import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import org.apache.cxf.common.util.Base64Utility;

public class PDF_Alchemy_Upload {
  private static final String ACCESS_KEY_ID="xxxxxxxxxxxxxxxxxxxx";
  private static final String SECRET_ACCESS_KEY="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
  private static final String HMAC_SHA1="HMACSHA1";

  // Uploads a single file to PDF Alchemy.
  private static void uploadFile(File file) {
    System.out.print("Uploading '"+file.getName()+"': ");
    try {
      // Generate the HMAC-SHA1 signature.
      SimpleDateFormat dateFormat=new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss 'GMT'");
      dateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
      String date=dateFormat.format(new Date());
      String request='/'+ACCESS_KEY_ID+"/inqueue/"+URLEncoder.encode(file.getName(),"UTF-8");
      String clearText="PUT\n"+ACCESS_KEY_ID+'\n'+date+'\n'+request;
      Mac mac = Mac.getInstance(HMAC_SHA1);
      mac.init(new SecretKeySpec(SECRET_ACCESS_KEY.getBytes(),HMAC_SHA1));
      String signature=Base64Utility.encode(mac.doFinal(clearText.getBytes()));

      // Set up the PDF Alchemy upload request.
      HttpURLConnection conn=(HttpURLConnection)((new URL("http://www.pdfalchemy.com"+request)).openConnection());
      conn.setDoOutput(true);
      conn.setRequestMethod("PUT");
      conn.setRequestProperty("date",date);
      conn.setRequestProperty("X-PDF-Alchemy-Signature",signature);

      // Send the file data to PDF Alchemy.
      FileInputStream fileStream=new FileInputStream(file);
      OutputStream outStream=conn.getOutputStream();
      byte buffer[]=new byte[10*1024];
      int bytesRead;
      while ((bytesRead=fileStream.read(buffer))>=0)
        outStream.write(buffer,0,bytesRead);
      outStream.close();
      fileStream.close();

      // Read the response (the PDF Alchemy document ID XML).
      BufferedReader reader=new BufferedReader(new InputStreamReader(conn.getInputStream()));
      String line;
      while ((line=reader.readLine())!=null)
        System.out.println(line);
      reader.close();
    } catch (Exception e) {
      System.out.println(e.toString());
    }
  }

  // Uploads all convertable files from a single directory, to PDF Alchemy.
  private static void uploadFilesInDir(File dir) {
    for (File file : dir.listFiles())
      if ((file.getName().endsWith(".doc"))||(file.getName().endsWith(".docx"))||
          (file.getName().endsWith(".rtf"))||(file.getName().endsWith(".txt")))
        uploadFile(file);
  }

  public static void main(String[] args) {
    for (String arg : args) {
      File file=new File(arg);
      if (file.isDirectory())
         uploadFilesInDir(file);
      else
         uploadFile(file);
    }
  }

}