StudentsReport.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.admin;
 
import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.function.BiConsumer;
import org.turro.action.IMailSender;
import org.turro.action.MailSenders;
import org.turro.auth.Authentication;
import org.turro.collections.CumulativeList;
import org.turro.contacts.BusinessRelation;
import org.turro.contacts.ContactType;
import org.turro.contacts.db.ContactsPU;
import org.turro.elephant.context.ElephantContext;
import org.turro.exporter.FieldsExporter;
import org.turro.i18n.I_;
import org.turro.log.WebLoggers;
import org.turro.message.MessageQueue;
import org.turro.plugin.contacts.IContact;
import org.turro.sql.SqlClause;
 
public class StudentsReport implements IAdminReport {
 
  @Override
  public boolean isInRole() {
    return Authentication.isAdministrator();
  }
 
  @Override
  public String getDescription() {
    return "Students by center";
  }
 
  @Override
  public void generate() {
    IContact contact = Authentication.getIContact();
    MailSenders.getHeavy()
            .addContact(contact)
            .onStart(s -> MessageQueue.pushMessage(contact, I_.get("Report will be sent by email")))
            .onCancel(s -> MessageQueue.pushMessage(contact, I_.get("Task already running")))
            .onBuild(s -> studentsToCSV((IMailSender) s))
            .send(I_.get(getDescription()), I_.get(getDescription()));
  }
 
  private void studentsToCSV(IMailSender sender) {
    try {
      sender.onFinish(x -> sender.removeAttachments());
      File result = File.createTempFile("report", "_Students.csv");
      FieldsExporter.of(getEntries()).export(result);
      sender.addAttachment(result);
      sender.onFinish(x -> sender.removeAttachments());
    } catch (IOException ex) {
      WebLoggers.severe(this).exception(ex).log();
    }
  }
  
  private List<StudentsEntry> getEntries() {
    BiConsumer<StudentsEntry, BusinessRelation> consumer = (e, p) -> {
      e.name = p.getContact().getName();
      e.position = p.getFormattedDescription();
      e.center = p.getBusiness().getName();
    };
    return CumulativeList.of(StudentsEntry.class)
            .forEach(SqlClause.select("br").from("BusinessRelation br")
                    .where().equal("br.business.type", ContactType.CONTACT_LEARNINGCENTER)
                    .dao(new ContactsPU())
                    .resultList(BusinessRelation.class),
                    consumer).get();
  }
  
}