NewsletterTemplate.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.newsletter;
 
import java.io.Closeable;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.amic.util.date.CheckDate;
import org.amic.util.date.DateFormats;
import org.apache.commons.mail.EmailException;
import org.turro.elephant.context.Application;
import org.turro.elephant.context.ElephantContext;
import org.turro.mail.message.MailMessageTemplate;
import org.turro.mail.pool.MailMessagePool;
import org.turro.mail.provider.MailProviders;
import org.turro.marker.ElephantMarker;
import org.turro.plugin.contacts.IContact;
import org.turro.publication.entity.NewsSection;
import org.turro.publication.entity.Newsletter;
 
public class NewsletterTemplate implements Closeable {
 
  private final Newsletter newsletter;
  private File template;
 
  public NewsletterTemplate(Newsletter newsletter) {
    this.newsletter = newsletter;
    newsletter.resetSections();
  }
 
  public MailMessageTemplate getMailMessage(MailMessagePool pool, IContact contact) {
    try {
      if(pool == null) pool = MailProviders.instance().getGeneric();
      MailMessageTemplate mmt = MailMessageTemplate.of(pool.getProvider());
      mmt.setProcessLiveLinks(true);
      mmt.setSubject(getTitle());
      mmt.addTo(contact.getEmail(), contact.getName());
      ElephantMarker em = new ElephantMarker(Application.getApplication().getConstructor(), true);
      em.put("newsletter", newsletter);
      for(NewsSection ns : newsletter.getNewsSections()) {
        em.put("newsSection" + ns.getNewsOrder(), ns);
      }
      em.put("contact", contact);
      em.put("email", contact.getEmail());
      mmt.setRoot("/newsletter/tmp");
      mmt.setMessage(em, getTemplate(contact), contact);
      return mmt;
    } catch (EmailException ex) {
      Logger.getLogger(NewsletterTemplate.class.getName()).log(Level.SEVERE, ElephantContext.logMsg(null), ex);
      return null;
    }
  }
  
  public String getTemplate(IContact contact) {
    try {
      if(template == null) {
        File rootTmp = new File(ElephantContext.getRealPath("/WEB-INF/elephant/templates-mail/content/newsletter/tmp"));
        rootTmp.mkdirs();
        template = File.createTempFile("news", "Template.html", rootTmp);
        try (PrintWriter fw = new PrintWriter(template, ElephantContext.getEncoding())) {
          newsletter.generateNewsletter(contact, fw);
        }
      }
      return extractName(template);
    } catch (IOException ex) {
      Logger.getLogger(NewsletterTemplate.class.getName()).log(Level.SEVERE, ElephantContext.logMsg(null), ex);
      return null;
    }
  }
 
  public void releaseTemplate() {
    if(template != null) {
      template.delete();
    }
  }
  
  private String extractName(File file) {
    String name = file.getName();
    return name.substring(0, name.length() - "Template.html".length());
  }
 
  private String getTitle() {
    String title = newsletter.getTitle();
    if(title.contains("{date}")) {
      title = title.replaceAll("\\{date\\}", DateFormats.format(new Date(), "SHORT", Application.getUsedLocale()));
    } 
    if(title.contains("{datetime}")) {
      title = title.replaceAll("\\{datetime\\}", DateFormats.format(new Date(), "SHORT", "SHORT", Application.getUsedLocale()));
    } 
    if(title.contains("{month}")) {
      title = title.replaceAll("\\{month\\}", new CheckDate().formatDate("MMMM"));
    } 
    if(title.contains("{year}")) {
      title = title.replaceAll("\\{year\\}", new CheckDate().formatDate("YYYY"));
    } 
    if(title.contains("{day}")) {
      title = title.replaceAll("\\{day\\}", new CheckDate().formatDate("dd"));
    } 
    if(title.contains("{week}")) {
      title = title.replaceAll("\\{week\\}", new CheckDate().formatDate("ww"));
    } 
    if(title.contains("{site}")) {
      title = title.replaceAll("\\{site\\}", ElephantContext.getSiteName());
    }
    return title;
  }
  
  @Override
  public void close() throws IOException {
    releaseTemplate();
  }
 
}