package com.qianwen.license.common;

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

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


public abstract class AbstractServerInfos {
	 private static Logger logger = LoggerFactory.getLogger(AbstractServerInfos.class);

	    /**
	     * 组装需要额外校验的License参数
	     * @author zifangsky
	     * @date 2018/4/23 14:23
	     * @since 1.0.0
	     * @return demo.LicenseCheckModel
	     */
	    public LicenseExtraModel getServerInfos(){
	        LicenseExtraModel result = new LicenseExtraModel();
	        
	        try {
	            result.setIpAddress(this.getIpAddress());
	            result.setMacAddress(this.getMacAddress());
	            result.setCpuSerial(this.getCPUSerial());
	            result.setMainBoardSerial(this.getMainBoardSerial());
	        }catch (Exception e){
	            logger.error("获取服务器硬件信息失败",e);
	        }

	        return result;
	    }

	    /**
	     * 获取IP地址
	     * @author zifangsky
	     * @date 2018/4/23 11:32
	     * @since 1.0.0
	     * @return java.util.List<java.lang.String>
	     */
	    protected abstract List<String> getIpAddress() throws Exception;

	    /**
	     * 获取Mac地址
	     * @author zifangsky
	     * @date 2018/4/23 11:32
	     * @since 1.0.0
	     * @return java.util.List<java.lang.String>
	     */
	    protected abstract List<String> getMacAddress() throws Exception;

	    /**
	     * 获取CPU序列号
	     * @author zifangsky
	     * @date 2018/4/23 11:35
	     * @since 1.0.0
	     * @return java.lang.String
	     */
	    protected abstract String getCPUSerial() throws Exception;

	    /**
	     * 获取主板序列号
	     * @author zifangsky
	     * @date 2018/4/23 11:35
	     * @since 1.0.0
	     * @return java.lang.String
	     */
	    protected abstract String getMainBoardSerial() throws Exception;

	    /**
	     * 获取当前服务器所有符合条件的InetAddress
	     * @author zifangsky
	     * @date 2018/4/23 17:38
	     * @since 1.0.0
	     * @return java.util.List<java.net.InetAddress>
	     */
	    protected List<InetAddress> getLocalAllInetAddress() throws Exception {
	        List<InetAddress> result = new ArrayList<>(4);

	        // 遍历所有的网络接口
	        for (Enumeration networkInterfaces = NetworkInterface.getNetworkInterfaces(); networkInterfaces.hasMoreElements(); ) {
	            NetworkInterface iface = (NetworkInterface) networkInterfaces.nextElement();
	            // 在所有的接口下再遍历IP
	            for (Enumeration inetAddresses = iface.getInetAddresses(); inetAddresses.hasMoreElements(); ) {
	                InetAddress inetAddr = (InetAddress) inetAddresses.nextElement();

	                //排除LoopbackAddress、SiteLocalAddress、LinkLocalAddress、MulticastAddress类型的IP地址
	                if(!inetAddr.isLoopbackAddress() /*&& !inetAddr.isSiteLocalAddress()*/
	                        && !inetAddr.isLinkLocalAddress() && !inetAddr.isMulticastAddress()){
	                    result.add(inetAddr);
	                }
	            }
	        }

	        return result;
	    }

	    /**
	     * 获取某个网络接口的Mac地址
	     * @author zifangsky
	     * @date 2018/4/23 18:08
	     * @since 1.0.0
	     * @param
	     * @return void
	     */
	    protected String getMacByInetAddress(InetAddress inetAddr){
	        try {
	            byte[] mac = NetworkInterface.getByInetAddress(inetAddr).getHardwareAddress();
	            StringBuffer stringBuffer = new StringBuffer();

	            for(int i=0;i<mac.length;i++){
	                if(i != 0) {
	                    stringBuffer.append("-");
	                }

	                //将十六进制byte转化为字符串
	                String temp = Integer.toHexString(mac[i] & 0xff);
	                if(temp.length() == 1){
	                    stringBuffer.append("0" + temp);
	                }else{
	                    stringBuffer.append(temp);
	                }
	            }

	            return stringBuffer.toString().toUpperCase();
	        } catch (SocketException e) {
	            e.printStackTrace();
	        }

	        return null;
	    }
}