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/*
* Copyright 2017 ~ 2025 the original author or authors. James Wong James Wong
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.wl4g.infra.common.notification.email.internal;
import static com.wl4g.infra.common.collection.CollectionUtils2.safeList;
import static com.wl4g.infra.common.lang.Assert2.hasTextOf;
import static com.wl4g.infra.common.lang.Assert2.notEmptyOf;
import static com.wl4g.infra.common.lang.Assert2.notNullOf;
import static java.lang.String.format;
import static java.util.Objects.isNull;
import static java.util.stream.Collectors.toList;
import static org.apache.commons.lang3.StringUtils.isBlank;
import java.util.Date;
import java.util.Properties;
import javax.annotation.Nullable;
import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import javax.validation.constraints.NotNull;
import com.wl4g.infra.common.notification.GenericNotifierParam;
import com.wl4g.infra.common.notification.email.EmailNotifierProperties;
/**
* {@link EmailSenderAPI}
*
* @author James Wong
* @version 2023-01-09
* @since v3.0.0
*/
public class EmailSenderAPI {
public static JavaMailSender buildSender(final @NotNull EmailNotifierProperties config) {
notNullOf(config, "config");
JavaMailSenderImpl mailSender = new JavaMailSenderImpl();
if (!isNull(config.getProperties())) {
final Properties settings = new Properties(DEFAULT_PROPERTIES);
settings.putAll(config.getProperties());
mailSender.setJavaMailProperties(settings);
}
mailSender.setDefaultEncoding(config.getDefaultEncoding());
mailSender.setProtocol(config.getProtocol());
mailSender.setHost(config.getHost());
mailSender.setPort(config.getPort());
mailSender.setUsername(config.getUsername());
mailSender.setPassword(config.getPassword());
return mailSender;
}
public static Object send(
final @NotNull JavaMailSender sender,
final @NotNull EmailNotifierProperties config,
final @NotNull GenericNotifierParam msg) {
return send(sender, config, msg, null);
}
public static Object send(
final @NotNull JavaMailSender sender,
final @NotNull EmailNotifierProperties config,
final @NotNull GenericNotifierParam msg,
final @Nullable String message) {
notNullOf(sender, "sender");
notNullOf(config, "config");
notNullOf(msg, "msg");
final String mailMsgType = msg.getParameterAsString(KEY_MAIL_TYPE, VALUE_MAIL_SIMPLE);
hasTextOf(mailMsgType, "mailMsgType");
hasTextOf(config.getUsername(), "fromUser");
final String fromUser = config.getUsername() + "<" + config.getUsername() + ">";
final String subject = msg.getParameterAsString(KEY_MAIL_SUBJECT, "Unnamed Mail");
final Date sentDate = msg.getParameter(KEY_MAIL_SENDDATE, new Date());
final String[] toObjects = msg.getToObjects()
.stream()
.map(to -> to = to + "<" + to + ">")
.collect(toList())
.toArray(new String[] {});
notEmptyOf(toObjects, "toObjects");
final String[] bcc = safeList(msg.getParameter(KEY_MAIL_BCC)).toArray(new String[] {});
final String[] cc = safeList(msg.getParameter(KEY_MAIL_CC)).toArray(new String[] {});
final String content = isBlank(message) ? config.resolveMessage(msg.getTemplateKey(), msg.getParameters()) : message;
final String replyTo = msg.getParameter(KEY_MAIL_REPLYTO);
Object sendMsg = null;
switch (mailMsgType) {
case VALUE_MAIL_SIMPLE:
final SimpleMailMessage simple = new SimpleMailMessage();
// Add "<>" symbol to send out?
/*
* Preset from account, otherwise it would be wrong: 501 mail from
* address must be same as authorization user.
*/
simple.setFrom(fromUser);
simple.setTo(toObjects);
simple.setSubject(subject);
simple.setSentDate(sentDate);
simple.setBcc(bcc);
simple.setCc(cc);
if (!isBlank(replyTo)) {
simple.setReplyTo(replyTo);
}
simple.setText(content);
sendMsg = simple;
sender.send(simple);
break;
case VALUE_MAIL_MIME:
try {
final MimeMessage mime = sender.createMimeMessage();
final MimeMessageHelper helper = new MimeMessageHelper(mime, "utf-8");
helper.setFrom(fromUser);
helper.setTo(toObjects);
helper.setSubject(subject);
helper.setSentDate(sentDate);
helper.setBcc(bcc);
helper.setCc(cc);
if (!isBlank(replyTo)) {
helper.setReplyTo(replyTo);
}
// Use this or below line
// mimeMessage.setContent(htmlMsg, "text/html");
// Use this or above line.
helper.setText(content);
sendMsg = helper;
sender.send(mime);
} catch (MessagingException e) {
throw new IllegalStateException(e);
}
break;
default:
throw new UnsupportedOperationException(format("No supported email message type of %s", mailMsgType));
}
return sendMsg;
}
/**
*
*/
public static final String KEY_MAIL_TYPE = "msgType";
public static final String VALUE_MAIL_SIMPLE = "SIMPLE";
public static final String VALUE_MAIL_MIME = "MIME";
public static final String KEY_MAIL_SUBJECT = "subject";
public static final String KEY_MAIL_SENDDATE = "sendDate";
public static final String KEY_MAIL_REPLYTO = "replyTo";
public static final String KEY_MAIL_CC = "cc";
public static final String KEY_MAIL_BCC = "bcc";
public static final Properties DEFAULT_PROPERTIES = new Properties() {
private static final long serialVersionUID = 1L;
{
put("mail.transport.portocol", "smtp");
put("mail.smtp.host", "smtp.exmail.qq.com");
put("mail.smtp.port", "465");
put("mail.smtp.auth", "true");
put("mail.smtp.timeout", "10000");
put("mail.smtp.ssl.enable", "true");
put("mail.imap.ssl.socketFactory.fallback", "false");
put("mail.imap.ssl.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
put("mail.smtp.starttls.enable", "true");
put("mail.smtp.starttls.required", "true");
put("mail.smtp.ssl.portocols", "TLSv1.2");
}
};
}
