import 'dart:math';
import 'package:assets_audio_player/assets_audio_player.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:trackoffical_app/generated/assets.dart';
import 'package:trackoffical_app/global.dart';
import 'package:trackoffical_app/service/app.dart';
import 'package:trackoffical_app/utils.dart';
import '../../model/game_state.dart';
import '../../model/m_control_point.dart';
import '../../model/m_position.dart';
import 'package:sensor/sensor.dart' as sensor;
import '../../model/map_mode.dart';
import '../../widget/matrix_gesture_detector.dart';
import 'package:trackoffical_app/appcore/ffi.dart' as ffi;

class GameModel{

  DateTime? get startAt {
    // final save = gameSrcState.value.pbGameSave;
    // return save.hasStartAt()? save.startAt.toModel(): null;
  }
  DateTime? get endAt {
    // final save = gameSrcState.value.pbGameSave;
    // if(save.hasStopAt()){
    //   if(save.stopAt.seconds==0){
    //     return null;
    //   }
    //   return save.stopAt.toModel();
    // }

    return null;
  }

  final mapTransformMatrix = Matrix4.identity().obs;
  bool get isStarted => startAt != null;
  bool get isFinish => endAt != null;
  final compassDiameter = 160.0.obs;
  final myPositionHistory = <MPosition>[].obs;
  final myPositionHistoryTmp = <MPosition>[];
  final speedMPreS = 0.0.obs;
  final isWalking = false.obs;
  Rx<MPosition?> get myPosition => App.to.position;
  final Rx<Offset?> myPositionOnMap = Rx(null);
  final heartRate = 0.obs;
  final heartRatePercent = 0.0.obs;
  final ei = 0.0.obs;
  final ck = 0.0.obs;
  final kCal = 0.0.obs;
  final exerciseKcal = 0.0.obs;
  final hrMean = 0.obs;
  final hrMax = 0.obs;
  final stepCount = 0.obs;
  /// 指北针弧度，移动时通过GPS判断
  final compassRadiansFused = 0.0.obs;
  final compassRadiansSrc = 0.0.obs;
  final orientation = sensor.Orientation().obs;

  final mapMode = MapMode.compass.obs;
  Offset? mapRotateCenter;
  var isAlwaysShowMyLocation = true;
  var isEnableMyLocation = true;
  /// 用户设置是否锁定旋转中心
  final isLockScreenCenterToMyPosition = false.obs;
  bool get isLockScreenCenterToMyPositionSystem =>
      isLockScreenCenterToMyPosition.value
          && isEnableUserLocation;

  var accelerometerEvent = sensor.Orientation();
  var isMoving = false;
  final Rx<ffi.ZoneType?> zone = Rx(null);
  final _isEnableUserLocation = App.to.userProfile.isEnableUserLocation.val.obs;
  bool get isEnableUserLocation => _isEnableUserLocation.value;
  set isEnableUserLocation(v){
    _isEnableUserLocation.value = v;
    App.to.userProfile.isEnableUserLocation.val =v;
  }

  /// 虚拟点打点有效半径冗余
  static const controlPointEffectiveAreaRadiusKmOffset=0.002;
  /// 虚拟点打点有效半径
  double get controlPointEffectiveAreaRadiusKm => 100;
      // GlobalVar.isGpsTest? 100:
      // gameSrcState.value.pbGameData.vcpRadius.toDouble()/1000
      //     + controlPointEffectiveAreaRadiusKmOffset;

  /// 是否允许在开始点前预览所有点
  bool get isAllowPreviewControlPoint => true; //gameSrcState.value.pbGameData.isPreview;
  /// 是否允许显示地图
  bool get isShowMap => true; //gameSrcState.value.pbGameData.isShowMap;
  /// 是否允许跳点
  bool get isAllowedPassCP => false; //gameSrcState.value.pbGameData.maxPassPoint > 0;
  final trajectoryPoints = <Offset>[].obs;
  /// 用户选项是否显示轨迹
  final isShowTrajectory = true.obs;
  bool get isDrawTrajectory => isShowTrajectory.value && isEnableUserLocation;

  final controlPointWantSequence = <MControlPoint>[].obs;
  final myPositionHistoryLen = 0.meter.obs;

  final gameSrcState = GameState().obs;
  bool get isUseRealNorth => App.to.userProfile.isCompassUseRealNorth.val;
  set isUseRealNorth(v){ App.to.userProfile.isCompassUseRealNorth.val = v; }
  var compassRealNorthOffset = 0.0;
  var deviceSpeed = 0.0;
  // Duration get gameQuestionShowDuration => gameSrcState.value.pbGameData.oiShowTime.seconds;

