import 'dart:convert';
import 'package:http/http.dart' as http;
import 'auth.service.dart';

class ApiService {
  static const String _baseUrl = 'http://192.168.0.9:5000'; // cambia qui

  // Token memorizzato in memoria (per sessione)
  static String? _token;

  static String? get token => _token;

  static String get baseUrl => _baseUrl;



  // Login con Basic Auth e salvataggio token
  static Future<String> login(String username, String password) async {
    final url = Uri.parse('$_baseUrl/User/login');

    // Header con Basic Auth
    String basicAuth =
        'Basic ${base64Encode(utf8.encode('$username:$password'))}';

    final response = await http.get(
      url,
      headers: {
        'Authorization': basicAuth,
        'Accept': 'application/json',
      },
    );

    if (response.statusCode == 200) {
      final data = jsonDecode(response.body);
      _token = data['access_token']; // salva il token in memoria
      print('Token ricevuto: $_token'); // stampa in console
      AuthService.instance.saveToken(_token!);
      return '${response.statusCode}';
    } else {
      throw Exception(
          'Login fallito: ${response.statusCode} - ${response.body}');
    }
  }

  static Future<dynamic> checkLogin() async {
    final token = AuthService.instance.token;
    print('Token corrente: $token'); // stampa in console
    if (token == null) {
      print('Token non disponibile. Effettua il login prima.'); // stampa in console
      throw Exception('Token non disponibile. Effettua il login prima.');
    }

    final url = Uri.parse('$_baseUrl/Test/cklogin');
    final response = await http.get(
      url,
      headers: {
        'Authorization': 'Bearer $token',
        'Accept': 'application/json',
      },
    );

    if (response.statusCode == 200) {
      final object = jsonDecode(response.body);
      print('Risposta cklogin: $object'); // stampa in console
      return object;
    } else {
      throw Exception(
          'Errore checkLogin: ${response.statusCode} - ${response.body}');
    }
  }
}