home.dart

class Home extends StatefulWidget {
  Home({Key key}) : super(key: key);

  @override
  _HomeState createState() => _HomeState();
}

class _HomeState extends State<Home> with AutomaticKeepAliveClientMixin {
  @override
  bool get wantKeepAlive => true;

  var _scaffoldKey = GlobalKey<ScaffoldState>();
  final storageService = locator<LocalStorageService>();

  bool isAuth = false;
  PageController pageController;
  int pageIndex = 0;

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

    isAuth = storageService.getFromDisk('api_token') != '';
    pageController = PageController();
  }

  @override
  Widget build(BuildContext context) {
    super.build(context);
    return SafeArea(
      top: true,
      bottom: true,
      child: Scaffold(
        backgroundColor: Colors.white,
        key: _scaffoldKey,
        body: PageView(
          pageSnapping: true,
          children: <Widget>[
            Timeline(
              pageController: pageController,
            ),
            Search(),
            LikeScreen(),
            CartScreen(),

            storageService.getFromDisk('api_token') != null
                ? ProfileScreen()
                : AuthChooserScreen(),
          ],
          controller: pageController,
          onPageChanged: onPageChanged,
          physics: NeverScrollableScrollPhysics(),
        ),
        bottomNavigationBar: _buildBottomNavigationBar(),
      ),
    );
  }

  @override
  void dispose() {
    pageController.dispose();
    super.dispose();
  }

  void onPageChanged(int pageIndex) {
    setState(() {
      this.pageIndex = pageIndex;
    });
  }

  void onTap(int pageIndex) {
    pageController.animateToPage(
      pageIndex,
      duration: Duration(milliseconds: 1000),
      curve: Curves.ease,
    );
  }

  BottomNavigationBar _buildBottomNavigationBar() {
    return BottomNavigationBar(
      type: BottomNavigationBarType.fixed,
      items: <BottomNavigationBarItem>[
        BottomNavigationBarItem(
          icon: Icon(Icons.home),
          title: Text('BottomAppBar.homeTab'.tr()),
        ),
        BottomNavigationBarItem(
          icon: Icon(Icons.search),
          title: Text('BottomAppBar.searchTab'.tr()),
        ),
        BottomNavigationBarItem(
          icon: FaIcon(FontAwesomeIcons.heart),
          title: Text('BottomAppBar.likedTab'.tr()),
        ),
        BottomNavigationBarItem(
          icon: Icon(Icons.shopping_cart),
          title: Text('BottomAppBar.cartTab'.tr()),
        ),
        BottomNavigationBarItem(
          icon: Icon(Icons.account_circle),
          title: Text('BottomAppBar.accountTab'.tr()),
        ),
      ],
      currentIndex: pageIndex,
      selectedItemColor: kDarkColor,
      unselectedItemColor: Colors.black,
      showUnselectedLabels: true,
      onTap: onTap,
    );
  }
}