import 'package:flutter/material.dart';
import 'package:media_kit/media_kit.dart';
import 'package:media_kit_video/media_kit_video.dart';

import '../../core/config/test_stream.dart';
import '../../core/network/api_exception.dart';
import '../../core/theme/app_theme.dart';
import '../../core/storage/watch_dedup_store.dart';
import '../../models/video_item.dart';
import '../../services/video_service.dart';
import '../feed/widgets/feed_overlays.dart';

/// 单视频播放页（搜索结果/用户主页/作品/收藏/历史共用）：
/// 与 Feed 一致的观看计费（开始播放即上报，按 video_id+日期本地去重），
/// 游客超限 2002 / 积分不足 2001 弹窗逻辑复用 feed_overlays。
class SimplePlayerScreen extends StatefulWidget {
  const SimplePlayerScreen({super.key, required this.item});

  final VideoItem item;

  @override
  State<SimplePlayerScreen> createState() => _SimplePlayerScreenState();
}

class _SimplePlayerScreenState extends State<SimplePlayerScreen> {
  late final Player _player = Player();
  late final VideoController _controller = VideoController(_player);
  bool _playing = true;

  @override
  void initState() {
    super.initState();
    _player.open(Media(resolvePlayUrl(widget.item)));
    _reportWatch();
  }

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

  /// 观看上报（计费）：本地去重后上报，扣费 Toast / 超限弹窗
  Future<void> _reportWatch() async {
    final dedup = WatchDedupStore.I;
    if (dedup.hasWatched(widget.item.videoId)) return;
    await dedup.markWatched(widget.item.videoId);
    try {
      final result = await VideoService.reportWatch(widget.item.videoId);
      if (!mounted) return;
      if (result.isPointsCost) {
        showTopToast(context, '本次消耗 ${result.costPoints} 积分');
      }
    } on ApiException catch (e) {
      if (!mounted) return;
      _player.pause();
      if (e.isGuestLimit) {
        showGuestLimitDialog(context);
      } else if (e.isPointsInsufficient) {
        showPointsInsufficientDialog(
          context,
          (e.data?['points'] as num?)?.toInt() ?? 0,
        );
      } else {
        showTopToast(context, e.message);
      }
    } catch (_) {}
  }

  void _toggle() {
    setState(() => _playing = !_playing);
    _playing ? _player.play() : _player.pause();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.black,
      body: GestureDetector(
        onTap: _toggle,
        child: Stack(
          fit: StackFit.expand,
          children: [
            // 播放器
            Center(
              child: Video(
                controller: _controller,
                controls: NoVideoControls,
                fit: BoxFit.contain,
              ),
            ),
            // 暂停态大播放图标
            if (!_playing)
              const IgnorePointer(
                child: Center(
                  child: Icon(
                    Icons.play_circle_outline,
                    size: 72,
                    color: Colors.white70,
                  ),
                ),
              ),
            // 返回按钮
            const SafeArea(
              child: Align(
                alignment: Alignment.topLeft,
                child: BackButton(color: Colors.white),
              ),
            ),
            // 底部标题/作者
            Positioned(
              left: 12,
              right: 12,
              bottom: 24,
              child: IgnorePointer(
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  mainAxisSize: MainAxisSize.min,
                  children: [
                    Text(
                      '@${widget.item.author.nickname}',
                      style: const TextStyle(
                        fontSize: 15,
                        fontWeight: FontWeight.w600,
                      ),
                    ),
                    const SizedBox(height: 6),
                    Text(
                      widget.item.title,
                      style: const TextStyle(
                        fontSize: 14,
                        color: AppColors.textSecondary,
                      ),
                    ),
                  ],
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }
}