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

import 'package:auto_route/auto_route.dart';
import 'package:flutter/widgets.dart';
import 'package:mnemo_cards/domain/router/dialogs.dart';
import 'package:yandex_mobileads/mobile_ads.dart';

import '../../main.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 Completer? _showingAdCompleter;

  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 (_showingAdCompleter?.isCompleted == false) {
      return false;
    }
    try {
      _showingAdCompleter = Completer();
      if (_preloadedAd == null) {
        // final dialogCompleter = Completer();
        // final dialogFuture =
        //     showErrorDialog('Загрузка...', completer: dialogCompleter);
        try {
          final _loadedAd = await loadRewardedAd().timeout(
            Duration(seconds: 5),
          );
          if (_loadedAd == null) {
            return false;
          }
        } finally {}
        // dialogCompleter.complete();
        // await dialogFuture;
        // final frameCompleter = Completer();
        // WidgetsBinding.instance.addPostFrameCallback((_) {
        //   frameCompleter.complete();
        // });
        // await frameCompleter;
      }
      final _ad = _preloadedAd;
      _preloadedAd = null;
      await _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;
    } finally {
      _showingAdCompleter?.complete();
    }
  }
}