  Distance get myPositionHistoryLenFromLastCP{
    if(checkedPointsHistory.isEmpty){
      return myPositionHistoryLen.value;
    }
    final cp = checkedPointsHistory.last;
    return myPositionHistoryLen.value - cp.checkDistanceAfterStart;
  }


  Duration get startedDuration{
    final b = startAt;
    if(b!= null){
      return App.to.now.difference(b);
    }
    return 0.seconds;
  }

  final paceSecondKm = 0.seconds.obs;
  final paceSecondKmFromLastCP = 0.seconds.obs;

  final checkedPointsHistory = <MControlPoint>[].obs;

  int get checkedCount {
    var i = 0;
    // for (var one in gameSrcState.value.pbGameSave.checkedSortedList) {
    //   if (one.isCheckSuccess) {
    //     i++;
    //   }
    // }
    return i;
  }
  final Rx<int?> nextPlanPointIndex=Rx(null);

  int get validCPCount{
    var cpChecked = checkedCount;
    if(cpChecked < 0){
      cpChecked = 0;
    }
    return cpChecked;
  }

  // 所有计分点数量
  int get validCPAllNum{
    return controlPointWantSequence.length;
  }
  // 打卡进度
  double get checkProgress {
    if (controlPointWantSequence.isEmpty) {
      return 0;
    }
    return (checkedCount).toDouble() / (controlPointWantSequence.length);
  }
  MControlPoint? getNextWantPoint(int offset){
    final i = checkedCount + offset;
    return controlPointWantSequence.length > i?
    controlPointWantSequence[i] : null;
  }
  MControlPoint? get nextPlanPoint{
    final i = nextPlanPointIndex.value;
    if(i==null){
      return getNextWantPoint(0);
    }

    return controlPointWantSequence.length > i?
    controlPointWantSequence[i] : null;
  }
  set nextPlanPoint(MControlPoint? v){
    if(v==null){
      nextPlanPointIndex.value=null;
      return;
    }

    for(var i=0;i<controlPointWantSequence.length;i++ ){
      if(v.intId==controlPointWantSequence[i].intId){
        if(i < checkedCount){
          return;
        }

        nextPlanPointIndex.value=i;

        AssetsAudioPlayer.newPlayer().open(
          Audio(Assets.soundCpJump),
          autoStart: true,
          showNotification: false
        );


        return;
      }
    }
  }

  bool get isInWantControlPointArea {
    final p = getNextWantPoint(0);
    if(p != null){
      final disKm = nextWantCPDistanceKm;
      if(disKm != null && p.type == MControlPointType.gps){
        return disKm <= controlPointEffectiveAreaRadiusKm.km;
      }
    }
    return false;
  }
  bool get isInPlanControlPointArea {
    final p = nextPlanPoint;
    if(p != null){
      final disKm = nextPlanCPDistanceKm;
      if(disKm != null && p.type == MControlPointType.gps){
        return disKm <= controlPointEffectiveAreaRadiusKm.km;
      }
    }
    return false;
  }



  Distance? get nextWantCPDistanceKm{

    final p1 = myPosition.value;
    final p2 = getNextWantPoint(0)?.position;
    if(p1 != null && p2 != null){
      return  p2.distance(p1);
    }
    return null;
  }
  Distance? get nextPlanCPDistanceKm{

    final p1 = myPosition.value;
    final p2 = nextPlanPoint?.position;
    if(p1 != null && p2 != null){
      return  p2.distance(p1);
    }
    return null;
  }



  double get compassPlantRadian {
    if(mapMode.value == MapMode.compass){
      return compassRadiansFused.value;
    }

    final ogRm = mapTransformMatrix.value.clone();
    double radian = MatrixGestureDetector.decomposeToValues(ogRm).rotation;
    return radian;
  }
  int get compassShowDegrees{
    var d1 = -( compassPlantRadian - compassRadiansFused.value);
    if(mapMode.value == MapMode.compass){
      d1 = -compassPlantRadian;
    }
    var d = d1 *180~/pi;
    while(d < 0){
      d+=360;
    }
    while(d > 360){
      d-=360;
    }
    return d;
  }

  void setRotateCenterToScreenCenter(){
    final screenCenter =
    Offset(App.to.screenSize.width / 2, App.to.screenSize.height / 2);
    mapRotateCenter = screenCenter;
  }

  void clear(){
    gameSrcState.value = GameState();
    myPositionHistory.clear();
    myPositionHistoryTmp.clear();
    checkedPointsHistory.clear();
    controlPointWantSequence.clear();
    myPositionOnMap.value = null;
    heartRate.value = 0;
    heartRatePercent.value = 0;
    ei.value = 0;
    ck.value = 0;
    myPositionHistoryLen.value = 0.meter;
    nextPlanPointIndex.value=null;
  }

}