import 'package:abawo_bt_app/controller/bluetooth.dart';
import 'package:flutter_test/flutter_test.dart';

void main() {
  group('RssiAverager', () {
    test('averages samples within the configured window', () {
      final averager = RssiAverager(window: const Duration(milliseconds: 500));
      final startedAt = DateTime(2026);

      expect(averager.addSample('trainer', -80, startedAt), -80);
      expect(
        averager.addSample(
          'trainer',
          -70,
          startedAt.add(const Duration(milliseconds: 100)),
        ),
        -75,
      );
      expect(
        averager.addSample(
          'trainer',
          -60,
          startedAt.add(const Duration(milliseconds: 400)),
        ),
        -70,
      );
    });

    test('drops samples older than the configured window', () {
      final averager = RssiAverager(window: const Duration(milliseconds: 500));
      final startedAt = DateTime(2026);

      averager.addSample('trainer', -80, startedAt);
      averager.addSample(
        'trainer',
        -60,
        startedAt.add(const Duration(milliseconds: 250)),
      );

      expect(
        averager.addSample(
          'trainer',
          -40,
          startedAt.add(const Duration(milliseconds: 501)),
        ),
        -50,
      );
    });

    test('tracks devices independently', () {
      final averager = RssiAverager(window: const Duration(milliseconds: 500));
      final startedAt = DateTime(2026);

      averager.addSample('trainer-a', -80, startedAt);
      averager.addSample('trainer-a', -60, startedAt);

      expect(averager.addSample('trainer-b', -40, startedAt), -40);
    });

    test('clear removes previous samples', () {
      final averager = RssiAverager(window: const Duration(milliseconds: 500));
      final startedAt = DateTime(2026);

      averager.addSample('trainer', -80, startedAt);
      averager.clear();

      expect(averager.addSample('trainer', -40, startedAt), -40);
    });
  });
}