import 'dart:io';

import 'package:flutter_test/flutter_test.dart';

/// 分层边界：业务层不认厂商。
///
/// `lib/modules`、`lib/core`、`lib/data` 只能 import `lib/devices/*.dart`（中枢）
/// 与 `device_plugin_interface`，**不能** import `lib/devices/<vendor>/…`，
/// 也不能出现厂商类名。新接一种芯片只动 `lib/devices/<vendor>/` 与 bootstrap。
void main() {
  final vendorImport = RegExp(r"devices/(bes|holder|eaicar)/");
  final vendorTypes = RegExp(
      r'\b(BesBluetoothService|BesDevicePlugin|BesDeviceSession|BesDeviceAuth|'
      r'HolderDeviceService|HolderDevicePlugin|HolderDeviceSession|'
      r'EchoMeetDeviceSdk|BluetoothManager\(\))');
  final vendorPackages = RegExp(
      r"package:(bluetooth_manager|echomeet_device_sdk|bes_ota_manager)/");

  List<File> dartFiles(String dir) => Directory(dir)
      .listSync(recursive: true)
      .whereType<File>()
      .where((f) => f.path.endsWith('.dart'))
      .toList();

  /// 只看代码，注释里提到厂商名不算
  String codeOnly(File f) => f
      .readAsLinesSync()
      .where((l) => !l.trimLeft().startsWith('//'))
      .map((l) => l.replaceFirst(RegExp(r'\s//.*$'), ''))
      .join('\n');

  test('lib/modules、lib/core、lib/data 不引用任何厂商实现', () {
    final offenders = <String>[];
    for (final dir in ['lib/modules', 'lib/core', 'lib/data']) {
      for (final f in dartFiles(dir)) {
        final src = codeOnly(f);
        if (vendorImport.hasMatch(src) ||
            vendorTypes.hasMatch(src) ||
            vendorPackages.hasMatch(src)) {
          offenders.add(f.path);
        }
      }
    }
    expect(offenders, isEmpty,
        reason: '这些文件绕过了 DeviceHub 直接碰厂商实现：\n${offenders.join('\n')}');
  });

  test('厂商目录之间互不引用', () {
    final offenders = <String>[];
    for (final f in dartFiles('lib/devices')) {
      final parts = f.path.split('/');
      final idx = parts.indexOf('devices');
      if (idx < 0 || idx + 2 >= parts.length) continue; // 顶层文件不限制
      final myVendor = parts[idx + 1];
      final src = codeOnly(f);
      for (final m in vendorImport.allMatches(src)) {
        if (m.group(1) != myVendor) offenders.add('${f.path} -> ${m.group(0)}');
      }
    }
    expect(offenders, isEmpty, reason: offenders.join('\n'));
  });
}