lift-app/lib/internal/home/home_page.dart

import 'dart:async';
import 'dart:ui';

import 'package:flustars/flustars.dart' as FlutterStars;
import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:liftmanager/common/common.dart';
import 'package:liftmanager/internal/account/account_router.dart';
import 'package:liftmanager/internal/bbs/page/bbs_page.dart';
import 'package:liftmanager/internal/bbs/page/hospital_page.dart';
import 'package:liftmanager/internal/friends/page/friends_list.dart';
import 'package:liftmanager/internal/home/provider/home_provider.dart';
import 'package:liftmanager/internal/wode/model/version_item.dart';
import 'package:liftmanager/internal/wode/page/wode_page.dart';
import 'package:liftmanager/internal/work/page/work_page.dart';
import 'package:liftmanager/net/api_service.dart';
import 'package:liftmanager/res/resources.dart';
import 'package:liftmanager/routers/fluro_navigator.dart';
import 'package:liftmanager/utils/image_utils.dart';
import 'package:liftmanager/utils/theme_utils.dart';
import 'package:liftmanager/utils/toast.dart';
import 'package:liftmanager/widgets/update_dialog.dart';
import 'package:package_info/package_info.dart';
import 'package:provider/provider.dart';
import 'package:uni_links/uni_links.dart';

class HomePage extends StatefulWidget {
  @override
  _HomeState createState() => _HomeState();
}

class _HomeState extends State<HomePage> {
  var _pageList = [
    BbsPage(),
    FriendsList(),
    HospitalPage(),
    WorkPage(),
    WodePage(),
  ];

  final _pageController = PageController();
  VersionItem versionItem = VersionItem();
  HomeProvider provider = HomeProvider();

  List<BottomNavigationBarItem> _list;
  double devicesHeight = window.physicalSize.height;
  Offset idleOffset = Offset(0, 0);
  Offset moveOffset = Offset(99999, 99999);
  Offset lastStartOffset = Offset(0, 0);
  PackageInfo packageInfo;

  @override
  void initState() {
    super.initState();

    initUniLinks();
    WidgetsBinding.instance.addPostFrameCallback((_) async {
      getNewVersion();
    });
  }

  getNewVersion() async {
    packageInfo = await PackageInfo.fromPlatform();
    ApiService(context: context).version(
        onSuccess: (res) {
          if (res != null) {
            versionItem = res;
            // int versionCode = FlutterStars.SpUtil.getInt("version_code") ?? 0;

            if (hasNewVersion(packageInfo.version, versionItem.version)) {
              _showUpdateDialog();
            }
            setState(() {});
          }
        },
        onError: (code, msg) {});
  }

  bool hasNewVersion(version, newversion) {
    try {
      var currentVersionArr =
          version.split('.').map((e) => int.parse(e)).toList();
      var newVersionArr =
          newversion.split('.').map((e) => int.parse(e)).toList();

      if (currentVersionArr[0] < newVersionArr[0]) {
        return true;
      }
      if (currentVersionArr[1] < newVersionArr[1]) {
        return true;
      }
      if (currentVersionArr[2] < newVersionArr[2]) {
        return true;
      }
    } catch (e) {
      return false;
    }
    return false;
  }

  void _showUpdateDialog() {
    showDialog(
        context: context,
        barrierDismissible: false,
        builder: (BuildContext context) {
          return UpdateDialog(
            content: versionItem.content,
            url: versionItem.url,
            code: versionItem.code,
            version: versionItem.version,
            forceUpdate: versionItem.forceUpdate == 1 ? true : false,
          );
        });
  }

  showAlertEvent() {
    showAlert(
      context,
      "提示",
      "确定登录？",
      "确定",
      () {
        NavigatorUtils.push(context, AccountRouter.loginPage, clearStack: true);
      },
      txt2: "取消",
      onPre2: () {
        // NavigatorUtils.goBack(context);
        // provider.value = 0;
        //跳转到home
        Navigator.of(context).pushAndRemoveUntil(
            MaterialPageRoute(builder: (context) => HomePage()),
            (route) => route == null);
      },
    );
  }

  String initialLink;
  Uri initialUri;

  @override
  dispose() {
    if (_sub != null) _sub.cancel();
    super.dispose();
  }

  double middleSize = 60;

  List<BottomNavigationBarItem> _buildBottomNavigationBarItem() {
    var data = [
      {
        'name': '首页',
        'icon': Image.asset(ImageUtils.getImgPath('home_icon')),
        'icon2': Image.asset(ImageUtils.getImgPath('home_icon_selected')),
      },
      {
        'name': '圈子',
        'icon': Image.asset(ImageUtils.getImgPath('circle_icon')),
        'icon2': Image.asset(ImageUtils.getImgPath('circle_icon_selected')),
      },
      {
        'name': '医院',
        'icon': Image.asset(ImageUtils.getImgPath('stethoscope_icon')),
        'icon2':
            Image.asset(ImageUtils.getImgPath('stethoscope_icon_selected')),
      },
      {
        'name': '工作台',
        'icon': Image.asset(ImageUtils.getImgPath('handcase_icon')),
        'icon2': Image.asset(ImageUtils.getImgPath('handcase_icon_selected')),
      },
      {
        'name': '我的',
        'icon': Image.asset(ImageUtils.getImgPath('puppet_icon')),
        'icon2': Image.asset(ImageUtils.getImgPath('puppet_icon_selected')),
      }
    ];

