SendAttachments.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2013 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.mail.recipients;
 
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.function.Consumer;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.turro.string.Strings;
import org.apache.commons.mail.EmailException;
import org.turro.action.Contacts;
import org.turro.action.MailAttachment;
import org.turro.action.MailSenders;
import org.turro.command.Command;
import org.turro.command.Context;
import org.turro.elephant.context.ElephantContext;
import org.turro.elephant.security.IUser;
import org.turro.elephant.util.Messages;
import org.turro.i18n.I_;
import org.turro.log.SystemLogType;
import org.turro.log.SystemLogger;
import org.turro.plugin.contacts.IContact;
import org.turro.util.PhraseBuilder;
 
public abstract class SendAttachments {
 
  private final ArrayList<MailAttachment> attachments = new ArrayList<>();
  
  private final String title;
 
  public SendAttachments(String title) {
    this.title = title;
  }
  
  public void addAttachment(Object entity, String path, String name) {
    attachments.add(new MailAttachment(path, name, entity));
  }
  
  public void sendAttachments(Collection<IContact> contacts) throws IOException {
    if(attachments.isEmpty()) {
      return;
    }
    IMailRecipients.selectRecipients(contacts, new Command() {
      @Override
      public Object execute(Context context) {
        IMailRecipients mr = (IMailRecipients) context.get("component");
        Collection<IContact> contacts = mr.getRecipients();
        if(contacts != null) {
          String mailString = getMailString(contacts);
          if(!Strings.isBlank(mailString)) {
            for(MailAttachment ma : attachments) {
              try {
                ma.attachment = File.createTempFile("attach_", "_mail");
                fillAttachment(ma.attachment, ma.entity);
              } catch (IOException ex) {
                Logger.getLogger(SendAttachments.class.getName()).log(Level.SEVERE, ElephantContext.logMsg(mailString), ex);
              }
            }
            sendAttachments(contacts, attachments, IMailRecipients.getComment(), mailString, (m) -> {
              for(MailAttachment ma : attachments) {
                ma.attachment.delete();
                SystemLogger.getInstance().doLog(SystemLogType.LOG_INFO, ma.path, "sent", mailString);
              }
            });
          }
        }
        return null;
      }
    });
  }
  
  protected abstract void fillAttachment(File attachment, Object entity);
 
  private String getMailString(Collection<IContact> iParticipantsEmail) {
    PhraseBuilder pb = new PhraseBuilder();
    for(IContact c : iParticipantsEmail) {
      String email = c.getConnector(IUser.CONNECTOR_EMAIL);
      if(Contacts.isValidEmail(email)) {
        pb.addWord(c.getName() + ": " + email);
        pb.addPendingSeparator(",");
      }
    }
    return pb.toString();
  }
 
  private void sendAttachments(Collection<IContact> contacts, ArrayList<MailAttachment> attachments, 
          String comment, String mailString, Consumer command) {
    try {
      MailSenders.getPool()
              .addContacts(contacts)
              .addMailAttachments(attachments)
              .onFinish(command)
              .setRoot("/attachments")
              .put("comment", comment)
              .put("mas", attachments)
              .sendTemplate("send", ElephantContext.getSiteName() + ": " + title);
      Messages.info(I_.get("Send documents")).add(I_.get("Sent")).paragraph().add(mailString.replaceAll("\\,", "\n")).show();
    } catch (EmailException ex) {
      Logger.getLogger(SendAttachments.class.getName()).log(Level.SEVERE, null, ex);
    }
  }
 
}