/**
 * The contents of this file are subject to the OpenMRS Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://license.openmrs.org
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 *
 * Copyright (C) OpenMRS, LLC.  All Rights Reserved.
 */
package org.openmrs.propertyeditor;

import java.beans.PropertyEditorSupport;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.openmrs.Drug;
import org.openmrs.api.ConceptService;
import org.openmrs.api.context.Context;
import org.springframework.util.StringUtils;

/**
 * Behaviors: Group vetted on 22/Aug/2008 at 2:22pm
 */
public class DrugEditor extends PropertyEditorSupport {
	
	private Log log = LogFactory.getLog(this.getClass());
	
	public DrugEditor() {
	}
	
	/**
	 * Sets the value of the property editor given the drug identifier.
	 * 
	 * @see java.beans.PropertyEditorSupport#setAsText(java.lang.String)
	 * @should set value to the drug with the specified identifier
	 * @should set value to null if given empty string
	 * @should set value to null if given null value
	 * @should fail if drug does not exist with non-empty identifier
	 */
	public void setAsText(String text) throws IllegalArgumentException {
		ConceptService es = Context.getConceptService();
		if (StringUtils.hasText(text)) {
			try {
				setValue(es.getDrug(Integer.valueOf(text)));
			}
			catch (Exception ex) {
				log.error("Error setting text: " + text, ex);
				throw new IllegalArgumentException("Drug not found: " + ex.getMessage());
			}
		} else {
			setValue(null);
		}
	}
	
	/**
	 * Gets the drug identifier associated with this property editor.
	 * 
	 * @see java.beans.PropertyEditorSupport#getAsText()
	 * @should return drug identifier as string when editor has a value
	 * @should return empty string when editor has a null value
	 */
	public String getAsText() {
		Drug d = (Drug) getValue();
		if (d == null) {
			return "";
		} else {
			return d.getDrugId().toString();
		}
	}
	
}