add updating check

preload/preload.js

@@ -6,7 +6,6 @@ window.addEventListener('DOMContentLoaded', () => {
     titlebar = new Titlebar({
         backgroundColor: Color.fromHex("#303030"),
         itemBackgroundColor: Color.fromHex("#121212"),
-        icon: "https://ez-pp.farm/static/logos/circle.png",
         menu: null,
         maximizable: false
     });
@@ -20,9 +19,22 @@ window.addEventListener('DOMContentLoaded', () => {
         if (success == undefined)
             return;
         if (success) {
-
+            //TODO: Alert User, folder set.
         } else {
             //TODO: Alert User, invalid osu folder selected
         }
     });
+
+    ipcRenderer.on('status_update', (event, status) => {
+        switch (status.type) {
+            case "up-to-date":
+                $("#launch-btn").attr('disabled', false);
+                $('#launch-btn').html('Launch');
+                break;
+            case "update-available":
+                $("#launch-btn").attr('disabled', false);
+                $('#launch-btn').html('Update');
+                break;
+        }
+    })
 })