package com.fr.plugin.schedule.oa;

import com.fr.json.JSONObject;
import com.fr.log.FineLoggerFactory;
import com.fr.third.org.apache.http.HttpResponse;
import com.fr.third.org.apache.http.HttpStatus;
import com.fr.third.org.apache.http.client.HttpClient;
import com.fr.third.org.apache.http.client.methods.HttpPost;
import com.fr.third.org.apache.http.config.Registry;
import com.fr.third.org.apache.http.config.RegistryBuilder;
import com.fr.third.org.apache.http.conn.socket.ConnectionSocketFactory;
import com.fr.third.org.apache.http.conn.socket.PlainConnectionSocketFactory;
import com.fr.third.org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import com.fr.third.org.apache.http.entity.StringEntity;
import com.fr.third.org.apache.http.impl.client.HttpClients;
import com.fr.third.org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import com.fr.third.org.apache.http.util.EntityUtils;

import javax.net.ssl.*;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.security.cert.CertificateException;
import java.util.Iterator;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * @author fr.open
 * @Date 2021/08/17
 */
public class HttpUtil {

    private static HostnameVerifier hv = new HostnameVerifier() {
        @Override
        public boolean verify(String urlHostName, SSLSession session) {
            System.out.println("Warning: URL Host: " + urlHostName + " vs. "
                    + session.getPeerHost());
            return true;
        }
    };

    /**
     * 发送get请求
     *
     * @param url
     * @param param
     * @param header
     * @return
     * @throws IOException
     */
    public static String sendGet(String url, Map<String, String> param, Map<String, String> header) {
        String result = "";
        BufferedReader in = null;
        String urlNameString = url;
        try {
            if (param != null) {
                urlNameString += "?";
                urlNameString += param.entrySet()
                        .stream()
                        .map(entry -> entry.getKey() + "=" + entry.getValue())
                        .collect(Collectors.joining("&"));
            }

            URL realUrl = new URL(urlNameString);
            // 打开和URL之间的连接
            HttpURLConnection connection;
            if (url.startsWith("https")) {
                trustAllHttpsCertificates();
                HttpsURLConnection.setDefaultHostnameVerifier(hv);
                connection = (HttpURLConnection) realUrl.openConnection();
            } else {
                connection = (HttpURLConnection) realUrl.openConnection();
            }
            //设置超时时间
            connection.setDoInput(true);
            connection.setRequestMethod("GET");
            connection.setConnectTimeout(5000);
            connection.setReadTimeout(15000);
            // 设置通用的请求属性
            if (header != null) {
                Iterator<Map.Entry<String, String>> it = header.entrySet().iterator();
                while (it.hasNext()) {
                    Map.Entry<String, String> entry = it.next();
                    System.out.println(entry.getKey() + ":::" + entry.getValue());
                    connection.setRequestProperty(entry.getKey(), entry.getValue());
                }
            }
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 建立实际的连接
            connection.connect();
            // 定义 BufferedReader输入流来读取URL的响应，设置utf8防止中文乱码
            in = new BufferedReader(new InputStreamReader(connection.getInputStream(), "utf-8"));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
            if (in != null) {
                in.close();
            }
        } catch (Exception e) {
            FineLoggerFactory.getLogger().error(e, "get url error ,url is:{},error is {}", urlNameString, e.getMessage());
        }
        return result;
    }

    public static String sendPost(String url, Map<String, Object> header, JSONObject body) {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = null;
        String res = null;
        try {
            String urlNameString = url;

            URL realUrl = new URL(urlNameString);
            // 打开和URL之间的连接
            HttpURLConnection conn;
            if (url.startsWith("https")) {
                trustAllHttpsCertificates();
                HttpsURLConnection.setDefaultHostnameVerifier(hv);
                conn = (HttpURLConnection) realUrl.openConnection();
            } else {
                conn = (HttpURLConnection) realUrl.openConnection();
            }
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
//            conn.setRequestProperty("user-agent",
//                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            conn.setRequestProperty("Content-Type", "application/json;charset=UTF-8");
            if (header != null) {
                header.forEach((k, v) -> {
                    conn.setRequestProperty(k, String.valueOf(v));
                });
            }
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            //获取请求头

