[Splash] Rewrite state handling to use switch and have more parity with original

src/splash/index.html

@@ -113,16 +113,22 @@
 
   DiscordSplash.signalReady();
 
-  const outOfStates = [ 'downloading-updates', 'installing-updates' ];
-  const retryStates = [ 'update-failure' ];
   DiscordSplash.onStateUpdate(({ status, current, total, progress, seconds }) => {
-    let text = status.replaceAll('-', ' ') + '...';
+    let text = status.replaceAll('-', ' ');
 
-    if (outOfStates.includes(status)) { // X out of Y states
-      text = text.slice(0, -4) + ` ${current} of ${total}`; // Remove "s..." and concat
-    }
-    if (retryStates.includes(status)) { // Retrying in X states
-      text = text.slice(0, -3) + ` - Retrying in ${seconds}`; // Remove "..." and concat
+    switch (status) {
+      case 'downloading-updates': // X of Y states
+      case 'installing-updates':
+        text = text.slice(0, -1) + ` ${current} of ${total}`; // Remove "s" and concat
+        break;
+
+      case 'update-failure': // Custom for update failure, include retry and reorder text
+        text = `Update Failed - Retrying in ${seconds}`;
+        break;
+
+      case 'launching':
+        text = 'Starting...';
+        break;
     }
 
     text.textContent = text;