import { HttpClient, HttpErrorResponse, HttpEvent, HttpHeaders } from '@angular/common/http';
import { BehaviorSubject, Observable } from 'rxjs';
export declare class GenericService<T extends any> {
    endpoint?: string;
    /**
     * Http client
     */
    http: HttpClient;
    /**
     * List of entities
     */
    list: BehaviorSubject<any[]>;
    /**
     * Constructor
     *
     * @param http
     */
    constructor(endpoint?: string);
    /**
     * Gets a single entity
     *
     * @param id The id of the entity or relative path
     * @param params Adds query params to the request
     * @param headers Adds headers to the request
     */
    get<T>(id: string | number, params?: Object, headers?: Object, handleError?: boolean): Observable<any>;
    /**
     * Counts entities
     *
     * @param params Adds query params to the request
     * @param path A relative path to the action
     * @param headers Adds headers to the request
     * @param handleError Handle errors
     */
    count(params?: Object, path?: string, headers?: Object, handleError?: boolean): Observable<number>;
    /**
     * Gets a list of entities
     *
     * @param params Adds query params to the request
     * @param headers Adds headers to the request
     * @param path A relative path to the action
     */
    getList(params?: Object, path?: string, headers?: Object): Observable<any>;
    /**
     * Loads data
     * @param params Adds query params to the request
     * @param path A relative path to the action
     * @param headers Adds headers to the request
     */
    loadList(params?: Object, path?: string, headers?: Object): void;
    /**
     * Gets result list as Observable
     */
    getListAsObservable(): Observable<any>;
    /**
     * Creates an entity
     *
     * @param entity The entity to create
     * @param path A relative path to the action
     * @param httpOptions Additional http options, like headers and so on
     * @param handleError Handle errors
     */
    create<T>(entity: any, path?: string, httpOptions?: Object, handleError?: boolean): Observable<T>;
    /**
     * Updates an entity
     *
     * @param entity The entity to update
     * @param path A relative path to the action
     * @param httpOptions Additional http options, like headers and so on
     * @param handleError Handle errors
     */
    update(id: string | number, entity: any, path?: string, httpOptions?: Object, handleError?: boolean): Observable<any>;
    /**
     * Patches an entity
     *
     * @param id id The id of the item to patch
     * @param body The body
     * @param path A relative path to the action
     * @param httpOptions Additional http options, like headers and so on
     * @param handleError Handle errors
     */
    patch(id: string | number, body: any, path?: string, httpOptions?: Object, handleError?: boolean): Observable<any>;
    /**
     * Patches multiple entities
     *
     * @param ids The ids of the items to patch
     * @param body The body
     * @param path A relative path to the action
     * @param httpOptions Additional http options, like headers and so on
     * @param handleError Handle errors
     */
    patchList(ids: string[] | number[], body: any, path?: string, httpOptions?: Object, handleError?: boolean): Observable<any>;
    /**
     * Deletes an entity.
     *
     * @param id The id of the item to delete
     * @param path A relative path to the action
     * @param httpOptions Additional http options, like headers and so on
     * @param handleError Handle errors
     */
    delete(id: string | number, path?: string, httpOptions?: Object, handleError?: boolean): Observable<any>;
    /**
     * Deletes multiple entities.
     *
     * @param ids The ids of the items to delete
     * @param path A relative path to the action
     * @param httpOptions Additional http options, like headers and so on
     * @param handleError Handle errors
     */
    deleteList(ids: string[] | number[], path?: string, httpOptions?: Object, handleError?: boolean): Observable<any>;
    /**
     * Downloads a file
     *
     * @param path A relative path to the action
     * @param params Some query params
     */
    download(path: string, params?: Object, handleError?: boolean): Observable<any>;
    /**
     * Duplicates a record
     * @param id
     */
    duplicate(id: number): Observable<any>;
    /**
     * Uploads a file
     *
     * @param file The file to upload
     * @param path A relative path to the action
     */
    upload(file: File, path?: string, extraData?: object): Observable<any>;
    /**
     * Convert Object to FromData
     *
     * @param body
     */
    protected toFormData(body: Object): FormData;
    /**
     * Convert Object to HttpHeaders
     *
     * @param body
     */
    protected toHttpHeaders(body: Object): HttpHeaders;
    /**
     * Gets file name from Httpheaders: Content-Disposition
     * @param disposition
     */
    protected getFileNameFromHeaders(headers: HttpHeaders): string;
    /**
     * Returns a function that handles Http operation failures.
     * This error handler lets the app continue to run as if no error occurred.
     * @param operation - name of the operation that failed
     */
    protected handleError<T>(operation?: string): (error: HttpErrorResponse) => Observable<T>;
    /**
     * Return distinct message for sent, upload progress, & response events
     *
     * @param event The response event
     * @param file The file beeing uploaded
     */
    protected getEventMessage(event: HttpEvent<any>, file: File): string;
    /**
     * Shows upload progress.
     *
     * @param message
     */
    protected showProgress(message: string): void;
}