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package me.chanjar.weixin.mp.util.http;

import java.io.File;
import java.io.IOException;

import org.apache.commons.io.IOUtils;
import org.apache.http.HttpEntity;
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.ContentType;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.impl.client.CloseableHttpClient;

import me.chanjar.weixin.common.bean.result.WxError;
import me.chanjar.weixin.common.exception.WxErrorException;
import me.chanjar.weixin.common.util.http.RequestExecutor;
import me.chanjar.weixin.common.util.http.Utf8ResponseHandler;
import me.chanjar.weixin.mp.bean.result.WxMediaImgUploadResult;

/**
 * @author miller
 */
public class MediaImgUploadRequestExecutor implements RequestExecutor {
  @Override
  public WxMediaImgUploadResult execute(CloseableHttpClient httpclient, HttpHost httpProxy, String uri, File data) throws WxErrorException, IOException {
    if (data == null) {
      throw new WxErrorException(WxError.newBuilder().setErrorMsg("文件对象为空").build());
    }

    HttpPost httpPost = new HttpPost(uri);
    if (httpProxy != null) {
      RequestConfig config = RequestConfig.custom().setProxy(httpProxy).build();
      httpPost.setConfig(config);
    }

    HttpEntity entity = MultipartEntityBuilder
      .create()
      .addBinaryBody("media", data)
      .setMode(HttpMultipartMode.RFC6532)
      .build();
    httpPost.setEntity(entity);
    httpPost.setHeader("Content-Type", ContentType.MULTIPART_FORM_DATA.toString());
    CloseableHttpResponse response = httpclient.execute(httpPost);
    try {
      String responseContent = Utf8ResponseHandler.INSTANCE.handleResponse(response);
      WxError error = WxError.fromJson(responseContent);
      if (error.getErrorCode() != 0) {
        throw new WxErrorException(error);
      }

      return WxMediaImgUploadResult.fromJson(responseContent);
    } finally {
      IOUtils.closeQuietly(response);
    }
  }
}