/*
 * MIT License
 *
 * Copyright (c) [2023]
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
/**
 * Alipay.com Inc.
 * Copyright (c) 2004-2018 All Rights Reserved.
 */
package com.alipay.altershield.common.util;

import com.alibaba.fastjson.JSONObject;
import com.alipay.altershield.common.logger.Loggers;
import com.alipay.altershield.framework.common.util.logger.AlterShieldLoggerManager;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLContextBuilder;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.conn.ssl.X509HostnameVerifier;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.apache.logging.log4j.core.util.IOUtils;
import org.slf4j.Logger;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import java.security.GeneralSecurityException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * HTTP request tool class
 *
 * @author : yuefan.wyf
 * @version : 1.0.0
 * @date : 2017/12/15
 */
public class HttpUtils {
    private static PoolingHttpClientConnectionManager connMgr;
    private static RequestConfig                      requestConfig;
    private static final int    MAX_TIMEOUT = 30000;
    private static final Logger logger      = Loggers.OUTER_TASK;

    static {
        // 设置连接池
        connMgr = new PoolingHttpClientConnectionManager();
        // 设置连接池大小
        connMgr.setMaxTotal(100);
        connMgr.setDefaultMaxPerRoute(connMgr.getMaxTotal());

        RequestConfig.Builder configBuilder = RequestConfig.custom();
        // 设置连接超时
        configBuilder.setConnectTimeout(MAX_TIMEOUT);
        // 设置读取超时
        configBuilder.setSocketTimeout(MAX_TIMEOUT);
        // 设置从连接池获取连接实例的超时
        configBuilder.setConnectionRequestTimeout(MAX_TIMEOUT);
        // 在提交请求之前 测试连接是否可用
        configBuilder.setStaleConnectionCheckEnabled(true);
        requestConfig = configBuilder.build();
    }

    /**
     * 发送 GET 请求（HTTP），不带输入数据
     * @param url
     * @return
     */
    public static String doGet(String url) {
        return doGet(url, new HashMap<String, Object>());
    }

    /**
     * 发送 GET 请求（HTTP），不带输入数据，返回值编码为utf-8
     * @param url
     * @return
     */
    public static String doGetWithUtf8(String url) {
        return doGetWithUtf8(url, new HashMap<>());
    }

    /**
     * 发送 GET 请求（HTTP），K-V形式，返回值编码为utf-8
     * @param url
     * @param params
     * @return
     */
    public static String doGetWithUtf8(String url, Map<String, Object> params) {
        String apiUrl = url;
        StringBuffer param = new StringBuffer();
        int i = 0;
        for (String key : params.keySet()) {
            if (i == 0) {
                param.append("?");
            } else {
                param.append("&");
            }

            param.append(key).append("=").append(params.get(key));
            i++;
        }
        apiUrl += param;
        String result = null;
        HttpClient httpclient = new DefaultHttpClient();
        try {
            HttpGet httpPost = new HttpGet(apiUrl);
            HttpResponse response = httpclient.execute(httpPost);
            response.getStatusLine().getStatusCode();

            HttpEntity entity = response.getEntity();
            if (entity != null) {
                result = EntityUtils.toString(entity, "utf-8");
            }
        } catch (IOException e) {
            AlterShieldLoggerManager.log("error", logger, "doGetWithUtf8", e);
        }
        return result;
    }

    /**
     * 发送 GET 请求（HTTP），K-V形式
     * @param url
     * @param params
     * @return
     */
    public static String doGet(String url, Map<String, Object> params) {
        String apiUrl = url;
        StringBuffer param = new StringBuffer();
        int i = 0;
        for (String key : params.keySet()) {
            if (i == 0) {
                param.append("?");
            } else {
                param.append("&");
            }

            param.append(key).append("=").append(params.get(key));
            i++;
        }
        apiUrl += param;
        String result = null;
        HttpClient httpclient = new DefaultHttpClient();
        try {
            HttpGet httpPost = new HttpGet(apiUrl);
            HttpResponse response = httpclient.execute(httpPost);
            response.getStatusLine().getStatusCode();

