package com.yeejoin.amos.maintenance.business.util;

import org.apache.http.HttpEntity;
import org.apache.http.HttpStatus;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.TrustSelfSignedStrategy;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.DefaultHttpRequestRetryHandler;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.ssl.SSLContextBuilder;
import org.apache.http.util.EntityUtils;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Iterator;
import java.util.Map;


public class HttpUtil {

    // utf-8字符编码
    private static final String CHARSET_UTF_8 = "utf-8";

    // HTTP内容类型。
    private static final String CONTENT_TYPE_TEXT_HTML = "text/xml";

    // HTTP内容类型。相当于form表单的形式，提交数据
    private static final String CONTENT_TYPE_FORM_URL = "application/x-www-form-urlencoded";

    // HTTP内容类型。相当于form表单的形式，提交数据
    private static final String CONTENT_TYPE_JSON_URL = "application/json;charset=utf-8";

    // 连接管理器
    private static PoolingHttpClientConnectionManager pool;

    // 请求配置
    private static RequestConfig requestConfig;

    static {

        try {
            //System.out.println("初始化HttpClientTest~~~开始");
            SSLContextBuilder builder = new SSLContextBuilder();
            builder.loadTrustMaterial(null, new TrustSelfSignedStrategy());
            SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
                    builder.build());
            // 配置同时支持 HTTP 和 HTPPS
            Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create().register(
                    "http", PlainConnectionSocketFactory.getSocketFactory()).register(
                    "https", sslsf).build();
            // 初始化连接管理器
            pool = new PoolingHttpClientConnectionManager(
                    socketFactoryRegistry);
            // 将最大连接数增加到200，实际项目最好从配置文件中读取这个值
            pool.setMaxTotal(200);
            // 设置最大路由
            pool.setDefaultMaxPerRoute(2);
            // 根据默认超时限制初始化requestConfig
            int socketTimeout = 10000;
            int connectTimeout = 10000;
            int connectionRequestTimeout = 10000;
            requestConfig = RequestConfig.custom().setConnectionRequestTimeout(
                    connectionRequestTimeout).setSocketTimeout(socketTimeout).setConnectTimeout(
                    connectTimeout).build();

            //System.out.println("初始化HttpClientTest~~~结束");
        } catch (Exception e) {
            e.printStackTrace();
        }
        // 设置请求超时时间
        requestConfig = RequestConfig.custom().setSocketTimeout(50000).setConnectTimeout(50000)
                .setConnectionRequestTimeout(50000).build();
    }

    private static CloseableHttpClient getHttpClient() {

        return HttpClients.custom()
                // 设置连接池管理
                .setConnectionManager(pool)
                // 设置请求配置
                .setDefaultRequestConfig(requestConfig)
                // 设置重试次数
                .setRetryHandler(new DefaultHttpRequestRetryHandler(0, false))
                .build();
    }


    /**
     * 发送Post请求
     */
    private static String sendHttpPost(HttpPost httpPost) {
        CloseableHttpClient httpClient = null;
        CloseableHttpResponse response = null;
        // 响应内容
        String responseContent = null;
        try {
            // 创建默认的httpClient实例.
            httpClient = getHttpClient();
            // 配置请求信息
            httpPost.setConfig(requestConfig);
            // 执行请求
            response = httpClient.execute(httpPost);
            // 得到响应实例
            HttpEntity entity = response.getEntity();

            // 可以获得响应头
            // Header[] headers = response.getHeaders(HttpHeaders.CONTENT_TYPE);
            // for (Header header : headers) {
            // System.out.println(header.getName());
            // }

            // 得到响应类型
            // System.out.println(ContentType.getOrDefault(response.getEntity()).getMimeType());

            // 判断响应状态
            if (response.getStatusLine().getStatusCode() >= 300) {
                throw new Exception(
                        "HTTP Request is not success, Response code is " + response.getStatusLine().getStatusCode());
            }

            if (HttpStatus.SC_OK == response.getStatusLine().getStatusCode() || HttpStatus.SC_CREATED == response.getStatusLine().getStatusCode()) {
                responseContent = EntityUtils.toString(entity, CHARSET_UTF_8);
                EntityUtils.consume(entity);
            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                // 释放资源
                if (response != null) {
                    response.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return responseContent;
    }

