package com.ld.igds.util;

import org.apache.commons.lang3.StringUtils;

import javax.servlet.http.HttpServletRequest;
import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 * @Desc: 获取客户登陆信息
 * @author: andy.jia
 * @update-time: 2022/11/10 19:55
 */
public class SystemUtil {

    /***
     * 获取客户端IP地址
     * @param request
     */
    public static String getIP(HttpServletRequest request) {
        if (request == null) {
            return "127.0.0.1";
        }
        String ip = request.getHeader("X-Real-IP");
        if (ip != null && !"".equals(ip) && !"unknown".equalsIgnoreCase(ip)) {
            return ip;
        }
        ip = request.getHeader("X-Forwarded-For");
        if (ip != null && !"".equals(ip) && !"unknown".equalsIgnoreCase(ip)) {
            // 多次反向代理后会有多个IP值，第一个为真实IP。
            int index = ip.indexOf(',');
            if (index != -1) {
                return ip.substring(0, index);
            } else {
                return ip;
            }
        } else {
            return request.getRemoteAddr();
        }
    }


    /**
     * 获取来访者的浏览器版本
     *
     * @param request
     * @return
     */
    public static String getBrowserInfo(HttpServletRequest request) {
        String browserVersion = null;
        String header = request.getHeader("user-agent");
        if (header == null || header.equals("")) {
            return "";
        }
        if (header.indexOf("MSIE 6.0") > 0) {
            browserVersion = "IE 6";
        } else if (header.indexOf("MSIE 7.0") > 0) {
            browserVersion = "IE 7";
        } else if (header.indexOf("MSIE 8.0") > 0) {
            browserVersion = "IE 8";
        } else if (header.indexOf("MSIE 9.0") > 0) {
            browserVersion = "IE 9";
        } else if (header.indexOf("MSIE 10.0") > 0) {
            browserVersion = "IE 10";
        } else if (header.indexOf("rv:11.0") > 0) {
            browserVersion = "IE 11";
        } else if (header.indexOf("Firefox") > 0) {
            browserVersion = "Firefox";
        } else if (header.indexOf("Chrome") > 0) {
            browserVersion = "Chrome";
        } else if (header.indexOf("Safari") > 0) {
            browserVersion = "Safari";
        } else if (header.indexOf("Camino") > 0) {
            browserVersion = "Camino";
        } else if (header.indexOf("Konqueror") > 0) {
            browserVersion = "Konqueror";
        }
        return browserVersion;
    }


    /**
     * 获取系统版本信息
     *
     * @param request
     * @return
     */
    public static String getSystemInfo(HttpServletRequest request) {
        String systenInfo = null;
        String header = request.getHeader("user-agent");
        if (header == null || header.equals("")) {
            return "";
        }
        // 得到用户的操作系统
        if (header.indexOf("NT 6.0") > 0) {
            systenInfo = "Windows Vista/Server 2008";
        } else if (header.indexOf("NT 5.2") > 0) {
            systenInfo = "Windows Server 2003";
        } else if (header.indexOf("NT 5.1") > 0) {
            systenInfo = "Windows XP";
        } else if (header.indexOf("NT 6.0") > 0) {
            systenInfo = "Windows Vista";
        } else if (header.indexOf("NT 6.1") > 0) {
            systenInfo = "Windows 7";
        } else if (header.indexOf("NT 6.2") > 0) {
            systenInfo = "Windows Slate";
        } else if (header.indexOf("NT 6.3") > 0) {
            systenInfo = "Windows 9";
        } else if (header.indexOf("NT 10.0") > 0) {
            systenInfo = "Windows 10";
        } else if (header.indexOf("NT 5") > 0) {
            systenInfo = "Windows 2000";
        } else if (header.indexOf("NT 4") > 0) {
            systenInfo = "Windows NT4";
        } else if (header.indexOf("Me") > 0) {
            systenInfo = "Windows Me";
        }  else if (header.indexOf("Mac") > 0) {
            systenInfo = "Mac";
        } else if (header.indexOf("Unix") > 0) {
            systenInfo = "UNIX";
        } else if (header.indexOf("Linux") > 0) {
            systenInfo = "Linux";
        } else if (header.indexOf("SunOS") > 0) {
            systenInfo = "SunOS";
        }
        return systenInfo;
    }


    /**
     * 获取来访者的主机名称
     *
     * @param ip
     * @return
     */
    public static String getHostName(String ip) {
        InetAddress inet;
        try {
            inet = InetAddress.getByName(ip);
            return inet.getHostName();
        } catch (UnknownHostException e) {
            e.printStackTrace();
        }
        return "未知";
    }


}