From a9f0003e809d46093e783d2079be7a952b5f5e0d Mon Sep 17 00:00:00 2001
From: winter
Date: Mon, 31 Mar 2025 21:29:22 +0100
Subject: implement backfilling for newly discovered actors

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

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

diff --git a/Digitigrade/Model/Actor.php b/Digitigrade/Model/Actor.php
index d7fde42..d18c1f5 100644
--- a/Digitigrade/Model/Actor.php
+++ b/Digitigrade/Model/Actor.php
@@ -2,10 +2,13 @@
 namespace Digitigrade\Model;
 
 use Digitigrade\Db;
+use Digitigrade\Job\ProcessIncomingPush;
+use Digitigrade\Job\ProcessIncomingSimplePush;
 use Digitigrade\Notification\PendingFollowActionedNotif;
 use Digitigrade\Notification\PokeNotif;
 use Digitigrade\Notification\UnblockNotif;
 use Digitigrade\Notification\UnfollowNotif;
+use Digitigrade\Pagination;
 use Digitigrade\PokeVerb;
 use Digitigrade\RpcException;
 use Digitigrade\RpcReceiver;
@@ -90,6 +93,10 @@ class Actor extends PushableModel implements RpcReceiver {
         $this->saveExtensions();
     }
 
+    protected function onNewlyDiscovered() {
+        $this->backfill();
+    }
+
     private function findExtensions() {
         $pdo = Db::getInstance()->getPdo();
         $stmt = $pdo->prepare('SELECT uri, data FROM actor_extension WHERE actor_id = ?');
@@ -139,6 +146,40 @@ class Actor extends PushableModel implements RpcReceiver {
         return self::findByUri($uri);
     }
 
+    /**
+     * Fetches this actor's remote feeds and all objects listed by them.
+     * @param ?int $limit Maximum number of objects to fetch
+     * @return void
+     */
+    public function backfill(?int $limit = null) {
+        if (isset($this->endpoints->fullFeed)) {
+            $this->backfillFromFullFeed($limit);
+        } else {
+            $this->backfillFromBasicFeed($limit);
+        }
+    }
+
+    private function backfillFromFullFeed(?int $limit) {
+        $pagination = Pagination::fromUri($this->endpoints->fullFeed);
+        for ($i = 0; isset($limit) ? ($i < $limit) : true; $i++) {
+            $item = $pagination->next();
+            if ($item === false)
+                break;
+            // pretend they're pushes ... it's good enough
+            (new ProcessIncomingPush($item))->submit();
+        }
+    }
+
+    private function backfillFromBasicFeed(?int $limit) {
+        $pagination = Pagination::fromUri($this->endpoints->basicFeed);
+        for ($i = 0; isset($limit) ? ($i < $limit) : true; $i++) {
+            $uri = $pagination->next();
+            if ($uri === false)
+                break;
+            (new ProcessIncomingSimplePush($uri))->submit();
+        }
+    }
+
     public function rpcCall(string $method, array $args, string $customEndpoint = null) {
         // $args = [Actor $actingAs, ?string $requestBody]
         if (!$this->isLocal) {
-- 
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