package org.jeecg.modules.caayouth.api.utils.weixinShare;

import net.sf.json.JSON;
import net.sf.json.JSONObject;

import java.io.*;

import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.*;

public class WeinXinUtil {
    private static String AppId="*************";
    private static String Secret="*************";


    public static Map<String, String> sign() {
        Map<String,String> m=getJsapiTicket();
        String jsapi_ticket =m.get("jsapiTicket");
        String url = "***********";//分享页面域名
        Map<String, String> ret = new HashMap<String, String>();
        String nonce_str = create_nonce_str();
        String timestamp = create_timestamp();
        String string1;
        String signature = "";
        //注意这里参数名必须全部小写，且必须有序
        string1 = "jsapi_ticket=" + jsapi_ticket +
                "&noncestr=" + nonce_str +
                "&timestamp=" + timestamp +
                "&url=" + url;
        System.out.println(string1);
        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);
        ret.put("accessToken",m.get("accessToken"));
        return ret;
    }
    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();
    }

    private static String create_timestamp() {
        return Long.toString(System.currentTimeMillis() / 1000);
    }
    /*获取jsapi_ticket*/
    public static Map<String,String> getJsapiTicket() {
        Map<String,String> m=new HashMap<>();
        String accessToken=getAccessToken("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential" +
                "&appid=AppId&secret=Secret");
        JSONObject demoJson = JSONObject.fromObject(accessToken);
        m.put("accessToken",demoJson.getString("access_token"));
        String jsapiTicketURL="https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token="+m.get("accessToken");
        String result = "";
        BufferedReader in = null;
        try {
            String urlNameString = jsapiTicketURL ;
            URL realUrl = new URL(urlNameString);
            URLConnection connection = realUrl.openConnection();
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            connection.connect();
            Map<String, List<String>> map = connection.getHeaderFields();
            for (String key : map.keySet()) {
                System.out.println(key + "--->" + map.get(key));
            }
            in = new BufferedReader(new InputStreamReader(
                    connection.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("异常" + e);
            e.printStackTrace();
        } finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        JSONObject jsapiTicket = JSONObject.fromObject(result);
        m.put("jsapiTicket",jsapiTicket.getString("ticket"));
        return m;
    }
    /*获取accessToken*/
    public static String getAccessToken(String url) {
        String result = "";
        BufferedReader in = null;
        try {
            String urlNameString = url ;
            URL realUrl = new URL(urlNameString);
            URLConnection connection = realUrl.openConnection();
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            connection.connect();
            Map<String, List<String>> map = connection.getHeaderFields();
            for (String key : map.keySet()) {
                System.out.println(key + "--->" + map.get(key));
            }
            in = new BufferedReader(new InputStreamReader(
                    connection.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("异常" + e);
            e.printStackTrace();
        } finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return result;
    }

}