static/js/update: Cover looping condition

1 files changed, 18 insertions, 0 deletions

diff --git a/static/js/update.ts b/static/js/update.ts
index aa4ba77..df29f49 100644
--- a/static/js/update.ts
+++ b/static/js/update.ts
@@ -1,4 +1,13 @@
 (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 () {
@@ -16,6 +25,10 @@
   const state = "on";
   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];
 
@@ -37,6 +50,11 @@
         indicator.dataset.update = anchor.dataset.update;
       }
 
+      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:");