    _list = data
        .map<BottomNavigationBarItem>(
          (e) => BottomNavigationBarItem(
            icon: e['icon'],
            activeIcon: e['icon2'],
            label: e['name'],
          ),
        )
        .toList();

    return _list;
  }

  DateTime _lastTime;

  Future<bool> _isExit() {
    if (_lastTime == null ||
        DateTime.now().difference(_lastTime) > Duration(milliseconds: 2500)) {
      _lastTime = DateTime.now();
      toasts("再次点击退出应用");
      return Future.value(false);
    }
//    Toast.cancelToast();
    return Future.value(true);
  }

  StreamSubscription _sub;

  Future<void> initUniLinks() async {
    print('------获取参数--------');
    // Platform messages may fail, so we use a try/catch PlatformException.
    _sub = getLinksStream().listen((String link) {
      Uri u = Uri.parse(link);
      String path = u.queryParameters['page'];
      String id = u.queryParameters['id'];
      print('path');
      print(path);
      print(context);
      if (path.isNotEmpty &&
          (FlutterStars.SpUtil.getString(Constant.userId) != "-1" ||
              (FlutterStars.SpUtil.getString(Constant.userId) == "-1" &&
                  path != "/wode/vip"))) {
        NavigatorUtils.push(context, "$path?id=$id");
      } else if (FlutterStars.SpUtil.getString(Constant.userId) == "-1" &&
          path == "/wode/vip") {
        showAlertEvent();
      }
      print('---213---');
      print(link);
      // Parse the link and warn the user, if it is not correct
    }, onError: (err) {
      // Handle exception by warning the user their action did not succeed
    });

    initialLink = null;
    initialUri = null;
    // FlutterStars.SpUtil.putBool('isInitLink', false);
    // FlutterStars.SpUtil.getBool('isInitLink');
    if (FlutterStars.SpUtil.getBool('isInitLink') == null) {
      FlutterStars.SpUtil.putBool('isInitLink', false);
    }
    if (FlutterStars.SpUtil.getBool('isInitLink')) {
      initialLink = await getInitialLink();
      // toasts('initial link: $initialLink');
      if (initialLink != null) {
        initialUri = Uri.parse(initialLink);
        String path = initialUri.queryParameters['page'];
        String id = initialUri.queryParameters['id'];
        print('path');
        // toasts(path);
        // toasts("444");
        print(context);
        if (path.isNotEmpty &&
            (FlutterStars.SpUtil.getString(Constant.userId) != "-1" ||
                (FlutterStars.SpUtil.getString(Constant.userId) == "-1" &&
                    path != "/wode/vip"))) {
          NavigatorUtils.push(context, "$path?id=$id");
        } else if (FlutterStars.SpUtil.getString(Constant.userId) == "-1" &&
            path == "/wode/vip") {
          showAlert(
            context,
            "提示",
            "确定登录？",
            "确定",
            () {
              NavigatorUtils.push(context, AccountRouter.loginPage,
                  clearStack: true);
            },
            txt2: "取消",
            onPre2: () {
              NavigatorUtils.goBack(context);
              //跳转到home
            },
          );
        }
      }
    }
    FlutterStars.SpUtil.putBool('isInitLink', true);
  }

  @override
  Widget build(BuildContext context) {
    // ScreenUtil.instance = ScreenUtil(width: 750,height:1334)..init(context);
    double height = MediaQuery.of(context).size.height;
    double width = MediaQuery.of(context).size.width;

    ScreenUtil.instance = ScreenUtil(width: 375, height: 667)..init(context);

    return ChangeNotifierProvider<HomeProvider>(
        create: (_) => provider,
        child: WillPopScope(
          onWillPop: _isExit,
          child: Container(
              color: Colors.white,
              child: SafeArea(
                  top: false,
                  bottom: false,
                  child: Stack(children: <Widget>[
                    Scaffold(
                      bottomNavigationBar: Consumer<HomeProvider>(
                        builder: (_, provider, __) {
                          return BottomNavigationBar(
                            backgroundColor: ThemeUtils.getTabsBg(context),
                            items: _buildBottomNavigationBarItem(),
                            type: BottomNavigationBarType.fixed,
                            currentIndex: provider.value,
                            // elevation: 2,
                            iconSize: 21.0,
                            selectedFontSize: Dimens.font_sp10,
                            unselectedFontSize: Dimens.font_sp10,
                            selectedItemColor: Theme.of(context).primaryColor,
                            unselectedItemColor: Colours.unselected_item_color,
                            onTap: (index) {
                              _pageController.jumpToPage(index);
                              setState(() {
                                middleSize = 60;
                              });
                            },
                          );
                        },
                      ),
                      // 使用PageView的原因参看 https://zhuanlan.zhihu .com/p/58582876
                      body: PageView(
                        controller: _pageController,
                        onPageChanged: _onPageChanged,
                        children: _pageList,
                        physics: NeverScrollableScrollPhysics(),
                      ), // 禁止滑动
                    ),
                  ]))),
        ));
  }

  void _onPageChanged(int index) {
    if (index != 0 && FlutterStars.SpUtil.getString(Constant.userId) == "-1") {
      showAlertEvent();
    }

    provider.value = index;
  }
}