package org.jtheque.core.managers.resource;

 /*

  * 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.beans.IBeansManager;

 import org.jtheque.core.managers.beans.ioc.Ioc;

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

 import org.jtheque.utils.ui.ImageUtils;

 import org.springframework.core.io.Resource;

 import javax.swing.Action;

 import javax.swing.ImageIcon;

 import java.awt.Color;

 import java.awt.image.BufferedImage;

 import java.io.IOException;

 import java.io.InputStream;

 import java.util.HashMap;

 import java.util.Map;

 /**

  * A resource manager implementation.

  * <p/>

  * WARNING : BeansManager must be inited before this manager for his good working.

  *

  * @author Baptiste Wicht

  */

 public final class ResourceManager extends AbstractManager implements IResourceManager {

     private static final int DEFAULT_CACHE_SIZE = 50;

     private final Map<String, JThequeImage> cache = new HashMap<String, JThequeImage>(DEFAULT_CACHE_SIZE);

     @Override

     public ImageIcon getIcon(String baseName, String id, ImageType type) {

         return getIcon(baseName + '/' + id + '.' + type.getExtension());

     }

     @Override

     public ImageIcon getIcon(String id, ImageType type) {

         return getIcon(id + '.' + type.getExtension());

     }

     @Override

     public ImageIcon getIcon(String path) {

         if (isImageNotCached(path)) {

             loadImageInCache(path);

         }

         return cache.get(path) == null ? null : cache.get(path).asIcon();

     }

     @Override

     public BufferedImage getImage(String baseName, String id, ImageType type, int width) {

         return getThumbnail(getImage(baseName, id, type), width);

     }

     @Override

     public BufferedImage getImage(String baseName, String id, ImageType type) {

         return getImage(baseName + '/' + id + '.' + type.getExtension());

     }

     @Override

     public BufferedImage getImage(String id, ImageType type, int width) {

         return getThumbnail(getImage(id, type), width);

     }

     @Override

     public BufferedImage getImage(String id, ImageType type) {

         return getImage(id + '.' + type.getExtension());

     }

     @Override

     public BufferedImage getImage(String id, int width) {

         return getThumbnail(getImage(id), width);

     }

     @Override

     public BufferedImage getImage(String path) {

         if (isImageNotCached(path)) {

             loadImageInCache(path);

         }

         return cache.get(path) == null ? null : cache.get(path).get();

     }

     @Override

     public Color getColor(String name) {

         return Managers.getManager(IBeansManager.class).getBean(name);

     }

     @Override

     public Action getAction(String name) {

         return Managers.getManager(IBeansManager.class).getBean(name);

     }

     @Override

     public Resource getResource(String path) {

         return Ioc.getContainer().getApplicationContext().getResource(path);

     }

     @Override

     public InputStream getResourceAsStream(String path) {

         InputStream stream = null;

         try {

             stream = getResource(path).getInputStream();

         } catch (IOException e) {

             Managers.getManager(ILoggingManager.class).getLogger(getClass()).error("Unable to load stream for {}", path);

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

         }

         return stream;

     }

     /* Private utility methods */

     /**

      * Indicate if an image is not cached.

      *

      * @param index The index of the image.

      * @return true if the image is not cached else false.

      */

     private boolean isImageNotCached(String index) {

         return cache.get(index) == null;

     }

     /**

      * Load the image and put it in cache.

      *

      * @param path The path to the image.

      */

     private void loadImageInCache(String path) {

         BufferedImage image = getCompatibleImage(path);

         cache.put(path, new JThequeImage(image));

     }

     /**

      * Read the image and make it compatible with the environment.

      *

      * @param path The path to the image.

      * @return The compatible image.

      */

     private BufferedImage getCompatibleImage(String path) {

         return ImageUtils.openCompatibleImage(getResourceAsStream(path));

     }

     /**

      * Return a thumbnail of the image.

      *

      * @param image The image to make the thumbnail from.

      * @param width The width of the thumbnail.

      * @return The thumbnail of the image, with the specified width.

      */

     private static BufferedImage getThumbnail(BufferedImage image, int width) {

         return image == null ? null : ImageUtils.createThumbnail(image, width);

     }

 }