import 'dart:async';
import 'dart:math';
import 'dart:typed_data';
import 'package:f_cache/manager.dart';
import 'package:grpc/grpc.dart';
import 'package:fixnum/fixnum.dart' as fixnum;
import 'package:trackoffical_app/model.dart';
import 'package:trackoffical_app/service/app.dart';
import 'package:trackoffical_app/pb.dart' as pb;
import 'package:trackoffical_app/service/service.dart';
import 'package:trackoffical_app/utils.dart';
import 'package:protobuf/protobuf.dart';
import '../logger.dart';
import '../global.dart';

class _Stub{
  _Stub(
      this.channel,
      this.stub
      );
  ClientChannel channel;
  pb.ApiToAppClient stub;
}

class ApiService extends IService {
  static ApiService get to => Get.find();
  ClientChannel? channel;

  String? get token {
    final out = App.to.userProfile.token.val;
    if (out.isEmpty) {
      return null;
    }
    return out;
  }

  set token(String? v) {
    App.to.userProfile.token.val = v ?? '';
  }

  String get _appVersion => App.to.appVersion;

  ClientChannel _newChannel(){
    return ClientChannel(
      GlobalVar.apiHost,
      port: GlobalVar.apiPort,
      options: const ChannelOptions(credentials:
      // ChannelCredentials.secure()
        ChannelCredentials.insecure()
      ),
    );
  }

  pb.ApiToAppClient _getStub({Duration? timeout, ClientChannel? channel}){
    if (this.channel == null) {
      throw Exception('$runtimeType 未初始化');
    }
    final metadata = <String, String>{
      'source': "${pb.LoginSource.ToApp.value}"
    };
    metadata['version'] = _appVersion;
    if (token != null) {
      metadata['token'] = token!;
    }
    info("token: $token");

    return pb.ApiToAppClient(channel??this.channel!,
        options: CallOptions(
          metadata: metadata,
          timeout: timeout,
        ));
  }

  pb.ApiToAppClient get stub {
    return _getStub(timeout: 10.seconds);
  }

  _Stub get _stubForStream {
    final ch = _newChannel();
    return _Stub(ch, _getStub(channel: ch)) ;
  }


  Future<void> syncTime()async{
    try {
      final serverNow = await serverTime();
      App.to.correctByServerNow(serverNow);
      info('服务器时间：${App.to.now}');
    } catch(e){
      warn("获取服务器时间失败: ", e);
    }
  }


  @override
  Future<ApiService> init() async {
    channel = _newChannel();
    syncTime();

    return this;
  }

  Future<bool> isSignIn() async {
    final token = this.token;
    if (token == null) {
      return false;
    }
    if (token.isNotEmpty) {
      // try {
      //   await flushUserInfo();
      // } catch (e) {
      //   return false;
      // }
      return true;
    } else {
      return false;
    }
  }

  // Future<void> getVfCode() async {
  //   await stub.getVfPic(pb.DefaultRequest());
  // }

  // 获取短信验证码
  Future<void> authSendCodeToPhone(String phone, pb.SmsType smsType)async{
    info('authSendCodeToPhone [$phone]');
    await stub.toSendCodeToPhoneV2(pb.ToSendCodeToPhoneRequestV2()
      ..phone= phone
      ..smsType= smsType
    );
  }

  // 场控端_登录
  Future<void> signIn(String userCode, String password, String ip) async {
    final r = await stub.toSignInV2(pb.ToSignInRequestV2()
      ..userCode = userCode
      ..password = password
      ..ip = ip
    );
    token = r.token;

    debug('sign in success: $token');
  }

  // 场控端_登出
  void signOut(){
    stub.toSignOutV2(pb.DefaultRequest());
    token = null;
  }

