diplomatic-quarter/lib/widgets/bottom_navigation/bottom_nav_bar.dart

import 'package:diplomaticquarterapp/core/service/AuthenticatedUserObject.dart';
import 'package:diplomaticquarterapp/core/viewModels/project_view_model.dart';
import 'package:diplomaticquarterapp/locator.dart';
import 'package:diplomaticquarterapp/models/Appointments/toDoCountProviderModel.dart';
import 'package:diplomaticquarterapp/pages/BookAppointment/BookingOptions.dart';
import 'package:diplomaticquarterapp/pages/ToDoList/ToDo.dart';
import 'package:diplomaticquarterapp/uitl/app_toast.dart';
import 'package:diplomaticquarterapp/uitl/translations_delegate_base.dart';
import 'package:eva_icons_flutter/eva_icons_flutter.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';

import '../../d_q_icons_icons.dart';
import 'bottom_navigation_item.dart';

class BottomNavBar extends StatefulWidget {
  final ValueChanged<int> changeIndex;
  final int index ;
  BottomNavBar({Key key, this.changeIndex,this.index}) : super(key: key);

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

class _BottomNavBarState extends State<BottomNavBar> {
  int _index = 0;

  ToDoCountProviderModel model;
  AuthenticatedUserObject authenticatedUserObject =
      locator<AuthenticatedUserObject>();

  _changeIndex(int index) {
    if (index != 4)
      widget.changeIndex(index);
    else {
      if (authenticatedUserObject.isLogin) {
        if (model.count != 0) {
          widget.changeIndex(index);
        } else {
          AppToast.showErrorToast(
              message: TranslationBase.of(context).upcomingEmpty);
        }
      } else {
        widget.changeIndex(index);
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    model = Provider.of<ToDoCountProviderModel>(context);
    ProjectViewModel projectViewModel = Provider.of(context);
    return BottomAppBar(
      elevation: 4,
      shape: CircularNotchedRectangle(),
      color: Colors.white,
      child: Padding(
        padding: EdgeInsets.symmetric(horizontal: 18),
        child: Row(
          mainAxisSize: MainAxisSize.max,
          mainAxisAlignment: MainAxisAlignment.spaceAround,
          children: [
            BottomNavigationItem(
              icon: EvaIcons.home,
              activeIcon: EvaIcons.home,
              changeIndex: _changeIndex,
              index: widget.index,
              currentIndex: 0,
              name: TranslationBase.of(context).home,
            ),
            BottomNavigationItem(
              icon: DQIcons.my_medical_file,
              activeIcon: DQIcons.my_medical_file,
              changeIndex: _changeIndex,
              index: widget.index,
              currentIndex: 1,
              name: TranslationBase.of(context).medicalProfile,
            ),
             if(widget.index == 0 && projectViewModel.havePrivilege(34))
             Expanded(
             child: SizedBox(
               height: 50,
               child: Column(
                 mainAxisSize: MainAxisSize.min,
                 mainAxisAlignment: MainAxisAlignment.center,
                 children: <Widget>[
                   SizedBox(height: 22),
                 ],
               ),
             ),
           ),
            if(widget.index != 0 && projectViewModel.havePrivilege(34))
            BottomNavigationItem(
              icon: EvaIcons.calendar,
              activeIcon: EvaIcons.calendar,
              changeIndex: _changeIndex,
              index: _index,
              currentIndex: 2,
              name: TranslationBase.of(context).bookAppo,
            ),

            BottomNavigationItem(
              icon: DQIcons.family,
              activeIcon: DQIcons.family,
              changeIndex: _changeIndex,
              index: widget.index,
              currentIndex: 3,
              name: TranslationBase.of(context).myFamily,
            ),
            if(projectViewModel.havePrivilege(51))
            BottomNavigationItem(
              icon: EvaIcons.calendar,
              activeIcon: EvaIcons.calendar,
              changeIndex: _changeIndex,
              index: widget.index,
              currentIndex: 4,
              name: TranslationBase.of(context).todoList,
            )
          ],
        ),
      ),
    );
  }

  Future navigateToBookingOptions(context) async {
    Navigator.push(
        context, MaterialPageRoute(builder: (context) => BookingOptions()));
  }

  Future navigateToToDoList(context) async {
    Navigator.push(context,
        MaterialPageRoute(builder: (context) => ToDo(isShowAppBar: false)));
  }
}