EDIT

// $Id$

/**

* Copyright (C) 2009 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.api.service;

import java.util.ArrayList;

import java.util.HashSet;

import java.util.List;

import java.util.Set;

import org.apache.log4j.Logger;

import eu.etaxonomy.cdm.model.common.CdmBase;

import eu.etaxonomy.cdm.model.common.IIdentifiableEntity;

/**

 * This class represents the result of a delete action.

 *

 * @author a.mueller

 * @date 04.01.2012

 *

 */

public class DeleteResult {

	@SuppressWarnings("unused")

	private static final Logger logger = Logger.getLogger(DeleteResult.class);

	private DeleteStatus status = DeleteStatus.OK;

	private final List<Exception> exceptions = new ArrayList<Exception>();

	private final Set<CdmBase> relatedObjects = new HashSet<CdmBase>();

//	private Set<PersistPair> objectsToDelete = new HashSet<PersistPair>();

//

//	private Set<PersistPair> objectsToSave = new HashSet<DeleteResult.PersistPair>();

//	protected class PersistPair{

//		protected CdmBase objectToPersist;

//		protected ICdmEntityDao<CdmBase> dao;

//	}

	public enum DeleteStatus {

		OK(0),

		ABORT(1),

		ERROR(3),

		;

		protected Integer severity;

		private DeleteStatus(int severity){

			this.severity = severity;

		}

		public int compareSeverity(DeleteStatus other){

			return this.severity.compareTo(other.severity);

		}

	}

//***************************** GETTER /SETTER /ADDER *************************/

	/**

	 * The resuting status of a delete action.

	 *

	 * @see DeleteStatus

	 * @return

	 */

	public DeleteStatus getStatus() {

		return status;

	}

	public void setStatus(DeleteStatus status) {

		this.status = status;

	}

	/**

	 * The highest exception that occurred during delete (if any).

	 * @return

	 */

	public List<Exception> getExceptions() {

		return exceptions;

	}

	public void addException(Exception exception) {

		this.exceptions.add(exception);

	}

	public void addExceptions(List<Exception> exceptions) {

		this.exceptions.addAll(exceptions);

	}

	/**

	 * Related objects that prevent the delete action to take place.

	 * @return

	 */

	public Set<CdmBase> getRelatedObjects() {

		return relatedObjects;

	}

	public void addRelatedObject(CdmBase relatedObject) {

		this.relatedObjects.add(relatedObject);

	}

	public void addRelatedObjects(Set<? extends CdmBase> relatedObjects) {

		this.relatedObjects.addAll(relatedObjects);

	}

//	/**

//	 * @return

//	 */

//	public Set<PersistPair> getObjectsToDelete() {

//		return objectsToDelete;

//	}

//	public void setObjectsToDelete(Set<PersistPair> objectsToDelete) {

//		this.objectsToDelete = objectsToDelete;

//	}

//

//	/**

//	 * @return

//	 */

//	public Set<PersistPair> getObjectsToSave() {

//		return objectsToSave;

//	}

//	public void setObjectsToSave(Set<PersistPair> objectsToSave) {

//		this.objectsToSave = objectsToSave;

//	}

//****************** CONVENIENCE *********************************************/

	/**

	 * Sets the status to {@link DeleteStatus#ERROR} if not yet set to a more serious

	 * status.

	 */

	public void setError(){

		setMaxStatus(DeleteStatus.ERROR);

	}

	/**

	 * Sets the status to {@link DeleteStatus#ABORT} if not yet set to a more serious

	 * status.

	 */

	public void setAbort(){

		setMaxStatus(DeleteStatus.ABORT);

	}

	/**

	 * Sets status to most severe status. If maxStatus is more severe then existing status

	 * existing status is set to maxStatus. Otherwise nothing changes.

	 * If minStatus is more severe then given status minStatus will be the new status.

	 * @param maxStatus

	 */

	public void setMaxStatus(DeleteStatus maxStatus) {

		if (this.status.compareSeverity(maxStatus) < 0){

			this.status = maxStatus;

		}

	}

	public void includeResult(DeleteResult includedResult){

		this.setMaxStatus(includedResult.getStatus());

		this.addExceptions(includedResult.getExceptions());

		this.addRelatedObjects(includedResult.getRelatedObjects());

	}

	public boolean isOk(){

		return this.status == DeleteStatus.OK;

	}

	public boolean isAbort(){

		return this.status == DeleteStatus.ABORT;

	}

	public boolean isError(){

		return this.status == DeleteStatus.ERROR;

	}

	@Override

	public String toString(){

	    String separator = ", ";

	    String exceptionString = "";

	    for (Exception exception : exceptions) {

            exceptionString += exception.getLocalizedMessage()+separator;

        }

	    if(exceptionString.endsWith(separator)){

	        exceptionString = exceptionString.substring(0, exceptionString.length()-separator.length());

	    }

	    String relatedObjectString = "";

	    for (CdmBase relatedObject: relatedObjects) {

	        if(relatedObject instanceof IIdentifiableEntity){

	            relatedObjectString += ((IIdentifiableEntity) relatedObject).getTitleCache()+separator;

	        }

	        else{

	            relatedObjectString += relatedObject.toString()+separator;

	        }

	    }

	    if(relatedObjectString.endsWith(separator)){

	        relatedObjectString = relatedObjectString.substring(0, relatedObjectString.length()-separator.length());

	    }

		return "[DeleteResult]\n" +

				"Status: " + status.toString()+"\n" +

						"Exceptions: " + exceptionString+"\n" +

								"Related Objects: "+relatedObjectString;

	}

}