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package com.juick.server;
import com.juick.Message;
import com.juick.User;
import com.juick.server.api.activity.model.Link;
import com.juick.server.api.activity.model.Note;
import com.juick.server.api.activity.model.Person;
import com.juick.server.api.activity.model.activities.Accept;
import com.juick.server.api.activity.model.activities.Create;
import com.juick.service.SocialService;
import com.juick.service.activities.ActivityListener;
import com.juick.service.activities.FollowEvent;
import com.juick.service.activities.UndoFollowEvent;
import com.juick.service.component.*;
import com.juick.util.MessageUtils;
import org.apache.commons.lang3.StringUtils;
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.web.util.UriComponentsBuilder;
import javax.annotation.Nonnull;
import javax.annotation.PostConstruct;
import javax.inject.Inject;
import java.io.IOException;
import java.net.URI;
import java.util.Collections;
@Component
public class ActivityPubManager implements ActivityListener, NotificationListener {
private static final Logger logger = LoggerFactory.getLogger(ActivityPubManager.class);
@Inject
SignatureManager signatureManager;
@Inject
ActivityPubManager activityPubManager;
@Inject
SocialService socialService;
@Value("${ap_base_uri:http://localhost:8080/}")
private String baseUri;
private UriComponentsBuilder uri;
@PostConstruct
public void init() {
uri = UriComponentsBuilder.fromUriString(baseUri);
}
@Override
public void processFollowEvent(@Nonnull FollowEvent followEvent) {
String acct = (String)followEvent.getRequest().getObject();
logger.info("received follower request to {}", acct);
User followedUser = socialService.getUserByAccountUri(acct);
if (!followedUser.isAnonymous()) {
// automatically accept follower requests
Person me = (Person) signatureManager.getContext(URI.create(acct));
Person follower = (Person) signatureManager.getContext(URI.create(followEvent.getRequest().getActor()));
Accept accept = new Accept();
accept.setActor(me.getId());
accept.setObject(followEvent.getRequest());
try {
signatureManager.post(me, follower, accept);
socialService.addFollower(followedUser, follower.getId());
logger.info("Follower added for {}", followedUser.getName());
} catch (IOException e) {
logger.info("activitypub exception", e);
}
}
}
@Override
public void undoFollowEvent(UndoFollowEvent event) {
String actor = event.getActor();
String me = (String)event.getFollowRequest().getObject();
logger.info("{} stopping to follow {}", actor, me);
User followedUser = socialService.getUserByAccountUri(me);
if (!followedUser.isAnonymous()) {
socialService.removeFollower(followedUser, actor);
}
}
@Override
public void processMessageEvent(MessageEvent messageEvent) {
Message msg = messageEvent.getMessage();
User user = msg.getUser();
String userUri = personUri(user);
Note note = makeNote(msg);
Person me = (Person) signatureManager.getContext(URI.create(userUri));
socialService.getFollowers(user).forEach(acct -> {
Person follower = (Person) signatureManager.getContext(URI.create(acct));
Create create = new Create();
create.setId(note.getId());
create.setActor(me.getId());
create.setPublished(note.getPublished());
create.setObject(note);
try {
logger.info("Posting to follower {}", follower.getId());
signatureManager.post(me, follower, create);
} catch (IOException e) {
logger.warn("activitypub exception", e);
}
});
}
public String inboxUri() {
return uri.replacePath("/api/inbox").toUriString();
}
public String outboxUri(User user) {
return uri.replacePath(String.format("/u/%s/blog/toc", user.getName())).toUriString();
}
public String personUri(User user) {
return uri.replacePath(String.format("/u/%s", user.getName())).toUriString();
}
public String followersUri(User user) {
return uri.replacePath(String.format("/u/%s/followers/toc", user.getName())).toUriString();
}
public String followingUri(User user) {
return uri.replacePath(String.format("/u/%s/following/toc", user.getName())).toUriString();
}
public Note makeNote(Message msg) {
Note note = new Note();
note.setId(uri.replacePath(String.format("/m/%d", msg.getMid())).toUriString());
note.setAttributedTo(personUri(msg.getUser()));
if (MessageUtils.isReply(msg)) {
uri.replacePath(String.format("/m/%d#%d", msg.getMid(), msg.getRid())).toUriString();
note.setInReplyTo(uri.replacePath(String.format("/m/%d#%d", msg.getMid(), msg.getReplyto())).toUriString());
}
if (MessageUtils.isPM(msg)) {
note.setTo(Collections.singletonList(activityPubManager.personUri(msg.getTo())));
} else {
note.setTo(Collections.singletonList("https://www.w3.org/ns/activitystreams#Public"));
note.setCc(Collections.singletonList(followersUri(msg.getUser())));
}
note.setPublished(msg.getTimestamp());
note.setContent(MessageUtils.formatMessage(msg.getText()));
if (StringUtils.isNotBlank(msg.getAttachmentType())) {
Link attachment = new Link();
attachment.setHref(msg.getAttachment().getMedium().getUrl());
note.setAttachment(attachment);
}
return note;
}
@Override
public void processSubscribeEvent(SubscribeEvent subscribeEvent) {
}
@Override
public void processLikeEvent(LikeEvent likeEvent) {
}
@Override
public void processPingEvent(PingEvent pingEvent) {
}
@Override
public void processMessageReadEvent(MessageReadEvent messageReadEvent) {
}
}
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