import 'package:fixnum/fixnum.dart';
import 'package:grpc/grpc.dart';
import 'package:trackoffical_app/service/game/game_instance.dart';
import 'package:trackoffical_app/service/game/game_instance_guardian.dart';
import 'package:trackoffical_app/service/game/game_instance_orienteering_assistant.dart';
import 'package:trackoffical_app/service/game/game_instance_std/game_instance_std.dart';
import 'package:trackoffical_app/service/service.dart';
import 'package:trackoffical_app/view/ingame/game_orienteering_assistant/game_orienteering_assistant_view.dart';
import 'dart:async';
import '../../exception/exception.dart';
import '../../logger.dart';
import '../../model/game_state.dart';
import '../api.dart';
import '../database.dart';

class GameManagerService extends IService {
  static GameManagerService get to => Get.find();
  final _api = ApiService.to;
  final _database = DatabaseService.to;


  Future<GameInstanceStd?> checkUnFinished()async{
    final save = await _database.getExistGameData();
    if (save != null) {
      info('存在本地未完成游戏');
      final instance = GameInstanceStd(
        gameState: save.toState(),
      );
      return instance;
    } else {
      try {
        final online = await _api.getInGameData();
        final gameState = GameState()
          ..pbGameData = online.data
          ..pbGameSave = online.save;
        info('存在线上未完成游戏');
        final instance = GameInstanceStd(
          gameState: gameState,
        );
        return instance;
      } on GrpcError catch (e) {
        if (e.code != StatusCode.notFound) {
          warn(e);
        }
      } catch (e) {
        warn(e);
      }
    }

    return null;
  }

  Future<GameInstanceStd> gameStart(int activityId, Int64 mapRouteId) async {
    info('项目Id[$activityId]准备开始');
    if(statue.value== GameManagerServiceStatus.closing){
      throw GameNotClosedError();
    }

    final data = await ApiService.to.gameStart(activityId, mapRouteId);
    final instance = GameInstanceStd(
      gameState: data.toGameState(),
    );
    instanceStart(instance);
    info('活动Id[$activityId]，游戏Id[${instance.id}]已开始');
    return instance;
  }

  Future<void> instanceStop()async{
    if(statue.value == GameManagerServiceStatus.closing){
      warn('[${instance.runtimeType}]正在停止，忽略操作');
      return;
    }
    if(instance==null){
      return;
    }

    statue.value = GameManagerServiceStatus.closing;
    debug('[${instance.runtimeType}]正在停止');
    await instance?.closeUsedByManager();
    Get.delete<GameInstance>();
    debug('[${instance.runtimeType}]已停止');
    instance=null;
    statue.value = GameManagerServiceStatus.idle;
  }

  Future<void> guardianStart(int underGuardianId)async{
    final instance = GameInstanceGuardian(underGuardianId: underGuardianId);
    await instanceStart(instance);
  }


  void orienteeringAssistantStart(){
    final instance = GameInstanceOrienteeringAssistant();
    Get.to(()=>gameOrienteeringAssistantView(instance));
    instanceStart(instance);
  }


  Future<void> instanceStart(GameInstance instance)async{
    if(statue.value== GameManagerServiceStatus.closing){
      throw GameNotClosedError();
    }

    await instanceStop();
    statue.value = GameManagerServiceStatus.preparing;
    this.instance=instance;
    instance.stop=(){
      instanceStop();
    };

    statue.value = GameManagerServiceStatus.loading;
    await instance.init();
    instance.loadProgress.value= 1;
    Get.put<GameInstance>(instance, permanent: true);
    statue.value = GameManagerServiceStatus.playing;
  }

  GameInstance? instance;
  final statue = GameManagerServiceStatus.idle.obs;

  @override
  Future<void> init() async{}
}


enum GameManagerServiceStatus {
  // 空闲
  idle,
  // 准备进入游戏
  preparing,
  loading,
  playing,
  // 结算中
  closing,
}