import 'dart:convert';

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_screenutil/screenutil.dart';
import 'package:ysairplane2/code/YSCourse.dart';
import 'package:ysairplane2/code/YSCourseDetail.dart';
import 'package:ysairplane2/code/YSHome.dart';
import 'package:ysairplane2/code/YSMine.dart';
import 'package:ysairplane2/code/YSSquare.dart';
import 'package:ysairplane2/tools/YSTools.dart';
import 'package:jpush_flutter/jpush_flutter.dart';

class YSTabbar extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<YSTabbar> {
  final JPush jpush = new JPush();
  bool _isShow = true;
  @override
  void initState() {
    jpush.setup(
      appKey: "1f929bc00dda1119b28577c1", //你自己应用的 AppKey
      channel: "theChannel",
      production: false,
      debug: true,
    );
    jpush.applyPushAuthority(
        new NotificationSettingsIOS(sound: true, alert: true, badge: true)
    );
    jpush.getRegistrationID().then((rid) {
      print("flutter get registration id : $rid");
    });
    try {
      jpush.addEventHandler(
          onReceiveNotification: (Map<String, dynamic> message) async {
            print("flutter onReceiveNotification: $message");
          },
          onOpenNotification: (Map<String, dynamic> message) async {
            print("flutter onOpenNotification: $message");
            print('======================${message['extras']['cn.jpush.android.EXTRA']}');
            Map value = jsonDecode('${message['extras']['cn.jpush.android.EXTRA']}');
            print('======================${value['screct']}');
             Navigator.of(context,rootNavigator: true).push(
               CupertinoPageRoute(
                 builder: (context){
                   return YSCourseDetail(orderStr: '${value['screct']}',);
                 }
               )
             );
          },
          onReceiveMessage: (Map<String, dynamic> message) async {
            print("flutter onReceiveMessage: $message");
          },
          onReceiveNotificationAuthorization:(Map<String, dynamic> message) async {
            print("flutter onReceiveNotificationAuthorization: $message");
          });
    } on PlatformException {

    }
    super.initState();
  }

  final pageController = PageController();
  final List<Widget> widgets = [YSHome(), YSCourse(), YSSquare(), YSMine()];
  int currentIndex = 0;

  void onTap(int index) {
    if(index==3||index==2||index==1){
      isLogin(context,login: (){
        if(index==2){
          _isShow = false;
        }
        currentIndex = index;
        pageController.jumpToPage(index);
      });
    }else{
      if(index==2){
        _isShow = false;
      }
      currentIndex = index;
      pageController.jumpToPage(index);
    }
  }

  void onPageChanged(int index) {
    if(index==3||index==2||index==1){
      isLogin(context,login: (){
        currentIndex = index;
        setState(() {});
      });
    }else{
      currentIndex = index;
      setState(() {});
    }
  }

  @override
  Widget build(BuildContext context) {
    ScreenUtil.init(context,designSize: Size(750, 1624),allowFontScaling: false);
    return Scaffold(
      bottomNavigationBar: CupertinoTabBar(
        items: [
          BottomNavigationBarItem(
            icon: ImageIcon(AssetImage('lib/images/home.png'),size: 20,),
            label: '首页',
          ),
          BottomNavigationBarItem(
              icon: ImageIcon(AssetImage('lib/images/course.png'),size: 20,),
              label: '行程'
          ),
          BottomNavigationBarItem(
              icon: Stack(
                children: [
                  ImageIcon(AssetImage('lib/images/square.png'),size: 20,),
                  if(_isShow==true)Container(
                    height: 10,
                    width: 10,
                    decoration: BoxDecoration(
                        color: Colors.red,
                        borderRadius: BorderRadius.all(Radius.circular(5))
                    ),
                    margin: EdgeInsets.only(left: 15),
                  )
                ],
              ),//
              label: '广场'
          ),
          BottomNavigationBarItem(
              icon: ImageIcon(AssetImage('lib/images/mine.png'),size: 20,),
              label: '我的'
          ),
        ],
        currentIndex: currentIndex,
        onTap: onTap,
        activeColor: Color(0xFF007AFF),
        inactiveColor: Color(0xFF999999),
      ),
      body: NotificationListener<ShowNotification>(
        onNotification: (ShowNotification msg){
          onTap(1);
          return true;
        },
        child: PageView(
          controller: pageController,
          onPageChanged: onPageChanged,
          children: widgets,
          physics: NeverScrollableScrollPhysics(), // 禁止滑动
        ),
      ),
    );
  }
}

class ShowNotification extends Notification {
  bool isShow;
  ShowNotification(this.isShow);
}