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

import 'package:flutter/material.dart';
import 'package:in_app_purchase/in_app_purchase.dart';
import 'package:in_app_purchase_android/in_app_purchase_android.dart';
import 'package:mnemo_cards_common/mnemo_cards_common.dart';
import 'package:url_launcher/url_launcher_string.dart';
import 'package:webview_flutter/webview_flutter.dart';
import '../../di/injector.dart';
import '../../di/locator.dart';
import '../../flags.dart';
import '../../main.dart';
import '../analytics/analytics.dart';
import 'rustore/mnemo_rustore.dart';

enum StoreItemType {
  ads,
  subscription,
  pack,
}

class InAppPurchaseService {
  final InAppPurchase _inAppPurchase = InAppPurchase.instance;
  final Stream<List<PurchaseDetails>> storeSubscription =
      InAppPurchase.instance.purchaseStream;

  InAppPurchase get instance => _inAppPurchase;

  // Future<bool> buySubscription(SubscriptionPlanDto dto) async {
  //   if (dto.paymentSystem == PaymentSystem.yookassa) {
  //     return false;
  //   }
  //
  //   final subscriptionProducts = await _getSubscriptionStoreProduct(dto);
  //   ProductDetails? product;
  //   if (Platform.isAndroid && !RUSTORE_BUILD) {
  //     // final googlePlayProducts = subscriptionProducts.whereType<GooglePlayProductDetails>();
  //     product = subscriptionProducts.firstWhereOrNull(
  //       (p) => p.rawPrice == double.parse(dto.price),
  //     );
  //   } else {
  //     product = subscriptionProducts.first;
  //   }
  //   if (product == null) {
  //     Analytics.buySubscriptionError(
  //       dto,
  //       androidPaymentSystem,
  //       message: 'cant find plan with price ${dto.price}',
  //       data: {
  //         'plans': subscriptionProducts.join(';'),
  //       },
  //     );
  //     return false;
  //   }
  //   final result = await _buySubscriptionInStore(product);
  //   return result;
  // }

  Future<bool> buyPack(CardPackBuyDto dto) async {
    try {
      if (RUSTORE_BUILD) {
        // return RustorePurchaseService().buyPack(dto);
        return false;
      } else {
        final pack = await _getPackStoreProduct(dto);
        final result = await _buyItemInStore(pack.first);
        return result;
      }
    } catch (e, s) {
      log('err', error: e, stackTrace: s);
      Analytics.buyError(
        dto,
        androidPaymentSystem,
        data: {
          'e': e.toString(),
          's': s.toString(),
        },
      );
      return false;
    }
  }

  Future<List<ProductDetails>> _getPackStoreProduct(CardPackBuyDto dto) async {
    final bool isAvailable = await _inAppPurchase.isAvailable();
    if (!isAvailable) {
      Analytics.buyError(
        dto,
        androidPaymentSystem,
        message: 'in app purchase not available',
      );
      return [];
    }
    final ids = {
      if (Platform.isAndroid) RUSTORE_BUILD ? dto.rustoreId : dto.googlePlayId,
      if (Platform.isIOS) dto.appStoreId,
    }.whereNotNull().toSet();
    if (ids.isEmpty) {
      Analytics.buyError(
        dto,
        androidPaymentSystem,
        message: 'product id not set',
      );
      return [];
    }

    final ProductDetailsResponse productDetailResponse =
        await _inAppPurchase.queryProductDetails(ids);

    if (productDetailResponse.error != null ||
        productDetailResponse.productDetails.isEmpty) {
      Analytics.buyError(
        dto,
        androidPaymentSystem,
        data: {
          'msg': 'cant get product details ${productDetailResponse.error}',
          'not_found': productDetailResponse.notFoundIDs.join(','),
        },
      );
      return [];
    }

