/**
    * 
    */
   package org.treetank.access.conf;
   
   import java.io.File;
   import java.io.FileReader;
   import java.io.IOException;
   import java.nio.file.FileSystems;
  import java.security.Key;
  import java.util.Properties;
  
  import javax.crypto.spec.SecretKeySpec;
  
  import org.jclouds.Constants;
  import org.jclouds.filesystem.reference.FilesystemConstants;
  import org.treetank.exception.TTIOException;
  
  import com.google.common.hash.HashFunction;
  import com.google.common.hash.Hashing;
  import com.google.common.io.Files;
  
  /**
   * Standard Module defining standard settings.
   * 
   * @author Sebastian Graf, University of Konstanz
   * 
   */
  public class StandardSettings {
  
      private static byte[] keyValue = new byte[] {
          'k', 'k', 'k', 'k', 'k', 'k', 'k', 'k', 'k', 'k', 'k', 'k', 'k', 'k', 'k', 'k'
      };
      public static final Key KEY = new SecretKeySpec(keyValue, "AES");
      public static final HashFunction HASHFUNC = Hashing.sha512();
  
      public static Properties getProps(final String pathToStorage, final String resource) throws TTIOException {
          Properties properties = new Properties();
          properties.setProperty(ConstructorProps.STORAGEPATH, pathToStorage);
          properties.setProperty(ConstructorProps.RESOURCE, resource);
          properties.setProperty(ConstructorProps.RESOURCEPATH, FileSystems.getDefault().getPath(pathToStorage,
              StorageConfiguration.Paths.Data.getFile().getName(), resource).toString());
          properties.setProperty(ConstructorProps.NUMBERTORESTORE, Integer.toString(4));
  
  //         properties.setProperty(ConstructorProps.JCLOUDSTYPE, "aws-s3");
          properties.setProperty(ConstructorProps.JCLOUDSTYPE, "filesystem");
          // Path not to main storage but to any to simulate remote cloud location.
  
          properties.setProperty(FilesystemConstants.PROPERTY_BASEDIR,FileSystems.getDefault().getPath(pathToStorage,
                  StorageConfiguration.Paths.Data.getFile().getName(), resource, ResourceConfiguration.Paths.Data
                  .getFile().getName()).toString());
          
          String[] awsCredentials = getCredentials();
          if (awsCredentials.length == 0) {
              properties.setProperty(Constants.PROPERTY_CREDENTIAL, "test");
          } else {
              properties.setProperty(Constants.PROPERTY_IDENTITY, awsCredentials[0]);
              properties.setProperty(Constants.PROPERTY_CREDENTIAL, awsCredentials[1]);
          }
  
          // Class name for painter for imagehost
          // properties.setProperty(ImageStoreConstants.PROPERTY_BYTEPAINTER,
          // "org.jclouds.imagestore.imagegenerator.bytepainter.HexadecimalBytesToImagePainter");
          // Class name for imagehost
          // properties.setProperty(ImageStoreConstants.PROPERTY_IMAGEHOSTER,
          // "org.jclouds.imagestore.imagehoster.file.ImageHostFile");
          // properties.setProperty(ImageStoreConstants.PROPERTY_IMAGEHOSTER,
          // "org.jclouds.imagestore.imagehoster.flickr.ImageHostFlickr");
  
          return properties;
  
      }
  
      private static String[] getCredentials() {
          File userStore =
              new File(System.getProperty("user.home"), new StringBuilder(".credentials")
                  .append(File.separator).append("aws.properties").toString());
          if (!userStore.exists()) {
              return new String[0];
          } else {
              Properties props = new Properties();
              try {
                  props.load(new FileReader(userStore));
                  return new String[] {
                      props.getProperty("access"), props.getProperty("secret")
                  };
  
              } catch (IOException exc) {
                  throw new RuntimeException(exc);
              }
          }
  
      }
  
  }