import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/services.dart';
import 'package:flutter_screenutil/screenutil.dart';
import 'package:flutter_swiper/flutter_swiper.dart';
import 'package:ysairplane2/code/YSTabbar.dart';
import 'package:ysairplane2/tools/YSNetWorking.dart';
import 'package:ysairplane2/tools/YSTools.dart';

class YSWelcome extends StatefulWidget {
  @override
  _YSWelcomeState createState() => _YSWelcomeState();
}

class _YSWelcomeState extends State<YSWelcome> {
  List _images = ['lib/images/1.png','lib/images/2.png','lib/images/3.png'];
  @override
  void initState() {
    Future.delayed(Duration(seconds: 0)).then((value){
      _getPrivacyAgreement();
    });
    super.initState();
  }
  _getPrivacyAgreement() async{
    ScreenUtil.init(context,designSize: Size(750, 1624),allowFontScaling: false);
    var dict = await ysRequestHttp(context, type: requestType.get, api: '/app/applets/dic/dtDic/getPrivacyAgreement', parameter: {},isLoading: false);
    if(dict!=null){
      showAgreeAlert(context,title: '用户协议与隐私政策',content: dict['data']['value'],agree: (value){
        if(value==false){
          SystemChannels.platform.invokeMethod('SystemNavigator.pop');
        }else{
          Navigator.pop(context);
        }
      },isWelcome: true);
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.white,
      body: Container(
        height: MediaQuery.of(context).size.height,
        width: MediaQuery.of(context).size.width,
        child: Swiper(
          itemBuilder: (BuildContext context, int index) {
            return Stack(
              children: [
                Image(
                  height: MediaQuery.of(context).size.height,
                  width: MediaQuery.of(context).size.width,
                  fit: BoxFit.fill,
                  image: AssetImage(_images[index]),
                ),
                if(index==_images.length-1)GestureDetector(
                  onTap: (){
                    Navigator.of(context).pushAndRemoveUntil(
                    CupertinoPageRoute(
                      builder: (context){
                        return YSTabbar();
                      }
                    ),(route) => false);
                  },
                  child: Container(
                    margin: EdgeInsets.only(top: MediaQuery.of(context).size.height-60,left: MediaQuery.of(context).size.width/2-50),
                    height: 35,
                    width: 100,
                    decoration: BoxDecoration(
                      color: Color(0xFF3676EC),
                      borderRadius: BorderRadius.all(Radius.circular(50))
                    ),
                    alignment: Alignment.center,
                    child: Text('立即体验',style: TextStyle(color: Colors.white,fontSize: 14,fontWeight: FontWeight.bold),),
                  ),
                )
              ],
            );
          },
          itemCount: _images.length,
          scrollDirection: Axis.horizontal,
          loop: false,
          duration: 300,
          autoplay: false,
          pagination: SwiperPagination(
              alignment: Alignment.bottomCenter,
              builder: DotSwiperPaginationBuilder(
                color: Color(0xFCE1E1E1),
                activeColor: Color(0xFF3676EC),
                size: 5.0,
                activeSize: 10.0,
              ),
              margin: EdgeInsets.only(bottom: 80)
          ),
          autoplayDisableOnInteraction : true,
        ),
      ),
    );
  }
}