79 行
2.6 KiB
JavaScript
79 行
2.6 KiB
JavaScript
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(timeouts = 0) {
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if (timeouts > 10) {
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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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'&referer=' + location.pathname + location.search;
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var xhr = new XMLHttpRequest();
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xhr.responseType = 'json';
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xhr.timeout = 20000;
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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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xhr.send('csrf_token=' + subscribe_data.csrf_token);
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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.ontimeout = function () {
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console.log('Subscribing timed out.');
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subscribe(timeouts + 1);
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};
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}
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function unsubscribe(timeouts = 0) {
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if (timeouts > 10) {
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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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'&referer=' + location.pathname + location.search;
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var xhr = new XMLHttpRequest();
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xhr.responseType = 'json';
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xhr.timeout = 20000;
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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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xhr.send('csrf_token=' + subscribe_data.csrf_token);
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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.ontimeout = function () {
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console.log('Unsubscribing timed out.');
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unsubscribe(timeouts + 1);
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};
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}
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