Implement webhook inspector

app/Policies/WebhookEndpointPolicy.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace App\Policies;
+
+use App\Models\User;
+use App\Models\WebhookEndpoint;
+
+class WebhookEndpointPolicy
+{
+    public function viewAny(?User $user): bool
+    {
+        return $user !== null;
+    }
+
+    public function view(?User $user, WebhookEndpoint $webhookEndpoint): bool
+    {
+        return $webhookEndpoint->is_public || $this->isOwner($user, $webhookEndpoint);
+    }
+
+    public function create(?User $user): bool
+    {
+        return $user !== null;
+    }
+
+    public function update(?User $user, WebhookEndpoint $webhookEndpoint): bool
+    {
+        return ! $webhookEndpoint->is_public && $this->isOwner($user, $webhookEndpoint);
+    }
+
+    public function delete(?User $user, WebhookEndpoint $webhookEndpoint): bool
+    {
+        return ($webhookEndpoint->is_public && $webhookEndpoint->user_id === null)
+            || $this->isOwner($user, $webhookEndpoint);
+    }
+
+    private function isOwner(?User $user, WebhookEndpoint $webhookEndpoint): bool
+    {
+        return $user !== null && (string) $webhookEndpoint->user_id === (string) $user->getKey();
+    }
+}