import { SortDirection } from '@angular/material/sort';
import { Observable } from 'rxjs';
import { MigImageData, Page } from 'projects/mat-image-grid-lib/src';
type UnionKeys<T> = T extends T ? keyof T : never;
type StrictUnionHelper<T, TAll> = T extends T ? T & Partial<Record<Exclude<UnionKeys<TAll>, keyof T>, undefined>> : never;
type StrictUnion<T> = StrictUnionHelper<T, T>;
/** Sort direction with 'asc ' or 'desc' only */
export type SortDirectionAscDesc = Omit<SortDirection, ''>;
/**
 * Type defining the sorting a column.
 * @template T - type defining the data of an image
 */
export type FieldSortDefinition<T> = {
    fieldName: keyof T;
    sortDirection: SortDirectionAscDesc;
};
/**
 * Definition of a simple string filter for an image.
 * @template T - type defining the data of an image
 */
export type FieldFilterDefinitionSimple<T> = {
    fieldName: keyof T;
    value: string | number | Date;
};
/**
 * Definition of a range filter for an image.
 * @template T - type defining the data of an image
 */
export type FieldFilterDefinitionRange<T> = {
    fieldName: keyof T;
    valueFrom: string | number | Date;
    valueTo: string | number | Date;
};
/**
 * Definition of a field to filter a list of images.
 * @template T - type defining the data of an image
 */
export type FieldFilterDefinition<T> = StrictUnion<FieldFilterDefinitionSimple<T> | FieldFilterDefinitionRange<T>>;
/**
 * Interface defining the properties of a requests for a range of images.
 */
export interface RequestImagesRange {
    startImageIndex: number;
    numberOfImages: number;
}
/**
 * Interface defining the methods of a class fetching image data from a server.
 * @template T - type defining the data of an image
 */
export interface DataStoreAdapter<T extends MigImageData> {
    /**
     * Fetching data from the datastore respecting sorting and filtering.
     * @param imagesRange - range of images to get data for
     * @param sorts - optional array of objects with the sorting definition
     * @param filters - optional array of objects with the filter definition
     * @returns observable emitting a Page<T> object
     */
    getPagedData: (imagesRange: RequestImagesRange, sorts?: FieldSortDefinition<T>[], filters?: FieldFilterDefinition<T>[]) => Observable<Page<T>>;
}
export {};