    return productDetailResponse.productDetails;
  }

  // Future<List<ProductDetails>> _getSubscriptionStoreProduct(
  //   SubscriptionPlanDto dto,
  // ) async {
  //   final bool isAvailable = await _inAppPurchase.isAvailable();
  //   if (!isAvailable) {
  //     Analytics.buySubscriptionError(
  //       dto,
  //       androidPaymentSystem,
  //       message: 'in app purchase not available',
  //     );
  //     return [];
  //   }
  //   final ids = {
  //     if (Platform.isAndroid)
  //       if (RUSTORE_BUILD && dto.paymentSystem == PaymentSystem.rustore)
  //         dto.paymentId,
  //     if (!RUSTORE_BUILD && dto.paymentSystem == PaymentSystem.google)
  //       dto.googlePlaySubscriptionId,
  //     if (dto.paymentSystem == PaymentSystem.yookassa) dto.paymentId,
  //     if (Platform.isIOS && dto.paymentSystem == PaymentSystem.apple)
  //       dto.paymentId,
  //   }.whereNotNull().toSet();
  //   if (ids.isEmpty) {
  //     Analytics.buySubscriptionError(
  //       dto,
  //       androidPaymentSystem,
  //       message: 'product id not set',
  //     );
  //     return [];
  //   }
  //
  //   final productDetailResponse = await _inAppPurchase.queryProductDetails(ids);
  //   if (productDetailResponse.error != null ||
  //       productDetailResponse.productDetails.isEmpty) {
  //     Analytics.buySubscriptionError(
  //       dto,
  //       androidPaymentSystem,
  //       data: {
  //         'msg': 'cant get product details ${productDetailResponse.error}',
  //         'not_found': productDetailResponse.notFoundIDs.join(','),
  //       },
  //     );
  //     return [];
  //   }
  //
  //   return productDetailResponse.productDetails;
  // }

  Future<bool> _buyItemInStore(ProductDetails product) async {
    final PurchaseParam purchaseParam = PurchaseParam(productDetails: product);
    return InAppPurchase.instance.buyConsumable(purchaseParam: purchaseParam);
  }

  Future<bool> _buySubscriptionInStore(ProductDetails product) async {
    final PurchaseParam purchaseParam = PurchaseParam(productDetails: product);
    return InAppPurchase.instance
        .buyNonConsumable(purchaseParam: purchaseParam);
  }

  Future<void> completePurchase(PurchaseDetails purchaseDetails) async {
    await InAppPurchase.instance.completePurchase(purchaseDetails);
  }
}

class PurchaseDetailsStreamSubscription {
  final InAppPurchaseService inAppPurchaseService = getIt.get();

  Future<void> onPurchased(PurchaseDetails purchaseDetails) async {
    try {
      Analytics.buyEvent(
        null,
        androidPaymentSystem,
        message: 'onPurchased',
        data: {
          'status': purchaseDetails.status.name,
          'product': purchaseDetails.productID,
          'date': purchaseDetails.transactionDate,
        },
      );
      final result = await locator.repository.checkPayment(
        product: MnemoCardsProduct(
          id: purchaseDetails.productID,
          type: MnemoCardsProductType.unknown,
        ),
        key: purchaseDetails.verificationData.serverVerificationData,
        paymentSystem: androidPaymentSystem,
      );
      if (result) {
        Analytics.buyComplete(
          null,
          androidPaymentSystem,
          message: purchaseDetails.productID,
        );
        log('Purchased');
      } else {
        Analytics.buyError(
          null,
          PaymentSystem.yookassa,
          message: 'payment not verified ${purchaseDetails.productID}',
        );
        throw Exception('Cant verify purchase');
      }
    } catch (e, s) {
      log(e.toString(), stackTrace: s);
    }
  }

  StreamSubscription<List<PurchaseDetails>>? _streamSubscription;

  PurchaseDetailsStreamSubscription();

  Future<void> init() async {
    _streamSubscription = inAppPurchaseService.storeSubscription.listen(
      (List<PurchaseDetails> events) {
        Future.forEach(
          events,
          (PurchaseDetails purchaseDetails) async {
            if (purchaseDetails.pendingCompletePurchase ||
                purchaseDetails.status == PurchaseStatus.purchased) {
              onPurchased(purchaseDetails);
            }
          },
        );
      },
    );
  }

  void close() {
    _streamSubscription?.cancel();
  }
}