1 files changed, 143 insertions, 0 deletions
diff --git a/juick-server/src/main/java/com/juick/api/MessengerManager.java b/juick-server/src/main/java/com/juick/api/MessengerManager.java
new file mode 100644
index 00000000..7341b946
--- /dev/null
+++ b/juick-server/src/main/java/com/juick/api/MessengerManager.java
@@ -0,0 +1,143 @@
+package com.juick.api;
+
+import com.github.messenger4j.Messenger;
+import com.github.messenger4j.exception.MessengerApiException;
+import com.github.messenger4j.exception.MessengerIOException;
+import com.github.messenger4j.exception.MessengerVerificationException;
+import com.github.messenger4j.send.MessagePayload;
+import com.github.messenger4j.send.message.TemplateMessage;
+import com.github.messenger4j.send.message.TextMessage;
+import com.github.messenger4j.send.message.template.ButtonTemplate;
+import com.github.messenger4j.send.message.template.button.UrlButton;
+import com.github.messenger4j.userprofile.UserProfile;
+import com.github.messenger4j.webhook.event.TextMessageEvent;
+import com.juick.Message;
+import com.juick.User;
+import com.juick.server.component.MessageEvent;
+import com.juick.service.MessagesService;
+import com.juick.service.MessengerService;
+import com.juick.service.SubscriptionService;
+import com.juick.service.UserService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.ApplicationListener;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+
+import javax.annotation.Nonnull;
+import javax.annotation.PostConstruct;
+import javax.inject.Inject;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.time.Instant;
+import java.util.Collections;
+import java.util.Optional;
+
+import static com.juick.formatters.PlainTextFormatter.formatPost;
+import static com.juick.formatters.PlainTextFormatter.formatUrl;
+
+@Component
+public class MessengerManager implements ApplicationListener<MessageEvent> {
+    private static final Logger logger = LoggerFactory.getLogger(MessengerManager.class);
+    @Inject
+    private MessagesService messagesService;
+    @Inject
+    private SubscriptionService subscriptionService;
+    @Inject
+    private UserService userService;
+    @Inject
+    private MessengerService messengerService;
+    @Inject
+    private ApiServer apiServer;
+
+    @Value("${fb_page_access_token:12345678}")
+    private String facebookPageAccessToken;
+    @Value("${fb_verify_token:12345678}")
+    private String facebookVerifyToken;
+    @Value("${fb_secret:12345678}")
+    private String facebookSecret;
+
+    private Messenger messenger;
+
+    @PostConstruct
+    public void init() {
+        messenger = Messenger.create(facebookPageAccessToken, facebookSecret, facebookVerifyToken);
+    }
+
+    public String getFacebookVerifyToken() {
+        return facebookVerifyToken;
+    }
+
+    public void processUpdate(String signature , String data) throws MessengerVerificationException {
+        messenger.onReceiveEvents(data, Optional.of(signature), event -> {
+            final String senderId = event.senderId();
+            final Instant timestamp = event.timestamp();
+
+            User user_from = userService.getUserByUID(messengerService.getUserId(senderId)).orElse(new User());
+            logger.info("Found juick user {}", user_from.getUid());
+            if (user_from.getUid() == 0) {
+                try {
+                    UserProfile profile = messenger.queryUserProfile(senderId);
+                    signupNotify(senderId, messengerService.getSignUpHash(senderId, profile.firstName()));
+                } catch (MessengerApiException | MessengerIOException | MalformedURLException e) {
+                    logger.warn("messenger profile error", e);
+                    try {
+                        signupNotify(senderId, messengerService.getSignUpHash(senderId, "anonymous"));
+                    } catch (MalformedURLException | MessengerApiException | MessengerIOException e1) {
+                        logger.warn("signup error", e1);
+                    }
+                }
+            } else {
+                if (event.isTextMessageEvent()) {
+                    final TextMessageEvent textMessageEvent = event.asTextMessageEvent();
+                    final String messageId = textMessageEvent.messageId();
+                    final String text = textMessageEvent.text();
+                    logger.info("Received text message from '{}' at '{}' with content: {} (mid: {})",
+                            senderId, timestamp, text, messageId);
+                    apiServer.processMessage(user_from, text, null);
+                    messengerNotify(senderId, "Message sent", null);
+                }
+            }
+        });
+    }
+
+    @Override
+    public void onApplicationEvent(@Nonnull MessageEvent event) {
+        Message msg = event.getMessage();
+        if (msg.getMid() > 0 && msg.getRid() == 0) {
+            String subject = formatPost(msg);
+            subscriptionService.getSubscribedUsers(msg.getUser().getUid(), msg.getMid())
+                    .forEach(user -> messengerService.getSenderId(user)
+                            .ifPresent(t -> messengerNotify(t, subject, formatUrl(msg))));
+        } else if (msg.getRid() > 0) {
+            // get quote
+            com.juick.Message jmsg = messagesService.getReply(msg.getMid(), msg.getRid());
+            String subject = formatPost(jmsg);
+            subscriptionService.getUsersSubscribedToComments(msg.getMid(), msg.getUser().getUid())
+                    .forEach(user -> messengerService.getSenderId(user)
+                            .ifPresent(t -> messengerNotify(t, subject, formatUrl(jmsg))));
+        }
+    }
+
+    private void messengerNotify(String messengerUser, String text, String url) {
+        try {
+            if (!StringUtils.isEmpty(url)) {
+                final UrlButton showMessage = UrlButton.create("VIEW MESSAGE", new URL(url));
+                ButtonTemplate template = ButtonTemplate.create(text, Collections.singletonList(showMessage));
+                messenger.send(MessagePayload.create(messengerUser, TemplateMessage.create(template)));
+            } else {
+                messenger.send(MessagePayload.create(messengerUser, TextMessage.create(text)));
+            }
+        } catch (MessengerApiException | MessengerIOException | MalformedURLException e) {
+            logger.warn("messenger error", e);
+        }
+    }
+    private void signupNotify(String messengerUser, String hash) throws MalformedURLException, MessengerApiException, MessengerIOException {
+        final UrlButton urlButton = UrlButton.create("LOGIN",
+                new URL("https://juick.com/signup?type=messenger&hash=" + hash));
+        ButtonTemplate template = ButtonTemplate.create("Login to receive notifications",
+                Collections.singletonList(urlButton));
+        messenger.send(MessagePayload.create(messengerUser, TemplateMessage.create(template)));
+    }
+}