package com.yihu.utils;

import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Formatter;
import java.util.UUID;

import net.sf.json.JSONObject;

public class WxSDK
{
    private  final static String APPID="";//暂时没有参数无法自己实现access_token和jsapi_ticket
    
    private  final static String APPSECRET="";//暂时没有参数无法自己实现access_token和jsapi_ticket
    
/*    public String access_token(){
        String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid="+APPID+"&secret="+APPSECRET; 
        String access_token=null;
        
        String expires_in=null;
        try{
            URL urlGet = new URL(url); 
            HttpURLConnection http = (HttpURLConnection) urlGet.openConnection();
            http.setRequestMethod("GET"); // 必须是get方式请求 
            http.setRequestProperty("Content-Type","application/x-www-form-urlencoded"); 
            http.setDoOutput(true);
            http.setDoInput(true); 
            System.setProperty("sun.net.client.defaultConnectTimeout", "30000");// 连接超时30秒
            System.setProperty("sun.net.client.defaultReadTimeout", "30000"); // 读取超时30秒   
            http.connect();
            InputStream is = http.getInputStream(); 
            int size = is.available();  
            byte[] jsonBytes = new byte[size]; 
            is.read(jsonBytes); 
            String message = new String(jsonBytes, "UTF-8"); 
            JSONObject demoJson = JSONObject.fromObject(message);  
            access_token = demoJson.getString("access_token");
            expires_in = demoJson.getString("expires_in");
            is.close();   
            } catch (Exception e) { 
                e.printStackTrace(); 
            }       
          return access_token; 
          } 
    
    public String jsapi_ticket(String access_token){

        String str = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token="+access_token+"&type=jsapi";
        String jsapi_ticket = null;
        String expiresin =null;
        try {  
            URL url = new URL(str); 
            HttpURLConnection http = (HttpURLConnection) url.openConnection();
            http.setRequestMethod("GET"); // 必须是get方式请求
            http.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
            http.setDoOutput(true);
            http.setDoInput(true); 
            System.setProperty("sun.net.client.defaultConnectTimeout", "30000");// 连接超时30秒    
            System.setProperty("sun.net.client.defaultReadTimeout", "30000"); // 读取超时30秒   
            http.connect();        InputStream is = http.getInputStream();   
            int size = is.available();        
            byte[] jsonBytes = new byte[size];    
            is.read(jsonBytes);    
            String message = new String(jsonBytes, "UTF-8");    
            JSONObject demoJson = JSONObject.fromObject(message);   
            jsapi_ticket = demoJson.getString("ticket");      
            expiresin = demoJson.getString("expires_in");        
            is.close();   
            } catch (Exception e) { 
                e.printStackTrace();  
           }
           return jsapi_ticket;
        } */
    private static String byteToHex(final byte[] hash) {
        Formatter formatter = new Formatter();
        for (byte b : hash)
        {
            formatter.format("%02x", b);
        }
        String result = formatter.toString();
        formatter.close();
        return result;
    }

     private static String create_nonce_str() {
        return  UUID.randomUUID().toString().trim().replaceAll("-", "");
     }
     private static String create_timestamp() {
        return Long.toString(System.currentTimeMillis() / 1000);
     }
    public static JSONObject getConfig(String jsapi_ticket, String url) {
        JSONObject ret = new JSONObject();
        String nonce_str = create_nonce_str();
        String timestamp = create_timestamp();
        String string1;
        String signature = "";
        string1 = "jsapi_ticket=" + jsapi_ticket +
                  "&noncestr=" + nonce_str +
                  "&timestamp=" + timestamp +
                  "&url=" + url;
        try
        {
            MessageDigest crypt = MessageDigest.getInstance("SHA-1");
            crypt.reset();
            crypt.update(string1.getBytes("UTF-8"));
            signature = byteToHex(crypt.digest());
        }
        catch (NoSuchAlgorithmException e)
        {
            e.printStackTrace();
        }
        catch (UnsupportedEncodingException e)
        {
            e.printStackTrace();
        }

        ret.put("url", url);
        ret.put("jsapi_ticket", jsapi_ticket);
        ret.put("nonceStr", nonce_str);
        ret.put("timestamp", timestamp);
        ret.put("signature", signature);

        return ret;
    }
    

}