import 'package:flutter_test/flutter_test.dart';
import 'package:minstrel/update/client_update_provider.dart';

void main() {
  group('isVersionNewer (semver path)', () {
    test('strictly newer', () {
      expect(isVersionNewer('0.1.1', '0.1.0'), isTrue);
      expect(isVersionNewer('0.2.0', '0.1.99'), isTrue);
      expect(isVersionNewer('1.0.0', '0.99.99'), isTrue);
    });

    test('equal returns false', () {
      expect(isVersionNewer('0.1.0', '0.1.0'), isFalse);
    });

    test('older returns false', () {
      expect(isVersionNewer('0.1.0', '0.1.1'), isFalse);
      expect(isVersionNewer('0.1.0', '0.2.0'), isFalse);
    });

    test('strips leading v on either side', () {
      expect(isVersionNewer('v0.1.1', '0.1.0'), isTrue);
      expect(isVersionNewer('0.1.1', 'v0.1.0'), isTrue);
      expect(isVersionNewer('v0.1.0', 'v0.1.0'), isFalse);
    });

    test('honors prerelease ordering', () {
      // 0.1.0 > 0.1.0-rc.1 per semver
      expect(isVersionNewer('0.1.0', '0.1.0-rc.1'), isTrue);
      expect(isVersionNewer('0.1.0-rc.1', '0.1.0'), isFalse);
    });
  });

  group('isVersionNewer (date-style versions parse as semver)', () {
    // pub_semver is permissive with leading zeros — '2026.05.10'
    // parses as 2026.5.10. So date-style tags get strict ordering,
    // not the unparseable-fallback path.
    test('newer date → newer', () {
      expect(isVersionNewer('2026.05.10', '2026.05.09'), isTrue);
    });
    test('older date → not newer', () {
      expect(isVersionNewer('2026.05.09', '2026.05.10'), isFalse);
    });
    test('equal date → not newer', () {
      expect(isVersionNewer('2026.05.10', '2026.05.10'), isFalse);
    });
  });

  group('isVersionNewer (truly non-semver fallback)', () {
    // Branch-name-style strings (no version structure) hit the
    // try/catch fallback. Any string difference reads as "newer" so
    // operators see _something_ rather than silently miss updates.
    test('different unparseable strings → newer', () {
      expect(isVersionNewer('main', 'dev'), isTrue);
      expect(isVersionNewer('dev', 'main'), isTrue);
    });
    test('equal unparseable strings → not newer', () {
      expect(isVersionNewer('main', 'main'), isFalse);
    });
  });
}