    /**
     * 发送Post请求
     *
     * @param httpPut
     * @return
     */
    private static String sendHttpPut(HttpPut httpPut) {
        CloseableHttpClient httpClient = null;
        CloseableHttpResponse response = null;
        // 响应内容
        String responseContent = null;
        try {
            // 创建默认的httpClient实例.
            httpClient = getHttpClient();
            // 配置请求信息
            httpPut.setConfig(requestConfig);
            // 执行请求
            response = httpClient.execute(httpPut);
            // 得到响应实例
            HttpEntity entity = response.getEntity();

            // 可以获得响应头
            // Header[] headers = response.getHeaders(HttpHeaders.CONTENT_TYPE);
            // for (Header header : headers) {
            // System.out.println(header.getName());
            // }

            // 得到响应类型
            // System.out.println(ContentType.getOrDefault(response.getEntity()).getMimeType());

            // 判断响应状态
            if (response.getStatusLine().getStatusCode() >= 300) {
                throw new Exception(
                        "HTTP Request is not success, Response code is " + response.getStatusLine().getStatusCode());
            }

            if (HttpStatus.SC_OK == response.getStatusLine().getStatusCode() || HttpStatus.SC_CREATED == response.getStatusLine().getStatusCode()) {
                responseContent = EntityUtils.toString(entity, CHARSET_UTF_8);
                EntityUtils.consume(entity);
            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                // 释放资源
                if (response != null) {
                    response.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return responseContent;
    }

    /**
     * 发送Post请求
     *
     * @param httpDelete
     * @return
     */
    private static String sendHttpDelete(HttpDelete httpDelete) {
        CloseableHttpClient httpClient = null;
        CloseableHttpResponse response = null;
        // 响应内容
        String responseContent = null;
        try {
            // 创建默认的httpClient实例.
            httpClient = getHttpClient();
            // 配置请求信息
            httpDelete.setConfig(requestConfig);
            // 执行请求
            response = httpClient.execute(httpDelete);
            // 得到响应实例
            HttpEntity entity = response.getEntity();

            // 可以获得响应头
            // Header[] headers = response.getHeaders(HttpHeaders.CONTENT_TYPE);
            // for (Header header : headers) {
            // System.out.println(header.getName());
            // }

            // 得到响应类型
            // System.out.println(ContentType.getOrDefault(response.getEntity()).getMimeType());

            // 判断响应状态
            if (response.getStatusLine().getStatusCode() >= 300) {
                throw new Exception(
                        "HTTP Request is not success, Response code is " + response.getStatusLine().getStatusCode());
            }

            if (HttpStatus.SC_OK == response.getStatusLine().getStatusCode() || HttpStatus.SC_CREATED == response.getStatusLine().getStatusCode()) {
                responseContent = EntityUtils.toString(entity, CHARSET_UTF_8);
                EntityUtils.consume(entity);
            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                // 释放资源
                if (response != null) {
                    response.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return responseContent;
    }

    /**
     * 发送Get请求
     *
     * @param httpGet
     * @return
     */
    private static String sendHttpGet(HttpGet httpGet) {

        CloseableHttpClient httpClient = null;
        CloseableHttpResponse response = null;
        // 响应内容
        String responseContent = null;
        try {
            // 创建默认的httpClient实例.
            httpClient = getHttpClient();
            // 配置请求信息
            httpGet.setConfig(requestConfig);
            // 执行请求
            response = httpClient.execute(httpGet);
            // 得到响应实例
            HttpEntity entity = response.getEntity();

            // 可以获得响应头
            // Header[] headers = response.getHeaders(HttpHeaders.CONTENT_TYPE);
            // for (Header header : headers) {
            // System.out.println(header.getName());
            // }

            // 得到响应类型
            // System.out.println(ContentType.getOrDefault(response.getEntity()).getMimeType());

