//Copy the specified fields from the item being edited to the given item.
//
//@param Field:longtext CopyField
//The long text field to copy from one item to the other
//
//@param Field:attachment CopyFieldAttachments
//The Attachmnet field associated with the long text field to copy from one item to the other
//
//@param String Item
//The item to copy to
//

function print(s)
{
    eb.setMessageCategory("DEBUG");
	eb.print(s);
}

function cleanDir(dir)
{
	if (dir.isDirectory()) 
	{
		var children = dir.listFiles();
		for( var i = 0; i < children.length; i++ ) 
		{
			cleanDir(children[i])
		}
	}
        
	// Delete the top level dir and low level files
	var deleted = (new java.io.File(dir.getAbsolutePath()))["delete"]();	
}

// copies a text field from source to target items
function copyField(source,target,field)
{
	var sourceFieldContents = source.getNewFieldValue(field);
	target.setFieldValue(textField,sourceFieldContents);
	
}

function copyAttachments(source, target, attachField)
{
	// Setup a temporary directory to extract the attachments
	var tmpDir = new java.io.File(integrityDir + fs + "data" + fs + "tmp" + fs + source.getID());
	
	var attachmentBeans = source.getAttachmentBeans(attachField);
	if( null != attachmentBeans && attachmentBeans.length > 0 )
	{
		var attachDir = new java.io.File(tmpDir.getAbsolutePath() + fs + attachField);
		// Create the temporary directory (per item/per field), if it doesn't exist
		if( ! attachDir.isDirectory() )
		{
			attachDir.mkdirs();
		}

		// Extract each attachment and add it to the new clone
		for( var i = 0; i < attachmentBeans.length; i++ )
		{
			var attachBean = attachmentBeans[i];
			var outputFile = new java.io.File(attachDir.getAbsolutePath() + fs + attachBean.getName());
			var outputStream = new java.io.FileOutputStream(outputFile);
			attachBean.getContent(outputStream) ;
			outputStream.close();					
			target.addAttachment(outputFile.getAbsolutePath(), attachBean.getContentType(), attachField);					
			}
		}
	
	// Clean up the temporary directory created
	cleanDir(tmpDir);
}

var eb = bsf.lookupBean("siEnvironmentBean");
var fs	= java.lang.System.getProperty( "file.separator" );
var params = bsf.lookupBean("parametersBean");
var integrityDir=eb.getInstallDirectory();
var sb = bsf.lookupBean("imServerBean");
var textField = params.getParameter("CopyField");
var attachmentField = params.getParameter("CopyFieldAttachments");
var targetItem = params.getParameter("Item");


var source = bsf.lookupBean("imIssueDeltaBean");
var target = sb.getIssueDeltaBean(targetItem);

print("Copy fields " + textField + " and " + attachmentField + " from " + source.getID() + " to " + targetItem);

copyField(source, target, textField);
copyAttachments(source, target, attachmentField);