import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;

void main() {
    runApp(const App());
}

class App extends StatelessWidget {
    const App({super.key});

    Future<bool> checkApiConnection() async {
        final res = await http.get(
            Uri.parse('http://localhost:5000/db'),
        );

        final Map<String, dynamic> data = jsonDecode(res.body);
        return data['value'] == 777;
    }

    @override
    Widget build(BuildContext context) {
        return MaterialApp(
            home: Scaffold(
                body: Center(
                    child: FutureBuilder<bool>(
                        future: checkApiConnection(),
                        builder: (context, snapshot) {
                            if (snapshot.connectionState == ConnectionState.waiting) {
                                return const CircularProgressIndicator();
                            }
                            if (snapshot.hasError) {
                                return const Text(
                                    'API SERVER CONNECTION FAILED',
                                    style: TextStyle(
                                        fontSize: 20,
                                        fontWeight: FontWeight.bold,
                                        color: Colors.red,
                                    ),
                                );
                            }

                            return const Text(
                                'API SERVER CONNECTED',
                                style: TextStyle(
                                    fontSize: 22,
                                    fontWeight: FontWeight.bold,
                                    color: Colors.green,
                                    letterSpacing: 1.2,
                                ),
                            );
                        },
                    ),
                ),
            ),
        );
    }
}