DropBoxClient.java

/**
 * 
 */
package org.lodder.subtools.sublibrary.util.http;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.dropbox.core.DbxException;
import com.dropbox.core.DbxRequestConfig;
import com.dropbox.core.v2.DbxClientV2;

/**
 * @author lodder
 * 
 */
public class DropBoxClient {

  private static DropBoxClient dbc;
  private DbxClientV2 dbxClient;
  private String locationOffset = "/Ondertitels/PrivateRepo/";
  private String unSortedLocationOffset = "/Ondertitels/Unsorted";

  private static final Logger LOGGER = LoggerFactory.getLogger(DropBoxClient.class);

  DropBoxClient() {
    dropboxInit();
  }

  public static DropBoxClient getDropBoxClient() {
    if (dbc == null) dbc = new DropBoxClient();
    return dbc;
  }

  private void dropboxInit() {
    final String accessToken = "3x5qOT-XdxgAAAAAAAAAAVa2Hrj23e7EiO98AZqw-UqGEr7I4lJG6eL8M1s9LlG0";

    DbxRequestConfig config = new DbxRequestConfig("PersonalDownload/1.0");	

    dbxClient = new DbxClientV2(config, accessToken);
  }

  public boolean doDownloadFile(String location, File output) {
    boolean success = false;
    try (FileOutputStream outputStream = new FileOutputStream(output)) {
      dbxClient.files().download(locationOffset + location).download(outputStream);
      success = true;
      outputStream.close();
    } catch (DbxException | IOException e) {
      LOGGER.error("doDownloadFile", e);
    }
    return success;
  }

  public void put(File inputFile, String filename, String languageCode) {
    FileInputStream inputStream = null;
    try {
      inputStream = new FileInputStream(inputFile);
      dbxClient.files().upload(unSortedLocationOffset + "/" + languageCode + "/" + filename).uploadAndFinish(inputStream, inputFile.length());
    } catch (DbxException | IOException e) {
      LOGGER.error("upload path: " + unSortedLocationOffset + "/" + languageCode + "/" + filename );
      LOGGER.error("put", e);
    } finally {
      if (inputStream != null) {
        try {
          inputStream.close();
        } catch (IOException e) {
          LOGGER.error("put close inputStream", e);
        }
      }
    }
  }

  /**
   * @param location
   * @return
   */
  public String getFile(String location) {
    String content = "";
    try {
      ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
      dbxClient.files().download(location).download(outputStream);
      content = outputStream.toString("UTF-8");
      outputStream.close();
    } catch (DbxException | IOException e) {
      LOGGER.error("getFile", e);
    }
    return content;
  }

}