From 5f3e74559144da2b659773a29f73211e2347dd16 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Mon, 25 Dec 2017 11:44:32 +0300
Subject: email notifications

---
 .../src/main/java/com/juick/api/EmailManager.java  | 56 ++++++++++++++++++++++
 .../main/java/com/juick/service/EmailService.java  |  3 ++
 .../java/com/juick/service/EmailServiceImpl.java   |  7 +++
 3 files changed, 66 insertions(+)
 create mode 100644 juick-api/src/main/java/com/juick/api/EmailManager.java

diff --git a/juick-api/src/main/java/com/juick/api/EmailManager.java b/juick-api/src/main/java/com/juick/api/EmailManager.java
new file mode 100644
index 00000000..8e868ca0
--- /dev/null
+++ b/juick-api/src/main/java/com/juick/api/EmailManager.java
@@ -0,0 +1,56 @@
+package com.juick.api;
+
+import com.juick.Message;
+import com.juick.server.component.MessageEvent;
+import com.juick.server.util.HttpBadRequestException;
+import com.juick.service.EmailService;
+import com.juick.service.SubscriptionService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.context.ApplicationListener;
+import org.springframework.stereotype.Component;
+
+import javax.inject.Inject;
+import javax.mail.MessagingException;
+import javax.mail.Session;
+import javax.mail.Transport;
+import javax.mail.internet.InternetAddress;
+import javax.mail.internet.MimeMessage;
+
+import static com.juick.formatters.PlainTextFormatter.formatPost;
+
+@Component
+public class EmailManager implements ApplicationListener<MessageEvent> {
+    private static final Logger logger = LoggerFactory.getLogger(EmailManager.class);
+    @Inject
+    EmailService emailService;
+    @Inject
+    SubscriptionService subscriptionService;
+    @Override
+    public void onApplicationEvent(MessageEvent event) {
+        Message msg = event.getMessage();
+        if (msg.getRid() == 0) {
+            subscriptionService.getSubscribedUsers(msg.getUser().getUid(), msg.getMid())
+                    .forEach(user -> emailService.getEmails(user.getUid())
+                            .forEach(email -> emailNotify(email, msg)));
+        } else {
+            subscriptionService.getUsersSubscribedToComments(msg.getMid(), msg.getUser().getUid())
+                    .forEach(user -> emailService.getEmails(user.getUid())
+                        .forEach(email -> emailNotify(email, msg)));
+        }
+    }
+
+    void emailNotify(String email, Message msg) {
+        Session session = Session.getDefaultInstance(System.getProperties());
+        try {
+            MimeMessage message = new MimeMessage(session);
+            message.setFrom(new InternetAddress("noreply@mail.juick.com"));
+            message.addRecipient(javax.mail.Message.RecipientType.TO, new InternetAddress(email));
+            message.setSubject(String.format("New message from %s", msg.getUser().getName()));
+            message.setText(formatPost(msg));
+            Transport.send(message);
+        } catch (MessagingException ex) {
+            logger.error("mail exception", ex);
+        }
+    }
+}
diff --git a/juick-server-core/src/main/java/com/juick/service/EmailService.java b/juick-server-core/src/main/java/com/juick/service/EmailService.java
index 704ba2f7..ec43dcad 100644
--- a/juick-server-core/src/main/java/com/juick/service/EmailService.java
+++ b/juick-server-core/src/main/java/com/juick/service/EmailService.java
@@ -17,6 +17,8 @@
 
 package com.juick.service;
 
+import java.util.List;
+
 /**
  * Created by vitalyster on 09.12.2016.
  */
@@ -25,4 +27,5 @@ public interface EmailService {
     boolean addVerificationCode(Integer userId, String account, String code);
     boolean deleteEmail(Integer userId, String account);
     boolean setSubscriptionHour(Integer userId, String account, String hour);
+    List<String> getEmails(Integer userId);
 }
diff --git a/juick-server-jdbc/src/main/java/com/juick/service/EmailServiceImpl.java b/juick-server-jdbc/src/main/java/com/juick/service/EmailServiceImpl.java
index 57aa59f7..d9e35a00 100644
--- a/juick-server-jdbc/src/main/java/com/juick/service/EmailServiceImpl.java
+++ b/juick-server-jdbc/src/main/java/com/juick/service/EmailServiceImpl.java
@@ -25,6 +25,7 @@ import org.springframework.stereotype.Repository;
 import org.springframework.transaction.annotation.Transactional;
 
 import javax.inject.Inject;
+import java.util.List;
 
 /**
  * Created by vitalyster on 09.12.2016.
@@ -72,4 +73,10 @@ public class EmailServiceImpl extends BaseJdbcService implements EmailService {
         return StringUtils.isNotEmpty(account) && getJdbcTemplate().update(
                 "UPDATE emails SET subscr_hour=? WHERE user_id=? AND email=?", hour, userId, account) > 0;
     }
+
+    @Transactional(readOnly = true)
+    @Override
+    public List<String> getEmails(Integer userId) {
+        return getJdbcTemplate().queryForList("SELECT email FROM emails WHERE user_id=?", String.class, userId);
+    }
 }
-- 
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