import 'dart:math' as math;
import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:yumi/app_localizations.dart';
import 'package:yumi/app/constants/sc_global_config.dart';
import 'package:yumi/ui_kit/components/sc_compontent.dart';
import 'package:yumi/services/audio/rtc_manager.dart';
import 'package:yumi/ui_kit/widgets/room/room_bottom_widget.dart';
import 'package:provider/provider.dart';
import 'package:yumi/shared/tools/sc_lk_event_bus.dart';
import 'package:yumi/app/routes/sc_fluro_navigator.dart';
import 'package:yumi/shared/business_logic/models/res/join_room_res.dart';
import 'package:yumi/services/gift/gift_animation_manager.dart';
import 'package:yumi/services/gift/gift_system_manager.dart';
import 'package:yumi/services/audio/rtm_manager.dart';
import 'package:yumi/shared/tools/sc_gift_vap_svga_manager.dart';
import 'package:yumi/shared/tools/sc_path_utils.dart';
import 'package:yumi/ui_kit/widgets/room/anim/l_gift_animal_view.dart';
import 'package:yumi/ui_kit/widgets/room/anim/room_gift_seat_flight_overlay.dart';
import 'package:yumi/ui_kit/widgets/room/anim/room_entrance_screen.dart';
import 'package:yumi/ui_kit/widgets/room/anim/room_entrance_widget.dart';
import 'package:yumi/ui_kit/widgets/room/effect/luck_gift_nomor_anim_widget.dart';
import 'package:yumi/ui_kit/widgets/room/room_head_widget.dart';
import 'package:yumi/ui_kit/widgets/room/room_msg_item.dart';
import 'package:yumi/ui_kit/widgets/room/room_online_user_widget.dart';
import 'package:yumi/ui_kit/widgets/room/room_play_widget.dart';
import 'package:yumi/shared/data_sources/models/enum/sc_gift_type.dart';

import '../../ui_kit/components/sc_float_ichart.dart';
import '../../ui_kit/widgets/room/seat/room_seat_widget.dart';
import 'chat/all/all_chat_page.dart';
import 'chat/chat/chat_page.dart';
import 'chat/gift/gift_chat_page.dart';

///语聊房
class VoiceRoomPage extends StatefulWidget {
  const VoiceRoomPage({super.key});

  @override
  State<VoiceRoomPage> createState() => _VoiceRoomPageState();
}

class _VoiceRoomPageState extends State<VoiceRoomPage>
    with SingleTickerProviderStateMixin {
  static const Duration _luckyGiftComboWindow = Duration(seconds: 3);
  static const Duration _luckyGiftQueueDrainWindow = Duration(seconds: 3);
  static const int _maxLuckyGiftTrackedAnimations = 5;
  static const Duration _giftAnimationSessionWindow = _luckyGiftComboWindow;
  static const Duration _giftAnimationQueueDrainWindow =
      _luckyGiftQueueDrainWindow;
  static const int _maxTrackedGiftAnimations = _maxLuckyGiftTrackedAnimations;

  late TabController _tabController;
  final List<Widget> _pages = [AllChatPage(), ChatPage(), GiftChatPage()];
  final List<Widget> _tabs = [];
  late StreamSubscription _subscription;
  final RoomGiftSeatFlightController _giftSeatFlightController =
      RoomGiftSeatFlightController();
  final Map<String, _LuckyGiftComboSession> _luckyGiftComboSessions =
      <String, _LuckyGiftComboSession>{};

  @override
  void initState() {
    super.initState();
    _tabController = TabController(length: _pages.length, vsync: this);
    _enableRoomVisualEffects();
    _tabController.addListener(() {}); // 监听切换

    _subscription = eventBus.on<SCGiveRoomLuckPageDisposeEvent>().listen((
      event,
    ) {
      if (mounted) {
        Provider.of<GiftProvider>(context, listen: false).clearAllGiftData();
        Provider.of<GiftProvider>(
          context,
          listen: false,
        ).toggleGiftAnimationVisibility(false);
        _clearLuckyGiftComboSessions();
        _giftSeatFlightController.clear();
      }
    });
  }

  @override
  void didChangeDependencies() {
    super.didChangeDependencies();
    _ensureRoomVisualEffectsEnabled();
  }

