import 'package:flutter/material.dart';
import 'package:just_audio/just_audio.dart';

/// Lecteur audio inline (play/pause, waveform cliquable, durée), équivalent du
/// lecteur custom de visitapp-web (`ParcoursSection` / `ProgressView`).
class GuidedPathAudioPlayer extends StatefulWidget {
  final String url;
  final Color accentColor;
  final bool isGame;

  const GuidedPathAudioPlayer({
    Key? key,
    required this.url,
    required this.accentColor,
    required this.isGame,
  }) : super(key: key);

  @override
  State<GuidedPathAudioPlayer> createState() => _GuidedPathAudioPlayerState();
}

class _GuidedPathAudioPlayerState extends State<GuidedPathAudioPlayer> {
  final AudioPlayer _player = AudioPlayer();
  Duration _position = Duration.zero;
  Duration _duration = Duration.zero;
  bool _playing = false;

  static const _bars = [4, 8, 13, 10, 16, 11, 7, 14, 9, 5, 12, 8, 10, 15, 7, 11, 13, 6, 14, 9, 5, 12, 10, 7, 13];

  @override
  void initState() {
    super.initState();
    _init();
  }

  Future<void> _init() async {
    try {
      await _player.setUrl(widget.url);
    } catch (_) {}
    _player.durationStream.listen((d) {
      if (d != null && mounted) setState(() => _duration = d);
    });
    _player.positionStream.listen((p) {
      if (mounted) setState(() => _position = p);
    });
    _player.playerStateStream.listen((s) {
      if (!mounted) return;
      if (s.processingState == ProcessingState.completed) {
        _player.pause();
        _player.seek(Duration.zero);
        setState(() => _playing = false);
      } else {
        setState(() => _playing = s.playing);
      }
    });
  }

  @override
  void dispose() {
    _player.dispose();
    super.dispose();
  }

  void _toggle() {
    if (_playing) {
      _player.pause();
    } else {
      _player.play();
    }
  }

  void _seekFraction(double f) {
    if (_duration.inMilliseconds > 0) {
      _player.seek(Duration(milliseconds: (f * _duration.inMilliseconds).round()));
    }
  }

  String _fmt(Duration d) {
    final m = d.inMinutes;
    final s = d.inSeconds % 60;
    return '$m:${s.toString().padLeft(2, '0')}';
  }

  @override
  Widget build(BuildContext context) {
    final isGame = widget.isGame;
    final progress = _duration.inMilliseconds > 0
        ? _position.inMilliseconds / _duration.inMilliseconds
        : 0.0;
    final muted = isGame ? const Color(0xFF8a8068) : const Color(0xFF6B7B86);

    return Container(
      margin: const EdgeInsets.only(bottom: 16),
      decoration: BoxDecoration(
        color: isGame ? Colors.white.withOpacity(0.06) : Colors.white,
        borderRadius: BorderRadius.circular(16),
        border: Border.all(
            color: isGame
                ? const Color(0xFFD4AF37).withOpacity(0.2)
                : const Color(0xFFE8E3DA)),
      ),
      child: Column(
        children: [
          Padding(
            padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 12),
            child: Row(
              children: [
                GestureDetector(
                  onTap: _toggle,
                  child: Container(
                    width: 44,
                    height: 44,
                    decoration: BoxDecoration(
                      shape: BoxShape.circle,
                      color: isGame ? const Color(0xFFD4AF37) : const Color(0xFF1E2A33),
                    ),
                    child: Icon(
                      _playing ? Icons.pause : Icons.play_arrow,
                      color: isGame ? const Color(0xFF1a1305) : Colors.white,
                      size: 22,
                    ),
                  ),
                ),
                const SizedBox(width: 12),
                Expanded(
                  child: LayoutBuilder(
                    builder: (context, constraints) {
                      return GestureDetector(
                        onTapDown: (d) =>
                            _seekFraction((d.localPosition.dx / constraints.maxWidth).clamp(0.0, 1.0)),
                        child: SizedBox(
                          height: 20,
                          child: Row(
                            crossAxisAlignment: CrossAxisAlignment.center,
                            children: [
                              for (int i = 0; i < _bars.length; i++)
                                Expanded(
                                  child: Padding(
                                    padding: const EdgeInsets.symmetric(horizontal: 1),
                                    child: Container(
                                      height: _bars[i].toDouble(),
                                      decoration: BoxDecoration(
                                        borderRadius: BorderRadius.circular(1.5),
                                        color: (i / _bars.length) <= progress
                                            ? widget.accentColor
                                            : const Color(0x33646E78),
                                      ),
                                    ),
                                  ),
                                ),
                            ],
                          ),
                        ),
                      );
                    },
                  ),
                ),
                const SizedBox(width: 12),
                Text(
                  _duration.inMilliseconds > 0 ? _fmt(_duration) : '--:--',
                  style: TextStyle(color: muted, fontSize: 12.5, fontWeight: FontWeight.w600),
                ),
              ],
            ),
          ),
          if (_duration.inMilliseconds > 0)
            ClipRRect(
              borderRadius: const BorderRadius.vertical(bottom: Radius.circular(16)),
              child: LinearProgressIndicator(
                value: progress.clamp(0.0, 1.0),
                minHeight: 3,
                backgroundColor:
                    isGame ? Colors.white.withOpacity(0.06) : const Color(0xFFF0EBE3),
                valueColor: AlwaysStoppedAnimation<Color>(widget.accentColor),
              ),
            ),
        ],
      ),
    );
  }
}