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package me.chanjar.weixin.common.util.http.apache;

import me.chanjar.weixin.common.error.WxError;
import me.chanjar.weixin.common.error.WxErrorException;
import me.chanjar.weixin.common.util.http.RequestHttp;
import me.chanjar.weixin.common.util.http.SimplePostRequestExecutor;
import org.apache.http.Consts;
import org.apache.http.HttpHost;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;

import java.io.IOException;

/**
 * Created by ecoolper on 2017/5/4.
 */
public class ApacheSimplePostRequestExecutor extends SimplePostRequestExecutor {

  public ApacheSimplePostRequestExecutor(RequestHttp requestHttp) {
    super(requestHttp);
  }

  @Override
  public String execute(String uri, String postEntity) throws WxErrorException, IOException {
    HttpPost httpPost = new HttpPost(uri);
    if (requestHttp.getRequestHttpProxy() != null) {
      RequestConfig config = RequestConfig.custom().setProxy(requestHttp.getRequestHttpProxy()).build();
      httpPost.setConfig(config);
    }

    if (postEntity != null) {
      StringEntity entity = new StringEntity(postEntity, Consts.UTF_8);
      httpPost.setEntity(entity);
    }

    try (CloseableHttpResponse response = requestHttp.getRequestHttpClient().execute(httpPost)) {
      String responseContent = Utf8ResponseHandler.INSTANCE.handleResponse(response);
      if (responseContent.isEmpty()) {
        throw new WxErrorException(WxError.builder().errorCode(9999).errorMsg("无响应内容").build());
      }

      if (responseContent.startsWith("")) {
        //xml格式输出直接返回
        return responseContent;
      }

      WxError error = WxError.fromJson(responseContent);
      if (error.getErrorCode() != 0) {
        throw new WxErrorException(error);
      }
      return responseContent;
    } finally {
      httpPost.releaseConnection();
    }
  }
}