package com.doumee.keyCabinet.http;

/**
 * Created by MSI on 2018/5/22.
 */
import android.content.Context;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;

/**
 * =======================================================
 * 版权：Copyright LiYing 2015-2016. All rights reserved.
 * 作者：liying - liruoer2008@yeah.net
 * 日期：2016/12/19 19:43
 * 版本：1.0
 * 描述：IP地址工具类
 * 备注：
 * =======================================================
 */
public class IPUtils {

    /**
     * 获取本机IPv4地址
     *
     * @param context
     * @return 本机IPv4地址；null：无网络连接
     */
    public static String getIpAddress(Context context) {
        try {
            // 获取WiFi服务
            WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
            // 判断WiFi是否开启
            if (wifiManager.isWifiEnabled()) {
                // 已经开启了WiFi
                WifiInfo wifiInfo = wifiManager.getConnectionInfo();
                int ipAddress = wifiInfo.getIpAddress();
                String ip = intToIp(ipAddress);
                return ip;
            } else {
                // 未开启WiFi
                return getIpAddress();
            }
        }catch (Exception e){
            return "";
        }
    }

    private static String intToIp(int ipAddress) {
        return (ipAddress & 0xFF) + "." +
                ((ipAddress >> 8) & 0xFF) + "." +
                ((ipAddress >> 16) & 0xFF) + "." +
                (ipAddress >> 24 & 0xFF);
    }

    /**
     * 蜂窝移动数据已开启
     * 获取本机IPv4地址
     *
     * @return 本机IPv4地址；null：无网络连接
     */
    private static String getIpAddress() {
        try {
            NetworkInterface networkInterface;
            InetAddress inetAddress;
            for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements(); ) {
                networkInterface = en.nextElement();
                for (Enumeration<InetAddress> enumIpAddr = networkInterface.getInetAddresses(); enumIpAddr.hasMoreElements(); ) {
                    inetAddress = enumIpAddr.nextElement();
                    if (!inetAddress.isLoopbackAddress() && !inetAddress.isLinkLocalAddress()) {
                        return inetAddress.getHostAddress();
                    }
                }
            }
            return null;
        } catch (SocketException ex) {
            ex.printStackTrace();
            return null;
        }
    }
}