import 'dart:math';

import 'package:flutter/material.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:shelfsdk/audiobookshelf_api.dart';
import 'package:vaani/constants/sizes.dart';
import 'package:vaani/features/player/providers/abs_provider.dart';
import 'package:vaani/features/player/view/player_expanded.dart'
    show PlayerExpandedImage;
import 'package:vaani/features/player/view/player_minimized.dart';
import 'package:vaani/features/player/view/widgets/audiobook_player_seek_button.dart';
import 'package:vaani/features/player/view/widgets/audiobook_player_seek_chapter_button.dart';
import 'package:vaani/features/player/view/widgets/player_player_pause_button.dart';
import 'package:vaani/features/player/view/widgets/player_progress_bar.dart';
import 'package:vaani/features/player/view/widgets/player_speed_adjust_button.dart';
import 'package:vaani/features/skip_start_end/view/skip_start_end_button.dart';
import 'package:vaani/features/sleep_timer/view/sleep_timer_button.dart';
import 'package:vaani/globals.dart';
import 'package:vaani/shared/extensions/chapter.dart';
import 'package:vaani/shared/extensions/duration_format.dart';

var pendingPlayerModals = 0;

class PlayerExpandedDesktop extends HookConsumerWidget {
  const PlayerExpandedDesktop({
    super.key,
  });

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final book = ref.watch(currentBookProvider);
    if (book == null) {
      return SizedBox.shrink();
    }

    /// all the properties that help in building the widget are calculated from the [percentageExpandedPlayer]
    /// however, some properties need to start later than 0% and end before 100%
    final currentChapter = ref.watch(currentChapterProvider);
    // final currentBookMetadata = ref.watch(currentBookMetadataProvider);
    // max height of the player is the height of the screen
    final playerMaxHeight = MediaQuery.of(context).size.height;
    final availWidth = MediaQuery.of(context).size.width;
    // the image width when the player is expanded
    final imageSize = min(playerMaxHeight * 0.5, availWidth * 0.9);

    return Stack(
      alignment: Alignment.bottomCenter,
      children: [
        Scaffold(
          body: Padding(
            padding: EdgeInsets.only(
              top: AppElementSizes.paddingLarge,
              right: AppElementSizes.paddingRegular,
              bottom: playerMinHeight + 40,
            ),
            child: Row(
              children: [
                Expanded(
                  flex: 45,
                  child: Column(
                    children: [
                      Align(
                        alignment: Alignment.topCenter,
                        // add a shadow to the image elevation hovering effect
                        child: PlayerExpandedImage(imageSize),
                      ),
                      _buildControls(imageSize),
                      SizedBox(
                        width: imageSize,
                        child: Padding(
                          padding: EdgeInsets.only(
                            left: AppElementSizes.paddingRegular,
                            right: AppElementSizes.paddingRegular,
                          ),
                          child: const AudiobookChapterProgressBar(),
                        ),
                      ),
                      _buildSettings(imageSize),
                    ],
                  ),
                ),
                Expanded(
                  flex: 65,
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      currentChapter == null
                          ? SizedBox.shrink()
                          : Text(
                              currentChapter.title,
                              style: Theme.of(context).textTheme.titleLarge,
                              maxLines: 1,
                              overflow: TextOverflow.ellipsis,
                            ),
                      Expanded(
                        child: DecoratedBox(
                          decoration: BoxDecoration(
                            border: Border(
                              right: BorderSide(
                                color: Theme.of(context).focusColor,
                                width: 1.0,
                                style: BorderStyle.solid, // 可以设置为 dashed 虚线
                              ),
                            ),
                          ),
                          child: ChapterSelection(),
                        ),
                      ),
                    ],
                  ),
                ),
              ],
            ),
          ),
        ),
        Hero(tag: 'player_hero', child: const PlayerMinimizedControls()),
      ],
    );
  }

  Widget _buildControls(double width) {
    return SizedBox(
      width: width,
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: [
          // previous chapter
          const AudiobookPlayerSeekChapterButton(isForward: false),
          // buttonSkipBackwards
          const AudiobookPlayerSeekButton(isForward: false),
          AudiobookPlayerPlayPauseButton(),
          // // buttonSkipForwards
          const AudiobookPlayerSeekButton(isForward: true),
          // // next chapter
          const AudiobookPlayerSeekChapterButton(isForward: true),
        ],
      ),
    );
  }

  Widget _buildSettings(double width) {
    return SizedBox(
      width: width,
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceEvenly,
        children: [
          // speed control
          const PlayerSpeedAdjustButton(),
          const Spacer(),
          // sleep timer
          const SleepTimerButton(),
          const Spacer(),
          // 跳过片头片尾
          SkipChapterStartEndButton(),
        ],
      ),
    );
  }
}

class ChapterSelection extends HookConsumerWidget {
  const ChapterSelection({super.key});
  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final currentChapter = ref.watch(currentChapterProvider);
    if (currentChapter == null) {
      return SizedBox.shrink();
    }
    final chapters = useState(<BookChapter>[]);
    final scrollController = useScrollController();
    useEffect(
      () {
        int page = 0;
        void load(page) {
          chapters.value.addAll(ref.watch(currentChaptersProvider));
        }

        load(page);
        void listener() {
          if (scrollController.position.pixels /
                  scrollController.position.maxScrollExtent >
              0.8) {
            print('滚动到底部');
          }
        }

        scrollController.addListener(listener);
        return () => scrollController.removeListener(listener);
      },
      [scrollController],
    );

    final currentChapterIndex = chapters.value.indexOf(currentChapter);
    final theme = Theme.of(context);
    return Scrollbar(
      controller: scrollController,
      child: ListView.builder(
        controller: scrollController,
        itemCount: chapters.value.length,
        itemBuilder: (context, index) {
          final chapter = chapters.value[index];
          final isCurrent = currentChapterIndex == index;
          final isPlayed = index < currentChapterIndex;
          return ListTile(
            autofocus: isCurrent,
            iconColor: isPlayed && !isCurrent ? theme.disabledColor : null,
            title: Text(
              chapter.title,
              style: isPlayed && !isCurrent
                  ? TextStyle(color: theme.disabledColor)
                  : null,
            ),
            subtitle: Text(
              '(${chapter.duration.smartBinaryFormat})',
              style: isPlayed && !isCurrent
                  ? TextStyle(color: theme.disabledColor)
                  : null,
            ),
            // trailing: isCurrent
            //     ? const PlayingIndicatorIcon()
            //     : const Icon(Icons.play_arrow),
            selected: isCurrent,
            // key: isCurrent ? chapterKey : null,
            onTap: () {
              ref.read(absPlayerProvider).switchChapter(chapter.id);
            },
          );
        },
      ),
    );
  }
}