import 'package:flutter_test/flutter_test.dart';
import 'package:focus_seed/src/core/ambience.dart';

void main() {
  group('dayPhaseFor', () {
    test('uses the documented local time boundaries', () {
      expect(dayPhaseFor(DateTime(2026, 6, 11, 4, 59)), DayPhase.night);
      expect(dayPhaseFor(DateTime(2026, 6, 11, 5)), DayPhase.dawn);
      expect(dayPhaseFor(DateTime(2026, 6, 11, 10)), DayPhase.day);
      expect(dayPhaseFor(DateTime(2026, 6, 11, 17)), DayPhase.dusk);
      expect(dayPhaseFor(DateTime(2026, 6, 11, 21)), DayPhase.night);
    });

    test('schedules the next boundary without background polling', () {
      expect(
        nextDayPhaseBoundary(DateTime(2026, 6, 11, 21, 15)),
        DateTime(2026, 6, 12, 5),
      );
      expect(
        nextDayPhaseBoundary(DateTime(2026, 6, 11, 8)),
        DateTime(2026, 6, 11, 10),
      );
    });
  });
}