            HttpEntity entity = response.getEntity();
            if (entity != null) {
                InputStream instream = entity.getContent();
                result = IOUtils.toString(new InputStreamReader(instream));
            }
        } catch (IOException e) {
            AlterShieldLoggerManager.log("error", logger, "doGet", e);
        }
        return result;
    }

    /**
     * 发送 GET 请求（HTTP），K-V形式
     * @param url API接口URL
     * @param params 参数map
     * @param header 请求头
     * @return
     */
    public static String doGetHeader(String url, Map<String, Object> params, Map<String, String> header) {
        String apiUrl = url;
        StringBuffer param = new StringBuffer();
        int i = 0;
        for (String key : params.keySet()) {
            if (i == 0) {
                param.append("?");
            } else {
                param.append("&");
            }

            param.append(key).append("=").append(params.get(key));
            i++;
        }
        apiUrl += param;
        String result = null;
        HttpClient httpclient = new DefaultHttpClient();
        try {
            HttpGet httpPost = new HttpGet(apiUrl);
            if (header != null) {
                for (String key : header.keySet()) {
                    httpPost.setHeader(key, header.get(key));
                }
            }
            HttpResponse response = httpclient.execute(httpPost);
            response.getStatusLine().getStatusCode();

            HttpEntity entity = response.getEntity();
            if (entity != null) {
                result = EntityUtils.toString(entity, "utf-8");
            }
        } catch (IOException e) {
            AlterShieldLoggerManager.log("error", logger, "doGetHeader", e);
        }
        return result;

    }


    /**
     * 发送 POST 请求（HTTP），不带输入数据
     * @param apiUrl
     * @return
     */
    public static String doPost(String apiUrl) {
        return doPost(apiUrl, new HashMap<String, Object>(), null);
    }

    /**
     * 发送 POST 请求（HTTP），K-V形式
     * @param apiUrl API接口URL
     * @param params 参数map
     * @return
     */
    public static String doPost(String apiUrl, Map<String, Object> params, Map<String, String> header) {
        CloseableHttpClient httpClient = HttpClients.createDefault();
        String httpStr = null;
        HttpPost httpPost = new HttpPost(apiUrl);
        CloseableHttpResponse response = null;

        try {
            httpPost.setConfig(requestConfig);
            if (header != null) {
                for (String key : header.keySet()) {
                    httpPost.setHeader(key, header.get(key));
                }
            }

            List<NameValuePair> pairList = new ArrayList<>(params.size());
            for (Map.Entry<String, Object> entry : params.entrySet()) {
                NameValuePair pair = new BasicNameValuePair(entry.getKey(), entry
                        .getValue().toString());
                pairList.add(pair);
            }
            httpPost.setEntity(new UrlEncodedFormEntity(pairList, Charset.forName("UTF-8")));
            response = httpClient.execute(httpPost);
            HttpEntity entity = response.getEntity();
            httpStr = EntityUtils.toString(entity, "UTF-8");
        } catch (IOException e) {
            AlterShieldLoggerManager.log("error", logger, "doPost", e);
        } finally {
            if (response != null) {
                try {
                    EntityUtils.consume(response.getEntity());
                } catch (IOException e) {
                    AlterShieldLoggerManager.log("error", logger, "doPost", e);
                }
            }
        }
        return httpStr;
    }

    /**
     * 发送 POST 请求（HTTP），JSON形式
     * @param apiUrl
     * @param json json对象
     * @return
     */
    public static String doPut(String apiUrl, JSONObject json, Map<String, String> header) {
        CloseableHttpClient httpClient = HttpClients.createDefault();
        String httpStr = null;
        HttpPost httpPost = new HttpPost(apiUrl);
        CloseableHttpResponse response = null;
        try {
            httpPost.setConfig(requestConfig);

