ajy/openspec/aijiuyiBackend/src/main/java/com/aijiuyi/admin/common/ApiResponse.java

package com.aijiuyi.admin.common;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

/**
 * 统一 REST 响应体：code（0 成功）、message、data。
 *
 * @param <T> 业务数据类型
 */
@Data
@NoArgsConstructor
@AllArgsConstructor
public class ApiResponse<T> {

    private int code;
    private String message;
    private T data;

    public static <T> ApiResponse<T> ok(T data) {
        return new ApiResponse<>(0, "OK", data);
    }

    public static <T> ApiResponse<T> ok() {
        return ok(null);
    }

    public static <T> ApiResponse<T> fail(int code, String message) {
        return new ApiResponse<>(code, message, null);
    }
}