import { Observable } from 'rxjs';
import { MainService } from '../main/main.service';
import { FileEntity, CreatedFile } from '../models/file';
import * as i0 from "@angular/core";
/**
 * file service for drupal
 * @see BACK_END/admin/structure/services/list/END_POINT/resources for more details
 */
export declare class FileService extends MainService {
    entityType: string;
    /**
     * impelement index resource
     * @return array of files
     */
    getAllFiles(): Observable<FileEntity[]>;
    /**
     * implement retrive resource
     * @param fid file id to retrive
     * @return object of the file entity
     */
    getFileById(fid: number): Observable<FileEntity>;
    /**
     * implement create resource
     * @param file file entity to create
     * @return created file details
     */
    createFile(file: FileEntity): Observable<CreatedFile>;
    /**
     * implement delete resource
     * @param fid file id to delete
     * @return boolean array if file deleted, otherwise return false
     * keep in mined that you can not delete a file if it is already referenced by a node
     */
    deleteFile(fid: number): Observable<boolean[]>;
    /**
     * creating raw file
     * this require rest support for form multi data
     */
    createRaw(): Observable<boolean[]>;
    static ɵfac: i0.ɵɵFactoryDeclaration<FileService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<FileService>;
}