yl-backend/src/main/java/com/guwan/backend/common/SearchResult.java

package com.guwan.backend.common;

import lombok.Data;

import java.text.SimpleDateFormat;
import java.util.Date;

@Data
public class SearchResult<T> {
    private Integer code;
    private String message;
    private T data;
    private Long total;
    private String time;

    public SearchResult() {
        this.time = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date());
    }

    public static <T> SearchResult<T> success() {
        SearchResult<T> result = new SearchResult<>();
        result.setCode(200);
        result.setMessage("操作成功");
        return result;
    }

    public static <T> SearchResult<T> success(T data) {
        SearchResult<T> result = new SearchResult<>();
        result.setCode(200);
        result.setMessage("操作成功");
        result.setData(data);
        return result;
    }

    public static <T> SearchResult<T> success(T data, Long total) {
        SearchResult<T> result = new SearchResult<>();
        result.setCode(200);
        result.setMessage("操作成功");
        result.setData(data);
        result.setTotal(total);
        return result;
    }

    public static <T> SearchResult<T> success(String message, T data) {
        SearchResult<T> result = new SearchResult<>();
        result.setCode(200);
        result.setMessage(message);
        result.setData(data);
        return result;
    }

    public static <T> SearchResult<T> error(String message) {
        SearchResult<T> result = new SearchResult<>();
        result.setCode(500);
        result.setMessage(message);
        return result;
    }

    public static <T> SearchResult<T> error(Integer code, String message) {
        SearchResult<T> result = new SearchResult<>();
        result.setCode(code);
        result.setMessage(message);
        return result;
    }

    public static <T> SearchResult<T> error(Integer code, String message, T data) {
        SearchResult<T> result = new SearchResult<>();
        result.setCode(code);
        result.setMessage(message);
        result.setData(data);
        return result;
    }

    // 常用状态码
    public static final int SUCCESS = 200;
    public static final int ERROR = 500;
    public static final int UNAUTHORIZED = 401;
    public static final int FORBIDDEN = 403;
    public static final int NOT_FOUND = 404;
    public static final int VALIDATE_FAILED = 400;

    // 业务状态码
    public static <T> SearchResult<T> validateFailed(String message) {
        return error(VALIDATE_FAILED, message);
    }

    public static <T> SearchResult<T> unauthorized(String message) {
        return error(UNAUTHORIZED, message);
    }

    public static <T> SearchResult<T> forbidden(String message) {
        return error(FORBIDDEN, message);
    }

    public static <T> SearchResult<T> notFound(String message) {
        return error(NOT_FOUND, message);
    }
}