import log = require("loglevel");
import { sprintf } from "sprintf-js";
// import sprintf = require('sprintf-js').sprintf;

export function fetchErrorHandler(response: Response) {
    // alertify.success('Current position : ' + alertify.get('notifier', 'position'));
    if (!response.ok) {
        return response.text().catch(err => {
            // the status was not ok and there is no json body
            // throw new Error(response.statusText);
            // window.alert(sprintf('Some error occured. Http code is %s', response.status));
            // alertify.error(sprintf('Some error occured. Http code is %s', response.status));
            log.error(sprintf('Some error occured. Http code is %s', response.status));
            log.error();
            return true;
        }).then(json => {
            // the status was not ok but there is a json body
            // throw new Error(json.error.message); // example error message returned by a REST API
            // window.alert(sprintf('Error: %s (Http code %s)', json, response.status));
            // alertify.error(sprintf('Some error occured. Http code is %s', response.status));
            log.error(sprintf('Some error occured. Http code is %s', response.status));
            log.error(json);
            return true;
        });
    }
}