firewallet-mobile/lib/main.dart

import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:http/http.dart' as http;
import 'dart:convert';
import 'package:firewallet/home.dart';
import 'package:firewallet/transactions.dart';
import 'package:firewallet/domains.dart';
import 'package:firewallet/receive.dart';
import 'package:firewallet/send.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();

  final prefs = await SharedPreferences.getInstance();

  // Check for the uuid key in the shared preferences
  if (!prefs.containsKey('uuid')) {
    // Create an account using https://api.firewallet.au/account
    // and get the uuid from the response
    final response = await http.post(
      Uri.parse('https://api.firewallet.au/account'),
      headers: <String, String>{
        'Content-Type': 'application/json; charset=UTF-8',
      },
      body: '{}',
    );

    // Get uuid from { "userID": "..." }
    final uuid = jsonDecode(response.body)['userID'];
    // Save the uuid to the shared preferences
    await prefs.setString('uuid', uuid);
  }

  // Get the uuid from the shared preferences
  final String? uuid = prefs.getString('uuid');
  print('UUID: $uuid');
  runApp(MyApp(uuid: uuid ?? 'null'));
}

class MyApp extends StatelessWidget {
  const MyApp({
    super.key,
    required this.uuid,
  });

  final String uuid;

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Fire Wallet',
      theme: ThemeData(
        brightness: Brightness.light,
        /* light theme settings */
      ),
      darkTheme: ThemeData(
        brightness: Brightness.dark,
        /* dark theme settings */
      ),
      themeMode: ThemeMode.system,
      debugShowCheckedModeBanner: false,
      home: MyHomePage(uuid: uuid),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({
    super.key,
    required this.uuid,
  });

  final String uuid;

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

class _MyHomePageState extends State<MyHomePage> {
  int currentPageIndex = 0;
  String wallet = '';

  @override
  Widget build(BuildContext context) {
    final ThemeData theme = Theme.of(context);
    return Scaffold(
      bottomNavigationBar: NavigationBar(
        onDestinationSelected: (int index) {
          setState(() {
            currentPageIndex = index;
          });
        },
        selectedIndex: currentPageIndex,
        destinations: const <Widget>[
          NavigationDestination(
            selectedIcon: Icon(Icons.home),
            icon: Icon(Icons.home_outlined),
            label: 'Home',
          ),
          NavigationDestination(
              icon: Icon(Icons.call_received), label: 'Receive'),
          NavigationDestination(
            icon: Icon(Icons.send),
            label: 'Send',
          ),
          NavigationDestination(
            icon: Icon(Icons.text_format_rounded),
            label: 'Domains',
          ),
          NavigationDestination(
            icon: Icon(Icons.receipt),
            label: 'Transactions',
          ),
        ],
      ),
      body: SafeArea(
        child: IndexedStack(
          index: currentPageIndex,
          children: <Widget>[
            IndexPage(uuid: widget.uuid, wallet: wallet, setWallet: setWallet),
            ReceivePage(uuid: widget.uuid, wallet: wallet),
            SendPage(uuid: widget.uuid, wallet: wallet),
            DomainsPage(uuid: widget.uuid, wallet: wallet),
            TransactionsPage(uuid: widget.uuid, wallet: wallet),
          ],
        ),
      ),
    );
  }

  void setWallet(String s) {
    setState(() {
      wallet = s;
    });
  }
}