package org.jtheque.core.managers.module;

 /*

  * 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.module.beans.ModuleContainer;

 import org.jtheque.utils.StringUtils;

 import java.util.Comparator;

 /**

  * @author Baptiste Wicht

  */

 final class ModuleComparator implements Comparator<ModuleContainer> {

     @Override

     public int compare(ModuleContainer o1, ModuleContainer o2) {

         //First the modules without dependency

         if (hasDependency(o1) && !hasDependency(o2)) {

             return -1;

         }

         //And finally all the others

         return 0;

     }

     /**

      * Indicate if the module has dependency or not.

      *

      * @param module The module to test.

      * @return true if the module has dependency else false.

      */

     private static boolean hasDependency(ModuleContainer module) {

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

     }

 }