import 'dart:async';
import 'dart:developer';

import 'package:flutter/widgets.dart';
import 'package:yandex_mobileads/mobile_ads.dart';

class YandexAds {
  static BannerAd createBanner(
    BoxConstraints constraints, {
    required String id,
    String? key,
    VoidCallback? onLoaded,
  }) {
    return BannerAd(
        adUnitId: id,
        // or 'demo-banner-yandex'
        adSize: BannerAdSize.inline(
          width: constraints.maxWidth.round(),
          maxHeight: constraints.maxHeight.round(),
        ),
        adRequest: const AdRequest(),
        onAdLoaded: () {
          log('Loaded $key');
          onLoaded?.call();
        },
        onAdFailedToLoad: (error) {
          // Ad failed to load with AdRequestError.
          // Attempting to load a new ad from the onAdFailedToLoad() method is strongly discouraged.
        },
        onAdClicked: () {
          // Called when a click is recorded for an ad.
        },
        onLeftApplication: () {
          // Called when user is about to leave application (e.g., to go to the browser), as a result of clicking on the ad.
        },
        onReturnedToApplication: () {
          // Called when user returned to application after click.
        },
        onImpression: (impressionData) {
          // Called when an impression is recorded for an ad.
        });
  }

  static RewardedAd? _preloadedAd;

  static Future<RewardedAd?> loadRewardedAd() async {
    final completer = Completer<RewardedAd?>();
    final _rewardedAdLoader = await RewardedAdLoader.create(
      onAdLoaded: (RewardedAd rewardedAd) {
        _preloadedAd = rewardedAd;
        completer.complete(rewardedAd);
      },
      onAdFailedToLoad: (error) {
        completer.complete(null);
      },
    );
    await _rewardedAdLoader.loadAd(
      adRequestConfiguration: AdRequestConfiguration(
        adUnitId: 'R-M-3761037-1',
      ),
    );
    return completer.future;
  }

  static Future<bool> showRewardedAd(
    Function(Reward reward) onRewarded, {
    maxAttempts = 2,
  }) async {
    if (_preloadedAd == null) {
      final _loadedAd = await loadRewardedAd();
      if (_loadedAd == null) {
        return false;
      }
    }
    final _ad = _preloadedAd;
    _preloadedAd = null;
    _ad?.setAdEventListener(
        eventListener: RewardedAdEventListener(onAdDismissed: () {
      _ad.destroy();
    }, onAdFailedToShow: (e) {
      _ad.destroy();
      if (maxAttempts-- > 0) {
        showRewardedAd(onRewarded, maxAttempts: maxAttempts);
      }
    }, onAdShown: () {
      // _ad.destroy();
    }, onRewarded: (r) {
      onRewarded(r);
      _ad.destroy();
    }));
    await _ad?.show();
    final reward = await _ad?.waitForDismiss();
    return reward != null;
  }
}