From 8ca2452dd05f614d55d2fd3ce188d9d04f44d285 Mon Sep 17 00:00:00 2001
From: winter
Date: Fri, 20 Dec 2024 17:57:36 +0000
Subject: implement deletion/tombstones?

---
 Digitigrade/Model/PushableModel.php | 42 ++++++++++++++++++++++++++++++++++++-
 1 file changed, 41 insertions(+), 1 deletion(-)

(limited to 'Digitigrade/Model/PushableModel.php')

diff --git a/Digitigrade/Model/PushableModel.php b/Digitigrade/Model/PushableModel.php
index c008320..9de3507 100644
--- a/Digitigrade/Model/PushableModel.php
+++ b/Digitigrade/Model/PushableModel.php
@@ -1,11 +1,24 @@
 <?php
 namespace Digitigrade\Model;
 
+use Digitigrade\Job\PushObject;
+
 abstract class PushableModel extends FetchableModel implements \JsonSerializable {
     public ?int $id;
     public string $uri;
+    public bool $deleted = false;
+
+    public static function importFromReceivedObject(\stdClass $data, bool $autoSave = true): ?static {
+        if ($data->type == 'tombstone') {
+            // actually just delete the object if we know it and do nothing if not
+            $obj = static::findWhere('uri = ?', [$data->self]);
+            if ($obj == null)
+                return null;
+            $obj->deleted = true;
+            $obj->save();
+            return null;
+        }
 
-    public static function importFromReceivedObject(\stdClass $data, bool $autoSave = true): static {
         $obj = static::createFromJson($data, $autoSave);
         if ($autoSave) {
             $obj->save();
@@ -13,4 +26,31 @@ abstract class PushableModel extends FetchableModel implements \JsonSerializable
         }
         return $obj;
     }
+
+    /**
+     * @return Instance[] a list of instances who this object should be pushed to
+     */
+    protected abstract function getRelevantServers(): array;
+
+    /**
+     * Sends this object to all instances it's relevant to.
+     * 
+     * Please don't call this on non-local objects :3
+     * @return void
+     */
+    public function publish() {
+        foreach ($this->getRelevantServers() as $instance) {
+            (new PushObject($this, $instance))->submit();
+        }
+    }
+
+    /**
+     * Marks this object as deleted and publishes a tombstone in its place.
+     * @return void
+     */
+    public function markDeleted() {
+        $this->deleted = true;
+        $this->save();
+        $this->publish();
+    }
 }
\ No newline at end of file
-- 
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