import 'dart:convert';
import 'dart:isolate';
import 'dart:typed_data';
import 'package:dio/dio.dart';
import 'package:encrypt/encrypt.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:ysairplane/code/YSBill.dart';
import 'package:ysairplane/code/YSLogin.dart';
import 'package:fluttertoast/fluttertoast.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:ysairplane/code/YSSetPayPass.dart';

import 'YSTools.dart';
//http://aviation.ytby0402.top
//http://192.168.1.77:8082
String base = 'http://aviation.ytby0402.top';
int outTime = 20000;
enum requestType{
  put,
  delete,
  get,
  post
}
typedef widgetCallback = Widget Function(dynamic value);

ysRequestHttp(BuildContext context,{requestType type,String api,var parameter,bool isLoading,VoidCallback refresh,bool isToken}) async {
  FocusScope.of(context).unfocus();
  if(isLoading==true)showDialog(
      context: context,
      barrierDismissible: false,
      builder: (BuildContext context) {
        return LoadingDialog();
      }
  );
  try {
    SharedPreferences prefs = await SharedPreferences.getInstance();
    String token = prefs.getString('token');
    Map<String, dynamic> httpHeaders = {
      'Accept': 'application/json,*/*',
      'Content-Type': 'application/json',
      if(isToken==true)'Authentication': token??''
    };
    String url = base+api;
    print('请求网址:$url');
    if(isToken==true)print('token:$token');
    print('请求参数:$parameter');
    Response response;
    if(type==requestType.put){
      response = await Dio().put(url,data: parameter,options: Options(receiveTimeout: outTime,headers: httpHeaders));
    }else if(type==requestType.post){
      response = await Dio().post(url,data: parameter,options: Options(receiveTimeout: outTime,headers: httpHeaders));
    }else if(type==requestType.delete){
      response = await Dio().delete(url,data: parameter,options: Options(receiveTimeout: outTime,headers: httpHeaders));
    }else{
      response = await Dio().get(url,queryParameters: Map<String, dynamic>.from(parameter),options: Options(receiveTimeout: outTime,headers: httpHeaders));
    }
    if(isLoading==true)Navigator.of(context,rootNavigator: true).pop();
    LogUtil.d('请求结果:${response.data}');
    Map dict = response.data;
    if(dict['code']==200){
      ysFlutterToast(context,'操作成功');
      return dict;
    }else if(dict['code']==500){
      ysFlutterToast(context,'网络错误');
    }else if(dict['code']==404){
      ysFlutterToast(context,'接口请求错误');
    }else if(dict['code']==401){
      ysFlutterToast(context,'登陆已过期');
      Navigator.of(context,rootNavigator: true).push(
          CupertinoPageRoute(
              builder: (context){
                Future<SharedPreferences> _prefer = SharedPreferences.getInstance();
                _prefer.then((value){
                  value.remove('token');
                });
                return YSLogin();
              }
          )
      ).then((value){
        refresh();
      });
    }else if(dict['code']==400){
      ysFlutterToast(context,'没有检测到手机号');
    }else if(dict['code']==403){
      ysFlutterToast(context,'没有相关权限');
    }else if(dict['code']==405){
      ysFlutterToast(context,'没有注册，请注册');
      if(isToken==true)Navigator.of(context).push(
          CupertinoPageRoute(
              builder: (context){
                Future<SharedPreferences> _prefer = SharedPreferences.getInstance();
                _prefer.then((value){
                  value.remove('token');
                });
                return YSLogin();
              }
          )
      ).then((value){
        refresh();
      });
    }else if(dict['code']==406){
      ysFlutterToast(context,'密码错误');
    }else if(dict['code']==407){
      ysFlutterToast(context,'注册成功，需要新建账号');
      Navigator.of(context).push(
          CupertinoPageRoute(
              builder: (context){
                return YSBill();
              }
          )
      );
    }else if(dict['code']==408){
      ysFlutterToast(context,'用户名重复');
    }
  } catch (error) {
    if(isLoading==true)Navigator.of(context,rootNavigator: true).pop();
    print('网络错误:$error');
    ysFlutterToast(context,'网络错误');
  }
}


