2017-07-20 04:28:09 +00:00
|
|
|
/*
|
2020-01-01 17:00:00 +00:00
|
|
|
* Copyright (C) 2017-2020 Alex Yatskov <alex@foosoft.net>
|
2017-07-20 04:28:09 +00:00
|
|
|
* Author: Alex Yatskov <alex@foosoft.net>
|
|
|
|
*
|
|
|
|
* This program is free software: you can redistribute it and/or modify
|
|
|
|
* it under the terms of the GNU General Public License as published by
|
|
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
|
|
* (at your option) any later version.
|
|
|
|
*
|
|
|
|
* This program is distributed in the hope that it will be useful,
|
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
* GNU General Public License for more details.
|
|
|
|
*
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
function requestJson(url, action, params) {
|
|
|
|
return new Promise((resolve, reject) => {
|
|
|
|
const xhr = new XMLHttpRequest();
|
|
|
|
xhr.overrideMimeType('application/json');
|
|
|
|
xhr.addEventListener('load', () => resolve(xhr.responseText));
|
2019-10-08 01:04:58 +00:00
|
|
|
xhr.addEventListener('error', () => reject(new Error('Failed to connect')));
|
2017-07-20 04:28:09 +00:00
|
|
|
xhr.open(action, url);
|
|
|
|
if (params) {
|
|
|
|
xhr.send(JSON.stringify(params));
|
|
|
|
} else {
|
|
|
|
xhr.send();
|
|
|
|
}
|
2019-11-27 03:01:54 +00:00
|
|
|
}).then((responseText) => {
|
2017-07-20 04:28:09 +00:00
|
|
|
try {
|
|
|
|
return JSON.parse(responseText);
|
|
|
|
}
|
|
|
|
catch (e) {
|
2019-10-08 01:04:58 +00:00
|
|
|
return Promise.reject(new Error('Invalid response'));
|
2017-07-20 04:28:09 +00:00
|
|
|
}
|
|
|
|
});
|
|
|
|
}
|