92 lines
2.9 KiB
JavaScript
92 lines
2.9 KiB
JavaScript
'use strict';
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var subscribe_data = JSON.parse(document.getElementById('subscribe_data').innerHTML);
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var subscribe_button = document.getElementById('subscribe');
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subscribe_button.parentNode['action'] = 'javascript:void(0)';
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if (subscribe_button.getAttribute('data-type') === 'subscribe') {
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subscribe_button.onclick = subscribe;
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} else {
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subscribe_button.onclick = unsubscribe;
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}
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function subscribe(retries = 5) {
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if (retries <= 0) {
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console.log('Failed to subscribe.');
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return;
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}
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var url = '/subscription_ajax?action_create_subscription_to_channel=1&redirect=false' +
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'&c=' + subscribe_data.ucid;
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var xhr = new XMLHttpRequest();
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xhr.responseType = 'json';
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xhr.timeout = 10000;
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xhr.open('POST', url, true);
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xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
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var fallback = subscribe_button.innerHTML;
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subscribe_button.onclick = unsubscribe;
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subscribe_button.innerHTML = '<b>' + subscribe_data.unsubscribe_text + ' | ' + subscribe_data.sub_count_text + '</b>';
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xhr.onreadystatechange = function () {
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if (xhr.readyState === 4) {
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if (xhr.status !== 200) {
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subscribe_button.onclick = subscribe;
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subscribe_button.innerHTML = fallback;
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}
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}
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};
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xhr.onerror = function () {
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console.log('Subscribing failed... ' + retries + '/5');
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setTimeout(function () { subscribe(retries - 1); }, 1000);
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};
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xhr.ontimeout = function () {
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console.log('Subscribing failed... ' + retries + '/5');
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subscribe(retries - 1);
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};
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xhr.send('csrf_token=' + subscribe_data.csrf_token);
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}
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function unsubscribe(retries = 5) {
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if (retries <= 0) {
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console.log('Failed to subscribe');
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return;
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}
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var url = '/subscription_ajax?action_remove_subscriptions=1&redirect=false' +
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'&c=' + subscribe_data.ucid;
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var xhr = new XMLHttpRequest();
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xhr.responseType = 'json';
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xhr.timeout = 10000;
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xhr.open('POST', url, true);
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xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
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var fallback = subscribe_button.innerHTML;
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subscribe_button.onclick = subscribe;
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subscribe_button.innerHTML = '<b>' + subscribe_data.subscribe_text + ' | ' + subscribe_data.sub_count_text + '</b>';
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xhr.onreadystatechange = function () {
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if (xhr.readyState === 4) {
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if (xhr.status !== 200) {
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subscribe_button.onclick = unsubscribe;
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subscribe_button.innerHTML = fallback;
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}
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}
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};
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xhr.onerror = function () {
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console.log('Unsubscribing failed... ' + retries + '/5');
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setTimeout(function () { unsubscribe(retries - 1); }, 1000);
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};
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xhr.ontimeout = function () {
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console.log('Unsubscribing failed... ' + retries + '/5');
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unsubscribe(retries - 1);
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};
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xhr.send('csrf_token=' + subscribe_data.csrf_token);
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}
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