package pt.utl.ist.fenix.tools.file.rmi;

import java.io.File;
import java.io.IOException;
import java.rmi.Remote;
import java.rmi.RemoteException;

import pt.utl.ist.fenix.tools.file.FileSet;
import pt.utl.ist.fenix.tools.file.FileSetDescriptor;
import pt.utl.ist.fenix.tools.file.VirtualPath;
import pt.utl.ist.fenix.tools.file.dspace.FileSetDeleteException;
import pt.utl.ist.fenix.tools.file.dspace.FileSetDeleteRequest;
import pt.utl.ist.fenix.tools.file.dspace.FileSetPermissionChangeException;
import pt.utl.ist.fenix.tools.file.dspace.FileSetPermissionChangeRequest;
import pt.utl.ist.fenix.tools.file.dspace.FileSetUploadException;
import pt.utl.ist.fenix.tools.file.dspace.FileSetUploadRequest;

public abstract class AbstractRemoteFileSetManager implements IRemoteFileSetManager {

	public AbstractRemoteFileSetManager() {
		super();
	}

	private Remote remoteRef=null;
	public Remote getRemoteRef() throws RemoteException
	{
		if(remoteRef==null)
		{
			remoteRef=RMIConfig.getInstance().exportObject(this);
		}
		
		return remoteRef;
	}
	
	public FileSetDescriptor uploadFileSet(IRemoteFile remoteBaseDir,FileSetUploadRequest request, String username, String password)
			throws FileSetUploadException, RemoteException {
		try {
			return uploadFileSet(new File(remoteBaseDir.getAbsolutePath()), request.getOriginalFilename(), request.getPath(), request.getFileSet(), username, password);
		}
		catch (IOException e) {
			throw new RemoteException(e.getMessage(),e);
		}
	}
	

	public void changeFileSetPermissions(FileSetPermissionChangeRequest request, String username, String password)
			throws FileSetPermissionChangeException, RemoteException {
		try {
			changeFileSetPermissions(request.getFileSetDescriptor(), request.isPrivateFile().booleanValue(), username, password);
		}
		catch (IOException e) {
			throw new RemoteException(e.getMessage(),e);
		}
	}
	
	
	public void deleteFileSet(FileSetDeleteRequest request, String username, String password)
			throws FileSetDeleteException, RemoteException {
		
		try {
			deleteFileSet(request.getFileSetDescriptor(), username, password);
		}
		catch (IOException e) {
			throw new RemoteException(e.getMessage(),e);
		}
	}
	

	public IRemoteFile getBaseRemoteDir(String username, String password) throws RemoteException {
		RemoteFileImpl remoteFileImpl;
		try {
			remoteFileImpl = new RemoteFileImpl(createTemporaryUploadDirectory(username,password));
		}
		catch (IOException e) {
			throw new RemoteException(e.getMessage(),e);
		}
		return (IRemoteFile)RMIConfig.getInstance().exportObject(remoteFileImpl);
	}

	public IRemoteFile retrieveBaseRemoteDir(FileSetDescriptor descriptor, String username, String password) throws RemoteException {
		RemoteFileImpl remoteFileImpl;
		try {
			remoteFileImpl = new RemoteFileImpl(materializeFileSetToTemporaryDirectory(descriptor, username, password));
		}
		catch (IOException e) {
			throw new RemoteException(e.getMessage(),e);
		}
		return (IRemoteFile)RMIConfig.getInstance().exportObject(remoteFileImpl);
	}
	
	
	public abstract FileSetDescriptor uploadFileSet(File baseDir,String originalFileName,VirtualPath path,FileSet fs,String username,String password) throws IOException;
	public abstract File createTemporaryUploadDirectory(String username,String password) throws IOException;
	public abstract File materializeFileSetToTemporaryDirectory(FileSetDescriptor descriptor,String username,String password) throws IOException;
}