ContentProviders.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2018 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
package org.turro.action.content;
 
import java.util.ArrayList;
import java.util.List;
import org.turro.annotation.ContentProvider;
import org.turro.plugin.contacts.IContact;
import org.turro.reflection.Instances;
 
public class ContentProviders {
 
  /* External Providers */
  
  public static List<IContentProvider> getProviders() {
    return Instances.cached().byAnnotation(ContentProvider.class, IContentProvider.class);
  }
  
  public static List<String> getHelpCommands() {
    List<String> commands = new ArrayList<>();
    for(IContentProvider provider : getProviders()) {
      commands.addAll(provider.getHelpCommands());
    }
    return commands;
  }
  
  public static ContentRenderer loadCommand(String command, IContact contact, String idContext) {
    for(IContentProvider provider : getProviders()) {
      if(provider.itsMe(command)) {
        return provider.loadCommand(command, contact, idContext);
      }
    }
    return null;
  }
  
  public static String executeCommand(String command, IContact contact, String idContext) {
    ContentRenderer executor = loadCommand(command, contact, idContext);
    return executor != null ? executor.execute() : null;
  }
  
  private ContentProviders() {
  }
 
}