import 'package:flutter_test/flutter_test.dart';
import 'package:worldhopper/models/server.dart';

// Kavita URL pattern extracted from KavitaServerSoftware for isolated testing
// without needing to construct the full OPDSServerSoftware dependency tree.
final _urlPattern = RegExp(
  r'/api/opds/[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}',
);

bool _detectFromUrl(Server server) => _urlPattern.hasMatch(server.url);

Server _server(String url) => Server(
      id: 's1',
      name: 'Test',
      url: url,
      createdAt: DateTime(2024),
    );

void main() {
  group('Kavita detectFromUrl', () {
    test('detects standard Kavita OPDS URL', () {
      final server = _server(
        'https://kavita.example.com/api/opds/12345678-1234-1234-1234-123456789abc',
      );
      expect(_detectFromUrl(server), isTrue);
    });

    test('detects Kavita URL with trailing path', () {
      final server = _server(
        'https://kavita.example.com/api/opds/12345678-1234-1234-1234-123456789abc/series/1',
      );
      expect(_detectFromUrl(server), isTrue);
    });

    test('rejects plain OPDS URL', () {
      final server = _server('https://example.com/opds');
      expect(_detectFromUrl(server), isFalse);
    });

    test('rejects URL with invalid UUID', () {
      final server = _server(
        'https://kavita.example.com/api/opds/not-a-uuid',
      );
      expect(_detectFromUrl(server), isFalse);
    });

    test('rejects URL with /api/ but no opds path', () {
      final server = _server(
        'https://kavita.example.com/api/library',
      );
      expect(_detectFromUrl(server), isFalse);
    });

    test('detects uppercase hex UUID', () {
      final server = _server(
        'https://kavita.example.com/api/opds/ABCDEF12-1234-5678-9ABC-DEF012345678',
      );
      expect(_detectFromUrl(server), isTrue);
    });
  });
}