com.openlattice.mail.services.MailRenderer.java Source code

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Here is the source code for com.openlattice.mail.services.MailRenderer.java

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/*
 * Copyright (C) 2018. OpenLattice, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * You can contact the owner of the copyright at support@openlattice.com
 *
 */

package com.openlattice.mail.services;

import com.openlattice.mail.RenderableEmailRequest;
import com.openlattice.mail.exceptions.InvalidTemplateException;
import com.openlattice.mail.templates.EmailTemplate;
import com.openlattice.mail.utils.TemplateUtils;
import java.io.IOException;
import java.util.Arrays;
import java.util.Set;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import com.google.common.collect.Sets;

import jodd.mail.Email;
import jodd.mail.EmailAttachment;
import jodd.mail.att.ByteArrayAttachment;

public class MailRenderer {
    private Logger logger = LoggerFactory.getLogger(MailRenderer.class);

    // TODO: Move to Dynamic Blacklist
    private static final Set<String> REGISTRATION_DOMAIN_BLACKLIST = Sets.newHashSet("someblacklisteddomain.com");

    @VisibleForTesting
    public static boolean isNotBlacklisted(String to) {
        return !REGISTRATION_DOMAIN_BLACKLIST.stream().anyMatch((domain) -> to.contains(domain));
    }

    protected Set<Email> renderEmail(RenderableEmailRequest emailRequest) {
        Iterable<String> toAddresses = Iterables.filter(Arrays.asList(emailRequest.getTo()),
                (String address) -> isNotBlacklisted(address));
        logger.info("filtered e-mail addresses that are blacklisted.");

        if (Iterables.size(toAddresses) < 1) {
            logger.error("Must include at least one valid e-mail address.");
            return ImmutableSet.of();
        }
        String template;
        try {
            template = TemplateUtils.loadTemplate(emailRequest.getTemplatePath());
        } catch (IOException e) {
            throw new InvalidTemplateException("Invalid Email Template: " + emailRequest.getTemplatePath(), e);
        }
        String templateHtml = TemplateUtils.DEFAULT_TEMPLATE_COMPILER.compile(template)
                .execute(emailRequest.getTemplateObjs().or(new Object()));

        /*
         * when someone invites multiple people, we want to spool an individual invite for each person. as such, we need
         * to create a multiple Email objects instead of one Email object with multiple "To" fields to avoid having
         * multiple emails appear in the "To" field in an email client like Gmail.
         */
        Set<Email> emailSet = Sets.newHashSet();
        for (String toAddress : toAddresses) {

            Email email = Email.create().from(emailRequest.getFrom().or(EmailTemplate.getCourierEmailAddress()))
                    .to(toAddress).subject(emailRequest.getSubject().or("")).addHtml(templateHtml);
            if (emailRequest.getByteArrayAttachment().isPresent()) {
                ByteArrayAttachment[] attachments = emailRequest.getByteArrayAttachment().get();
                for (int i = 0; i < attachments.length; i++) {
                    email.attach(attachments[i]);
                }
            }

            if (emailRequest.getAttachmentPaths().isPresent()) {
                String[] paths = emailRequest.getAttachmentPaths().get();
                for (int i = 0; i < paths.length; i++) {
                    email.attach(EmailAttachment.attachment().file(paths[i]));
                }
            }

            emailSet.add(email);
        }
        return emailSet;
    }

}