  @override
  void onClose() {
    channel?.shutdown();
  }

  // 获取系统时间
  Future<DateTime> serverTime() async {
    final begin = DateTime.now();
    final r = await stub.toGetServerTime(pb.DefaultRequest());
    final cost = DateTime.now().difference(begin);
    final serverNow = DateTime.fromMillisecondsSinceEpoch(
            r.millisecondStamp.toInt(),
            isUtc: true)
        .toLocal();
    return serverNow.add(cost);
  }

  Future<Duration> getSmsSendLeftTime(String phone)async{
    final r = await stub.toGetSmsSendLeftTimeV2(pb.GetSmsSendLeftTimeRequest()..phone= phone);
    info('getSmsSendLeftTime: $phone - ${r.second}s');
    return r.second.seconds;
  }

  // Future<pb.GetUpdateVersionReply> getUpdateVersion(String version)async{
  //   info('getUpdateVersion: $version');
  //   final r = await stub.getUpdateVersion(pb.GetUpdateVersionRequest()..vCode= version);
  //   return r;
  // }

  // 场控端_地图列表
  Future<List<MapInfo>> mapList(MPosition? position, int offset, int limit) async{
    info('mapList: $position');
    final req = pb.MapListRequestV2()
      ..offset = offset
      ..limit = limit;
    if (position != null){
      req.position = position.toPb();
    }

    final r = await stub.toMapListV2(req);
    return r.list.map((e) => e.toModel()).toList();
  }

  // 场控端_地图自身信息
  Future<pb.ToMapInfoV2> mapDetail(int mapId, String pin)async{
    info('mapDetail mapId: $mapId pin: $pin');

    final r = await stub.toMapDetailV2(pb.IdRequest()
      ..id = fixnum.Int64(mapId)
    );
    return r;
  }

  // 场控端_地图内正在进行中的活动人员详情
  Future<pb.ToUserDetailQueryReplyV2> userDetailQuery(int mapId, bool isFullQuery)async{
    info('userDetailQuery mapId: $mapId isFullQuery: $isFullQuery');

    final r = await stub.toUserDetailQueryV2(pb.ToUserDetailQueryRequestV2()
      // ..mapId = fixnum.Int64(mapId)
      ..mapId = mapId
      ..isFullQuery = isFullQuery
    );
    return r;
  }

  // Future<Bin> getBinByMd5(Uint8List md5, OnPercentage onPercentage) async{
  //   final stream = _getStub().toGetBinaryByMd5(pb.ToGetBinaryByMd5Request()..md5=md5);
  //   String ext='';
  //   Uint8List? data;
  //   var nonce=Uint8List(0);
  //   var i = 0;
  //
  //   await for (var one in stream){
  //     if(data == null){
  //       data = Uint8List(one.allCount);
  //       ext = one.ext;
  //       nonce= Uint8List.fromList(one.nonce);
  //     }
  //
  //     for(var b in one.data){
  //       data[i]=b;
  //       i++;
  //     }
  //
  //     onPercentage(i, data.length);
  //   }
  //
  //
  //   await stream.cancel();
  //   return Bin()
  //     ..ext=ext
  //     ..data=data??Uint8List(0)
  //     ..nonce=nonce;
  //   return Bin();
  // }

  Future<BinReader> getBinReaderByMd5(Uint8List md5) async {
    final stream = _getStub().toGetBinaryByMd5(pb.ToGetBinaryByMd5Request()..md5=md5);
    final controller = StreamController<List<int>>();
    controller.onCancel = (){
      stream.cancel();
    };

    Future<void> rcv()async{
      try{
        await for(final one in stream){
          controller.add(one.data);
        }
      }finally{
        controller.close();
        stream.cancel();
      }
    }
    rcv();
    stream.headers.then((value) => debug(value));
    final headers = await stream.headers;
    final lenStr = headers['all-length']!;
    final length = int.parse(lenStr);
    final nonce = headers['nonce']!;
    final ext = headers['ext']!;

    return BinReader(Reader( controller.stream, length))
      ..ext=ext
      ..nonce=nonce
    ;
  }

