/**
 * 统一错误模型：业务错误码 / HTTP 状态码 / 网络异常。
 * 继承 Error 以符合 ArkTS 的 throw 限制（只能抛 Error 及其子类）。
 */
export class ApiError extends Error {
  readonly code: number;
  readonly isNetworkError: boolean;

  constructor(code: number, message: string, isNetworkError: boolean = false) {
    super(message);
    this.code = code;
    this.isNetworkError = isNetworkError;
  }

  static network(detail: string): ApiError {
    return new ApiError(-1, `网络请求失败: ${detail}`, true);
  }

  static http(statusCode: number): ApiError {
    return new ApiError(statusCode, `HTTP 状态码异常: ${statusCode}`, false);
  }

  static business(code: number, message: string): ApiError {
    return new ApiError(code, message, false);
  }
}