docbrown/app/assets/javascripts/initializers/initializeBodyData.js
2020-06-08 20:08:40 -04:00

61 lines
1.8 KiB
JavaScript

/* global checkUserLoggedIn */
function removeExistingCSRF() {
var csrfTokenMeta = document.querySelector("meta[name='csrf-token']");
var csrfParamMeta = document.querySelector("meta[name='csrf-param']");
if (csrfTokenMeta && csrfParamMeta) {
csrfTokenMeta.parentNode.removeChild(csrfTokenMeta);
csrfParamMeta.parentNode.removeChild(csrfParamMeta);
}
}
function fetchBaseData() {
var xmlhttp;
if (window.XMLHttpRequest) {
xmlhttp = new XMLHttpRequest();
} else {
xmlhttp = new ActiveXObject('Microsoft.XMLHTTP');
}
xmlhttp.onreadystatechange = () => {
if (xmlhttp.readyState === XMLHttpRequest.DONE) {
// Assigning CSRF
var json = JSON.parse(xmlhttp.responseText);
if (json.token) {
removeExistingCSRF();
}
var newCsrfParamMeta = document.createElement('meta');
newCsrfParamMeta.name = 'csrf-param';
newCsrfParamMeta.content = json.param;
document.head.appendChild(newCsrfParamMeta);
var newCsrfTokenMeta = document.createElement('meta');
newCsrfTokenMeta.name = 'csrf-token';
newCsrfTokenMeta.content = json.token;
document.head.appendChild(newCsrfTokenMeta);
document.body.dataset.loaded = 'true';
// Assigning Broadcast
if (json.broadcast) {
document.body.dataset.broadcast = json.broadcast;
}
// Assigning User
if (checkUserLoggedIn()) {
document.body.dataset.user = json.user;
browserStoreCache('set', json.user);
setTimeout(() => {
if (typeof ga === 'function') {
ga('set', 'userId', JSON.parse(json.user).id);
}
}, 400);
}
}
};
xmlhttp.open('GET', '/async_info/base_data', true);
xmlhttp.send();
}
function initializeBodyData() {
fetchBaseData();
}