  @override
  void dispose() {
    _suspendRoomVisualEffects();
    _tabController.dispose(); // 释放资源
    _subscription.cancel();
    super.dispose();
  }

  void _enableRoomVisualEffects() {
    Provider.of<RtcProvider>(
      context,
      listen: false,
    ).setRoomVisualEffectsEnabled(true);
    Provider.of<RtmProvider>(context, listen: false).msgFloatingGiftListener =
        _floatingGiftListener;
  }

  void _ensureRoomVisualEffectsEnabled() {
    final rtcProvider = Provider.of<RtcProvider>(context, listen: false);
    if (rtcProvider.currenRoom == null ||
        rtcProvider.roomVisualEffectsEnabled) {
      return;
    }
    _enableRoomVisualEffects();
  }

  void _suspendRoomVisualEffects() {
    final rtcProvider = Provider.of<RtcProvider>(context, listen: false);
    rtcProvider.setRoomVisualEffectsEnabled(false);

    final rtmProvider = Provider.of<RtmProvider>(context, listen: false);
    if (rtmProvider.msgFloatingGiftListener == _floatingGiftListener) {
      rtmProvider.msgFloatingGiftListener = null;
    }

    RoomEntranceHelper.clearQueue();
    _clearLuckyGiftComboSessions();
    _giftSeatFlightController.clear();
    SCGiftVapSvgaManager().stopPlayback();
  }

  bool roomThemeBackActi(JoinRoomRes? room) {
    if (room?.roomProps?.roomTheme != null) {
      if (room?.roomProps?.roomTheme?.themeBack != null &&
          room!.roomProps!.roomTheme!.themeBack!.isNotEmpty) {
        if ((room.roomProps?.roomTheme?.expireTime ?? 0) >
            DateTime.now().millisecondsSinceEpoch) {
          return true;
        }
      }
    }
    return false;
  }

  @override
  Widget build(BuildContext context) {
    _tabs.clear();
    _tabs.add(Tab(text: SCAppLocalizations.of(context)!.all));
    _tabs.add(Tab(text: SCAppLocalizations.of(context)!.chat));
    _tabs.add(Tab(text: SCAppLocalizations.of(context)!.gift));
    return PopScope(
      canPop: false,
      onPopInvokedWithResult: (bool didPop, Object? result) {
        if (!didPop) {
          _suspendRoomVisualEffects();
          SCFloatIchart().show();
          SCNavigatorUtils.goBack(context);
        }
      },
      child: Scaffold(
        backgroundColor:
            SCGlobalConfig.businessLogicStrategy.getVoiceRoomBackgroundColor(),
        resizeToAvoidBottomInset: false,
        body: SafeArea(
          top: false,
          child: Stack(
            children: [
              Consumer<RtcProvider>(
                builder: (context, ref, child) {
                  return roomThemeBackActi(ref.currenRoom)
                      ? netImage(
                        url:
                            ref.currenRoom?.roomProps?.roomTheme?.themeBack ??
                            "",
                        width: ScreenUtil().screenWidth,
                        height: ScreenUtil().screenHeight,
                        noDefaultImg: true,
                        fit: BoxFit.cover,
                      )
                      : Image.asset(
                        SCGlobalConfig.businessLogicStrategy
                            .getVoiceRoomDefaultBackgroundImage(),
                        width: ScreenUtil().screenWidth,
                        height: ScreenUtil().screenHeight,
                        fit: BoxFit.cover,
                      );
                },
              ),
              Column(
                children: [
                  SizedBox(height: ScreenUtil().setWidth(42)),
                  RoomHeadWidget(),
                  SizedBox(height: ScreenUtil().setWidth(5)),
                  RoomOnlineUserWidget(),
                  RoomSeatWidget(),
                  SizedBox(height: 2.w),
                  Expanded(
                    child: Stack(
                      children: [
                        Column(
                          children: [_buildChatView(), RoomBottomWidget()],
                        ),
                        LGiftAnimalPage(),
                        Transform.translate(
                          offset: Offset(0, -20),
                          child: RoomAnimationQueueScreen(),
                        ),
                      ],
                    ),
                  ),
                ],
              ),
              // _buildPlayViews(),
              ///幸运礼物中奖动画
              LuckGiftNomorAnimWidget(),
            ],
          ),
        ),
      ),
    );
  }

