import 'package:flutter/cupertino.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:please_pay_me/theme/theme.dart';

void main() {
  group('ThemePreference', () {
    test('parse falls back to system', () {
      expect(ThemePreference.parse(null), ThemePreference.system);
      expect(ThemePreference.parse('nope'), ThemePreference.system);
      expect(ThemePreference.parse('light'), ThemePreference.light);
      expect(ThemePreference.parse('dark'), ThemePreference.dark);
    });

    test('resolve follows the platform only in system mode', () {
      expect(ThemePreference.system.resolve(Brightness.dark), Brightness.dark);
      expect(ThemePreference.light.resolve(Brightness.dark), Brightness.light);
      expect(ThemePreference.dark.resolve(Brightness.light), Brightness.dark);
    });
  });

  group('systemUiOverlayFor', () {
    test('dark paints the Android nav bar transparent black without a scrim', () {
      final overlay = systemUiOverlayFor(Brightness.dark);
      expect(overlay.systemNavigationBarColor, const Color(0x00000000));
      expect(overlay.systemNavigationBarContrastEnforced, isFalse);
      expect(overlay.systemNavigationBarIconBrightness, Brightness.light);
    });
  });

  group('ThemeController', () {
    test('restore and setPreference persist independently of session', () async {
      final store = MemoryThemeStore('dark');
      final controller = ThemeController(store: store);

      await controller.restore();
      expect(controller.preference, ThemePreference.dark);

      await controller.setPreference(ThemePreference.light);
      expect(controller.preference, ThemePreference.light);
      expect(store.value, 'light');
      expect(controller.resolve(Brightness.dark), Brightness.light);
    });
  });
}