static/js/update: Cover looping condition

1 files changed, 13 insertions, 0 deletions

diff --git a/assets/js/index.js b/assets/js/index.js
index dc0bc0c..aac9a66 100644
--- a/assets/js/index.js
+++ b/assets/js/index.js
@@ -94,6 +94,12 @@
     });
 })();
 (function() {
+    const cookiesDisabled = !navigator.cookieEnabled;
+    if (cookiesDisabled) {
+        document.cookie = "disabled";
+        document.cookie.indexOf("disabled");
+        return console.warn("WARNING: Update check disabled due to cookie restrictions");
+    }
     function fetch(url, method, callback) {
         const http = new XMLHttpRequest();
         http.onreadystatechange = function() {
@@ -107,6 +113,9 @@
         http.send();
         return http;
     }
+    const key = "config.update";
+    let stamps = {};
+    if (!sessionStorage[key + ".urls"]) sessionStorage[key + ".urls"] = JSON.stringify(stamps);
     function update() {
         const url = self.location.href.split("#")[0].split("?")[0];
         const indicator = document.querySelector("a[data-update]");
@@ -118,6 +127,10 @@
             const modified = Date.parse(remote || local) > Date.parse(local);
             const drift = Date.parse(remote || local) - Date.parse(local);
             if (drift < 10000) return;
+            stamps = JSON.parse(sessionStorage[key + ".urls"]);
+            if (stamps[url] === remote) return;
+            stamps[url] = remote;
+            sessionStorage[key + ".urls"] = JSON.stringify(stamps);
             if (remote && modified) {
                 fetch(url, "GET", function() {
                     indicator.href = url.replace(/^https:/, "http:");