import 'dart:convert';
import 'dart:typed_data';

import 'package:common_utils/common_utils.dart';
import 'package:get/get.dart';
import 'package:flutter_cache_manager/flutter_cache_manager.dart';

import 'package:pj_supermarket_cloud/common/index.dart';

abstract class AppSettingTool {
  static const String _tag = "app配置工具";

  static const String _settingKey = "setting";
  static const String _terminalMenuOrderKey = "terminalMenuOrder";
  static const String _hiddenTerminalMenusKey = "hiddenTerminalMenus";
  static const String _payTypeOrderKey = "payTypeOrder";

  // 自定义缓存管理器
  static final CacheManager _settingCache = CacheManager(
    Config(
      'setting_cache',
      stalePeriod: const Duration(days: 7),
      maxNrOfCacheObjects: 10,
    ),
  );

  static Future<void> removeSettingCache() async {
    await _settingCache.emptyCache();
  }

  static Future<SettingEntity> _getSetting() async {
    // 尝试从缓存获取
    final fileInfo = await _settingCache.getFileFromCache(_settingKey);
    if (fileInfo != null) {
      final content = await fileInfo.file.readAsString();
      if (ObjectUtil.isNotEmpty(content)) {
        return SettingEntity.fromJson(json.decode(content));
      }
    }
    final app = Get.find<AppControl>();
    final settingDao = app.dataBase.getSettingDao;
    final setting = await settingDao.get();
    if (setting == null) {
      final initSysInfo = SysSetting(
        sysType: SysType.CANTEEN,
        androidId: await AppSysTool.getAndroidId(),
        sqlAddress: "",
      );
      final initUserInfo = UserSetting(
        username: "",
        password: "",
      );
      SettingEntity addObj = SettingEntity(
        userJson: json.encode(initUserInfo.toJson()),
        sysJson: json.encode(initSysInfo.toJson()),
      );
      final addId = await settingDao.save(addObj);
      if (ObjectUtil.isEmpty(addId)) {
        throw Exception("|$_tag|_getSetting新增错误");
      }
      addObj.id = addId;
      return addObj;
    }
    return setting;
  }

  static Future<bool> _setSetting({
    SysSetting? sysJson,
    UserSetting? userJson,
    CanteenExtraPriceSetting? canteenExtraPriceConfig,
  }) async {
    if (ObjectUtil.isEmpty(sysJson) &&
        ObjectUtil.isEmpty(userJson) &&
        ObjectUtil.isEmpty(canteenExtraPriceConfig)) {
      return false;
    }
    final app = Get.find<AppControl>();
    final settingDao = app.dataBase.getSettingDao;
    SettingEntity? setting = await settingDao.get();
    if (setting == null) {
      logger.e("|$_tag|_setSetting新增错误settingDao.get()方法返回为null");
      return false;
    }
    if (sysJson != null) {
      final current = Map<String, dynamic>.from(json.decode(setting.sysJson));
      // sysJson 允许保存不涉及数据库结构的终端 UI 扩展配置，更新业务设置时必须保留这些键。
      setting.sysJson = json.encode({...current, ...sysJson.toJson()});
    }
    if (userJson != null) {
      setting.userJson = json.encode(userJson.toJson());
    }
    if (canteenExtraPriceConfig != null) {
      setting.canteenExtraPriceConfigJson = json.encode(
        canteenExtraPriceConfig.toJson(),
      );
    }
    await settingDao.edit(setting);
    await _settingCache.putFile(
      _settingKey,
      Uint8List.fromList(utf8.encode(json.encode(setting.toJson()))),
      fileExtension: 'json',
    );
    return true;
  }

  static Future<SysSetting> getSysSetting() async {
    final setting = await _getSetting();
    return SysSetting.fromJson(json.decode(setting.sysJson));
  }

  static Future<UserSetting> getUserSetting() async {
    final setting = await _getSetting();
    return UserSetting.fromJson(json.decode(setting.userJson));
  }

  static Future<CanteenExtraPriceSetting?> getCanteenExtraPriceConfig() async {
    final setting = await _getSetting();
    if (ObjectUtil.isEmpty(setting.canteenExtraPriceConfigJson)) {
      return null;
    }
    return CanteenExtraPriceSetting.fromJson(
      json.decode(setting.canteenExtraPriceConfigJson!),
    );
  }

