/*
 * Copyright 2022-2025 兮玥(190785909@qq.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.chestnut.system.domain.vo.server;

import com.chestnut.common.utils.Arith;
import com.chestnut.common.utils.DateUtils;
import lombok.Getter;
import lombok.Setter;

import java.lang.management.ManagementFactory;

/**
 * JVM相关信息
 *
 * @author 兮玥
 * @email 190785909@qq.com
 */
@Getter
@Setter
public class Jvm {

    /**
     * 当前JVM占用的内存总数(M)
     */
    private double total;

    /**
     * JVM最大可用内存总数(M)
     */
    private double max;

    /**
     * JVM空闲内存(M)
     */
    private double free;

    /**
     * JDK版本
     */
    private String version;

    /**
     * JDK路径
     */
    private String home;

    private String javaAwtFonts;

    public double getTotal() {
        return Arith.div(total, (1024 * 1024), 2);
    }

    public double getMax() {
        return Arith.div(max, (1024 * 1024), 2);
    }

    public double getFree() {
        return Arith.div(free, (1024 * 1024), 2);
    }

    public double getUsed() {
        return Arith.div(total - free, (1024 * 1024), 2);
    }

    public double getUsage() {
        return Arith.mul(Arith.div(total - free, total, 4), 100);
    }

    /**
     * 获取JDK名称
     */
    public String getName() {
        return ManagementFactory.getRuntimeMXBean().getVmName();
    }

    /**
     * JDK启动时间
     */
    public String getStartTime() {
        return DateUtils.parseDateToStr(DateUtils.YYYY_MM_DD_HH_MM_SS, DateUtils.getServerStartDate());
    }

    /**
     * JDK运行时间
     */
    public String getRunTime() {
        return DateUtils.getDatePoor(DateUtils.getNowDate(), DateUtils.getServerStartDate());
    }

    /**
     * 运行参数
     */
    public String getInputArgs() {
        return ManagementFactory.getRuntimeMXBean().getInputArguments().toString();
    }
}
