import 'package:common_utils/common_utils.dart';

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

abstract class JsonTool {
  static bool stringToBoolean(String? value) {
    if (value == null) return false;
    return value == '1';
  }

  static String? booleanToString(bool? value) {
    if (value == null) return null;
    return value ? '1' : '0';
  }

  static int? stringToInt(String? value) {
    if (value == null) return null;
    return int.tryParse(value);
  }

  /// 兼容后端 Long 以字符串或数字返回的单值场景。
  static int anyToInt(Object? value) {
    if (value is int) return value;
    if (value is num) return value.toInt();
    final parsed = int.tryParse(value.toString());
    if (parsed == null) throw const FormatException('数字格式错误');
    return parsed;
  }

  /// 兼容可选 Long 以字符串、数字或空值返回的场景，空值保持为空。
  static int? anyToNullableInt(Object? value) {
    if (value == null) return null;
    return anyToInt(value);
  }

  /// 兼容后端 BigDecimal 以字符串或数字返回的可选小数。
  static double? anyToNullableDouble(Object? value) {
    if (value == null) return null;
    if (value is num) return value.toDouble();
    return double.tryParse(value.toString());
  }

  static String? intToString(int? value) {
    if (value == null) return null;
    return value.toString();
  }

  static String? anyToString(dynamic value) {
    if (value == null) return null;
    return value.toString();
  }

  /// 将后端必填 Long 或字符串标识转换为非空字符串；缺失或空值时在模型边界直接拒绝。
  static String anyToRequiredString(Object? value) {
    final result = anyToString(value)?.trim();
    if (result == null || result.isEmpty) {
      throw const FormatException('必填标识不能为空');
    }
    return result;
  }

  /// 将 Flutter 时间转换为 Java 后端 LocalDateTime 的统一请求格式，不携带时区和小数秒。
  static String dateTimeToServiceString(DateTime value) =>
      DateUtil.formatDate(value, format: DateFormats.full);

  /// 后端为避免 19 位 Long 在部分客户端丢失精度，可能把 ID 序列化为字符串。
  /// 这里同时兼容字符串和数字，忽略无法安全转换的异常项。
  static List<int> anyListToIntList(Object? value) {
    if (value is! List) return const [];
    return value
        .map((item) {
          if (item is int) return item;
          if (item is num) return item.toInt();
          return int.tryParse(item.toString());
        })
        .whereType<int>()
        .toList(growable: false);
  }

  static Map<String, dynamic>? anyToMap(dynamic value) {
    if (value == null) return null;
    return dynamic as Map<String, dynamic>?;
  }

  static OrderType? stringToOrderType(String? value) {
    final byCode = OrderType.values.fromCode(value);
    if (byCode != null) return byCode;
    if (value == null) return null;
    final name = value.contains('.') ? value.split('.').last : value;
    return OrderType.values.byName(name);
  }

  static String? orderTypeToString(OrderType? value) {
    if (value == null) return null;
    return value.code;
  }

  static OrderPayType? stringToOrderPayType(String? value) {
    final byCode = OrderPayType.values.fromCode(value);
    if (byCode != null) return byCode;
    if (value == null) return null;
    final name = value.contains('.') ? value.split('.').last : value;
    return OrderPayType.values.byName(name);
  }

  static String? orderPayTypeToString(OrderPayType? value) {
    if (value == null) return null;
    return value.code;
  }

  static WalletActType? stringToWalletActType(String? value) {
    final byCode = WalletActType.values.fromCode(value);
    if (byCode != null) return byCode;
    if (value == null) return null;
    final name = value.contains('.') ? value.split('.').last : value;
    return WalletActType.values.byName(name);
  }

  static String? walletActTypeToString(WalletActType? value) {
    if (value == null) return null;
    return value.code;
  }

  static DiscountsType? stringToDiscountsType(String? value) {
    final byCode = DiscountsType.values.fromCode(value);
    if (byCode != null) return byCode;
    if (value == null) return null;
    final name = value.contains('.') ? value.split('.').last : value;
    return DiscountsType.values.byName(name);
  }

  static String? discountsTypeToString(DiscountsType? value) {
    if (value == null) return null;
    return value.code;
  }

  static ProductHourType? stringToProductHourType(String? value) {
    final byCode = ProductHourType.values.fromCode(value);
    if (byCode != null) return byCode;
    if (value == null) return null;
    final name = value.contains('.') ? value.split('.').last : value;
    return ProductHourType.values.byName(name);
  }

  static String? productHourTypeToString(ProductHourType? value) {
    if (value == null) return null;
    return value.code;
  }
}