import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:provider/provider.dart';
import 'package:yumi/app/constants/sc_room_msg_type.dart';
import 'package:yumi/services/audio/rtc_manager.dart';
import 'package:yumi/services/audio/rtm_manager.dart';
import 'package:yumi/ui_kit/components/sc_debounce_widget.dart';
import 'package:yumi/ui_kit/widgets/room/music/room_music_floating_entry.dart';
import 'package:yumi/ui_kit/widgets/room/red_packet/room_red_packet_models.dart';
import 'package:yumi/ui_kit/widgets/room/red_packet/room_red_packet_open_dialog.dart';
import 'package:yumi/ui_kit/widgets/room/red_packet/room_red_packet_pending_cache.dart';
import 'package:yumi/ui_kit/widgets/room/room_banner_view.dart';
import 'package:yumi/ui_kit/widgets/room/room_game_bottom_sheet.dart';

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

  @override
  State<RoomPlayWidget> createState() => _RoomPlayWidgetState();
}

class _RoomPlayWidgetState extends State<RoomPlayWidget> {
  @override
  Widget build(BuildContext context) {
    return SizedBox.expand(
      child: Stack(
        children: [
          PositionedDirectional(
            end: 15.w,
            bottom: 150.w,
            child: const RoomMusicFloatingEntry(),
          ),
          PositionedDirectional(
            end: 15.w,
            bottom: 200.w,
            child: const _RoomRedPacketFloatingEntry(),
          ),
          PositionedDirectional(
            end: 15.w,
            bottom: 100.w,
            child: const RoomGameEntryButton(),
          ),
          PositionedDirectional(
            end: 10.w,
            bottom: 15.w,
            child: SizedBox(width: 46.w, child: RoomBannerView()),
          ),
        ],
      ),
    );
  }
}

class _RoomRedPacketFloatingEntry extends StatelessWidget {
  const _RoomRedPacketFloatingEntry();

  @override
  Widget build(BuildContext context) {
    return AnimatedBuilder(
      animation: Listenable.merge([
        RoomRedPacketPendingCache.instance,
        RoomRedPacketOpenDialog.claimedStateNotifier,
      ]),
      builder: (context, child) {
        return Consumer2<RtcProvider, RtmProvider>(
          builder: (context, rtcProvider, rtmProvider, child) {
            final snapshot = _RoomRedPacketEntrySnapshot.fromProviders(
              rtcProvider: rtcProvider,
              rtmProvider: rtmProvider,
            );
            if (snapshot.packets.isEmpty) {
              return const SizedBox.shrink();
            }
            return SCDebounceWidget(
              onTap: () {
                final freshSnapshot = _RoomRedPacketEntrySnapshot.fromProviders(
                  rtcProvider: Provider.of<RtcProvider>(context, listen: false),
                  rtmProvider: Provider.of<RtmProvider>(context, listen: false),
                );
                if (freshSnapshot.packets.isEmpty) {
                  return;
                }
                RoomRedPacketOpenDialog.showList(
                  context,
                  freshSnapshot.packets,
                );
              },
              child: SizedBox(
                width: 44.w,
                height: 44.w,
                child: Stack(
                  clipBehavior: Clip.none,
                  alignment: Alignment.center,
                  children: [
                    Container(
                      width: 42.w,
                      height: 42.w,
                      decoration: BoxDecoration(
                        shape: BoxShape.circle,
                        color: Colors.black.withValues(alpha: 0.22),
                        border: Border.all(
                          color: const Color(0xFFFFD56A),
                          width: 1.3.w,
                        ),
                      ),
                      alignment: Alignment.center,
                      child: Image.asset(
                        'sc_images/room/red_packet/small_packet_icon.png',
                        width: 32.w,
                        height: 32.w,
                        fit: BoxFit.contain,
                        gaplessPlayback: true,
                      ),
                    ),
                    if (snapshot.packets.length > 1)
                      PositionedDirectional(
                        top: -2.w,
                        end: -2.w,
                        child: Container(
                          constraints: BoxConstraints(minWidth: 16.w),
                          height: 16.w,
                          padding: EdgeInsets.symmetric(horizontal: 4.w),
                          alignment: Alignment.center,
                          decoration: BoxDecoration(
                            color: const Color(0xFFFF3D34),
                            borderRadius: BorderRadius.circular(8.w),
                            border: Border.all(color: Colors.white, width: 1.w),
                          ),
                          child: Text(
                            snapshot.packets.length > 99
                                ? '99+'
                                : snapshot.packets.length.toString(),
                            textScaler: TextScaler.noScaling,
                            maxLines: 1,
                            style: TextStyle(
                              color: Colors.white,
                              fontSize: 9.sp,
                              fontWeight: FontWeight.w800,
                              decoration: TextDecoration.none,
                            ),
                          ),
                        ),
                      ),
                  ],
                ),
              ),
            );
          },
        );
      },
    );
  }
}

class _RoomRedPacketEntrySnapshot {
  const _RoomRedPacketEntrySnapshot(this.packets, this.signature);

  factory _RoomRedPacketEntrySnapshot.fromProviders({
    required RtcProvider rtcProvider,
    required RtmProvider rtmProvider,
  }) {
    final packets = <RoomRedPacketUiData>[];
    final currentRoomId =
        rtcProvider.currenRoom?.roomProfile?.roomProfile?.id?.trim() ?? '';
    for (final packet in rtcProvider.redPacketList.map(
      RoomRedPacketUiData.fromListRes,
    )) {
      _addVisiblePacket(packets, packet);
    }
    for (final packet in RoomRedPacketPendingCache.instance.packetsForRoom(
      currentRoomId,
    )) {
      _addVisiblePacket(packets, packet);
    }
    for (final msg in rtmProvider.roomChatMsgList) {
      if (msg.type != SCRoomMsgType.roomRedPacket) {
        continue;
      }
      _addVisiblePacket(
        packets,
        RoomRedPacketUiData.fromMessagePayload(
          payload: msg.msg,
          fallbackUser: msg.user,
        ),
      );
    }
    final signature = packets
        .map(
          (item) =>
              '${item.packetId}|${item.status}|${item.remainCount}|${item.grabbed}|${item.claimedAmount}|${item.claimStartTimeMs}|${item.expireTimeMs}',
        )
        .join(';');
    return _RoomRedPacketEntrySnapshot(packets, signature);
  }

  final List<RoomRedPacketUiData> packets;
  final String signature;

  @override
  bool operator ==(Object other) {
    if (identical(this, other)) {
      return true;
    }
    return other is _RoomRedPacketEntrySnapshot && other.signature == signature;
  }

  @override
  int get hashCode => signature.hashCode;
}

void _addVisiblePacket(
  List<RoomRedPacketUiData> packets,
  RoomRedPacketUiData packet,
) {
  final normalizedPacket = RoomRedPacketOpenDialog.withLocalClaimState(packet);
  if (!_shouldShowRoomRedPacketEntry(normalizedPacket)) {
    return;
  }
  final packetId = normalizedPacket.packetId.trim();
  if (packetId.isNotEmpty &&
      packets.any((item) => item.packetId.trim() == packetId)) {
    return;
  }
  packets.add(normalizedPacket);
}

bool _shouldShowRoomRedPacketEntry(RoomRedPacketUiData item) {
  final normalizedStatus = item.statusDesc.toLowerCase();
  final explicitSoldOut =
      item.status == 2 ||
      normalizedStatus.contains('finish') ||
      normalizedStatus.contains('sold');
  return !item.grabbed && !item.isExpired && !explicitSoldOut;
}