init

app/code/Esun/CustomerMessage/ViewModel/OrderUnread.php

@@ -0,0 +1,29 @@
+<?php
+declare(strict_types=1);
+
+namespace Esun\CustomerMessage\ViewModel;
+
+use Esun\CustomerMessage\Model\ConversationService;
+use Magento\Customer\Model\Session;
+use Magento\Framework\View\Element\Block\ArgumentInterface;
+
+class OrderUnread implements ArgumentInterface
+{
+    public function __construct(
+        private readonly Session $session,
+        private readonly ConversationService $conversations
+    ) {
+    }
+
+    /**
+     * @param int[] $orderIds
+     * @return array<int, int>
+     */
+    public function getUnreadCounts(array $orderIds): array
+    {
+        return $this->conversations->getCustomerUnreadByOrderIds(
+            (int)$this->session->getCustomerId(),
+            $orderIds
+        );
+    }
+}