Activities.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2023 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.activity;
 
import java.util.ArrayList;
import java.util.Date;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
import org.turro.assistant.AssistantConstants;
import org.turro.assistant.AssistantSet;
import org.turro.assistant.Assistants;
import org.turro.elephant.db.ElephantPU;
import org.turro.elephant.entities.db.Activity;
import org.turro.elephant.entities.db.ActivityAssistant;
import org.turro.jpa.Dao;
import org.turro.reflection.Instances;
import org.turro.sql.SqlClause;
import org.turro.string.Strings;
import org.turro.util.Cached;
 
public class Activities {
  
  public Activity add(Date activityDate, String activityPath, String entityPath, String sortPath) {
    if(Strings.anyBlank(entityPath, activityPath, sortPath)) return null;
    Activity activity = new Activity();
    activity.setReason(reason);
    activity.setActivityDate(activityDate);
    activity.setActivityPath(activityPath);
    activity.setEntityPath(entityPath);
    activity.setSortPath(sortPath);
    entityPaths.add(entityPath);
    return dao.get().saveObject(activity);    
  }
  
  public Date lastDate() {
    return SqlClause.select("max(a.activityDate)").from("Activity a")
            .where().equal("reason", reason)
            .dao(dao.get())
            .singleResult(Date.class, defaultDate);
  }
  
  /* Process */
  
  public static void generate() {
    resetEntityPaths();
    for(IElephantActivity activity : Instances.cached().byAnnotation(ElephantActivity.class, IElephantActivity.class)) {
      activity.generate();
    }
    addParticipants();
  }
 
  /* Participants */
 
  private static final Set<String> entityPaths = new HashSet<>();
  
  public static void resetEntityPaths() {
    entityPaths.clear();
  }
  
  public static void addParticipants() {
    Dao dao = new ElephantPU();
    for(String entityPath : entityPaths) {
      updateEntityPath(dao, entityPath);
    }
    entityPaths.clear();
  }
  
  private static void updateEntityPath(Dao dao, String entityPath) {
    SqlClause.delete("ActivityAssistant")
            .where().equal("entityPath", entityPath)
            .dao(dao)
            .execute();
    List<ActivityAssistant> assistants = new ArrayList<>();
    for(String idContact : getParticipants(entityPath)) {
      ActivityAssistant aa = new ActivityAssistant();
      aa.setEntityPath(entityPath);
      aa.setContactId(idContact);
      assistants.add(aa);
    }
    dao.saveCollection(assistants);
  }
 
  public static Set<String> getParticipants(String entityPath) {
    AssistantSet participants = new AssistantSet();
    Assistants.addAssistants(entityPath, true, participants, AssistantConstants.all());
    return participants.stream().map(a -> a.contact.getId()).collect(Collectors.toSet());
  }
 
  /* Dao */
  
  private final Cached<Dao> dao = Cached.instance(() -> new ElephantPU());
 
  /* Factory */
  
  public static Activities of(String reason) {
    return new Activities(reason);
  }
  
  private final String reason;
  private static final Date defaultDate = new Date(0L); 
 
  public Activities(String reason) {
    this.reason = reason;
  }
  
}