package com.qxueyou.scc.base.util;

import java.io.IOException;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.Enumeration;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import ua_parser.Client;
import ua_parser.Parser;



public final class RequestClientUtils {
	
	private static Logger log = LogManager.getLogger(RequestClientUtils.class);
	
	private static final String[][] agentArrs = new String[][]{
		{"micromessenger","Weixin"},
		{"android","Android"},
		{"mac os","Mac"},
		{"windows phone","Windows"}};
		
	
	/**
	 * 获取客户端ip地址
	 * 
	 * @param request
	 * @return
	 */
	public static String getRemoteIP(HttpServletRequest request) {
		
		if (request.getHeader("x-real-ip") == null) {
			return request.getRemoteAddr();
		}
		return request.getHeader("x-real-ip");
		
	}
	
	/**
	 * 获取服务器本地IP
	 * @return
	 */
	public static String getLocalIP() {
		InetAddress ip = null;
		try {
			Enumeration<NetworkInterface> netInterfaces = (Enumeration<NetworkInterface>) NetworkInterface.getNetworkInterfaces();
			while (netInterfaces.hasMoreElements()) {
				NetworkInterface ni = (NetworkInterface) netInterfaces.nextElement();
				Enumeration<InetAddress> ips = ni.getInetAddresses();
				while (ips.hasMoreElements()) {
					ip = (InetAddress) ips.nextElement();
					// 127.开头的都是lookback地址
					if (ip.isSiteLocalAddress() && !ip.isLoopbackAddress() && ip.getHostAddress().indexOf(":") == -1) {
						return ip.getHostAddress();
					}
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}
	
	/**
	 * 获取COOKIE : KEY
	 * @param httpRequest
	 * @return
	 */
	public static Cookie getKeyCookie(HttpServletRequest httpRequest) {
		Cookie[] cookies = httpRequest.getCookies();
		Cookie cookieKey = null;
		
		if(cookies==null){
			return null;
		}
		
		for(Cookie cookie:cookies){
			if("KEY".equals(cookie.getName())){
				cookieKey = cookie;
				break;
			}
		}
		return cookieKey;
	}

	/**
	 * 解析客户端
	 * @param userAgent userAgent
	 * @return
	 */
	public static String parseClient(String userAgent){
		
		if(userAgent==null){
			return null;
		}
		
		int leftBracketStartIdx = userAgent.indexOf('(');
		int rightBracketStartIdx = userAgent.indexOf(')');
		
		
		if(leftBracketStartIdx<0 || rightBracketStartIdx<0){
			return userAgent;
		}
		
		return userAgent.substring(leftBracketStartIdx+1, rightBracketStartIdx);
	}
	
	
	/**
	 * 判断是PC端还是移动端
	 * 
	 * @return
	 */
	public static boolean  isMobileDevice(String requestHeader){
        /**
         * android : 所有android设备
         * iphone : iphone 
         * windows phone:Nokia等windows系统的手机
         * ipad ：ipad
         */
		String lowerRequestHeader = requestHeader;
        String[] deviceArray = new String[]{"android","iphone","windows phone","ipad"};
        if(lowerRequestHeader == null) {
            return false;
        }
        lowerRequestHeader = lowerRequestHeader.toLowerCase();
        for(int i=0;i<deviceArray.length;i++){
            if(lowerRequestHeader.indexOf(deviceArray[i])>0){
                return true;
            }
        }
        
        return false;
	}
	
	/**
	 * 判断是PC端还是移动端
	 * 
	 * @return
	 */
	public static String  getAgentDevice(String requestHeader){
		
        for(String[] agent:agentArrs){
        	if(requestHeader.toLowerCase().indexOf(agent[0])>0){
                return agent[1];
            }
        }
        return "未知";
	}
	
	/**
	 * 判断是否在微信浏览器打开
	 * 
	 * @return
	 */
	public static boolean  isWeixin(String userAgent){
        
		return getAgentDevice(userAgent).equals("Weixin");
	}
	
	/**
	 * 获取头信息
	 * 
	 * @param userAgent
	 * @return
	 */
	public static Client userAgent(String userAgent){
		Parser uaParser;
		try {
			uaParser = new Parser();
			return uaParser.parse(userAgent);
		} catch (IOException e) {
			log.error("解析头信息失败", e);
		}
		return null;
	}
}