  ///消息
  Widget _buildChatView() {
    return Expanded(
      child: Stack(
        alignment: AlignmentDirectional.bottomEnd,
        children: [
          Column(
            children: [
              TabBar(
                tabAlignment: TabAlignment.start,
                labelPadding: SCGlobalConfig.businessLogicStrategy
                    .getVoiceRoomTabLabelPadding()
                    .copyWith(
                      left:
                          SCGlobalConfig.businessLogicStrategy
                              .getVoiceRoomTabLabelPadding()
                              .left *
                          ScreenUtil().setWidth(1),
                      right:
                          SCGlobalConfig.businessLogicStrategy
                              .getVoiceRoomTabLabelPadding()
                              .right *
                          ScreenUtil().setWidth(1),
                    ),
                labelColor:
                    SCGlobalConfig.businessLogicStrategy
                        .getVoiceRoomTabLabelColor(),
                isScrollable: true,
                indicator: BoxDecoration(),
                unselectedLabelColor:
                    SCGlobalConfig.businessLogicStrategy
                        .getVoiceRoomTabUnselectedLabelColor(),
                labelStyle: SCGlobalConfig.businessLogicStrategy
                    .getVoiceRoomTabLabelStyle()
                    .copyWith(
                      fontSize:
                          SCGlobalConfig.businessLogicStrategy
                              .getVoiceRoomTabLabelStyle()
                              .fontSize! *
                          ScreenUtil().setSp(1),
                    ),
                unselectedLabelStyle: SCGlobalConfig.businessLogicStrategy
                    .getVoiceRoomTabUnselectedLabelStyle()
                    .copyWith(
                      fontSize:
                          SCGlobalConfig.businessLogicStrategy
                              .getVoiceRoomTabUnselectedLabelStyle()
                              .fontSize! *
                          ScreenUtil().setSp(1),
                    ),
                indicatorColor:
                    SCGlobalConfig.businessLogicStrategy
                        .getVoiceRoomTabIndicatorColor(),
                dividerColor:
                    SCGlobalConfig.businessLogicStrategy
                        .getVoiceRoomTabDividerColor(),
                controller: _tabController,
                tabs: _tabs,
              ),
              Expanded(
                child: Container(
                  margin: SCGlobalConfig.businessLogicStrategy
                      .getVoiceRoomChatContainerMargin()
                      .copyWith(
                        end:
                            SCGlobalConfig.businessLogicStrategy
                                .getVoiceRoomChatContainerMargin()
                                .end *
                            ScreenUtil().setWidth(1),
                      ),
                  child: MediaQuery.removePadding(
                    context: context,
                    removeTop: true,
                    child: TabBarView(
                      controller: _tabController,
                      children: _pages,
                    ),
                  ),
                ),
              ),
            ],
          ),
          RoomPlayWidget(),
        ],
      ),
    );
  }

  ///礼物上飘动画
  _floatingGiftListener(Msg msg) {
    if (!Provider.of<RtcProvider>(
      context,
      listen: false,
    ).shouldShowRoomVisualEffects) {
      return;
    }
    if (Provider.of<GiftProvider>(context, listen: false).hideLGiftAnimal) {
      return;
    }
    var giftModel = LGiftModel();
    final giftTab = (msg.gift?.giftTab ?? '').trim();
    giftModel.labelId = "${msg.gift?.id}${msg.user?.id}${msg.toUser?.id}";
    giftModel.sendUserName = msg.user?.userNickname ?? "";
    giftModel.sendToUserName = msg.toUser?.userNickname ?? "";
    giftModel.sendUserPic = msg.user?.userAvatar ?? "";
    giftModel.giftPic = msg.gift?.giftPhoto ?? "";
    giftModel.giftCount = msg.number ?? 0;
    giftModel.isLuckyGift =
        giftTab == "LUCK" || giftTab == SCGiftType.LUCKY_GIFT.name;
    Provider.of<GiftAnimationManager>(
      context,
      listen: false,
    ).enqueueGiftAnimation(giftModel);

    final giftPhoto = (msg.gift?.giftPhoto ?? "").trim();
    final targetUserId = _resolveGiftTargetUserId(msg);
    if (_supportsComboMilestoneEffects(msg)) {
      _handleComboMilestoneVisuals(msg, targetUserId);
    }
    final isLuckyGift = _isLuckyGiftMessage(msg);
    if (isLuckyGift) {
      _handleLuckyGiftComboVisuals(msg, giftPhoto, targetUserId);
      return;
    }
    _handleStandardGiftComboVisuals(msg, giftPhoto, targetUserId);
  }

