import 'package:flutter_test/flutter_test.dart';
import 'package:new_budget/src/features/notification_parsing/data/parser/dedup.dart';
import 'package:new_budget/src/features/notification_parsing/data/parser/merchant_normalizer.dart';

void main() {
  group('normalizeMerchant', () {
    test('strips tail after star', () {
      expect(normalizeMerchant('WBSPB*MOSCOW'), 'WBSPB');
    });

    test('strips trailing point-of-sale digits', () {
      expect(normalizeMerchant('PYATEROCHKA 2351'), 'PYATEROCHKA');
    });

    test('collapses internal whitespace and trims', () {
      expect(normalizeMerchant('  MAGNIT   U   '), 'MAGNIT U');
    });

    test('falls back to trimmed raw if normalization empties it', () {
      expect(normalizeMerchant('  123  '), '123');
    });
  });

  group('computeDedupHash', () {
    test('is deterministic', () {
      final a = computeDedupHash('pkg', 'Покупка 1240 ₽');
      final b = computeDedupHash('pkg', 'Покупка 1240 ₽');
      expect(a, b);
    });

    test('differs for different body', () {
      final a = computeDedupHash('pkg', 'Покупка 1240 ₽');
      final b = computeDedupHash('pkg', 'Покупка 1250 ₽');
      expect(a, isNot(b));
    });

    test('differs for different package', () {
      final a = computeDedupHash('pkg1', 'same');
      final b = computeDedupHash('pkg2', 'same');
      expect(a, isNot(b));
    });

    test('fixed-width 16-hex output', () {
      final h = computeDedupHash('pkg', 'x');
      expect(h.length, 16);
      expect(RegExp(r'^[0-9a-f]{16}$').hasMatch(h), isTrue);
    });
  });
}