package org.gcube.data.transfer.library;

import java.io.File;
import java.net.URL;

import org.gcube.data.transfer.library.faults.InvalidSourceException;
import org.gcube.data.transfer.library.faults.SourceNotSetException;
import org.gcube.data.transfer.library.model.Source;


public abstract class Transferer {

	
	
	
	protected Source source=null;
	
	
	public Transferer localFile(File f){
		
	}
	
	public Transferer localFile(String path){
		
	}
	
	public Transferer storageFileId(String fileId){
		
	}
	
	public Transferer fromURL(URL sourceURL){
		
	}
	
	
	public TransferResult transfer() throws SourceNotSetException, InvalidSourceException{
		checkSource();
		source.prepare();
		TransferResult result=doTheTransfer();
		source.clean();
		return result;
	}
	
	
	protected void checkSource() throws SourceNotSetException, InvalidSourceException{
		if(source==null) throw new SourceNotSetException();
		source.validate();
	}
	
	protected abstract TransferResult doTheTransfer();
	
	
	
	
}