import 'dart:convert';

import 'package:flutter_test/flutter_test.dart';
import 'package:marianum_mobile/api/marianumcloud/webdav/queries/list_files/cacheable_file.dart';
import 'package:marianum_mobile/api/marianumcloud/webdav/queries/list_files/list_files_response.dart';
import 'package:marianum_mobile/view/pages/files/search/local_cache_search.dart';

CacheableFile _file({
  required String path,
  required String name,
  bool isDirectory = false,
}) => CacheableFile(path: path, isDirectory: isDirectory, name: name);

String _payload(ListFilesResponse listing) => jsonEncode(listing.toJson());

void main() {
  group('local cache index', () {
    final root = ListFilesResponse({
      _file(path: 'Documents/', name: 'Documents', isDirectory: true),
      _file(path: 'Photos/', name: 'Photos', isDirectory: true),
      _file(path: 'Reports.pdf', name: 'Reports.pdf'),
    });
    final documents = ListFilesResponse({
      _file(path: 'Documents/Tax-Report.pdf', name: 'Tax-Report.pdf'),
      _file(path: 'Documents/Notes.txt', name: 'Notes.txt'),
    });
    final index = buildLocalCacheIndex([
      _payload(root),
      _payload(documents),
    ]);

    test('matches by name case-insensitively across all caches', () {
      final hits = searchLocalCacheIndex(index, 'report');
      final paths = hits.map((f) => f.path).toSet();
      expect(paths, {'Reports.pdf', 'Documents/Tax-Report.pdf'});
    });

    test('returns empty list for empty query', () {
      expect(searchLocalCacheIndex(index, '   '), isEmpty);
    });

    test('respects pathScope prefix', () {
      final hits = searchLocalCacheIndex(
        index,
        'report',
        pathScope: ['Documents'],
      );
      expect(hits.map((f) => f.path), ['Documents/Tax-Report.pdf']);
    });

    test('skips payloads that are not folder listings', () {
      expect(buildLocalCacheIndex(['not json', '{"foo": 1}']), isEmpty);
    });

    test('deduplicates entries that appear in multiple cached folders', () {
      final shared = _file(
        path: 'Documents/Tax-Report.pdf',
        name: 'Tax-Report.pdf',
      );
      final dedupRoot = ListFilesResponse({shared});
      final dedupIndex = buildLocalCacheIndex([
        _payload(dedupRoot),
        _payload(dedupRoot),
      ]);
      expect(searchLocalCacheIndex(dedupIndex, 'tax'), hasLength(1));
    });
  });
}