// 2026-04-11 | verify_eating_times.dart | 用餐时段数据验证 | 获取eating_times.json数据结构
import 'dart:convert';
import 'dart:io';

void main() async {
  final uri = Uri.parse('http://eat.wktyl.com/api/assets/eating_times.json');
  final client = HttpClient();
  client.connectionTimeout = const Duration(seconds: 12);
  final request = await client.getUrl(uri);
  final response = await request.close();
  final body = await response.transform(utf8.decoder).join();
  client.close();

  final json = jsonDecode(body);
  if (json is List) {
    print('Total items: ${json.length}');
    for (final item in json.take(5)) {
      final m = item as Map<String, dynamic>;
      print('keys: ${m.keys.join(', ')}');
      print('item: ${jsonEncode(m)}');
      print('');
    }
  } else if (json is Map) {
    print('Top-level keys: ${json.keys.join(', ')}');
    print(jsonEncode(json).substring(0, 500));
  }
}