  bool _isLuckyGiftMessage(Msg msg) {
    final giftTab = (msg.gift?.giftTab ?? '').trim();
    return giftTab == "LUCK" || giftTab == SCGiftType.LUCKY_GIFT.name;
  }

  bool _supportsComboMilestoneEffects(Msg msg) {
    return SocialChatGiftSystemManager.supportsComboMilestoneEffects(msg.gift);
  }

  bool _shouldPlayComboMilestoneEffect(Msg msg) {
    if (!_supportsComboMilestoneEffects(msg)) {
      return false;
    }
    return SCGlobalConfig.isLuckGiftSpecialEffects;
  }

  void _handleComboMilestoneVisuals(Msg msg, String? targetUserId) {
    final quantity = (msg.number ?? 0).floor();
    if (quantity <= 0) {
      return;
    }

    final sessionKey = _buildLuckyGiftComboSessionKey(msg, targetUserId);
    final session = _luckyGiftComboSessions.putIfAbsent(
      sessionKey,
      () => _LuckyGiftComboSession(),
    );
    session.endTimer?.cancel();
    session.clearQueueTimer?.cancel();
    session.totalCount += quantity;

    final highestMilestone =
        SocialChatGiftSystemManager.resolveHighestReachedComboMilestone(
          session.totalCount,
        );
    if (highestMilestone != null &&
        highestMilestone > session.highestPlayedMilestone &&
        _shouldPlayComboMilestoneEffect(msg)) {
      final effectPath =
          SocialChatGiftSystemManager.resolveComboMilestoneEffectPath(
            highestMilestone,
          );
      if (effectPath != null && effectPath.isNotEmpty) {
        SCGiftVapSvgaManager().play(effectPath, priority: 200);
        session.highestPlayedMilestone = highestMilestone;
      }
    }
  }

  void _handleStandardGiftComboVisuals(
    Msg msg,
    String giftPhoto,
    String? targetUserId,
  ) {
    if ((msg.number ?? 0) <= 0) {
      return;
    }
    if (!_shouldPlaySeatFlightGiftAnimation(msg) ||
        targetUserId == null ||
        giftPhoto.isEmpty) {
      return;
    }
    final sessionKey = _buildLuckyGiftComboSessionKey(msg, targetUserId);
    final session = _luckyGiftComboSessions.putIfAbsent(
      sessionKey,
      () => _LuckyGiftComboSession(),
    );
    session.endTimer?.cancel();
    session.clearQueueTimer?.cancel();

    _enqueueTrackedSeatFlightAnimations(
      sessionKey: sessionKey,
      giftPhoto: giftPhoto,
      targetUserId: targetUserId,
      animationCount: _resolveTrackedAnimationCount(msg),
    );

    _scheduleGiftAnimationSessionEnd(sessionKey);
  }

  void _handleLuckyGiftComboVisuals(
    Msg msg,
    String giftPhoto,
    String? targetUserId,
  ) {
    if ((msg.number ?? 0) <= 0) {
      return;
    }
    final sessionKey = _buildLuckyGiftComboSessionKey(msg, targetUserId);
    final session = _luckyGiftComboSessions[sessionKey];
    if (session == null) {
      return;
    }
    session.endTimer?.cancel();
    session.clearQueueTimer?.cancel();

    if (_shouldPlaySeatFlightGiftAnimation(msg) &&
        targetUserId != null &&
        giftPhoto.isNotEmpty) {
      _enqueueTrackedSeatFlightAnimations(
        sessionKey: sessionKey,
        giftPhoto: giftPhoto,
        targetUserId: targetUserId,
        animationCount: _resolveTrackedAnimationCount(msg),
      );
    }
    _scheduleGiftAnimationSessionEnd(sessionKey);
  }

  int _resolveTrackedAnimationCount(Msg msg) {
    return math.max(msg.customAnimationCount ?? 1, 1);
  }

