1 files changed, 39 insertions, 0 deletions
diff --git a/Digitigrade/Model/Actor.php b/Digitigrade/Model/Actor.php
index e419ef6..89f4d50 100644
--- a/Digitigrade/Model/Actor.php
+++ b/Digitigrade/Model/Actor.php
@@ -145,6 +145,45 @@ class Actor extends PushableModel implements RpcReceiver {
         $target->rpcCall('unfollow', [$this]);
     }
 
+    /**
+     * @return Actor[] a list of actors that follow this actor (does not include pending follows)
+     */
+    public function findFollowers(): array {
+        $relations = FollowRelation::findAllWithObject($this);
+        $relations = array_filter($relations, function (FollowRelation $rel) {
+            return $rel->status == FollowRelationStatus::ACTIVE;
+        });
+        return array_map(function (FollowRelation $rel) {
+            return $rel->subject;
+        }, $relations);
+    }
+
+    /**
+     * @return Actor[] a list of actors that are followed by this actor (does not include pending follows)
+     */
+    public function findFollowees(): array {
+        $relations = FollowRelation::findAllWithSubject($this);
+        $relations = array_filter($relations, function (FollowRelation $rel) {
+            return $rel->status == FollowRelationStatus::ACTIVE;
+        });
+        return array_map(function (FollowRelation $rel) {
+            return $rel->object;
+        }, $relations);
+    }
+
+    /**
+     * @return Actor[] a list of actors that both follow and are followed by this actor
+     */
+    public function findMutualFollows(): array {
+        $followers = $this->findFollowers();
+        $followees = $this->findFollowees();
+        return array_intersect($followers, $followees);
+    }
+
+    public function findHomeInstance(): Instance {
+        return Instance::findByHostname(hostname_from_uri($this->uri));
+    }
+
     public function jsonSerialize(): array {
         return [
             'type' => 'actor',