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function domReady(fn) {
if (document.readyState === 'complete' || document.readyState === 'interactive') {
setTimeout(fn, 1);
} else {
document.addEventListener('DOMContentLoaded', fn);
}
}
domReady(() => {
if (!('fetch' in window) || !('Promise' in window)) {
const hidden_input = document.createElement('input');
hidden_input.setAttribute('type', 'hidden');
hidden_input.setAttribute('name', 'basic');
hidden_input.setAttribute('value', 1);
document.querySelector('form').append(hidden_input);
return;
}
var requests = [];
document.querySelectorAll('dl.requests > dt[data-request-url]').forEach((element) => {
requests.push({
element: element,
url: element.dataset.requestUrl,
event_source: element.dataset.eventSource !== undefined
});
});
const submit_button = document.querySelector('form button[type="submit"].button');
submit_button.disabled = true;
function next() {
if (requests.length === 0) {
submit_button.disabled = false;
return;
}
const current = requests.shift();
var promise;
current.element.classList.add('requesting');
if (current.event_source && 'EventSource' in window) {
const notifier = document.createElement('div');
notifier.setAttribute('data-percent', 0);
promise = new Promise((resolve, reject) => {
current.element.classList.add('event-sourced');
const progress = current.element.nextElementSibling.nextElementSibling.nextElementSibling;
var total = 0;
progress.insertAdjacentElement('afterend', notifier);
notifier.setAttribute(
'style',
`left: ${progress.offsetLeft}px; top: ${progress.offsetTop}px`
);
const evtSource = new EventSource(current.url + '?evts=1', {
withCredentials: true
});
evtSource.addEventListener('total', (event) => {
total = parseInt(event.data, 10);
progress.setAttribute('max', total);
});
evtSource.addEventListener('file', (event) => {
notifier.setAttribute('data-file', event.data);
});
evtSource.addEventListener('current', (event) => {
let current = parseInt(event.data, 10);
progress.setAttribute('value', current);
notifier.setAttribute('data-percent', (100 * current / total).toFixed(2));
});
evtSource.addEventListener('error', (event) => {
evtSource.close();
reject(event.data || 'Fehler beim Installieren');
});
evtSource.addEventListener('close', () => {
evtSource.close();
resolve();
});
});
promise.finally(() => {
if (notifier.parentNode) {
notifier.parentNode.removeChild(notifier);
}
current.element.classList.remove('event-sourced');
});
} else {
promise = fetch(current.url, {
cache: 'no-cache',
credentials: 'same-origin'
}).then(response => {
if (!response.ok) {
return response.json().then(message => {
return Promise.reject(message);
});
}
});
}
promise.then(() => {
current.element.classList.add('succeeded');
next();
}).catch(error => {
current.element.classList.add('failed');
if (error !== null && error === Object(error)) {
current.element.nextElementSibling.nextElementSibling.querySelectorAll('.response').forEach((element) => {
let key = element.dataset.key;
element.value = error[key];
});
} else {
current.element.nextElementSibling.nextElementSibling.querySelector('.response').innerText = error;
}
}).finally(() => {
current.element.classList.remove('requesting');
});
}
next();
});
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