  void _enqueueTrackedSeatFlightAnimations({
    required String sessionKey,
    required String giftPhoto,
    required String targetUserId,
    required int animationCount,
  }) {
    final normalizedAnimationCount = math.max(animationCount, 1);
    final cappedAnimationCount = math.min(
      normalizedAnimationCount,
      _maxTrackedGiftAnimations,
    );
    for (var index = 0; index < cappedAnimationCount; index += 1) {
      _giftSeatFlightController.enqueueLimited(
        RoomGiftSeatFlightRequest(
          imagePath: giftPhoto,
          targetUserId: targetUserId,
          beginSize: 96.w,
          endSize: 28.w,
          queueTag: sessionKey,
        ),
        maxTrackedRequests: _maxTrackedGiftAnimations,
      );
    }
  }

  void _scheduleGiftAnimationSessionEnd(String sessionKey) {
    final session = _luckyGiftComboSessions[sessionKey];
    if (session == null) {
      return;
    }
    session.endTimer?.cancel();
    session.endTimer = Timer(_giftAnimationSessionWindow, () {
      if (!mounted) {
        return;
      }
      final activeSession = _luckyGiftComboSessions[sessionKey];
      if (activeSession == null) {
        return;
      }
      if (!_giftSeatFlightController.hasTrackedRequests(sessionKey)) {
        activeSession.dispose();
        _luckyGiftComboSessions.remove(sessionKey);
        return;
      }
      activeSession.clearQueueTimer?.cancel();
      activeSession.clearQueueTimer = Timer(_giftAnimationQueueDrainWindow, () {
        _giftSeatFlightController.clearQueuedRequests(sessionKey);
        final expiredSession = _luckyGiftComboSessions.remove(sessionKey);
        expiredSession?.dispose();
      });
    });
  }

  String _buildLuckyGiftComboSessionKey(Msg msg, String? targetUserId) {
    final senderId = (msg.user?.id ?? '').trim();
    final giftId = (msg.gift?.id ?? '').trim();
    return '$giftId|$senderId|${targetUserId ?? ""}';
  }

  void _clearLuckyGiftComboSessions() {
    for (final session in _luckyGiftComboSessions.values) {
      session.dispose();
    }
    _luckyGiftComboSessions.clear();
  }

  bool _shouldPlaySeatFlightGiftAnimation(Msg msg) {
    final gift = msg.gift;
    if (gift == null) {
      return false;
    }

    final giftPhoto = (gift.giftPhoto ?? "").trim();
    if (giftPhoto.isEmpty) {
      return false;
    }
    final giftPhotoExt = _normalizedGiftResourceExtension(giftPhoto);
    if (_isAnimatedGiftResource(giftPhotoExt)) {
      return false;
    }

    final giftSourceUrl = (gift.giftSourceUrl ?? "").trim();
    final sourceExt = _normalizedGiftResourceExtension(giftSourceUrl);
    return !_isAnimatedGiftResource(sourceExt);
  }

  bool _isAnimatedGiftResource(String extension) {
    return extension == ".svga" || extension == ".mp4" || extension == ".vap";
  }

  String _normalizedGiftResourceExtension(String resource) {
    final value = resource.trim();
    if (value.isEmpty) {
      return "";
    }

    final uri = Uri.tryParse(value);
    if (uri != null && ((uri.scheme.isNotEmpty) || (uri.host.isNotEmpty))) {
      return SCPathUtils.getFileExtension(uri.path).toLowerCase();
    }

    final normalizedValue = value.split("?").first.split("#").first;
    return SCPathUtils.getFileExtension(normalizedValue).toLowerCase();
  }

  String? _resolveGiftTargetUserId(Msg msg) {
    final directUserId = (msg.toUser?.id ?? "").trim();
    if (directUserId.isNotEmpty) {
      return directUserId;
    }

    final targetAccount = (msg.toUser?.account ?? "").trim();
    if (targetAccount.isEmpty) {
      return null;
    }

    final rtcProvider = Provider.of<RtcProvider>(context, listen: false);
    for (final micRes in rtcProvider.roomWheatMap.values) {
      if ((micRes.user?.account ?? "").trim() == targetAccount) {
        final userId = (micRes.user?.id ?? "").trim();
        if (userId.isNotEmpty) {
          return userId;
        }
      }
    }
    return null;
  }
}

class _LuckyGiftComboSession {
  Timer? endTimer;
  Timer? clearQueueTimer;
  int totalCount = 0;
  int highestPlayedMilestone = 0;

  void dispose() {
    endTimer?.cancel();
    clearQueueTimer?.cancel();
  }
}