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