            // 判断响应状态
            if (response.getStatusLine().getStatusCode() >= 300) {
                throw new Exception(
                        "HTTP Request is not success, Response code is " + response.getStatusLine().getStatusCode());
            }

            if (HttpStatus.SC_OK == response.getStatusLine().getStatusCode()) {
                responseContent = EntityUtils.toString(entity, CHARSET_UTF_8);
                EntityUtils.consume(entity);
            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                // 释放资源
                if (response != null) {
                    response.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return responseContent;
    }


    /**
     * 发送 post请求
     *
     * @param httpUrl 地址
     */
    public static String sendHttpPost(String httpUrl) {
        // 创建httpPost
        HttpPost httpPost = new HttpPost(httpUrl);
        return sendHttpPost(httpPost);
    }

    /**
     * 发送 delete请求
     *
     * @param httpUrl 地址
     */
    public static String sendHttpDelete(String httpUrl) {
        // 创建httpPost
        HttpDelete httpDelete = new HttpDelete(httpUrl);
        return sendHttpDelete(httpDelete);
    }


    /**
     * 发送 post请求
     *
     * @param httpUrl 地址
     */
    public static String sendHttpPostWithHeader(String httpUrl, Map<String, String> headerMap) {
        // 创建httpPost
        HttpPost httpPost = new HttpPost(httpUrl);
        for (Map.Entry<String, String> entry : headerMap.entrySet()) {
            httpPost.setHeader(entry.getKey(), entry.getValue());
        }
        return sendHttpPost(httpPost);
    }

    /**
     * 发送 get请求
     *
     * @param httpUrl
     */
    public static String sendHttpGet(String httpUrl) {
        // 创建get请求
        HttpGet httpGet = new HttpGet(httpUrl);
        return sendHttpGet(httpGet);
    }

    /**
     * 发送 delete请求带请求头
     */
    public static String sendHttpDeleteWithHeader(String httpUrl, Map<String, String> headerMap) {
        // 创建get请求
        HttpDelete httpDelete = new HttpDelete(httpUrl);
        for (Map.Entry<String, String> entry : headerMap.entrySet()) {
            httpDelete.setHeader(entry.getKey(), entry.getValue());
        }
        return sendHttpDelete(httpDelete);
    }

    /**
     * 发送 get请求带请求头
     */
    public static String sendHttpGetWithHeader(String httpUrl, Map<String, String> headerMap) {
        // 创建get请求
        HttpGet httpGet = new HttpGet(httpUrl);
        for (Map.Entry<String, String> entry : headerMap.entrySet()) {
            httpGet.setHeader(entry.getKey(), entry.getValue());
        }
        return sendHttpGet(httpGet);
    }

    /**
     * 发送 delete请求带请求头
     */
    public static String sendHttpDeleteJsonWithHeader(String httpUrl, String paramsJson, Map<String, String> headerMap) {
        StringBuffer content = new StringBuffer();
        try {
            URL url = new URL(httpUrl);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("DELETE");
            connection.setDoInput(true);
            connection.setDoOutput(true);
            connection.setRequestProperty("Content-Type", "application/json;charset=UTF-8");
            for (Map.Entry<String, String> entry : headerMap.entrySet()) {
                connection.setRequestProperty(entry.getKey(), entry.getValue());
            }
            PrintWriter printWriter = new PrintWriter(connection.getOutputStream());
            printWriter.write(paramsJson);
            printWriter.flush();

            BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String line;
            while ((line = br.readLine()) != null) {
                content.append(line);
            }
            br.close();
            connection.disconnect();
        } catch (Exception e) {

        }
        return content.toString();
    }

    /**
     * 发送 post请求
     *
     * @param httpUrl 地址
     * @param params  参数(格式:key1=value1&key2=value2)
     */
    public static String sendHttpPost(String httpUrl, String params) {
        HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost
        try {
            // 设置参数
            if (params != null && params.trim().length() > 0) {
                StringEntity stringEntity = new StringEntity(params, "UTF-8");
                stringEntity.setContentType(CONTENT_TYPE_FORM_URL);
                httpPost.setEntity(stringEntity);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sendHttpPost(httpPost);
    }

