import {Http, ConnectionBackend, RequestOptions, Request, RequestOptionsArgs, Response} from "angular2/http";
import {Observable} from "rxjs/Observable";

export class CustomHttp extends Http {

    constructor(backend:ConnectionBackend, defaultOptions:RequestOptions) {
        super(backend, defaultOptions)
    }

    request(url:string | Request, options?:RequestOptionsArgs):Observable<Response> {
        return super.request(url, options).catch((res: Response) => this.handleResponseError(res));
    }

    get(url:string, options?:RequestOptionsArgs):Observable<Response> {
        return super.get(url, options).catch((res: Response) => this.handleResponseError(res));
    }

    post(url:string, body:string, options?:RequestOptionsArgs):Observable<Response> {
        return super.post(url, body, options).catch((res: Response) => this.handleResponseError(res))
    }

    put(url:string, body:string, options?:RequestOptionsArgs):Observable<Response> {
        return super.put(url, body, options).catch((res: Response) => this.handleResponseError(res));
    }

    delete(url:string, options?:RequestOptionsArgs):Observable<Response> {
        return super.delete(url, options).catch((res: Response) => this.handleResponseError(res));
    }

    patch(url:string, body:string, options?:RequestOptionsArgs):Observable<Response> {
        return super.patch(url, body, options).catch((res: Response) => this.handleResponseError(res));
    }

    head(url:string, options?:RequestOptionsArgs):Observable<Response> {
        return super.head(url, options).catch((res: Response) => this.handleResponseError(res));
    }

    private handleResponseError(res:Response) {

        console.log(res);

        if (res.status === 401) {
            // do something
        } else if (res.status === 500) {
            // do something
        }
        return Observable.throw(res);

    }
}