import 'dart:math';

import 'package:auto_route/auto_route.dart';
import 'package:dio/dio.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:mnemo_cards/features/packs/images_holder.dart';
import 'package:mnemo_cards/flags.dart';
import 'package:mnemo_cards/utils/color_helper.dart';
import 'package:mnemo_cards/utils/string_helper.dart';
import 'package:mnemo_cards_common/mnemo_cards_common.dart';
import 'package:rxdart/rxdart.dart';

import '../../admin/add_card.dart';
import '../../di/locator.dart';
import '../../domain/router/app_router.dart';
import '../../features/card_flipper/flip_card_controllers.dart';
import '../../features/card_swiper/src/allowed_swipe_direction.dart';
import '../../features/card_swiper/src/card_swiper.dart';
import '../../features/card_swiper/src/card_swiper_controller.dart';
import '../../main.dart';
import '../game_card_widget.dart';

class CardGameMainWidget extends StatelessWidget {
  final CardPackDto cardPack;
  final int? startCardId;
  final CardSwiperController cardSwiperController;
  final FlipCardController flipCardController;
  final int length;

  const CardGameMainWidget(
    this.cardPack,
    this.startCardId,
    this.cardSwiperController,
    this.flipCardController,
    this.length,
  );

  @override
  Widget build(BuildContext context) {
    final numberOfCardsDisplayed = min(2, cardPack.cards.length);
    final initialScale = 0.9;
    int lastThreshold = 0;
    List<GameCardDto> cards = cardPack.cards;
    if (startCardId != null) {
      final startCardIndex = cards.indexWhere(
        (card) => card.id == startCardId,
      );
      if (startCardIndex >= 0) {
        cards = [
          ...cards.sublist(startCardIndex),
          ...cards.sublist(0, startCardIndex),
        ];
      }
    } else {
      cards = cards.toList()..shuffle();
    }
    GameCardDto? activeCard() => cardSwiperController.currentIndex >= 0
        ? cards[cardSwiperController.currentIndex % cards.length]
        : null;

    return PopScope(
      canPop: false,
      onPopInvoked: (v) {
        if (!v) {
          appRouter.popForced(activeCard()?.id);
        }
      },
      child: Material(
        type: MaterialType.transparency,
        child: LayoutBuilder(builder: (context, constraints) {
          final cardWidth = constraints.maxWidth;
          final cardHeight = cardWidth;
          bool enabled = true;
          return StatefulBuilder(builder: (context, setState) {
            return Stack(
              children: [
                _EndWidget(cardSwiperController, flipCardController, () {
                  setState(() {
                    enabled = false;
                  });
                  AutoRouter.of(context).maybePop();
                }),
                if (enabled)
                  Hero(
                    tag: activeCard()?.id ?? 'empty',
                    child: StreamBuilder<bool>(
                        stream: cardSwiperController.asStream
                            .map((index) => /*cards[index].isAd*/ false)
                            .pairwise()
                            .asyncMap((pair) async {
                          if (pair.first) {
                            await Future.delayed(Duration(seconds: 5));
                            return false;
                          }
                          return pair.last;
                        }).timeout(Duration(seconds: 5),
                                onTimeout: (_) => false),
                        builder: (context, snapshot) {
                          return AbsorbPointer(
                            absorbing: snapshot.data ?? false,
                            child: CardSwiper(
                              controller: cardSwiperController,
                              padding: const EdgeInsets.symmetric(
                                vertical: 0.0,
                                horizontal: 0.0,
                              ),
                              cardsCount: length,
                              numberOfCardsDisplayed: numberOfCardsDisplayed,
                              allowedSwipeDirection:
                                  AllowedSwipeDirection.symmetric(
                                horizontal: true,
                              ),
                              scale: initialScale,
                              backCardOffset: Offset(0, cardHeight * 0.1 / 2),
                              isLoop: false,
                              cardBuilder: (
                                context,
                                cardIndex,
                                percentThresholdX,
                                percentThresholdY,
                                scale,
                              ) {
                                final index = cardIndex % cards.length;
                                final isFirstCard =
                                    (cardSwiperController.currentIndex ==
                                        cardIndex);
                                if (cardSwiperController.currentIndex ==
                                    index) {
                                  lastThreshold = percentThresholdX;
                                }
                                print('${cards[index].translation} $scale');
                                final cardWidget = Center(
                                  child: GameCardWidget(
                                    cards[index],
                                    cards[index].id.memoryImage,
                                    flipCardController,
                                    flipCardController.state
                                    // || cards[index].isAd
                                    ,
                                    isFirstCard,
                                    isFirstCard
                                        ? cardPack.color?.asColor
                                        : cardPack.color?.asColor?.darken(
                                            (scale - 1) /
                                                (initialScale - 1) *
                                                0.075,
                                          ),
                                  ),
                                );
                                return cardWidget;
                              },
                            ),
                          );
                        }),
                  ),
              ],
            );
          });
        }),
      ),
    );
  }
}

class _EndWidget extends StatelessWidget {
  final CardSwiperController cardSwiperController;
  final FlipCardController flipCardController;
  final VoidCallback callback;

  _EndWidget(
    this.cardSwiperController,
    this.flipCardController,
    this.callback,
  );

  @override
  Widget build(BuildContext context) {
    return Center(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          Text('Ok: ${cardSwiperController.swipedLeftIds.length}'),
          Text('Repeat: ${cardSwiperController.swipedRightIds.length}'),
          MaterialButton(
            onPressed: () {
              cardSwiperController.restart();
            },
            child: Text('restart'),
          ),
          MaterialButton(
            onPressed: () {
              callback();
            },
            child: Text('to pack'),
          ),
        ],
      ),
    );
  }
}