    /**
     * 发送 post请求
     *
     * @param maps 参数
     */
    public static String sendHttpPost(String httpUrl, Map<String, String> maps) {
        String parem = convertStringParamter(maps);
        return sendHttpPost(httpUrl, parem);
    }


    /**
     * 发送 post请求 发送json数据
     *
     * @param httpUrl    地址
     * @param paramsJson 参数(格式 json)
     */
    public static String sendHttpPostJsonWithHeader(String httpUrl, String paramsJson, Map<String, String> headerMap) {
        HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost
        try {
            for (Map.Entry<String, String> entry : headerMap.entrySet()) {
                httpPost.setHeader(entry.getKey(), entry.getValue());
            }
            // 设置参数
            if (paramsJson != null && paramsJson.trim().length() > 0) {
                StringEntity stringEntity = new StringEntity(paramsJson, "UTF-8");
                stringEntity.setContentType(CONTENT_TYPE_JSON_URL);
                httpPost.setEntity(stringEntity);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sendHttpPost(httpPost);
    }

    /**
     * 发送 put请求 发送json数据
     *
     * @param httpUrl    地址
     * @param paramsJson 参数(格式 json)
     */
    public static String sendHttpPutJsonWithHeader(String httpUrl, String paramsJson, Map<String, String> headerMap) {
        HttpPut httpPost = new HttpPut(httpUrl);// 创建HttpPut
        try {
            for (Map.Entry<String, String> entry : headerMap.entrySet()) {
                httpPost.setHeader(entry.getKey(), entry.getValue());
            }
            // 设置参数
            if (paramsJson != null && paramsJson.trim().length() > 0) {
                StringEntity stringEntity = new StringEntity(paramsJson, "UTF-8");
                stringEntity.setContentType(CONTENT_TYPE_JSON_URL);
                httpPost.setEntity(stringEntity);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sendHttpPut(httpPost);
    }

    /**
     * 发送 post请求 发送json数据
     *
     * @param httpUrl    地址
     * @param paramsJson 参数(格式 json)
     */
    public static String sendHttpPostJson(String httpUrl, String paramsJson) {
        HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost
        try {
            // 设置参数
            if (paramsJson != null && paramsJson.trim().length() > 0) {
                StringEntity stringEntity = new StringEntity(paramsJson, "UTF-8");
                stringEntity.setContentType(CONTENT_TYPE_JSON_URL);
                httpPost.setEntity(stringEntity);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sendHttpPost(httpPost);
    }

    /**
     * 发送 post请求 发送xml数据
     *
     * @param httpUrl   地址
     * @param paramsXml 参数(格式 Xml)
     */
    public static String sendHttpPostXml(String httpUrl, String paramsXml) {
        HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost
        try {
            // 设置参数
            if (paramsXml != null && paramsXml.trim().length() > 0) {
                StringEntity stringEntity = new StringEntity(paramsXml, "UTF-8");
                stringEntity.setContentType(CONTENT_TYPE_TEXT_HTML);
                httpPost.setEntity(stringEntity);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sendHttpPost(httpPost);
    }


    /**
     * 将map集合的键值对转化成：key1=value1&key2=value2 的形式
     *
     * @param parameterMap 需要转化的键值对集合
     * @return 字符串
     */
    private static String convertStringParamter(Map parameterMap) {
        StringBuffer parameterBuffer = new StringBuffer();
        if (parameterMap != null) {
            Iterator iterator = parameterMap.keySet().iterator();
            String key = null;
            String value = null;
            while (iterator.hasNext()) {
                key = (String) iterator.next();
                if (parameterMap.get(key) != null) {
                    value = (String) parameterMap.get(key);
                } else {
                    value = "";
                }
                parameterBuffer.append(key).append("=").append(value);
                if (iterator.hasNext()) {
                    parameterBuffer.append("&");
                }
            }
        }
        return parameterBuffer.toString();
    }
}