  static Future<void> setSysSetting(SysSetting sysInfo) async {
    await _setSetting(sysJson: sysInfo);
  }

  static Future<void> setUserSetting(UserSetting userInfo) async {
    final globalUserInfo = await getUserSetting();
    if (globalUserInfo == userInfo) return;
    if (ObjectUtil.isEmpty(userInfo.tenantId) &&
        ObjectUtil.isNotEmpty(globalUserInfo.tenantId)) {
      userInfo.tenantId = globalUserInfo.tenantId;
    }
    await _setSetting(userJson: userInfo);
  }

  static Future<void> setCanteenExtraPriceConfig(
    CanteenExtraPriceSetting canteenExtraPriceConfig,
  ) async {
    final config = await getCanteenExtraPriceConfig();
    if (config == canteenExtraPriceConfig) return;
    await _setSetting(canteenExtraPriceConfig: canteenExtraPriceConfig);
  }

  /// 读取左侧菜单的顺序和隐藏状态，未知或缺失项由控制器按默认菜单补齐。
  static Future<({List<String> order, Set<String> hidden})>
      getTerminalMenuPreferences() async {
    final setting = await _getSetting();
    final sysJson = Map<String, dynamic>.from(json.decode(setting.sysJson));
    final order = (sysJson[_terminalMenuOrderKey] as List<dynamic>?)
            ?.whereType<String>()
            .toList() ??
        const <String>[];
    final hidden = (sysJson[_hiddenTerminalMenusKey] as List<dynamic>?)
            ?.whereType<String>()
            .toSet() ??
        const <String>{};
    return (order: order, hidden: hidden);
  }

  /// 菜单布局属于设备级 UI 设置，直接复用 setting 表中的 sysJson，避免增加数据库字段和迁移。
  static Future<void> setTerminalMenuPreferences({
    required List<String> order,
    required Set<String> hidden,
  }) async {
    final app = Get.find<AppControl>();
    final settingDao = app.dataBase.getSettingDao;
    final setting = await settingDao.get();
    if (setting == null) {
      throw StateError('终端设置尚未初始化');
    }
    final sysJson = Map<String, dynamic>.from(json.decode(setting.sysJson));
    sysJson[_terminalMenuOrderKey] = order;
    sysJson[_hiddenTerminalMenusKey] = hidden.toList();
    setting.sysJson = json.encode(sysJson);
    await settingDao.edit(setting);
    await _settingCache.putFile(
      _settingKey,
      Uint8List.fromList(utf8.encode(json.encode(setting.toJson()))),
      fileExtension: 'json',
    );
  }

  /// 读取支付方式的完整顺序；显隐仍由 SysSetting.usePayDisplayType 维护。
  static Future<List<String>> getPayTypeOrder() async {
    final setting = await _getSetting();
    final sysJson = Map<String, dynamic>.from(json.decode(setting.sysJson));
    return (sysJson[_payTypeOrderKey] as List<dynamic>?)
            ?.whereType<String>()
            .toList() ??
        const <String>[];
  }

  /// 支付排序属于终端 UI 扩展配置，与现有支付显隐和默认方式一起原子保存。
  static Future<void> setPayTypePreferences({
    required SysSetting sysInfo,
    required List<OrderPayDisplayType> order,
  }) async {
    // 在首次异步等待前生成快照，避免连续拖动时后一次修改污染本次落盘内容。
    final nextSysJson = sysInfo.toJson();
    final visiblePayTypes = nextSysJson['usePayDisplayType'];
    final defaultPayType = nextSysJson['defaultPayDisplayType'];
    final orderCodes = order.map((item) => item.code).toList();
    final app = Get.find<AppControl>();
    final settingDao = app.dataBase.getSettingDao;
    final setting = await settingDao.get();
    if (setting == null) {
      throw StateError('终端设置尚未初始化');
    }
    final current = Map<String, dynamic>.from(json.decode(setting.sysJson));
    current['usePayDisplayType'] = visiblePayTypes;
    current['defaultPayDisplayType'] = defaultPayType;
    current[_payTypeOrderKey] = orderCodes;
    setting.sysJson = json.encode(current);
    await settingDao.edit(setting);
    await _settingCache.putFile(
      _settingKey,
      Uint8List.fromList(utf8.encode(json.encode(setting.toJson()))),
      fileExtension: 'json',
    );
  }

