implement policies

1 files changed, 37 insertions, 0 deletions

diff --git a/Digitigrade/Policy/BlockInstance.php b/Digitigrade/Policy/BlockInstance.php
new file mode 100644
index 0000000..5f902f2
--- /dev/null
+++ b/Digitigrade/Policy/BlockInstance.php
@@ -0,0 +1,37 @@
+<?php
+namespace Digitigrade\Policy;
+
+use Digitigrade\Model\Actor;
+use Digitigrade\Model\Interaction;
+use Digitigrade\Model\Note;
+use Digitigrade\Model\PushableModel;
+use Digitigrade\Policy;
+
+class BlockInstance extends Policy {
+    /** @var string[] */
+    private array $blockedHosts;
+
+    public function __construct(string ...$hosts) {
+        $this->blockedHosts = $hosts;
+    }
+
+    private function isBlocked(PushableModel $obj): bool {
+        $objHost = hostname_from_uri($obj->uri);
+        foreach ($this->blockedHosts as $host) {
+            if (str_ends_with($objHost, $host)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public function checkActor(Actor $actor): bool {
+        return !$this->isBlocked($actor);
+    }
+    public function checkInteraction(Interaction $interaction): bool {
+        return !$this->isBlocked($interaction);
+    }
+    public function checkNote(Note $note): bool {
+        return !$this->isBlocked($note);
+    }
+}
\ No newline at end of file