}

// class Bin{
//   var ext='';
//   var data = Uint8List(0);
//   var nonce = Uint8List(0);
// }

class BinReader{
  BinReader(this.reader);
  var ext='';
  Reader reader;
  var nonce='';
}

// typedef OnPercentage = void Function(int, int);

class ApiServiceMock extends ApiService {
  @override
  Future<ApiService> init() async {
    debug('$runtimeType ready!');
    return this;
  }

  final random = Random();

  @override
  Future<void> signIn(String userCode, String password, String ip) async {}

  @override
  void onReady() {}

  @override
  void onClose() {}

  @override
  Future<DateTime> serverTime() async {
    return DateTime.now();
  }

/*
  @override
  Future<pb.MapActivityListReply> mapActivityList(int mapId, String pin)async{
    return pb.MapActivityListReply()
      ..list.addAll([
        pb.MapActivitySimpleInfo()
          ..id=0
          ..name= '穿越荒野：勇闯野性之旅-穿越荒野：勇闯野性之旅-穿越荒野：勇闯野性之旅-穿越荒野：勇闯野性之旅-穿越荒野：勇闯野性之旅'
          ..difficulty= 1
          ..distanceMinMeter= 217.1
          ..closeDoorTime= 190.minutes.toPb()
          ..isUsed= false
          ..routeCount= 28
          ..totalControlNum= 12
        ,
        pb.MapActivitySimpleInfo()
          ..id=1
          ..name= '极限挑战 战胜重力'
          ..difficulty= 2
          ..distanceMinMeter= 8.1
          ..closeDoorTime= 190.minutes.toPb()
          ..isUsed= true
          ..routeCount= 6
          ..totalControlNum= 16
        ,
      ])
    ;
  }

  @override
  Future<pb.ActivityDetailReply> activityDetail(int id) async {
    final simple = pb.MapActivitySimpleInfo()
      ..id= 1
      ..name= '周末爬山健身运动'
      ..closeDoorTime= 90.minutes.toPb()
      ..distanceMinMeter= 71.3;

    return pb.ActivityDetailReply()
      ..baseInfoV2= simple
      ..content= '    此主题为全民爬山健身定向运动，全民爬山健身运动是我国体育事业发展的重要组成部分，也是实现中华民族伟大复兴中国梦的重要内容。'
        ..routes.addAll([
          pb.MapRoute()
            ..name='XL0002'
            ..distanceMeter= 3331
            ..altitudeDiffMeter= 223
            ..useCount= 0
          ,
          pb.MapRoute()
            ..name= 'XL0003'
            ..distanceMeter= 5430
            ..altitudeDiffMeter= 123
            ..useCount=2
          ,
        ])
    ;
  }
*/


  // @override
  Future<List<MapInfo>> mapRecommendList(MPosition? position)async{
    info('mapRecommendList: $position');

    return [
      MapInfo()
        ..name= '英雄山风景区'
        // ..isOpen=true
        // ..isRecommend=true
      ,
      MapInfo()..name= '板桥广场'
        // ..isRecommend=true
    ];
  }

  @override
  Future<List<MapInfo>> mapList(MPosition? position, int offset, int limit)async{
    info('mapList: $position');

    final out = <MapInfo>[];
    for(var i=0;i< limit;i++){
      out.add(MapInfo()
          ..name ='$offset-${random.nextInt(10000)}公园'
      );
    }


    return out;
  }

}

/*
class StreamGuardianWatch{
  StreamGuardianWatch(
      this.channel,
      this.stream
      );
  ClientChannel channel;
  ResponseStream<pb.PupilInGameWatchReply> stream;
}
*/

extension ExtInt64 on fixnum.Int64 {
  pb.IdRequest toIdRequest(){
    return pb.IdRequest()
      ..id = this;
  }
}

extension ExtNum on num {
  pb.IdRequest toIdRequest(){
    return pb.IdRequest()
      ..id = fixnum.Int64(toInt());
  }
}