Refactor

frontend/src/scripts/helper/handle-full-screen.ts

@@ -0,0 +1,52 @@
+import { SoundHandler, Sounds } from '../sound-handler';
+
+export const handleFullScreen = (
+  minimizeButton: HTMLElement,
+  maximizeButton: HTMLElement,
+) => {
+  if (!document.fullscreenEnabled) {
+    minimizeButton.style.visibility = 'hidden';
+    maximizeButton.style.visibility = 'hidden';
+    return;
+  }
+
+  const isInFullScreen = (): boolean => document.fullscreenElement !== null;
+
+  const showButtons = () => {
+    minimizeButton.style.visibility = isInFullScreen() ? 'visible' : 'hidden';
+    maximizeButton.style.visibility = isInFullScreen() ? 'hidden' : 'visible';
+  };
+
+  showButtons();
+
+  let currentWindowHeight = innerHeight;
+
+  const followToggle = () => {
+    SoundHandler.play(Sounds.click);
+    showButtons();
+    currentWindowHeight = innerHeight;
+  };
+
+  const triggerToggle = async () => {
+    await (isInFullScreen()
+      ? document.exitFullscreen()
+      : document.body.requestFullscreen());
+    followToggle();
+  };
+
+  addEventListener('keydown', (e) => {
+    if (e.key === 'F11') {
+      triggerToggle();
+      e.preventDefault();
+    }
+  });
+
+  addEventListener('resize', () => {
+    if (isInFullScreen && currentWindowHeight > innerHeight) {
+      followToggle();
+    }
+  });
+
+  maximizeButton.addEventListener('click', triggerToggle);
+  minimizeButton.addEventListener('click', triggerToggle);
+};