import 'dart:convert';

import 'package:go_router/go_router.dart';

import 'app_router.dart';

/// 统一将 Scheme、Universal Link 和推送 payload 收敛为应用内路由。
abstract final class DeepLinkService {
  static void handle(String raw) {
    final target = _route(raw);
    if (target != null) rootNavigatorKey.currentContext?.go(target);
  }

  static String? _route(String raw) {
    var source = raw.trim();
    try {
      final json = jsonDecode(source);
      if (json is Map) {
        source = '${json['deep_link'] ?? json['url'] ?? json['link'] ?? ''}';
      }
    } catch (_) {}
    final uri = Uri.tryParse(source);
    if (uri == null) return null;
    if (uri.scheme == 'jinzhi') {
      final path = uri.path.isEmpty ? '/assets' : uri.path;
      return _allowed(path)
          ? '$path${uri.hasQuery ? '?${uri.query}' : ''}'
          : null;
    }
    if ((uri.scheme == 'https' || uri.scheme == 'http') && _allowed(uri.path)) {
      return '${uri.path}${uri.hasQuery ? '?${uri.query}' : ''}';
    }
    return null;
  }

  static bool _allowed(String path) => const {
    '/assets',
    '/market',
    '/news',
    '/profile',
    '/settings',
  }.contains(path);
}