package com.jqyd.pub.time;


import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.net.URLConnection;
import java.util.Date;

import org.apache.http.entity.StringEntity;
import org.json.JSONException;
import org.json.JSONObject;

import android.os.SystemClock;

import com.jqyd.pub.string.JqydStringUtil;
import com.jqyd.pub.transport.SendServer;

public class GetFromServer {
	
	/**
	 * 获取服务器端时间
	 * @return
	 */
	public static long getServerTime(){
		
		long serverTime = 0;
		SntpClient client = SntpClient.getInstance();  
        if (client.requestTime("cn.pool.ntp.org", 60000)) {  
        	serverTime= client.getNtpTime() + SystemClock.elapsedRealtime() - client.getNtpTimeReference(); 
        }        
        if(serverTime==0){
        	JSONObject object = new JSONObject();
     		try {
     			object.put("getTime", "yes");
     		} catch (JSONException e) {
     			// TODO Auto-generated catch block
     			e.printStackTrace();
     		}
     		// 请求服务器
     		String urlStr ="";
     		
     		SendServer sendMsg = new SendServer(urlStr);
     		
     		StringEntity entity;
			try {
				entity = new StringEntity(JqydStringUtil.switchEncode(object.toString()));

	     		String result = sendMsg.requestJsonFromServer(entity);
	    		
	     		if (result != null && !result.equals("-1") && !result.equals("500")) {
	     			try {
	     				JSONObject obj = new JSONObject(result);
	     				serverTime = obj.getLong("timeSec");
	     			} catch (JSONException e) {
	     				// TODO Auto-generated catch block
	     				e.printStackTrace();
	     			}
	     		} else {
	     			try {
	     				URL url = new URL("http://www.bjtime.cn");// 取得资源对象
	     				URLConnection uc = url.openConnection();// 生成连接对象
	     				uc.connect(); // 发出连接
	     				serverTime= uc.getDate(); // 取得网站日期时间				
	     			} catch (Exception e) {
	     				e.printStackTrace();
	     			}
	     		}
	     		
			} catch (UnsupportedEncodingException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}
        }   
        Date current = new Date(serverTime);  
        //获取网络时间
		return serverTime;
	}	

}