  // 根据后台返回的数据更新到缓存
  static Future<void> updateSysInfoByService(ServiceHardware data) async {
    if (ObjectUtil.isEmpty(data)) {
      final setting = SysSetting(
        sysType: SysType.CANTEEN,
        androidId: await AppSysTool.getAndroidId(),
        sqlAddress: await AppFileTool.getDatabaseBackupPath(),
      );
      await _setSetting(sysJson: setting);
      return;
    }
    final sysSetting = await AppSettingTool.getSysSetting();
    final id = data.id;
    if (ObjectUtil.isNotEmpty(id)) {
      sysSetting.serviceId = id;
    }
    final name = data.name;
    if (ObjectUtil.isNotEmpty(name)) {
      sysSetting.serviceName = name;
    }
    final type = data.type.toString();
    if (ObjectUtil.isNotEmpty(type)) {
      final t = SysType.values.fromCode(type);
      if (ObjectUtil.isNotEmpty(t)) {
        sysSetting.sysType = t!;
      }
    }
    final merchantId = data.merchantId;
    if (ObjectUtil.isNotEmpty(merchantId)) {
      sysSetting.serviceMerchantId = merchantId;
    }
    final hardGroupId = data.hardGroupId;
    if (ObjectUtil.isNotEmpty(hardGroupId)) {
      sysSetting.hardGroupId = hardGroupId;
    }
    final merchantDeptId = data.merchantDeptId;
    if (ObjectUtil.isNotEmpty(merchantDeptId)) {
      sysSetting.merchantDeptId = merchantDeptId;
    }
    final mqClientId = data.mqClientId;
    if (ObjectUtil.isNotEmpty(mqClientId)) {
      sysSetting.mqClientId = mqClientId;
    }
    final mainTopic = data.mainTopic;
    if (ObjectUtil.isNotEmpty(mainTopic)) {
      sysSetting.mainTopic = mainTopic;
    }
    final mqSocketAddress = data.mqSocketAddress;
    if (ObjectUtil.isNotEmpty(mqSocketAddress)) {
      sysSetting.mqSocketAddress = mqSocketAddress;
    }
    final mqSocketPort = data.mqSocketPort;
    if (ObjectUtil.isNotEmpty(mqSocketPort)) {
      sysSetting.mqSocketPort = mqSocketPort;
    }
    final mqUsername = data.mqUsername;
    if (ObjectUtil.isNotEmpty(mqUsername)) {
      sysSetting.mqUsername = mqUsername;
    }
    final mqPassword = data.mqPassword;
    if (ObjectUtil.isNotEmpty(mqPassword)) {
      sysSetting.mqPassword = mqPassword;
    }
    final faceAppId = data.faceAppId;
    if (ObjectUtil.isNotEmpty(faceAppId)) {
      sysSetting.faceAppId = faceAppId;
    }
    final faceSdkKey = data.faceSdkKey;
    if (ObjectUtil.isNotEmpty(faceSdkKey)) {
      sysSetting.faceSdkKey = faceSdkKey;
    }
    final faceActiveKey = data.faceActiveKey;
    if (ObjectUtil.isNotEmpty(faceActiveKey)) {
      sysSetting.faceActiveKey = faceActiveKey;
    }
    final android = data.uniqueCode;
    if (ObjectUtil.isNotEmpty(android)) {
      sysSetting.androidId = android;
    }
    sysSetting.syncTime = DateTime.now();
    await _setSetting(sysJson: sysSetting);
  }

  /// 绑定设备信息
  static Future<bool> bindSys(int serviceId) async {
    var androidId = await AppSysTool.getAndroidId();
    if (ObjectUtil.isEmpty(androidId)) return false;
    final pa = {"id": serviceId, "uniqueCode": androidId};
    try {
      final data = await HardApi.bind(pa);
      if (data == null) {
        logger.e("绑定设备信息pa:|${jsonEncode(pa)}|;res:$data;");
        return false;
      }
      await AppSettingTool.updateSysInfoByService(data);
      return true;
    } catch (e, stack) {
      logger.e("|$_tag|绑定信息错误error:|$e|stack:$stack");
    }
    return false;
  }
}