            if (header != null) {
                for (String key : header.keySet()) {
                    httpPost.setHeader(key, header.get(key));
                }
            }
            StringEntity stringEntity = new StringEntity(json.toJSONString(), "UTF-8");//解决中文乱码问题
            stringEntity.setContentEncoding("UTF-8");
            stringEntity.setContentType("application/json");
            httpPost.setEntity(stringEntity);
            response = httpClient.execute(httpPost);
            HttpEntity entity = response.getEntity();
            httpStr = EntityUtils.toString(entity, "UTF-8");
        } catch (Exception e) {
            AlterShieldLoggerManager.log("error", logger, "doPut", e);
        } finally {
            if (response != null) {
                try {
                    EntityUtils.consume(response.getEntity());
                } catch (IOException e) {
                    AlterShieldLoggerManager.log("error", logger, "doPut", e);
                }
            }
        }
        return httpStr;
    }

    /**
     * 发送 POST 请求（HTTP），JSON形式
     * @param apiUrl
     * @param json json对象
     * @return
     */
    public static String doPost(String apiUrl, JSONObject json, HashMap<String, String> header) {
        AlterShieldLoggerManager.log("info", logger, "doPost", apiUrl, json.toJSONString());
        CloseableHttpClient httpClient = HttpClients.createDefault();
        String httpStr = null;
        HttpPost httpPost = new HttpPost(apiUrl);
        CloseableHttpResponse response = null;

        try {
            httpPost.setConfig(requestConfig);

            if (header != null) {
                for (String key : header.keySet()) {
                    httpPost.setHeader(key, header.get(key));
                }
            }
            StringEntity stringEntity = new StringEntity(json.toJSONString(), "UTF-8");//解决中文乱码问题
            stringEntity.setContentEncoding("UTF-8");
            stringEntity.setContentType("application/json");
            httpPost.setEntity(stringEntity);
            response = httpClient.execute(httpPost);
            HttpEntity entity = response.getEntity();
            httpStr = EntityUtils.toString(entity, "UTF-8");
        } catch (Exception e) {
            AlterShieldLoggerManager.log("error", logger, e, "doPost");
        } finally {
            if (response != null) {
                try {
                    EntityUtils.consume(response.getEntity());
                } catch (IOException e) {
                    AlterShieldLoggerManager.log("error", logger, e, "doPost");
                }
            }
        }
        return httpStr;
    }

    /**
     * 发送 SSL POST 请求（HTTPS），K-V形式
     * @param apiUrl API接口URL
     * @param params 参数map
     * @return
     */
    public static String doPostSSL(String apiUrl, Map<String, Object> params) {
        CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(createSSLConnSocketFactory()).setConnectionManager(
                connMgr).setDefaultRequestConfig(requestConfig).build();
        HttpPost httpPost = new HttpPost(apiUrl);
        CloseableHttpResponse response = null;
        String httpStr = null;

        try {
            httpPost.setConfig(requestConfig);
            List<NameValuePair> pairList = new ArrayList<NameValuePair>(params.size());
            for (Map.Entry<String, Object> entry : params.entrySet()) {
                NameValuePair pair = new BasicNameValuePair(entry.getKey(), entry
                        .getValue().toString());
                pairList.add(pair);
            }
            httpPost.setEntity(new UrlEncodedFormEntity(pairList, Charset.forName("utf-8")));
            response = httpClient.execute(httpPost);
            int statusCode = response.getStatusLine().getStatusCode();
            if (statusCode != HttpStatus.SC_OK) {
                return null;
            }
            HttpEntity entity = response.getEntity();
            if (entity == null) {
                return null;
            }
            httpStr = EntityUtils.toString(entity, "utf-8");
        } catch (Exception e) {
            AlterShieldLoggerManager.log("error", logger, "doPostSSL", e);
        } finally {
            if (response != null) {
                try {
                    EntityUtils.consume(response.getEntity());
                } catch (IOException e) {
                    AlterShieldLoggerManager.log("error", logger, "doPostSSL", e);
                }
            }
        }
        return httpStr;
    }

