package com.dy.common.util;

import lombok.Data;
import oshi.hardware.GlobalMemory;

import java.text.DecimalFormat;

/**
 * @Author: liurunyu
 * @Date: 2024/8/2 13:42
 * @Description
 */
public class SysMemoryUtil {

    /**
     * 内存信息
     */
    public static MemInfoVo info(GlobalMemory memory) {
        MemInfoVo vo = new MemInfoVo() ;
        vo.setTotal(toGbytes(memory.getTotal()));
        vo.setUsed(toGbytes(memory.getTotal() - memory.getAvailable()));
        vo.setFree(toGbytes(memory.getAvailable()));
        return vo ;
    }

    private static double toGbytes(double value){
        return value/1000000000.0 ;
    }

    @Data
    public static class MemInfoVo {
        /**
         * 内存总量
         */
        public double total;

        /**
         * 已用内存
         */
        public double used;

        /**
         * 剩余内存
         */
        public double free;

        public String toString(){
            DecimalFormat df = new DecimalFormat("#.####"); // 设定格式
            StringBuilder sb = new StringBuilder() ;
            sb.append("   内存信息：\n");
            sb.append("      内存总量(G)：" + df.format(total) + "\n");
            sb.append("      已用内存(G)：" + df.format(used) + "\n");
            sb.append("      剩余内存(G)：" + df.format(free) + "\n");

            return sb.toString() ;
        }
    }
}