loris/lib/partials/main_scaffold.dart

import 'package:flutter/material.dart';
import 'package:localization/localization.dart';
import 'package:loris/dialogues/makepost.dart';
import 'package:loris/pages/chat/chat.dart';
import 'package:loris/pages/notifications/notifications.dart';
import 'package:loris/pages/timeline/timeline.dart';
import 'package:loris/pages/settings/settings.dart';
import '../business_logic/websocket.dart' as websocket;

class MainScaffold extends StatefulWidget {
  const MainScaffold({Key? key}) : super(key: key);

  @override
  State<MainScaffold> createState() => _MainScaffoldState();
}

class _MainScaffoldState extends State<MainScaffold> {
  int index = 0;
  int unreadNotifs = 0;

  @override
  void initState() {
    notifStream.stream.listen((event) {
      if (index != 2) {
        if (mounted) {
          setState(() {
            unreadNotifs = event;
          });
        }
      }
    });
    super.initState();
  }

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

  @override
  Widget build(BuildContext context) {
    websocket.reloadWebsockets();
    final screens = [
      const Timeline(),
      chat(context),
      const Notifications(),
      settings(context),
    ];
    final buttons = [
      FloatingActionButton(
        child: const Icon(Icons.create),
        onPressed: () => showDialog(
          context: context,
          builder: (context) => const MakePost(),
        ),
      ),
      FloatingActionButton(
        onPressed: () {},
        child: const Icon(Icons.person_add),
      ),
      null,
      null,
    ];
    return Scaffold(
      extendBody: true,
      body: IndexedStack(
        index: index,
        children: screens,
      ),
      floatingActionButtonLocation: FloatingActionButtonLocation.centerDocked,
      floatingActionButton: buttons[index],
      bottomNavigationBar: BottomAppBar(
        child: NavigationBar(
            onDestinationSelected: (index) => setState(() {
                  this.index = index;
                  if (index == 2) {
                    unreadNotifs = 0;
                  }
                }),
            selectedIndex: index,
            destinations: [
              NavigationDestination(
                  icon: const Icon(Icons.forum), label: "timeline".i18n()),
              NavigationDestination(
                  icon: const Icon(Icons.chat), label: "chat".i18n()),
              NavigationDestination(
                  icon: Icon((unreadNotifs >= 1)
                      ? Icons.notifications_active
                      : Icons.notifications),
                  label: "notifications".i18n()),
              NavigationDestination(
                  icon: const Icon(Icons.settings), label: "settings".i18n()),
            ]),
      ),
    );
  }
}