cpd_job_app/lib/Widgets/bottom_nav_bar.dart

import 'package:cpd_ss23/Search/profile_company.dart';
import 'package:cpd_ss23/Search/search_companies.dart';
import 'package:cpd_ss23/jobs/upload_job.dart';
import 'package:cpd_ss23/user_state.dart';
import 'package:curved_navigation_bar/curved_navigation_bar.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';

import '../jobs/jobs_screen.dart';

class BottomNavigationBarForApp extends StatelessWidget {
  int indexNum = 0;

  BottomNavigationBarForApp({required this.indexNum});

  void _logout(context) {
    final FirebaseAuth _auth = FirebaseAuth.instance;

    showDialog(
        context: context,
        builder: (context) {
          return AlertDialog(
            backgroundColor: Colors.black54,
            title: const Row(
              children: [
                Padding(
                  padding: EdgeInsets.all(8.0),
                  child: Icon(Icons.logout, color: Colors.white, size: 36),
                ),
                Padding(
                  padding: EdgeInsets.all(8.0),
                  child: Text(
                    "Sign Out",
                    style: TextStyle(color: Colors.white, fontSize: 28),
                  ),
                ),
              ],
            ),
            content: const Text(
              "Do you want to Log Out?",
              style: TextStyle(color: Colors.white, fontSize: 20),
            ),
            actions: [
              TextButton(
                onPressed: () {
                  Navigator.canPop(context) ? Navigator.pop(context) : null;
                },
                child: const Text(
                  "No",
                  style: TextStyle(color: Colors.green, fontSize: 18),
                ),
              ),
              TextButton(
                onPressed: () {
                  _auth.signOut();
                  Navigator.canPop(context) ? Navigator.pop(context) : null;
                  Navigator.pushReplacement(
                      context, MaterialPageRoute(builder: (_) => UserState()));
                },
                child: const Text(
                  "Yes",
                  style: TextStyle(color: Colors.green, fontSize: 18),
                ),
              )
            ],
          );
        });
  }

  @override
  Widget build(BuildContext context) {
    return CurvedNavigationBar(
      color: Colors.cyan,
      backgroundColor: Colors.black,
      buttonBackgroundColor: Colors.white,
      height: 50,
      index: indexNum,
      items: const [
        Icon(
          Icons.list,
          size: 19,
          color: Colors.black,
        ),
        Icon(
          Icons.search,
          size: 19,
          color: Colors.black,
        ),
        Icon(
          Icons.add,
          size: 19,
          color: Colors.black,
        ),
        Icon(
          Icons.person_pin,
          size: 19,
          color: Colors.black,
        ),
        Icon(
          Icons.exit_to_app,
          size: 19,
          color: Colors.black,
        ),
      ],
      animationDuration: const Duration(
        milliseconds: 300,
      ),
      animationCurve: Curves.bounceInOut,
      onTap: (index) {
        if (index == 0) {
          Navigator.pushReplacement(
              context, MaterialPageRoute(builder: (_) => JobScreen()));
        } else if (index == 1) {
          Navigator.pushReplacement(
              context, MaterialPageRoute(builder: (_) => AllWorkersScreen()));
        } else if (index == 2) {
          Navigator.pushReplacement(
              context, MaterialPageRoute(builder: (_) => UploadJobNow()));
        } else if (index == 3) {
          final FirebaseAuth _auth = FirebaseAuth.instance;
          final User? user = _auth.currentUser;
          final String uid = user!.uid;
          Navigator.pushReplacement(context,
              MaterialPageRoute(builder: (_) => ProfileScreen(userID: uid)));
        } else if (index == 4) {
          _logout(context);
        }
      },
    );
  }
}