySort | null;
    buildSortPayload<T>(sorts: SortCondition[], columns: ColumnDefinition<T>[]): SearchPropertyValue[];
    private mapSortDirection;
    static ɵfac: i0.ɵɵFactoryDeclaration<SortHandlerService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<SortHandlerService>;
}