package org.jtheque.core.managers.message;

 /*

  * 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.AbstractManager;

 import org.jtheque.core.managers.Managers;

 import org.jtheque.core.managers.log.ILoggingManager;

 import org.jtheque.core.managers.module.IModuleManager;

 import org.jtheque.core.managers.module.beans.ModuleContainer;

 import org.jtheque.core.managers.view.able.IViewManager;

 import org.jtheque.core.utils.file.ReadingException;

 import org.jtheque.utils.StringUtils;

 import org.jtheque.utils.bean.IntDate;

 import java.util.ArrayList;

 import java.util.Collection;

 /**

  * @author Baptiste Wicht

  */

 public final class MessageManager extends AbstractManager implements IMessageManager {

     private final Collection<Message> messages = new ArrayList<Message>(10);

     @Override

     public void loadMessages() {

         messages.clear();

         loadCoreMessages();

         loadApplicationMessages();

         for (ModuleContainer module : Managers.getManager(IModuleManager.class).getModules()) {

             loadModuleMessages(module);

         }

     }

     @Override

     public void displayIfNeeded() {

         IntDate previousDate = Managers.getCore().getConfiguration().getMessagesLastRead();

         for (Message message : messages) {

             if (message.getDate().compareTo(previousDate) > 0) {

                 Managers.getManager(IViewManager.class).getViews().getMessagesView().display();

                 break;

             }

         }

     }

     @Override

     public Collection<Message> getMessages() {

         return messages;

     }

     /**

      * Load all the messages of the module.

      *

      * @param module The module to load messages from.

      */

     private void loadModuleMessages(ModuleContainer module) {

         if (hasMessageFile(module)) {

             loadMessageFile(module.getInfos().messageFileURL());

         }

     }

     /**

      * Indicate if a module has a message file.

      *

      * @param module The module.

      * @return true if the module has a message file else false.

      */

     private static boolean hasMessageFile(ModuleContainer module) {

         return StringUtils.isNotEmpty(module.getInfos().messageFileURL());

     }

     /**

      * Load the messages of the application.

      */

     private void loadApplicationMessages() {

         if (!StringUtils.isEmpty(Managers.getCore().getApplication().getMessageFileURL())) {

             loadMessageFile(Managers.getCore().getApplication().getMessageFileURL());

         }

     }

     /**

      * Load the messages of the core.

      */

     private void loadCoreMessages() {

         loadMessageFile(Managers.getCore().getCoreMessageFileURL());

     }

     /**

      * Load a messages files.

      *

      * @param url The URL of the messages file.

      */

     private void loadMessageFile(String url) {

         try {

             MessageFile file = MessageFileReader.readMessagesFile(url);

             messages.addAll(file.getMessages());

         } catch (ReadingException e) {

             Managers.getManager(ILoggingManager.class).getLogger(getClass()).error(e);

         }

     }

 }