    /**
     * 发送 SSL POST 请求（HTTPS），JSON形式
     * @param apiUrl API接口URL
     * @param json JSON对象
     * @return
     */
    public static String doPostSSL(String apiUrl, Object json, HashMap<String, String> header) {
        CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(createSSLConnSocketFactory()).setConnectionManager(
                connMgr).setDefaultRequestConfig(requestConfig).build();
        HttpPost httpPost = new HttpPost(apiUrl);
        CloseableHttpResponse response = null;
        String httpStr = null;

        try {
            httpPost.setConfig(requestConfig);
            for (String key : header.keySet()) {
                httpPost.setHeader(key, header.get(key));
            }

            StringEntity stringEntity = new StringEntity(json.toString(), "UTF-8");//解决中文乱码问题
            stringEntity.setContentEncoding("UTF-8");
            stringEntity.setContentType("application/json");
            httpPost.setEntity(stringEntity);
            response = httpClient.execute(httpPost);
            int statusCode = response.getStatusLine().getStatusCode();
            if (statusCode != HttpStatus.SC_OK) {
                return null;
            }
            HttpEntity entity = response.getEntity();
            if (entity == null) {
                return null;
            }
            httpStr = EntityUtils.toString(entity, "utf-8");
        } catch (Exception e) {
            AlterShieldLoggerManager.log("error", logger, "doPostSSL", e);
        } finally {
            if (response != null) {
                try {
                    EntityUtils.consume(response.getEntity());
                } catch (IOException e) {
                    AlterShieldLoggerManager.log("error", logger, "doPostSSL", e);
                }
            }
        }
        return httpStr;
    }

    /**
     * 发送 SSL POST 请求（HTTPS），JSON形式
     * @param apiUrl API接口URL
     * @param json JSON对象
     * @return
     */
    public static String doPostSSL(String apiUrl, Object json) {
        CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(createSSLConnSocketFactory()).setConnectionManager(
                connMgr).setDefaultRequestConfig(requestConfig).build();
        HttpPost httpPost = new HttpPost(apiUrl);
        CloseableHttpResponse response = null;
        String httpStr = null;

        try {
            httpPost.setConfig(requestConfig);

            StringEntity stringEntity = new StringEntity(json.toString(), "UTF-8");//解决中文乱码问题
            stringEntity.setContentEncoding("UTF-8");
            stringEntity.setContentType("application/json");
            httpPost.setEntity(stringEntity);
            response = httpClient.execute(httpPost);
            int statusCode = response.getStatusLine().getStatusCode();
            if (statusCode != HttpStatus.SC_OK) {
                return null;
            }
            HttpEntity entity = response.getEntity();
            if (entity == null) {
                return null;
            }
            httpStr = EntityUtils.toString(entity, "utf-8");
        } catch (Exception e) {
            AlterShieldLoggerManager.log("error", logger, "doPostSSL", e);
        } finally {
            if (response != null) {
                try {
                    EntityUtils.consume(response.getEntity());
                } catch (IOException e) {
                    AlterShieldLoggerManager.log("error", logger, "doPostSSL", e);
                }
            }
        }
        return httpStr;
    }

    /**
     * 创建SSL安全连接
     *
     * @return
     */
    private static SSLConnectionSocketFactory createSSLConnSocketFactory() {
        SSLConnectionSocketFactory sslsf = null;
        try {
            SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {

                @Override
                public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException {
                    return true;
                }
            }).build();
            sslsf = new SSLConnectionSocketFactory(sslContext, new X509HostnameVerifier() {

                @Override
                public boolean verify(String arg0, SSLSession arg1) {
                    return true;
                }

                @Override
                public void verify(String host, SSLSocket ssl) throws IOException {
                }

                @Override
                public void verify(String host, X509Certificate cert) throws SSLException {
                }

                @Override
                public void verify(String host, String[] cns, String[] subjectAlts) throws SSLException {
                }
            });
        } catch (GeneralSecurityException e) {
            AlterShieldLoggerManager.log("error", logger, "createSSLConnSocketFactory", e);
        }
        return sslsf;
    }

}