事件与错误

late final StreamSubscription<AdEvent> subscription;

subscription = GromoreAds.events.listen((event) {
  switch (event.type) {
    case AdEventType.rewarded:
      final reward = event.reward;
      if (reward?.verified == true) grantReward(reward!);
    case AdEventType.failed:
      reportAdError(event.error);
    default:
      break;
  }
});

await subscription.cancel();

AdEvent 提供 AdEventType、AdFormat、placementId、requestId、viewId、adId、AdError、AdReward 和 AdEcpmInfo。事件覆盖请求、缓存、渲染、展示、点击、视频、奖励、Dislike、关闭和销毁。

厂商新增的未知 action 不会终止事件流，而是映射为 AdEventType.unknown，原始值保存在 rawAction 与 rawData。

MethodChannel 失败统一转换为 GromoreException：

try {
  await handle.show();
} on GromoreException catch (error) {
  log(error.code, error.subCode, error.message, error.requestId, error.details);
}