import { TerraUploadItem } from './model/terra-upload-item';
import { TerraUploadQueue } from './model/terra-upload-queue';
import { TerraStorageObjectList } from './model/terra-storage-object-list';
import { TerraImageMetadata } from './model/terra-image-metadata.interface';
import { L10nTranslationService } from 'angular-l10n';
import { TerraBaseMetadataStorageService } from './terra-base-metadata-storage.interface';
import { Observable } from 'rxjs';
import { AlertService } from '../alert/alert.service';
import { HttpClient } from '@angular/common/http';
import * as i0 from "@angular/core";
export declare class TerraFrontendStorageService extends TerraBaseMetadataStorageService {
    private http;
    private _translation;
    private _alertService;
    isImagePreviewEnabled: boolean;
    name: string;
    queue: TerraUploadQueue;
    private readonly url;
    private _storageInitialized;
    private _storageListSubject;
    private get _storageList();
    get uploadProgress(): Observable<number>;
    private _metadataCache;
    constructor(http: HttpClient, _translation: L10nTranslationService, _alertService: AlertService);
    getStorageList(): Observable<TerraStorageObjectList>;
    createDirectory(path: string): Observable<void>;
    uploadFiles(files: FileList | Array<File>, path?: string): Array<TerraUploadItem>;
    getMetadata(key: string): Observable<TerraImageMetadata>;
    updateMetadata(key: string, metadata: TerraImageMetadata): Observable<any>;
    deleteFiles(keyList: Array<string>): Observable<void>;
    private _uploadFile;
    private _cleanStorageList;
    private _initStorageList;
    static ɵfac: i0.ɵɵFactoryDeclaration<TerraFrontendStorageService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<TerraFrontendStorageService>;
}