import 'dart:math';

import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:vaani/constants/sizes.dart';
import 'package:vaani/features/player/providers/session_provider.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/skip_start_end/player_skip_chapter_start_end.dart';
import 'package:vaani/features/sleep_timer/view/sleep_timer_button.dart';
import 'package:vaani/shared/widgets/not_implemented.dart';
import 'package:vaani/shared/widgets/shelves/book_shelf.dart';

import 'widgets/audiobook_player_seek_button.dart';
import 'widgets/audiobook_player_seek_chapter_button.dart';
import 'widgets/chapter_selection_button.dart';
import 'widgets/player_speed_adjust_button.dart';

var pendingPlayerModals = 0;

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

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final session = ref.watch(sessionProvider).session;
    if (session == 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 Scaffold(
      appBar: AppBar(
        leading: IconButton(
          iconSize: 30,
          icon: const Icon(Icons.keyboard_arrow_down),
          onPressed: () => context.pop(),
        ),
        actions: [
          IconButton(
            icon: const Icon(Icons.cast),
            onPressed: () {
              showNotImplementedToast(context);
            },
          ),
        ],
      ),
      body: Column(
        children: [
          // sized box for system status bar; not needed as not full screen
          SizedBox(
            height: MediaQuery.of(context).padding.top,
          ),

          // the image
          Padding(
            padding: EdgeInsets.only(top: AppElementSizes.paddingLarge),
            child: Align(
              alignment: Alignment.center,
              // add a shadow to the image elevation hovering effect
              child: Container(
                decoration: BoxDecoration(
                  boxShadow: [
                    BoxShadow(
                      color: Theme.of(context)
                          .colorScheme
                          .primary
                          .withValues(alpha: 0.1),
                      blurRadius: 32,
                      spreadRadius: 8,
                    ),
                  ],
                ),
                child: SizedBox(
                  height: imageSize,
                  child: InkWell(
                    onTap: () {},
                    child: ClipRRect(
                      borderRadius: BorderRadius.circular(
                        AppElementSizes.borderRadiusRegular,
                      ),
                      child: BookCoverWidget(),
                    ),
                  ),
                ),
              ),
            ),
          ),

          // the chapter title
          Expanded(
            child: Padding(
              padding: EdgeInsets.only(top: AppElementSizes.paddingRegular),
              child: currentChapter == null
                  ? const SizedBox()
                  : Text(
                      currentChapter.title,
                      style: Theme.of(context).textTheme.titleLarge,
                      maxLines: 1,
                      overflow: TextOverflow.ellipsis,
                    ),
            ),
          ),

          // the book name and author
          Expanded(
            child: Padding(
              padding: EdgeInsets.only(bottom: AppElementSizes.paddingRegular),
              child: Text(
                [
                  session.displayTitle,
                  session.displayAuthor,
                ].join(' - '),
                style: Theme.of(context).textTheme.titleMedium?.copyWith(
                      color: Theme.of(context)
                          .colorScheme
                          .onSurface
                          .withValues(alpha: 0.7),
                    ),
                maxLines: 1,
                overflow: TextOverflow.ellipsis,
              ),
            ),
          ),

          // the progress bar
          Expanded(
            child: SizedBox(
              width: imageSize,
              child: Padding(
                padding: EdgeInsets.only(
                  left: AppElementSizes.paddingRegular,
                  right: AppElementSizes.paddingRegular,
                ),
                child: const AudiobookChapterProgressBar(),
              ),
            ),
          ),

          Expanded(
            child: SizedBox(
              width: imageSize,
              child: Padding(
                padding: EdgeInsets.only(
                  left: AppElementSizes.paddingRegular,
                  right: AppElementSizes.paddingRegular,
                ),
                child: const AudiobookProgressBar(),
              ),
            ),
          ),

          // the chapter skip buttons, seek 30 seconds back and forward, and play/pause button
          Expanded(
            flex: 2,
            child: SizedBox(
              width: imageSize,
              height: AppElementSizes.iconSizeRegular,
              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),
                ],
              ),
            ),
          ),

          // speed control, sleep timer, chapter list, and settings
          Expanded(
            child: SizedBox(
              width: imageSize,
              child: Row(
                mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                children: [
                  // speed control
                  const PlayerSpeedAdjustButton(),
                  const Spacer(),
                  // sleep timer
                  const SleepTimerButton(),
                  const Spacer(),
                  // chapter list
                  const ChapterSelectionButton(),
                  const Spacer(),
                  // 跳过片头片尾
                  SkipChapterStartEndButton(),
                ],
              ),
            ),
          ),
        ],
      ),
    );
  }
}