UserContents.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2020 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.user.content;
 
import java.util.Collections;
import java.util.Set;
import java.util.TreeSet;
import org.turro.string.Strings;
import org.turro.elephant.context.Application;
import org.turro.elephant.context.IConstructor;
import org.turro.marker.ElephantMarker;
import org.turro.plugin.contacts.IContact;
import org.turro.reflection.ClassNames;
import org.turro.reflection.Reflections;
 
public class UserContents {
  
  private static final String USER_CONTENT_CONTEXT = "elusrctx_";
 
  public static String parseContents(IConstructor constructor) {
    ElephantMarker marker = new ElephantMarker(constructor);
    return marker.parse("widgets/user", "userContent");
  }
 
  public static Set<IElephantUserContent> getContents(IConstructor constructor, IContact contact) {
    return getContents(constructor, contact, false);
  }
  
  public static Set<IElephantUserContent> getContents(IConstructor constructor, IContact contact, boolean fresh) {
    if(contact == null || !contact.isValid()) return Collections.EMPTY_SET;
    Set<IElephantUserContent> set = (Set<IElephantUserContent>) constructor.getSessionAttribute(USER_CONTENT_CONTEXT + contact.getId());
    if(fresh || (set == null)) {
      set = loadContents(contact);
      constructor.setSessionAttribute(USER_CONTENT_CONTEXT + contact.getId(), set);
    }
    return set;
  }
  
  public static Set<String> getTags(IConstructor constructor, IContact contact) {
    Set<String> set = new TreeSet<>();
    for(IElephantUserContent euc : getContents(constructor, contact)) {
      if(!Strings.isBlank(euc.render(constructor))) {
        set.addAll(euc.getTags());
      }
    }
    return set;
  }
  
  public static void reset() {
    reset(Application.getApplication().getConstructor(), (IContact) Application.getUser());
  }
  
  public static void reset(IConstructor constructor, IContact contact) {
    for(IElephantUserContent euc : getContents(constructor, contact)) {
      if(euc instanceof AbstractUserContent) {
        ((AbstractUserContent) euc).reset();
      }
    }
  }
  
  private static Set<IElephantUserContent> loadContents(IContact contact) {
    Set<IElephantUserContent> set = new TreeSet<>();
    for(String className : ClassNames.cached().byAnnotation(ElephantUserContent.class.getName())) {
      IElephantUserContent instance = (IElephantUserContent) Reflections.of(className)
              .is(IElephantUserContent.class)
              .cast(className)
              .classes(IContact.class)
              .objects(contact)
              .instance();
      if(instance != null) {
        set.add(instance);
      }
    }
    return set;
  }
 
  private UserContents() {
  }
 
}