ConvocationSender.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.zul.convocation;
 
import biweekly.ICalVersion;
import biweekly.ICalendar;
import biweekly.component.VEvent;
import biweekly.io.text.ICalWriter;
import biweekly.parameter.ParticipationStatus;
import biweekly.parameter.Role;
import biweekly.property.Classification;
import biweekly.property.Organizer;
import biweekly.property.Status;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.turro.string.Strings;
import org.apache.commons.mail.EmailException;
import org.turro.action.Contacts;
import org.turro.action.IAgreements;
import org.turro.action.Plugins;
import org.turro.action.queue.NotificationCategory;
import org.turro.action.queue.Notifications;
import org.turro.assistant.Assistant;
import org.turro.assistant.AssistantSet;
import org.turro.contacts.Attendee;
import org.turro.contacts.Connector;
import org.turro.contacts.Contact;
import org.turro.contacts.Convocation;
import org.turro.elephant.context.Application;
import org.turro.elephant.context.ElephantContext;
import org.turro.elephant.security.IUser;
import org.turro.log.SystemLogType;
import org.turro.log.SystemLogger;
import org.turro.mail.message.MailMessageTemplate;
import org.turro.mail.message.MailUtils;
import org.turro.mail.pool.MailMessagePool;
import org.turro.mail.provider.MailProviders;
import org.turro.mail.queue.GenericElephantNotification;
import org.turro.mail.queue.QueuedSender;
import org.turro.marker.ElephantMarker;
import org.turro.plugin.contacts.IContact;
import org.turro.www.convocation.ConvocationCtrl;
 
public class ConvocationSender extends QueuedSender {
 
  private final Convocation entity;
  private final AssistantSet assistants;
  private final IContact contact;
 
  public ConvocationSender(Convocation entity, IContact contact) {
    this.entity = entity;
    this.assistants = null;
    this.contact = contact;
  }
  
  public ConvocationSender(Convocation entity, AssistantSet assistants) {
    this.entity = entity;
    this.assistants = assistants;
    this.contact = null;
  }
  
  @Override
  protected void doSend() {
    final List<File> tmpFiles = new ArrayList<>();  
    MailMessagePool pool = MailProviders.instance().getGeneric(Application.getApplication().getConstructor());
    if(pool != null) {
      String organizerEmail = null;
      if(entity.getOrganizer() != null) {
        Connector c = entity.getOrganizer().getConnectorMap().get(IUser.CONNECTOR_EMAIL);
        if(c != null) {
          organizerEmail = c.getValue();
        }
      }
      if(contact != null) {
        createMail(new Assistant(contact, entity), tmpFiles, organizerEmail, pool);
      } else {
        IAgreements agreements = Plugins.loadImplementation(IAgreements.class, "agreements");
        NotificationCategory nc = Notifications.getCategory(GenericElephantNotification.GENERIC_NOTIFICATION);
        for(Assistant assistant : assistants) {
          agreements.setContact(assistant.contact);
          if(agreements.canSendEmails(nc)) {
            createMail(assistant, tmpFiles, organizerEmail, pool);
          }
        }
      }
      pool.sendPool((m) -> {
        for(File f : tmpFiles) {
          f.delete();
        }
      });
      SystemLogger.getInstance().doLog(SystemLogType.LOG_INFO, entity, "sent", organizerEmail);
    }
  }
 
  private void createMail(Assistant assistant, final List<File> tmpFiles, String organizerEmail, MailMessagePool pool) {
    try {
      if(Contacts.isValidEmail(assistant.email)) {
        File tmp = generateCalendar(assistant.contact, assistant.email);
        tmpFiles.add(tmp);
        MailMessageTemplate mmt = MailMessageTemplate.of(pool.getProvider());
        mmt.setSubject(entity.getName());
        if(checkWebDomain(organizerEmail)) {
          mmt.setFrom(organizerEmail, entity.getOrganizer().getName());
        }
        mmt.addTo(assistant.email, assistant.name);
        ElephantMarker em = new ElephantMarker(Application.getApplication().getConstructor(), true);
        em.put("convocation", entity);
        em.put("contact", assistant.contact);
        em.put("email", assistant.email);
        em.put("notifier", this);
        mmt.setMessage(em, "convocation", assistant.contact);
        mmt.attach(tmp.getAbsolutePath(), "invite.ics", "invite.ics");
        pool.addToPool(mmt);
      }
    } catch (EmailException ex) {
      Logger.getLogger(ConvocationSender.class.getName()).log(Level.SEVERE, ElephantContext.logMsg(null), ex);
    }
  }
 
  private File generateCalendar(IContact contact, String email) {
    try {
      ICalendar cal = new ICalendar();
      cal.setVersion(ICalVersion.V2_0);
      cal.setProductId(ElephantContext.getSiteName());
      cal.setMethod(biweekly.property.Method.request());
      VEvent event = new VEvent();
      event.setUid(entity.getId());
      event.setStatus(Status.confirmed());
      event.setClassification(Classification.public_());
      event.setSummary(entity.getName());
      event.setDateStart(entity.getCallDate());
      event.setDateEnd(entity.getEndDate());
      event.setDescription(MailUtils.processMacros(contact, entity.getPlainText()));
      if(!Strings.isBlank(entity.getLocation())) {
        event.setLocation(entity.getLocation());
      }
      Contact organizer = entity.getOrganizer();
      if(organizer != null) {
        Organizer o = new Organizer(organizer.getName(), organizer.getConnectorMap().get(IUser.CONNECTOR_EMAIL).getValue());
        event.setOrganizer(o);
      }
      if(contact != null && !Strings.isBlank(email)) {
        biweekly.property.Attendee at = new biweekly.property.Attendee(contact.getName(), email);
        at.setRole(Role.ATTENDEE);
        at.setParticipationStatus(ParticipationStatus.NEEDS_ACTION);
        at.setRsvp(Boolean.TRUE);
        event.addAttendee(at);
      }
      cal.addEvent(event);
      File tmp  = File.createTempFile("attach_", "_calendar.ics");
      try (ICalWriter writer = new ICalWriter(tmp, ICalVersion.V2_0)) {
        writer.write(cal);
      }
      //Biweekly.write(cal).go(tmp);
      return tmp;
    } catch (IOException ex) {
      Logger.getLogger(ConvocationSender.class.getName()).log(Level.SEVERE, ElephantContext.logMsg(null), ex);
    }
    return null;
  }
 
  private boolean checkWebDomain(String organizerEmail) {
    Pattern p = Pattern.compile(".*[^a-zA-Z0-9-]([a-zA-Z0-9-]+\\.[a-zA-Z0-9-]+)[^a-zA-Z0-9-]*");
    String domainServer = null, domainMail = null;
    String server = ElephantContext.getServerBase("http");
    Matcher m = p.matcher(server);
    if(m.find()) {
      domainServer = m.group(1);
    }
    m = p.matcher(organizerEmail);
    if(m.find()) {
      domainMail = m.group(1);
    }
    return !Strings.isBlank(domainServer) &&
           !Strings.isBlank(domainMail) &&
           domainServer.equals(domainMail);
  }
  
  public String createAttendantQrCode(IContact contact, Convocation convocation) {
    return ConvocationCtrl.createAttendantQrCodeURL(Application.getApplication().getConstructor(), contact, convocation);
  }
  
  public static AssistantSet getAsAssistants(Convocation convocation) {
    AssistantSet assistants = new AssistantSet();
    for(Attendee att : convocation.getAttendees()) {
      assistants.addContact(att.getIContact(), convocation);
    }
    return assistants;
  }
 
}