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livetrax/share/web_surfaces/js/main.js

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2.5 KiB
JavaScript

/*
* Copyright (C) 2020 Luciano Iam <lucianito@gmail.com>
*
* 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 2 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
(() => {
const INDEX_RESOURCE = 'index.json';
async function fetchIndex (url) {
const response = await fetch(url);
if (response.status == 200) {
return await response.json();
} else {
throw new Error(`HTTP response status ${response.status}`);
}
}
function buildItem (group, model) {
const li = document.createElement('li');
li.innerHTML = `<li>
<a href="${group}/${model.id}/">${model.name}</a>
<p>${model.description}</p>
</li>`;
return li;
}
function printIndex (index) {
['builtin', 'user'].forEach((group) => {
const ul = document.getElementById(group);
let models = index[group];
if (models.length > 0) {
models.sort((a, b) => a.name.localeCompare(b.name));
for (model of models) {
ul.appendChild(buildItem(group, model));
}
} else {
ul.parentNode.style.display = 'none';
}
});
document.getElementById('index').style.display = 'inline';
}
function printError (message) {
const error = document.getElementById('error');
error.innerHTML = message;
error.style.display = 'inline';
}
async function main () {
try {
const indexUrl = `${location.protocol}//${location.host}/${INDEX_RESOURCE}`;
const index = await fetchIndex (indexUrl);
printIndex(index);
} catch (err) {
printError(`Error loading ${INDEX_RESOURCE}: ${err.message}`);
}
document.getElementById('loading').style.display = 'none';
}
main();
})();