AbstractSendable.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.sendable;
 
import java.util.Collection;
import java.util.Date;
import org.turro.string.Strings;
import org.turro.action.IAgreements;
import org.turro.action.IElephantSendable;
import org.turro.action.Plugins;
import org.turro.assistant.AssistantSet;
import org.turro.elephant.context.IConstructor;
import org.turro.elephant.db.ElephantPU;
import org.turro.elephant.entities.db.Sendable;
import org.turro.elephant.entities.db.SendableAssistant;
import org.turro.entities.Entities;
import org.turro.jpa.Dao;
import org.turro.plugin.contacts.IContact;
 
public abstract class AbstractSendable<T> implements IElephantSendable {
  
  private Sendable sendable;
  private T entity;
 
  public AbstractSendable(T entity) {
    this.entity = entity;
    assignByEntity(entity);
  }
 
  public AbstractSendable(String entityPath) {
    assignByPath(entityPath);
  }
 
  @Override
  public Date getSchedule() {
    return sendable.getSchedule();
  }
 
  @Override
  public boolean isSent() {
    return sendable.isSent();
  }
 
  @Override
  public AssistantSet getAssistants() {
    AssistantSet as = new AssistantSet();
    addAssistants(as, entity);
    IAgreements agreements = Plugins.loadImplementation(IAgreements.class, "agreements");
    for(SendableAssistant sa : Sendables.getAssistants(sendable.getEntityPath(), false)) {
      agreements.setContact(sa.getIContact());
      if(!agreements.declinedNotifications()) {
        as.addContact(sa.getIContact(), sendable);
      }
    }
    return as;
  }
 
  @Override
  public void send(IConstructor constructor) {
    try {
      doSend(sendable, getEntity(), constructor, getAssistants(), true);
    } finally {
      sendable.setSent(true);
      getDao().saveObject(sendable);
    }    
  }
 
  @Override
  public void send(IConstructor constructor, Collection<IContact> contacts) {
    AssistantSet assistants = new AssistantSet();
    assistants.addContacts(contacts);
    if(!assistants.isEmpty()) doSend(sendable, getEntity(), constructor, assistants, false);
  }
 
  protected abstract boolean doSend(Sendable sendable, T entity, IConstructor constructor, AssistantSet assistants, boolean checkSent);
  protected abstract void addAssistants(AssistantSet as, T entity);
  
  private Sendable assignByEntity(Object entity) {
    return assignByPath(Entities.getController(entity).getPath());
  }
  
  private Sendable assignByPath(String entityPath) {
    if(!Strings.isBlank(entityPath)) {
      sendable = (Sendable) getDao()
              .getSingleResultOrNull("select s from Sendable s where s.entityPath = ?", 
                      new Object[] { entityPath });
    } else {
      sendable = null;
    }
    if(sendable == null) {
      sendable = new Sendable();
      sendable.setEntityPath(entityPath);
    }
    return sendable;
  }
  
  private T getEntity() {
    if(entity == null) {
      entity = (T) Entities.getController(sendable.getEntityPath()).getEntity();
    }
    return (T) entity;
  }
 
  /* Dao */
  
  private Dao _dao;
  
  private Dao getDao() {
    if(_dao == null) {
      _dao = new ElephantPU();
    }
    return _dao;
  }
 
}