import 'package:flutter/material.dart';
import 'package:flutter/scheduler.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:yumi/app_localizations.dart';
import 'package:yumi/ui_kit/components/sc_compontent.dart';
import 'package:yumi/ui_kit/components/text/sc_text.dart';
import 'package:provider/provider.dart';
import 'package:yumi/services/audio/rtm_manager.dart';
import 'package:yumi/ui_kit/widgets/room/room_msg_item.dart';


class RoomAnimationQueueScreen extends StatefulWidget {
  const RoomAnimationQueueScreen({super.key});

  @override
  State<RoomAnimationQueueScreen> createState() =>
      _RoomAnimationQueueScreenState();
}

class _RoomAnimationQueueScreenState extends State<RoomAnimationQueueScreen> {
  final List<AnimationTask> _animationQueue = [];
  bool _isQueueProcessing = false;
  final Map<int, GlobalKey<_RoomEntranceAnimationState>> _animationKeys = {};

  @override
  void initState() {
    super.initState();
    Provider.of<RtmProvider>(context, listen: false).msgUserJoinListener =
        _msgUserJoinListener;
  }

  _msgUserJoinListener(Msg msg) {
    Future.delayed(Duration(milliseconds: 550), () {
      _addToQueue(msg);
    });
  }

  void _addToQueue(Msg msg) {
    setState(() {
      final taskId = DateTime.now().millisecondsSinceEpoch;
      final animationKey = GlobalKey<_RoomEntranceAnimationState>();

      _animationKeys[taskId] = animationKey;

      final task = AnimationTask(
        id: taskId,
        msg: msg,
        onComplete: () {
          if (_animationQueue.isNotEmpty &&
              _animationQueue.first.id == taskId) {
            setState(() {
              _animationQueue.removeAt(0);
              _animationKeys.remove(taskId);
            });

            if (_animationQueue.isNotEmpty) {
              _startNextAnimation();
            } else {
              setState(() => _isQueueProcessing = false);
            }
          }
        },
      );

      _animationQueue.add(task);
    });

    if (!_isQueueProcessing && _animationQueue.isNotEmpty) {
      setState(() => _isQueueProcessing = true);
      _startNextAnimation();
    }
  }

  void _startNextAnimation({int retryCount = 0}) {
    if (_animationQueue.isEmpty) return;

    SchedulerBinding.instance.addPostFrameCallback((_) {
      if (_animationQueue.isNotEmpty) {
        final task = _animationQueue.first;
        final key = _animationKeys[task.id];

        if (key?.currentState != null) {
          key!.currentState!._startAnimation();
        } else if (retryCount < 3) {
          // 有限次重试，避免无限循环
          Future.delayed(const Duration(milliseconds: 50), () {
            _startNextAnimation(retryCount: retryCount + 1);
          });
        } else {
          // 重试多次失败后，跳过当前动画
          print("动画启动失败，跳过当前任务");
          task.onComplete();
        }
      }
    });
  }

  void _clearQueue() {
    setState(() {
      _animationQueue.clear();
      _animationKeys.clear();
      _isQueueProcessing = false;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.all(20.0),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Stack(
            children: [
              if (_animationQueue.isNotEmpty)
                RoomEntranceAnimation(
                  key: _animationKeys[_animationQueue.first.id],
                  msg: _animationQueue.first.msg,
                  onComplete: _animationQueue.first.onComplete,
                ),
            ],
          ),
        ],
      ),
    );
  }
}

class AnimationTask {
  final int id;
  final Msg msg;
  final VoidCallback onComplete;

  AnimationTask({
    required this.id,
    required this.msg,
    required this.onComplete,
  });
}

class RoomEntranceAnimation extends StatefulWidget {
  final VoidCallback onComplete;
  final Msg msg;

  const RoomEntranceAnimation({
    super.key,
    required this.onComplete,
    required this.msg,
  });

  @override
  State<RoomEntranceAnimation> createState() => _RoomEntranceAnimationState();
}

class _RoomEntranceAnimationState extends State<RoomEntranceAnimation>
    with SingleTickerProviderStateMixin {
  late AnimationController _controller;
  late Animation<Offset> _offsetAnimation;
  bool _isAnimating = false;

  @override
  void initState() {
    super.initState();
    _controller = AnimationController(
      duration: const Duration(seconds: 4),
      vsync: this,
    );

    _offsetAnimation = TweenSequence<Offset>([
      TweenSequenceItem(
        tween: Tween<Offset>(
          begin: const Offset(1.0, 0.0),
          end: const Offset(0.0, 0.0),
        ).chain(CurveTween(curve: Curves.easeOut)),
        weight: 40.0,
      ),
      TweenSequenceItem(
        tween: ConstantTween<Offset>(const Offset(0.0, 0.0)),
        weight: 20.0,
      ),
      TweenSequenceItem(
        tween: Tween<Offset>(
          begin: const Offset(0.0, 0.0),
          end: const Offset(-1.0, 0.0),
        ).chain(CurveTween(curve: Curves.easeIn)),
        weight: 40.0,
      ),
    ]).animate(_controller);

    _controller.addStatusListener((status) {
      if (status == AnimationStatus.completed) {
        setState(() => _isAnimating = false);
        widget.onComplete();
      }
    });
  }

  void _startAnimation() {
    if (_isAnimating) return;

    setState(() => _isAnimating = true);
    _controller.reset();
    _controller.forward();
  }

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

  @override
  Widget build(BuildContext context) {
    return SlideTransition(
      position: _offsetAnimation,
      child: Container(
        width: ScreenUtil().screenWidth * 0.8,
        height: 37.w,
        decoration: BoxDecoration(
          image: DecorationImage(
            image: AssetImage(
              getEntranceBg(""),
            ),
            fit: BoxFit.fill,
          ),
        ),
        child: Row(
          textDirection: TextDirection.ltr,
          children: [
            Padding(
              padding: EdgeInsets.all(2.w),
              child: netImage(
                url: widget.msg.user?.userAvatar ?? "",
                width: 28.w,
                height: 28.w,
                shape: BoxShape.circle,
              ),
            ),
            SizedBox(width: 5.w),
            Column(
              mainAxisAlignment: MainAxisAlignment.center,
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                SizedBox(height: 2.w),
                socialchatNickNameText(
                  maxWidth: 150.w,
                  widget.msg.user?.userNickname ?? "",
                  fontSize: 12.sp,
                  type: "",
                  needScroll:
                      (widget.msg.user?.userNickname?.characters.length ?? 0) >
                      15,
                ),
                text(
                  SCAppLocalizations.of(context)!.enterTheRoom,
                  fontSize: 12.sp,
                  lineHeight: 0.9,
                  textColor: Colors.white,
                ),
              ],
            ),
          ],
        ),
      ),
    );
  }

  String getEntranceBg(String type) {
    return "sc_images/room/entrance/sc_icon_room_entrance_no_vip_bg.png";
  }
}