cdb_ui/lib/main.dart

import 'package:cdb_ui/api.dart';
import 'package:cdb_ui/pages/flow/flows_page.dart';
import 'package:cdb_ui/pages/items.dart';
import 'package:cdb_ui/pages/locations.dart';
import 'package:cdb_ui/pages/setup.dart';
import 'package:cdb_ui/pages/home.dart';
import 'package:flutter/material.dart';

Future<void> main() async {
  runApp(const MyApp());
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  bool init = false;

  refresh() {
    setState(() {});
  }

  @override
  void initState() {
    super.initState();
    () async {
      await API().init(refresh);
      if (API().isInit()) {
        await API().prefetch();
        setState(() {
          init = true;
        });
      }
    }();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        title: 'CDB',
        theme: ThemeData(
          colorScheme: ColorScheme.fromSeed(
              seedColor: Colors.deepPurple, brightness: Brightness.dark),
          useMaterial3: true,
        ),
        home: API().isInit()
            ? (API().isPrefetched()
                ? const MyHomePage()
                : const Scaffold(
                    body: Center(child: CircularProgressIndicator()),
                  ))
            : const SetupPage());
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key});

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int pageIndex = 0;

  List<Widget> pages = [
    const HomePage(),
    const ItemsPage(),
    const FlowsPage(),
    const LocationsPage()
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      bottomNavigationBar: BottomNavigationBar(
        fixedColor: Colors.white,
        unselectedItemColor: Colors.white70,
        items: const [
          BottomNavigationBarItem(icon: Icon(Icons.home), label: "Home"),
          BottomNavigationBarItem(
              icon: Icon(Icons.data_object), label: "Items"),
          BottomNavigationBarItem(icon: Icon(Icons.receipt), label: "Flows"),
          BottomNavigationBarItem(
              icon: Icon(Icons.location_city), label: "Locations"),
        ],
        currentIndex: pageIndex,
        onTap: (value) {
          setState(() {
            pageIndex = value;
          });
        },
      ),
      body: pages[pageIndex],
    );
  }
}