package org.jtheque.primary.services.impl;

 /*

  * This file is part of JTheque.

  *

  * JTheque is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, either version 3 of the License.

  *

  * JTheque is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with JTheque.  If not, see <http://www.gnu.org/licenses/>.

  */

 import org.jtheque.core.managers.Managers;

 import org.jtheque.core.managers.language.ILanguageManager;

 import org.jtheque.core.managers.persistence.able.DataListener;

 import org.jtheque.primary.PrimaryUtils;

 import org.jtheque.primary.dao.able.IDaoCollections;

 import org.jtheque.primary.od.able.Collection;

 import org.jtheque.primary.services.able.ICollectionsService;

 import org.jtheque.utils.StringUtils;

 import org.jtheque.utils.io.FileUtils;

 import org.springframework.transaction.annotation.Transactional;

 import javax.annotation.Resource;

 /**

  * The implementation of the collections service.

  *

  * @author Baptiste Wicht

  */

 public final class CollectionsService implements ICollectionsService {

         @Resource

         private IDaoCollections daoCollections;

         /**

          * Return an empty collection.

          *

          * @return An empty collection.

          */

         private Collection getEmptyCollection(){

                 Collection emptyCollection = daoCollections.createCollection();

                 emptyCollection.setTitle(Managers.getManager(ILanguageManager.class).getMessage("generic.view.actions.new"));

                 emptyCollection.setProtection(false);

                 emptyCollection.setPassword("");

                 return emptyCollection;

         }

         /**

          * Indicate if a login is correct or not

          *

          * @param title The title of the collection.

          * @param password The password to login to the collection.

          *

          * @return true if the login is correct else false.

          */

         private boolean isLoginIncorrect(String title, String password){

                 Collection collection = daoCollections.getCollection(title);

                 if (collection == null){

                         return true;

                 }

                 if (collection.isProtection()){

                         String encrypted = FileUtils.encryptKey(password);

                         if (!encrypted.equals(collection.getPassword())){

                                 return true;

                         }

                 }

                 return false;

         }

         /**

          * Create a collection.

          *

          * @param title The title of the collection.

          * @param password The password of the collection.

          */

         @Transactional

         private void createCollection(String title, String password){

                 Collection collection = getEmptyCollection();

                 collection.setPrimaryImpl(PrimaryUtils.getPrimaryImpl());

                 collection.setTitle(title);

                 if (StringUtils.isEmpty(password)){

                         collection.setProtection(false);

                 } else {

                         collection.setProtection(true);

                         collection.setPassword(FileUtils.encryptKey(password));

                 }

                 daoCollections.create(collection);

         }

         @Override

         public void createCollectionAndUse(String title, String password){

                 createCollection(title, password);

                 daoCollections.setCurrentCollection(daoCollections.getCollection(title));

         }

         @Override

         public boolean login(String title, String password){

                 if (isLoginIncorrect(title, password)){

                         return false;

                 }

                 daoCollections.setCurrentCollection(daoCollections.getCollection(title));

                 return true;

         }

         @Override

         public java.util.Collection<Collection> getDatas(){

                 return daoCollections.getCollections();

         }

         @Override

         public void addDataListener(DataListener listener){

                 daoCollections.addDataListener(listener);

         }

         @Override

         @Transactional

         public void clearAll(){

                 daoCollections.clearAll();

         }

         @Override

         public String getDataType(){

                 return DATA_TYPE;

         }

 }