Interests.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2024 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.interest;
 
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.turro.participation.ParticipationReason;
import org.turro.plugin.contacts.IContact;
import org.turro.reflection.Instances;
import org.turro.util.Arrays;
 
public class Interests {
 
  public void collect(Set<InterestCategory> categories) {
    ParticipationReason[] normal = categories.stream()
            .filter(c -> !c.isReversed())
            .map(c -> c.getReason())
            .toArray(ParticipationReason[]::new);
    if(!Arrays.isEmpty(normal)) collect(normal);
    ParticipationReason[] reversed = categories.stream()
            .filter(c -> c.isReversed())
            .map(c -> c.getReason())
            .toArray(ParticipationReason[]::new);
    if(!Arrays.isEmpty(reversed)) reversed(normal);
  }
 
  public Set<Interest> collect(ParticipationReason... reasons) {
    for(InterestCollector collector : Instances.fresh().byInterface(InterestCollector.class, InterestCollector.class)) {
      interests.addAll(collector.collect(contact, reasons));
    }
    return interests;
  }
  
  public Set<Interest> reversed(ParticipationReason... reasons) {
    for(InterestCollector collector : Instances.fresh().byInterface(InterestCollector.class, InterestCollector.class)) {
      interests.addAll(collector.reversed(contact, reasons));
    }
    return interests;
  }
  
  public List<String> labels() {
    return interests.stream().map(i -> i.getLabel()).distinct().sorted().toList();
  }
  
  public Set<Interest> get() {
    return interests;
  }
  
  public void clear() {
    interests.clear();
  }
  
  public boolean isEmpty() {
    return interests.isEmpty();
  }
  
  /* Factory */
  
  public static Interests from(IContact contact) {
    return new Interests(contact);
  }
  
  private final IContact contact;
  private final Set<Interest> interests;
  
  private Interests(IContact contact) {
    this.contact = contact;
    this.interests = new HashSet<>();
  }
  
}