ysRequestHttpEncrypt(BuildContext context,{requestType type,String api,var parameter,bool isLoading,bool isToken}) async {
  FocusScope.of(context).unfocus();
  if(isLoading==true)showDialog(
    context: context,
    barrierDismissible: false,
    builder: (BuildContext context) {
      return LoadingDialog();
    }
  );
  try {
    SharedPreferences prefs = await SharedPreferences.getInstance();
    String token = prefs.getString('token');
    Map<String, dynamic> httpHeaders = {
      'Accept': 'application/json,*/*',
      'Content-Type': 'application/json',
      if(isToken==true)'Authentication': token??''
    };
    String url = base+api;
    print('请求网址:$url');
    if(isToken==true)print('token:$token');
    print('请求参数:$parameter');
    var requestStr = await rsaEncryption(json.encode(parameter));
    print('加密参数:${{'parmar':requestStr}}');
    Response response;
    if(type==requestType.put){
      response = await Dio().put(url,data: {'parmar':requestStr},options: Options(receiveTimeout: outTime,headers: httpHeaders));
    }else if(type==requestType.post){
      response = await Dio().post(url,data: {'parmar':requestStr},options: Options(receiveTimeout: outTime,headers: httpHeaders));
    }else if(type==requestType.delete){
      response = await Dio().delete(url,data: {'parmar':requestStr},options: Options(receiveTimeout: outTime,headers: httpHeaders));
    }else{
      response = await Dio().get(url,queryParameters: Map<String, dynamic>.from({'parmar':requestStr}),
          options: Options(receiveTimeout: outTime,headers: httpHeaders));
    }
    if(isLoading==true)Navigator.of(context,rootNavigator: true).pop();
    print('请求结果:${response.data}');
    Map dict = response.data;
    if(dict['code']==200){
      ysFlutterToast(context,'操作成功');
      if(response.data['data']!=null){
        String encrypt = response.data['data'];
        String dictStr = await rsaPrivateDecrypt(encrypt);
        LogUtil.d('解密后：$dictStr');
        return json.decode(dictStr);
      }else{
        return '';
      }
    }else if(dict['code']==500){
      ysFlutterToast(context,'网络错误');
    }else if(dict['code']==404){
      ysFlutterToast(context,'接口请求错误');
    }else if(dict['code']==401){
      ysFlutterToast(context,'登陆已过期');
      if(isToken==true)Navigator.of(context).push(
        CupertinoPageRoute(
          builder: (context){
            Future<SharedPreferences> _prefer = SharedPreferences.getInstance();
            _prefer.then((value){
              value.remove('token');
            });
            return YSLogin();
          }
        )
      );
    }else if(dict['code']==400){
      ysFlutterToast(context,'没有检测到手机号');
    }else if(dict['code']==403){
      ysFlutterToast(context,'没有相关权限');
    }else if(dict['code']==405){
      ysFlutterToast(context,'没有注册，请注册');
      if(isToken==true)Navigator.of(context).push(
          CupertinoPageRoute(
              builder: (context){
                Future<SharedPreferences> _prefer = SharedPreferences.getInstance();
                _prefer.then((value){
                  value.remove('token');
                });
                return YSLogin();
              }
          )
      ).then((value){

      });
    }else if(dict['code']==406){
      ysFlutterToast(context,'密码错误');
    }else if(dict['code']==407){
      ysFlutterToast(context,'注册成功，需要新建账号');
      String encrypt = response.data['data'];
      var dictStr = await rsaPrivateDecrypt(encrypt);
      print('解密后：$dictStr');
      Navigator.of(context).push(
        CupertinoPageRoute(
          builder: (context){
            return YSBill();
          }
        )
      );
    }else if(dict['code']==408){
      ysFlutterToast(context,'用户名重复');
    }else if(dict['code']==804){
      return {'code':804};
    }else if(dict['code']==801){
      return {'code':801};
    }
  } catch (error) {
    if(isLoading==true)Navigator.of(context,rootNavigator: false).pop();
    print('网络错误:$error');
    ysFlutterToast(context,'网络错误');
  }
}

class LoadingDialog extends Dialog {
  @override
  Widget build(BuildContext context) {
    return Material(
      type: MaterialType.transparency,
      child: Center(
        child: SizedBox(
          width: 120.0,
          height: 120.0,
          child: Container(
            decoration: ShapeDecoration(
              color: Colors.black87,
              shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.all(
                  Radius.circular(8.0),
                ),
              ),
            ),
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              crossAxisAlignment: CrossAxisAlignment.center,
              children: <Widget>[
                CircularProgressIndicator(valueColor: AlwaysStoppedAnimation<Color>(Colors.white),),
                Padding(
                  padding: EdgeInsets.only(top: 20.0,),
                  child: Text('正在请求',style: TextStyle(color: Colors.white),),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}

void ysFlutterToast(BuildContext context,String msg){
  FlutterToast(context).showToast(
    child: Container(
      padding: EdgeInsets.only(left: 20,right: 20,top: 5,bottom: 5),
      decoration: BoxDecoration(
        color: Colors.black87,
        borderRadius: BorderRadius.all(Radius.circular(25))
      ),
      child: Text(msg,style: TextStyle(fontSize: 14,color: Colors.white),),
    ),
    gravity: ToastGravity.BOTTOM,
    toastDuration: Duration(seconds: 2),
  );
}

