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document.addEventListener("keydown", async (e) => {
  // Dynamically updates values safely (e.g. on JVC Vestel 461 and Philips 8)
  const keyCodes = await TitanSDK.deviceInfo.getKeyCodes();

  switch (e.keyCode) {
    case keyCodes.BACK.keyCode:
      e.preventDefault(); // Note: Prevents default browser back behavior and make sure your app is runing your custom logic.

      // If on the main app screen, confirm exit
      if (isUserOnMainScreen()) {
        showExitConfirmation();
      } else {
        // Otherwise, navigate back within the app
        window.history.go(-1);
      }
      break;
    // ... other key cases
  }
}, true);

// This is to use in the "confirm" button of your exit confirmation modal
function exitApp() {
  // Use the Titan OS API if available, otherwise fall back to window.close()
  if (typeof SmartTvA_API !== "undefined" && SmartTvA_API.exit) {
    SmartTvA_API.exit();
  } else {
    window.close();
  }
}

document.addEventListener("keydown", async (e) => {
  const deviceInformation = await TitanSDK.deviceInfo.getDeviceInfo();
  const brand = deviceInformation.Channel?.brand;
  // For full compatibility, handle 8 for Philips and 461 for JVC
  const BACK_KEY_CODE = brand === 'Philips' ? 8 : 461;

  switch (e.keyCode) {
    case BACK_KEY_CODE:
      e.preventDefault(); // Prevents default browser back behavior

      // If on the main app screen, confirm exit
      if (isUserOnMainScreen()) {
        showExitConfirmation();
      } else {
        // Otherwise, navigate back within the app
        window.history.go(-1);
      }
      break;
    // ... other key cases
  }
}, true);

// This is to use in the "confirm" button of your exit confirmation modal
function exitApp() {
  // Use the Titan OS API if available, otherwise fall back to window.close()
  if (typeof SmartTvA_API !== "undefined" && SmartTvA_API.exit) {
    SmartTvA_API.exit();
  } else {
    window.close();
  }
}