            // 获取URLConnection对象对应的输出流
            out = new PrintWriter(conn.getOutputStream());
            // 发送请求参数
            if (body != null) {
                FineLoggerFactory.getLogger().error("content data: {}", body.toString());
                FineLoggerFactory.getLogger().error("content cover data: {}", new String(body.toString().getBytes("UTF-8"), "UTF-8"));
                out.print(new String(body.toString().getBytes("UTF-8"), "UTF-8"));
            }
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(
                    new InputStreamReader(conn.getInputStream(),"UTF-8"));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
            res = result;
            if (res.startsWith("null")) {
                res = res.replace("null", "");
            }
        } catch (Exception e) {
            FineLoggerFactory.getLogger().error(e.getMessage(), e);
        }
        //使用finally块来关闭输出流、输入流
        finally {
            try {
                if (out != null) {
                    out.close();
                }
                if (in != null) {
                    in.close();
                }
            } catch (IOException e) {
                FineLoggerFactory.getLogger().error(e.getMessage(), e);
            }
        }
        return res;
    }


    public static String doPost(String url, Map<String, Object> header, JSONObject json) {
        HttpClient client = HttpClients.createDefault();
        if (url.startsWith("https")) {
            SSLContext sslcontext = createIgnoreVerifySSL();
            Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
                    .register("http", PlainConnectionSocketFactory.INSTANCE)
                    .register("https", new SSLConnectionSocketFactory(sslcontext))
                    .build();
            PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager(socketFactoryRegistry);
            HttpClients.custom().setConnectionManager(connManager);
            client = HttpClients.custom().setConnectionManager(connManager).build();
        }
        HttpPost post = new HttpPost(url);
        post.setHeader("accept", "*/*");
        post.setHeader("connection", "Keep-Alive");
        post.setHeader("Content-Type", "application/json");
        if (header != null) {
            header.forEach((k, v) -> {
                post.setHeader(k, String.valueOf(v));
            });
        }
        try {
            StringEntity s = new StringEntity(json.toString(),"UTF-8");
            s.setContentEncoding("UTF-8");
            s.setContentType("application/json; charset=UTF-8");//发送json数据需要设置contentType
            post.setEntity(s);
            HttpResponse res = client.execute(post);
            if (res.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                String result = EntityUtils.toString(res.getEntity());// 返回json格式：
                return result;
            }
        } catch (Exception e) {
            FineLoggerFactory.getLogger().error(e.getMessage(),e);
        }
        return null;
    }

    private static void trustAllHttpsCertificates() throws Exception {
        TrustManager[] trustAllCerts = new TrustManager[1];
        TrustManager tm = new miTM();
        trustAllCerts[0] = tm;
        SSLContext sc = SSLContext.getInstance("SSL", "SunJSSE");
        sc.init(null, trustAllCerts, null);
        HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
    }


    /**
     * encode url by UTF-8
     *
     * @param url url before encoding
     * @return url after encoding
     */
    public static String encodeUrl(String url) {
        String eurl = url;
        try {
            eurl = URLEncoder.encode(url, "UTF-8");
        } catch (UnsupportedEncodingException e) {
        }
        return eurl;
    }

    private static class miTM implements TrustManager,
            X509TrustManager {
        @Override
        public java.security.cert.X509Certificate[] getAcceptedIssuers() {
            return null;
        }

        public boolean isServerTrusted(
                java.security.cert.X509Certificate[] certs) {
            return true;
        }

        public boolean isClientTrusted(
                java.security.cert.X509Certificate[] certs) {
            return true;
        }

        @Override
        public void checkServerTrusted(
                java.security.cert.X509Certificate[] certs, String authType)
                throws CertificateException {
            return;
        }

        @Override
        public void checkClientTrusted(
                java.security.cert.X509Certificate[] certs, String authType)
                throws CertificateException {
            return;
        }
    }

    public static SSLContext createIgnoreVerifySSL() {
        try {
            SSLContext sc = SSLContext.getInstance("SSLv3");

            // 实现一个X509TrustManager接口，用于绕过验证，不用修改里面的方法
            X509TrustManager trustManager = new X509TrustManager() {
                @Override
                public void checkClientTrusted(
                        java.security.cert.X509Certificate[] paramArrayOfX509Certificate,
                        String paramString) throws CertificateException {
                }

                @Override
                public void checkServerTrusted(
                        java.security.cert.X509Certificate[] paramArrayOfX509Certificate,
                        String paramString) throws CertificateException {
                }

                @Override
                public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                    return null;
                }
            };

            sc.init(null, new TrustManager[]{trustManager}, null);
            return sc;
        } catch (Exception e) {
            FineLoggerFactory.getLogger().error(e.getMessage(), e);
        }
        return null;
    }
}