//加密
Future<String> rsaEncryption(String data) async {
  // 原始json转成字节数组
  List<int> sourceBytes = utf8.encode(data);
  final parser = RSAKeyParser();
  String key = '-----BEGIN PUBLIC KEY-----\nMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCit9lK3Y4jrSBAWbbH4OYN4UzMLx7Q+zy0qKzyzMszeEitI8xLP9E4HanriT'
      'X6iKFrdKJLb55DWga79trUozlzeI7XXu67S5VRr+YRLOXHbbTGrJVV63RnolgGd9jkzDd74wjVJIn8gylqlN+WG5/4daMHeEVQ8bGSq03aotzxrwIDAQAB';
  final publicKey = parser.parse(key);
  final encrypter = Encrypter(RSA(publicKey: publicKey));
  // 数据长度
  int inputLen = sourceBytes.length;
  // 加密最大长度
  int maxLen = 117;
  // 存放加密后的字节数组
  List<int> totalBytes = List();
  // 分段加密 步长为117
  for (var i = 0; i < inputLen; i += maxLen) {
    // 还剩多少字节长度
    int endLen = inputLen - i;
    List<int> item;
    if (endLen > maxLen) {
      item = sourceBytes.sublist(i, i + maxLen);
    }else{
      item = sourceBytes.sublist(i, i + endLen);
    }
    // 加密后的对象转换成字节数组再存放到容器
    totalBytes.addAll(encrypter.encryptBytes(item).bytes);
  }
  return base64.encode(totalBytes);
}

//解密
Future<String> rsaPrivateDecrypt(String data) async {
  Uint8List sourceBytes = base64.decode(data);
  final parser = RSAKeyParser();
  String key = '-----BEGIN PRIVATE KEY-----\nMIICdQIBADANBgkqhkiG9w0BAQEFAASCAl8wggJbAgEAAoGBAKK32UrdjiOtIEBZtsfg5g3hTMwvHtD7PLSorPLMyzN4SK0jzEs/0TgdqeuJNfqIoWt0oktvnkNaBrv22tSjOXN4jtde7rtLlVGv5hEs5c'
      'dttMaslVXrdGeiWAZ32OTMN3vjCNUkifyDKWqU35Ybn/h1owd4RVDxsZKrTdqi3PGvAgMBAAECgYBQ/OanD40Ojr3NqZmC9JoscGXT/uP8qf91/7pNAsdkr8qkenvVPEc7AfCv7dQzBUwqepvIph6EcUuGxH/4c+FEn5X'
      'QS/dNhdDHZtZ6E+DQzXHvrz7wVfDSecyYEKHRKw0WZmoCy6bfeDEf5zShmMJtmtakGq/+ES6U0DtLN4SWkQJBANCadJQm2ZSnHc0lCHkdkcSXsS+nhtRZ5EyKg3Xr81BClQXPtswYhPcNq9QSC/CBiaVNeC0TOOZEfaVEH'
      'wc+bAkCQQDHsHPzMbnyZtPdv3MG1xukTgIuFsmg/LPM+hkuSNDUNR63PBNeVv59DwnFd+bgQTyZWQ97wm6Nx4ZQSfN3BE33AkB4RbWVfdjRZpE+KG38NtpGuRdF3JdWdAW3Q92L7eC5k8oMMbi5cCGpt84sVcNgha9xCXuSs'
      'ZSK3056LQ6exJTRAkBSPmqDD0f2fkNkYSWO+6l20mozcU857tpe4eLdHUBlJjuwXB3eDRZji34KxodgdX3v6q5l2n6OBk9bYhnUOwGhAkB7+gFxeARigkNJl8CCVtpJ9oAped5NT8ebDS8KCAU2qu6Y9mz04bk2NbHAf6TmIm'
      'oLCa/ORgP0Tn4HefEOfBKl';//根据存放位置更改
  final privateKey = parser.parse(key);
  final encrypter = Encrypter(RSA(privateKey: privateKey));
  // 数据长度
  int inputLen = sourceBytes.length;
  // 解密最大长度
  int maxLen = 128;
  // 存放加密后的字节数组
  List<int> totalBytes = List();
  // 分段解密 步长为128
  for (var i = 0; i < inputLen; i += maxLen) {
    // 还剩多少字节长度
    int endLen = inputLen - i;
    Uint8List item;
    if (endLen > maxLen) {
      item = sourceBytes.sublist(i, i + maxLen);
    }else{
      item = sourceBytes.sublist(i, i + endLen);
    }
    // 解密后的对象转换成字节数组再存放到容器
    totalBytes.addAll(encrypter.decryptBytes(Encrypted(item)));
  }
  return utf8.decode(totalBytes);
}

ysFutureWidge({widgetCallback data,VoidCallback net}){
  return FutureBuilder(
    future: net(),
    builder: (context, snapshot) {
      var widget;
      if (snapshot.connectionState == ConnectionState.done) {
        if (snapshot.hasError) {
          widget = Icon(
            Icons.error,
            color: Colors.red,
            size: 48,
          );
        }else if(snapshot.data==null||snapshot.data.isEmpty||snapshot.data==[]){
          widget = Container();
        } else {
          widget = data(snapshot);
        }
      } else {
        widget = Padding(
          padding: EdgeInsets.all(20),
          child: CircularProgressIndicator(),
        );
      }
      return Center(
        child: Container(
          child: widget,
        ),
      );
    },
  );
}