import 'package:flutter_test/flutter_test.dart';
import 'package:hepan_everyday/domain/app_snapshot.dart';
import 'package:hepan_everyday/domain/app_settings.dart';

void main() {
  test('changing input list cannot change saved reminder choices', () {
    final choices = [5, 15];
    final settings = AppSettings(reminderOffsets: choices);
    choices.clear();
    expect(settings.reminderOffsets, [5, 15]);
    expect(() => settings.reminderOffsets.add(30), throwsUnsupportedError);
  });
  test('legacy single advance setting migrates to one selected time', () {
    final json = AppSnapshot(settings: AppSettings(reminderMinutes: 30))
        .toJson();
    (json['settings'] as Map).remove('reminderOffsets');
    final migrated = AppSnapshot.fromJson(json).toJson();
    expect((migrated['settings'] as Map)['reminderOffsets'], [30]);
  });
  test('selected times are normalized and survive snapshot round trip', () {
    final json = AppSnapshot().toJson();
    (json['settings'] as Map)['reminderOffsets'] = [15, 5, 15];
    final saved = AppSnapshot.fromJson(AppSnapshot.fromJson(json).toJson())
        .toJson();
    expect((saved['settings'] as Map)['reminderOffsets'], [5, 15]);
  });
  for (final invalid in [
    [],
    [0],
    [7],
    ['15'],
    [15, 90],
  ]) {
    test('invalid selected reminder times $invalid are rejected', () {
      final json = AppSnapshot().toJson();
      (json['settings'] as Map)['reminderOffsets'] = invalid;
      expect(() => AppSnapshot.fromJson(json), throwsFormatException);
    });
  }
}