implement basic interaction controls

1 files changed, 22 insertions, 1 deletions

diff --git a/Digitigrade/Model/Note.php b/Digitigrade/Model/Note.php
index 0f75f5b..4675546 100644
--- a/Digitigrade/Model/Note.php
+++ b/Digitigrade/Model/Note.php
@@ -266,7 +266,7 @@ class Note extends PushableModel implements TimelineIncludeable, Notifyable {
     }
 
     public function isViewableBy(?UserAccount $viewer): bool {
-        if ($this->privacy->scope == NotePrivacyScope::PUBLIC ) {
+        if ($this->privacy->scope == NotePrivacyScope::PUBLIC) {
             return true;
         }
         if ($viewer == null) {
@@ -275,6 +275,27 @@ class Note extends PushableModel implements TimelineIncludeable, Notifyable {
         return in_array($viewer->actor, $this->getRelevantActors());
     }
 
+    public function isInteractibleBy(string $interactionKind, ?UserAccount $user): bool {
+        if ($user == null) {
+            return false;
+        }
+        if ($user->actor == $this->author) {
+            return true;
+        }
+        $interactors = match ($interactionKind) {
+            'like', 'dislike' => $this->privacy->canOtherInteract,
+            'reshare' => $this->privacy->canReshare,
+            'reply' => $this->privacy->canReply,
+            default => throw new \InvalidArgumentException("invalid interaction kind: $interactionKind")
+        };
+        return match ($interactors) {
+            NotePrivacyInteractors::ALL => true,
+            NotePrivacyInteractors::FOLLOWERS => in_array($user->actor, $this->author->findFollowers()),
+            NotePrivacyInteractors::MUTUALS => in_array($user->actor, $this->author->findMutualFollows()),
+            NotePrivacyInteractors::NONE => false
+        };
+    }
+
     /**
      * Gets this note's formatted content in the given mimetype or null if there isn't one
      * @param string $mimetype content type to return