From 5be22ee8963cf45190b13b41dc2dac7b7b0bfb01 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Thu, 4 Oct 2018 12:18:42 +0300
Subject: ActivityPub: persist followers and forward message event to them

---
 .../java/com/juick/service/ActivityPubService.java | 53 ++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 juick-server/src/main/java/com/juick/service/ActivityPubService.java

(limited to 'juick-server/src/main/java/com/juick/service/ActivityPubService.java')

diff --git a/juick-server/src/main/java/com/juick/service/ActivityPubService.java b/juick-server/src/main/java/com/juick/service/ActivityPubService.java
new file mode 100644
index 00000000..6200a75e
--- /dev/null
+++ b/juick-server/src/main/java/com/juick/service/ActivityPubService.java
@@ -0,0 +1,53 @@
+package com.juick.service;
+
+import com.juick.User;
+import com.juick.model.AnonymousUser;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.util.UriComponents;
+import org.springframework.web.util.UriComponentsBuilder;
+
+import javax.annotation.Nonnull;
+import javax.inject.Inject;
+import java.util.List;
+
+@Repository
+public class ActivityPubService extends BaseJdbcService implements SocialService {
+    @Value("${ap_base_uri:http://localhost:8080/}")
+    private String baseUri;
+    @Inject
+    private UserService userService;
+
+    @Transactional(readOnly = true)
+    @Override
+    public @Nonnull User getUserByAccountUri(String acct) {
+        UriComponents baseUriComponents = UriComponentsBuilder.fromUriString(baseUri).build();
+        UriComponents acctComponents = UriComponentsBuilder.fromUriString(acct).build();
+        if (acctComponents.getHost().equals(baseUriComponents.getHost())) {
+            // /u/ugnich -> ugnich
+            String userName = acctComponents.getPath().substring(3);
+            return userService.getUserByName(userName);
+        }
+        return AnonymousUser.INSTANCE;
+    }
+
+    @Transactional(readOnly = true)
+    @Override
+    public @Nonnull List<String> getFollowers(User user) {
+        return getJdbcTemplate().queryForList("SELECT acct FROM followers WHERE user_id=?", String.class, user.getUid());
+    }
+
+    @Transactional
+    @Override
+    public void addFollower(User user, String acct) {
+        getJdbcTemplate().update("INSERT INTO followers(user_id, acct) " +
+                "VALUES(?, ?)", user.getUid(), acct);
+    }
+
+    @Transactional
+    @Override
+    public void removeFollower(User user, String acct) {
+        getJdbcTemplate().update("DELETE FROM followers WHERE user_id=? AND acct=?", user.getUid(), acct);
+    }
+}
-- 
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