package com.sunyo.energy.location.utils;

import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EncodingUtils;
import org.apache.http.util.EntityUtils;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
import java.nio.charset.Charset;
import java.util.Map;

@Slf4j
public class HttpsUtils {

    /**
     * java调用运程api公共方法
     *
     * @param requestUrl
     * @param params
     * @return
     */
    @SuppressWarnings({"unchecked", "rawtypes"})
    public static String httpRequest(String requestUrl, Map params) throws Exception {
        // buffer用于接受返回的字符
        StringBuffer buffer = new StringBuffer();

        // 建立URL，把请求地址给补全，其中urlencode（）方法用于把params里的参数给取出来
        URL url = new URL(requestUrl + "?" + urlencode(params));
        log.info("远程水边传入参数以及路径:{}", url);
        // 打开http连接
        HttpURLConnection httpUrlConn = (HttpURLConnection) url
                .openConnection();
        httpUrlConn.setDoInput(true);
        httpUrlConn.setRequestMethod("GET");
        httpUrlConn.connect();

        // 获得输入
        InputStream inputStream = httpUrlConn.getInputStream();
        InputStreamReader inputStreamReader = new InputStreamReader(
                inputStream, "utf-8");
        BufferedReader bufferedReader = new BufferedReader(inputStreamReader);

        // 将bufferReader的值给放到buffer里
        String str = null;
        while ((str = bufferedReader.readLine()) != null) {
            buffer.append(str);
        }
        // 关闭bufferReader和输入流
        bufferedReader.close();
        inputStreamReader.close();
        inputStream.close();
        inputStream = null;
        // 断开连接
        httpUrlConn.disconnect();

        // 返回字符串
        return buffer.toString();
    }

    /**
     * 请求参数拼接（组装）
     *
     * @param data
     * @return
     */
    @SuppressWarnings("rawtypes")
    public static String urlencode(Map<String, Object> data) throws UnsupportedEncodingException {
        // 将map里的参数变成像 showapi_appid=###&showapi_sign=###&的样子
        StringBuilder sb = new StringBuilder();
        for (Map.Entry i : data.entrySet()) {
            try {
                sb.append(i.getKey()).append("=")
                        .append(URLEncoder.encode(i.getValue() + "", "UTF-8"))
                        .append("&");

            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
        }
        return sb.toString();
    }

    /**
     * 向指定 URL 发送POST方法的请求
     *
     * @param url   发送请求的 URL
     * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return 所代表远程资源的响应结果
     */
    public static String sendPostHttpRequest(String url, String param) {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            URLConnection conn = 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)");
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 1.获取URLConnection对象对应的输出流
            out = new PrintWriter(conn.getOutputStream());
            // 2.中文有乱码的需要将PrintWriter改为如下
            // out=new OutputStreamWriter(conn.getOutputStream(),"UTF-8")
            // 发送请求参数
            out.print(param);
            // 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()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送 POST 请求出现异常！" + e);
            e.printStackTrace();
        }
        // 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 ex) {
                ex.printStackTrace();
            }
        }
        return result;
    }

    /**
     * 发送POST请求
     *
     * @param url        目的地址
     * @param parameters 请求参数，Map类型。
     * @return 远程响应结果
     */
    public static String sendPost(String url, Map<String, Object> parameters) {
        String result = "";// 返回的结果
        BufferedReader in = null;// 读取响应输入流
        PrintWriter out = null;
        StringBuffer sb = new StringBuffer();// 处理请求参数
        String params = "";// 编码之后的参数
        try {
            // 编码请求参数
            if (parameters.size() == 1) {
                for (String name : parameters.keySet()) {
                    sb.append(name).append("=").append(
                            java.net.URLEncoder.encode(parameters.get(name).toString(),
                                    "UTF-8"));
                }
                params = sb.toString();
            } else {
                for (String name : parameters.keySet()) {
                    sb.append(name).append("=").append(
                            java.net.URLEncoder.encode(parameters.get(name).toString(),
                                    "UTF-8")).append("&");
                }
                String temp_params = sb.toString();
                params = temp_params.substring(0, temp_params.length() - 1);
            }
            // 创建URL对象
            java.net.URL connURL = new java.net.URL(url);
            // 打开URL连接
            java.net.HttpURLConnection httpConn = (java.net.HttpURLConnection) connURL
                    .openConnection();
            // 设置通用属性
            httpConn.setRequestProperty("Accept", "*/*");
            httpConn.setRequestProperty("Connection", "Keep-Alive");
            httpConn.setRequestProperty("User-Agent",
                    "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1)");
            // 设置POST方式
            httpConn.setDoInput(true);
            httpConn.setDoOutput(true);
            // 获取HttpURLConnection对象对应的输出流
            out = new PrintWriter(httpConn.getOutputStream());
            // 发送请求参数
            out.write(params);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应，设置编码方式
            in = new BufferedReader(new InputStreamReader(httpConn
                    .getInputStream(), "UTF-8"));
            String line;
            // 读取返回的内容
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (out != null) {
                    out.close();
                }
                if (in != null) {
                    in.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
        return result;
    }
}