import 'dart:async';
import 'package:get/get.dart';
import 'package:grpc/grpc.dart';
import 'package:trackoffical_app/service/api.dart';
import 'package:trackoffical_app/service/app.dart';
import 'package:trackoffical_app/utils.dart';
import '../../../logger.dart';
import '../plug.dart';
import 'game_instance_std.dart';

class PlugLocation extends Plug{
  PlugLocation(GameInstanceStd ins){
    instance=ins;
    final lastInfo = ins.model.gameSrcState.value.pbGameSave.gameGpsInfos;

    if(lastInfo.isNotEmpty){
      for(var one in lastInfo){
        var p = MPosition();
        p.latitude = one.latitude;
        p.longitude = one.longitude;
        p.directionRadian = one.directionRadian;
        p.timestamp = one.gpsTime.toModel();

        _addOnePosition(p, false);
      }
    }
  }
  GameInstanceStd? instance;
  final _app = App.to;
  final _api = ApiService.to;
  final _toUpload = <MPosition>[];
  bool get isEnableGPSTrack => _app.userProfile.gameSettingsGpsTrack.value;


  Future<void> uploadPosition() async {
    final ins = instance;

    if(ins!= null && isEnableGPSTrack){
      final model = ins.model;
      final gameId = model.gameSrcState.value.pbGameData.gameId;
      final data = <MPosition>[];
      final distanceMeter = model.myPositionHistoryLen.value.m;
      final paceSecondKm = model.paceSecondKm;

      if(_toUpload.isNotEmpty){
        data.addAll(_toUpload);

        try {
          await _api.gameGpsUpload(
              gameId, data, distanceMeter.round(), paceSecondKm.value.inSeconds);

          _toUpload.clear();
        } catch (e) {
          warn('GameId[$gameId]上传位置失败： $e');
        }
      }
    }
  }

  void onRcvPosition(MPosition p, GameInstanceStd ins) {
    p.directionRadian = -ins.compassRadiansFused.value;
    _toUpload.add(p);
    _addOnePosition(p, true);
  }

  void _addOnePosition(MPosition p, bool isSaveToDB){
    final ins = instance;
    if(ins==null){
      return;
    }

    MPosition? last;
    if (ins.model.myPositionHistory.isNotEmpty) {
      last = ins.model.myPositionHistory.last;
    }

    ins.model.myPositionHistory.add(p);
    ins.gameMapData.worldToPixel(p).then((offset){
      ins.model.myPositionOnMapHistory.add(offset);
    });

    ins.gameMapData.mapPackage?.isInHotZone(p).then((value) =>
      ins.model.zone.value=value
    );

    final startAt=ins.model.startAt;
    if(startAt==null){
      return;
    }
    final endAt = ins.model.endAt;

    if(endAt != null){
      if(p.timestamp.isAfter(endAt)){
        return;
      }
    }

    if(p.timestamp.isBefore(startAt)){
      return;
    }
    // 只记录开始点后
    if (last!=null) {
      final dis = p.distance(last);
      ins.model.myPositionHistoryLen.value += dis;
    }

    if(isSaveToDB){
      ins.model.gameSrcState.value.pbGameSave.gameGpsInfos.add(p.toPb2());
    }

  }
  Future<void> loopUploadPosition() async {
    while (isActive) {
      await Future.delayed(1.seconds);
      await uploadPosition();
    }
  }
  Future<void> _makeSureUploadAll() async {
    while (true) {
      try {
        await uploadPosition();
        return;
      } on GrpcError catch (e) {
        if (e.code != StatusCode.unavailable) {
          return;
        }
        error(e);
      } catch (e) {
        error(e);
        return;
      }
      await Future.delayed(100.milliseconds);
    }
  }

  @override
  Future<void> init() async{

    final locationStream = _app.locationStream;

    listenStream(locationStream, (p) {
      final ins = instance;
      if(ins!= null){
        onRcvPosition(p, ins);
      }
    });

    _app.locationStart(500.milliseconds, 1);
    _app.getPosition(timeout: 5.seconds).then((p) {
      final ins = instance;
      if(ins!= null){
        onRcvPosition(p, ins);
      }
    });
    loopUploadPosition();
  }

  @override
  Future<void> onClose() async{
    _app.locationStop();
    await _makeSureUploadAll();
    instance=null;
  }
}