import 'dart:io' show Platform;
import 'package:flutter_test/flutter_test.dart';
import 'package:fluttery/src/system/environment/environment_impl.dart';
import 'package:package_info_plus/package_info_plus.dart';

void main() {
  setUp(() {
    PackageInfo.setMockInitialValues(
      appName: 'Test App',
      packageName: 'com.example.testapp',
      version: '1.2.3',
      buildNumber: '42',
      buildSignature: 'mock-signature',
      installerStore: 'mock-store',
    );
  });

  group('EnvironmentImpl', () {
    test('defaults before loadPackageInfo()', () {
      final env = EnvironmentImpl();

      expect(env.appName, equals('Unknown'));
      expect(env.packageName, equals('Unknown'));
      expect(env.version, equals('0.0.0'));
      expect(env.buildNumber, equals('0'));
    });

    test('loadPackageInfo() populates fields from PackageInfo', () async {
      final env = EnvironmentImpl();
      await env.loadPackageInfo();

      expect(env.appName, equals('Test App'));
      expect(env.packageName, equals('com.example.testapp'));
      expect(env.version, equals('1.2.3'));
      expect(env.buildNumber, equals('42'));
    });

    test('platform flags mirror dart:io Platform', () {
      final env = EnvironmentImpl();

      expect(env.isAndroid, equals(Platform.isAndroid));
      expect(env.isIOS, equals(Platform.isIOS));
    });

    test('build mode flags reflect Flutter constants', () {
      final env = EnvironmentImpl();

      // In unit tests, this should typically be: debug=true, release/profile=false.
      expect(env.isDebug, isTrue);
      expect(env.isRelease, isFalse);
      expect(env.isProfile, isFalse);
    });
  });
}