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/**
 * 统一API响应结果封装
 *
 * @author Chill
 */
@Getter
@Setter
@ToString
@ApiModel(description = "返回信息")
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public class R<T> implements Serializable {

   private static final long serialVersionUID = 1L;

   @ApiModelProperty(value = "状态码", required = true)
   private int code;
   @ApiModelProperty(value = "是否成功", required = true)
   private boolean success;
   @ApiModelProperty(value = "承载数据")
   private T data;
   @ApiModelProperty(value = "返回消息", required = true)
   private String msg;

   private R(IResultCode resultCode) {
      this(resultCode, null, resultCode.getMessage());
   }

   private R(IResultCode resultCode, String msg) {
      this(resultCode, null, msg);
   }

   private R(IResultCode resultCode, T data) {
      this(resultCode, data, resultCode.getMessage());
   }

   private R(IResultCode resultCode, T data, String msg) {
      this(resultCode.getCode(), data, msg);
   }

   private R(int code, T data, String msg) {
      this.code = code;
      this.data = data;
      this.msg = msg;
      this.success = ResultCode.SUCCESS.code == code;
   }

   /**
    * 判断返回是否为成功
    *
    * @param result Result
    * @return 是否成功
    */
   public static boolean isSuccess(@Nullable R<?> result) {
      return Optional.ofNullable(result)
         .map(x -> ObjectUtil.nullSafeEquals(ResultCode.SUCCESS.code, x.code))
         .orElse(Boolean.FALSE);
   }

   /**
    * 判断返回是否为成功
    *
    * @param result Result
    * @return 是否成功
    */
   public static boolean isNotSuccess(@Nullable R<?> result) {
      return !R.isSuccess(result);
   }

   /**
    * 返回R
    *
    * @param data 数据
    * @param <T>  T 泛型标记
    * @return R
    */
   public static <T> R<T> data(T data) {
      return data(data, BladeConstant.DEFAULT_SUCCESS_MESSAGE);
   }

   /**
    * 返回R
    *
    * @param data 数据
    * @param msg  消息
    * @param <T>  T 泛型标记
    * @return R
    */
   public static <T> R<T> data(T data, String msg) {
      return data(HttpServletResponse.SC_OK, data, msg);
   }

   /**
    * 返回R
    *
    * @param code 状态码
    * @param data 数据
    * @param msg  消息
    * @param <T>  T 泛型标记
    * @return R
    */
   public static <T> R<T> data(int code, T data, String msg) {
      return new R<>(code, data, data == null ? BladeConstant.DEFAULT_NULL_MESSAGE : msg);
   }

   /**
    * 返回R
    *
    * @param msg 消息
    * @param <T> T 泛型标记
    * @return R
    */
   public static <T> R<T> success(String msg) {
      return new R<>(ResultCode.SUCCESS, msg);
   }

   /**
    * 返回R
    *
    * @param resultCode 业务代码
    * @param <T>        T 泛型标记
    * @return R
    */
   public static <T> R<T> success(IResultCode resultCode) {
      return new R<>(resultCode);
   }

   /**
    * 返回R
    *
    * @param resultCode 业务代码
    * @param msg        消息
    * @param <T>        T 泛型标记
    * @return R
    */
   public static <T> R<T> success(IResultCode resultCode, String msg) {
      return new R<>(resultCode, msg);
   }

   /**
    * 返回R
    *
    * @param msg 消息
    * @param <T> T 泛型标记
    * @return R
    */
   public static <T> R<T> failure(String msg) {
      return new R<>(ResultCode.FAILURE, msg);
   }


   /**
    * 返回R
    *
    * @param code 状态码
    * @param msg  消息
    * @param <T>  T 泛型标记
    * @return R
    */
   public static <T> R<T> failure(int code, String msg) {
      return new R<>(code, null, msg);
   }

   /**
    * 返回R
    *
    * @param resultCode 业务代码
    * @param <T>        T 泛型标记
    * @return R
    */
   public static <T> R<T> failure(IResultCode resultCode) {
      return new R<>(resultCode);
   }

   /**
    * 返回R
    *
    * @param resultCode 业务代码
    * @param msg        消息
    * @param <T>        T 泛型标记
    * @return R
    */
   public static <T> R<T> failure(IResultCode resultCode, String msg) {
      return new R<>(resultCode, msg);
   }

   /**
    * 返回R
    *
    * @param flag 成功状态
    * @return R
    */
   public static R status(boolean flag) {
      return flag ? success(BladeConstant.DEFAULT_SUCCESS_MESSAGE) : failure(BladeConstant.DEFAULT_FAILURE_MESSAGE);
   }

}