import 'dart:async';
import 'package:grpc/grpc.dart';
import 'package:trackoffical_app/exception/exception.dart';
import 'package:trackoffical_app/logger.dart';
import 'package:trackoffical_app/model.dart';
import 'package:trackoffical_app/service/api.dart';
import 'package:trackoffical_app/service/app.dart';
import 'package:trackoffical_app/service/app_map.dart';
import 'package:trackoffical_app/service/game/game_instance.dart';
import 'package:trackoffical_app/service/image.dart';
import 'package:trackoffical_app/utils.dart';
import 'package:protobuf/protobuf.dart';
import '../../model/game_map.dart';
import '../../model/game_person_data.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:trackoffical_app/pb.dart' as pb;

class GameInstanceGuardian extends GameInstance {
  GameInstanceGuardian({required this.underGuardianId});

  @override
  Future<void> onInit() async {
    if (underGuardianId >= 0) {
      _workWatch();
    } else {
      // 测试
      _gameMapInitState = 'ok';
    }

    await _waitGameMapOk();
    if (!isActive) {
      throw FutureCancel();
    }
    await gameMapData.loadMemory(onReceiveProgress: (int count, int total) {});
    if (!isActive) {
      throw FutureCancel();
    }

    for(var p in gamePersonData){
      await p.initControlPointWantSequence(gameMapData);
    }

    addTimer(100.milliseconds, () {
      for (var one in gamePersonData) {
        final startAt = one.startAt;

        final endAt = one.endAt ?? App.to.now;
        var duration = startAt != null ? endAt.difference(startAt) : 0.seconds;
        one.duration.value = duration;
      }
    });
  }

  void _workWatch() async {
    debug('watch: 开始');
    while (isActive) {
      try {
        _watchStream = ApiService.to.guardianWatch(underGuardianId);
        await for (var msg in _watchStream!.stream) {
          debug('rcv: ${msg.meta.typeUrl}');

          msg.handleType(pb.GetInGameDataReply(), (userId, data) {
            onPersonInit(userId, data);
            onMapInit(data.data);
          });

          msg.handleType(pb.GameGpsUploadRequest(), onGameGpsUploadRequest);
          msg.handleType(pb.GameFinishRequest(), onGameFinish);
          msg.handleType(pb.GameSaveUploadRequest(), onGameSaveUploadRequest);
          msg.handleType(pb.GameHrUploadRequest(), onGameHrUploadRequest);
          msg.handleType(pb.GameCleUploadRequest(), onGameCleUploadRequest);
          msg.handleType(pb.PupilInGameInfoOther(), onPupilInGameInfoOther);
        }
      } on GrpcError catch (e) {
        if (e.code == StatusCode.unavailable) {
          warn('watch: 断线：$e');
          await 3.seconds.delay();
        }else if (e.code == StatusCode.cancelled) {
          break;
        } else {
          warn('watch: GrpcError：$e');
          _gameMapInitState = e;
          break;
        }
      } catch (e) {
        debug('watch: err：$e');
        _gameMapInitState = e;
        break;
      }
    }
    if (Get.currentRoute == '/GuardianWatchGameView') {
      Get.back();
    }
    debug('watch: 结束');
  }

  void onGameSaveUploadRequest(int userId, pb.GameSaveUploadRequest data) {
    final old = _gamePersonDataGetByUserId(userId);
    if (old != null) {
      old.gameSrcState.update((val) {
        val?.pbGameSave = data.gameSave;
      });
      old.cpWantSequenceRefresh(gameMapData);
    }
  }

  void onPersonInit(int userId, pb.GetInGameDataReply data) {
    final old = _gamePersonDataGetByUserId(userId);
    if (old == null) {
      final headImage = data.data.image.toModel();
      final state = data.data.toGameState();
      state.pbGameSave = data.save;
      final person = GamePersonData()
        ..userId = userId
        ..userHead.value = headImage
        ..userName = data.data.name
        ..gameSrcState.value = state;
      headImage.loadMemory().then((value) => person.userHead.update((val) {}));
      gamePersonData.add(person);
      person.initControlPointWantSequence(gameMapData);
    }
  }

  Future<void> onMapInit(pb.GameData data) async {

    if (_gameMapInitState == 'ok') {
      return;
    }
    gameMapData = data.mapZip.toGameMap();
    _gameMapInitState = 'ok';
  }

  void onGameGpsUploadRequest(int userId, pb.GameGpsUploadRequest data) async {
    final p = _gamePersonDataGetByUserId(userId);
    if (p != null) {
      final gpsList = data.gameGpsInfos.map((e) => e.toModel()).toList();
      p.myPositionHistory.addAll(gpsList);
      final onMapList = <Offset>[];
      for (var one in gpsList) {
        onMapList.add(await gameMapData.worldToPixel(one));
      }
      p.myPositionOnMapHistory.addAll(onMapList);
      p.pacePerKm.value = data.pace.seconds;
      p.myPositionHistoryLen.value = data.distance.meter;
    }
  }

  void onGameHrUploadRequest(int userId, pb.GameHrUploadRequest data)async {
    final p = _gamePersonDataGetByUserId(userId);
    if (p != null) {
      if(data.gameHrInfos.isNotEmpty){
        final hr = data.gameHrInfos.last;
        p.heartRate.value = hr.hr;
      }
    }
  }
  void onGameCleUploadRequest(int userId, pb.GameCleUploadRequest data)async {
    final p = _gamePersonDataGetByUserId(userId);
    if (p != null) {
      p.ck.value = data.ck.toDouble();
      p.kCal.value = data.cle.toDouble()/1000;
      p.hrMean.value = data.avgHr;
      p.hrMax.value = data.maxHr;
      p.stepCount.value = data.stepNum;
      p.heartRatePercent.value = data.heartRatePercent.toDouble();
    }
  }
  void onPupilInGameInfoOther(int userId, pb.PupilInGameInfoOther data)async {
    final p = _gamePersonDataGetByUserId(userId);
    if (p != null) {
      p.beanCount.value = data.sysPoint;
    }
  }

  void onGameFinish(int userId, pb.GameFinishRequest data) async {
    _gamePersonDataRemoveByUserId(userId);
  }

  GamePersonData? _gamePersonDataGetByUserId(int userId) {
    for (var one in gamePersonData) {
      if (one.userId == userId) {
        return one;
      }
    }
    return null;
  }

  void _gamePersonDataRemoveByUserId(int userId) {
    var index = -1;
    for (var i = 0; i < gamePersonData.length; i++) {
      if (gamePersonData[i].userId == userId) {
        index = i;
        break;
      }
    }

    if (index >= 0) {
      gamePersonData.removeAt(index);
    }
  }


  Future<void> _waitGameMapOk() async {
    while (isActive && _gameMapInitState == null) {
      await 10.milliseconds.delay();
    }
    if (_gameMapInitState == 'ok') {
      return;
    }

    throw _gameMapInitState;
  }


  @override
  Future<void> onClose() async {
    _watchStream?.stream.cancel();
    _watchStream?.channel.terminate();
  }

  final gamePersonData = <GamePersonData>[].obs;
  var gameMapData = GameMap();

  final int underGuardianId;
  StreamGuardianWatch? _watchStream;
  dynamic _gameMapInitState;
}

extension MsgHandle on pb.PupilInGameWatchReply {
  void handleType<T extends GeneratedMessage>(
      T instance, void Function(int userId, T data) handler) {
    if (meta.canUnpackInto(instance)) {
      final data = meta.unpackInto(instance);
      handler(oId, data);
    }
  }
}