/**
 * The contents of this file are subject to the license and copyright
 * detailed in the LICENSE and NOTICE files at the root of the source
 * tree and available online at
 *
 * http://www.dspace.org/license/
 */

package org.dspace.submit.lookup;

import gr.ekt.bte.core.AbstractModifier;
import gr.ekt.bte.core.MutableRecord;
import gr.ekt.bte.core.Record;

import gr.ekt.bte.core.StringValue;
import gr.ekt.bte.core.Value;

import java.util.ArrayList;
import java.util.List;

import org.apache.commons.lang.StringUtils;

/**
 * @author Andrea Bollini
 * @author Kostas Stamatis
 * @author Luigi Andrea Pascarelli
 * @author Panagiotis Koutsourakis
 */
public class ValueConcatenationModifier extends AbstractModifier
{
    private String field;

    private String separator = ",";

    private boolean whitespaceAfter = true;

    public ValueConcatenationModifier()
    {
        super("ValueConcatenationModifier");
    }

    @Override
    public Record modify(MutableRecord rec)
    {
        List<Value> values = rec.getValues(field);
        if (values != null)
        {
            List<String> converted_values = new ArrayList<String>();
            for (Value val : values)
            {
                converted_values.add(val.getAsString());
            }
            List<Value> final_value = new ArrayList<Value>();
            String v = StringUtils.join(converted_values.iterator(), separator
                    + (whitespaceAfter ? " " : ""));
            final_value.add(new StringValue(v));
            rec.updateField(field, final_value);
        }

        return rec;
    }

    /**
     * @return the field
     */
    public String getField()
    {
        return field;
    }

    /**
     * @param field
     *            the field to set
     */
    public void setField(String field)
    {
        this.field = field;
    }

    /**
     * @return the separator
     */
    public String getSeparator()
    {
        return separator;
    }

    /**
     * @param separator
     *            the separator to set
     */
    public void setSeparator(String separator)
    {
        this.separator = separator;
    }

    /**
     * @return the whiteSpaceAfter
     */
    public boolean isWhitespaceAfter()
    {
        return whitespaceAfter;
    }

    /**
     * @param whiteSpaceAfter
     *            the whiteSpaceAfter to set
     */
    public void setWhitespaceAfter(boolean whiteSpaceAfter)
    {
        this.whitespaceAfter = whiteSpaceAfter;
    }
}