// Author: fruit.com.cn

part of 'player_overlay.dart';

/// 顶部按钮：直接压在画面上，不加底色，靠文字/图标阴影保证可读性。
class _TopButton extends StatelessWidget {
  const _TopButton({
    super.key,
    required this.tooltip,
    required this.icon,
    required this.onPressed,
    this.iconSize = 22,
  });

  final String tooltip;
  final IconData icon;
  final VoidCallback onPressed;
  final double iconSize;

  @override
  Widget build(BuildContext context) {
    return SizedBox.square(
      dimension: _topButtonSize,
      child: IconButton(
        tooltip: tooltip,
        padding: EdgeInsets.zero,
        style: IconButton.styleFrom(
          backgroundColor: AppColors.transparent,
          foregroundColor: AppColors.onPrimary,
        ),
        onPressed: onPressed,
        icon: Icon(icon, size: iconSize, shadows: _playerTextShadows),
      ),
    );
  }
}

class _SpeedEntry extends StatelessWidget {
  const _SpeedEntry({super.key, required this.speed, required this.onTap});

  final double speed;
  final VoidCallback onTap;

  @override
  Widget build(BuildContext context) {
    return Material(
      color: AppColors.transparent,
      borderRadius: BorderRadius.circular(999),
      child: InkWell(
        onTap: onTap,
        borderRadius: BorderRadius.circular(999),
        child: Padding(
          padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 7),
          child: Row(
            mainAxisSize: MainAxisSize.min,
            children: [
              const Icon(
                Icons.speed_rounded,
                color: AppColors.onPrimary,
                size: 15,
                shadows: _playerTextShadows,
              ),
              const SizedBox(width: 4),
              Text(
                '${speed}x',
                style: const TextStyle(
                  color: AppColors.onPrimary,
                  fontSize: 12,
                  fontWeight: FontWeight.w700,
                  shadows: _playerTextShadows,
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}

class _BottomIconButton extends StatelessWidget {
  const _BottomIconButton({
    super.key,
    required this.tooltip,
    required this.icon,
    required this.onPressed,
    this.height = 40,
  });

  final String tooltip;
  final IconData icon;
  final VoidCallback onPressed;

  /// 与左侧选集条等高，两个控件底部齐平。
  final double height;

  @override
  Widget build(BuildContext context) {
    return SizedBox(
      width: 40,
      height: height,
      child: IconButton(
        tooltip: tooltip,
        padding: EdgeInsets.zero,
        style: IconButton.styleFrom(
          backgroundColor: AppColors.transparent,
          foregroundColor: AppColors.onPrimary,
        ),
        onPressed: onPressed,
        icon: Icon(icon, size: 24, shadows: _playerTextShadows),
      ),
    );
  }
}

class _EpisodeSynopsis extends StatefulWidget {
  const _EpisodeSynopsis({
    super.key,
    required this.l10n,
    required this.drama,
    required this.synopsis,
    required this.authorNote,
  });

  final AppLocalizations l10n;
  final Drama drama;
  final String synopsis;
  final String authorNote;

  @override
  State<_EpisodeSynopsis> createState() => _EpisodeSynopsisState();
}

class _EpisodeSynopsisState extends State<_EpisodeSynopsis> {
  String? _fullSynopsis;
  int _detailRequest = 0;
  bool _detailRequested = false;

  static const int _authorNoteLines = 2;
  static const double _authorNoteGap = 4;
  static const double _authorNoteFont = 10;

  String get _synopsis => _fullSynopsis ?? widget.synopsis;

  @override
  void didChangeDependencies() {
    super.didChangeDependencies();
    if (_detailRequested || widget.drama.detailLoaded) return;
    _detailRequested = true;
    unawaited(_loadFullSynopsis());
  }

  @override
  void didUpdateWidget(covariant _EpisodeSynopsis oldWidget) {
    super.didUpdateWidget(oldWidget);
    if (oldWidget.drama.id == widget.drama.id &&
        oldWidget.synopsis == widget.synopsis) {
      return;
    }
    _fullSynopsis = null;
    _detailRequested = !widget.drama.detailLoaded;
    if (_detailRequested) unawaited(_loadFullSynopsis());
  }

  Future<void> _loadFullSynopsis() async {
    if (widget.drama.detailLoaded) return;
    final request = ++_detailRequest;
    final CatalogController catalog;
    try {
      catalog = context.read<CatalogController>();
    } catch (_) {
      return;
    }
    try {
      final detail = await catalog.requireDetail(widget.drama);
      if (!mounted || request != _detailRequest) return;
      final full = localizedDramaSynopsis(widget.l10n, detail);
      if (full == widget.synopsis) return;
      setState(() => _fullSynopsis = full);
    } catch (_) {
      // 详情失败时继续用列表里的简介。
    }
  }

  @override
  Widget build(BuildContext context) {
    return ExpandableSynopsis(
      key: ValueKey(widget.drama.id),
      keyPrefix: 'player',
      synopsis: _synopsis,
      expandedFooter: widget.authorNote.isEmpty ? null : _authorNote(),
    );
  }

  Widget _authorNote() => Padding(
    padding: const EdgeInsets.only(top: _authorNoteGap),
    child: Text(
      widget.authorNote,
      key: const Key('player-author-note'),
      maxLines: _authorNoteLines,
      overflow: TextOverflow.ellipsis,
      style: const TextStyle(
        color: AppColors.playerMuted,
        fontSize: _authorNoteFont,
        shadows: _playerTextShadows,
      ),
    ),
  );
}