little fixes

main.js

@@ -17,4 +17,28 @@ var sidebar = new Sidebar(create_game_container, setting_container, control_cont
 window.addEventListener("resize", function() {
     var tilesize = getComputedStyle(document.body).getPropertyValue("--tile-size");
     grid.on_screen_orientation_change(tilesize, tilesize);
-})
+});
+
+window.addEventListener('notificationclick', function(event) {
+    event.waitUntil(async function() {
+        const allClients = await clients.matchAll({
+            includeUncontrolled: true
+        });
+
+        var instance = None;
+
+
+        // Let's see if we already have a window open:
+        for (const client of allClients) {
+            client.focus();
+            instance = client;
+            break;
+        }
+
+        // If we didn't find an existing window,
+        // open a new one:
+        if (!instance) {
+            instance = await clients.openWindow(rel_home);
+        }
+    }());
+});

settings.js

@@ -1,2 +1,4 @@
+var home = "https://the-cake-is-a-lie.net/website/ultimate_tictactoe/";
+var rel_home = "/website/ultimate_tictactoe";
 var server_url = "the-cake-is-a-lie.net";
 var server_port = "5555";