Chore: Claiming Guest Orders moved from 3dealer to core

src/Customer/Services/GuestOrderClaimer.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace Modules\Core\Customer\Services;
+
+use Illuminate\Contracts\Auth\Authenticatable;
+use Lunar\Base\LunarUser;
+use Lunar\Models\Order;
+
+/**
+ * Attaches placed guest orders to an account when their billing email
+ * matches the account's email, case-insensitively. Only ever called right
+ * after the shopper has proved they own that email — a login code
+ * (Auth\Events\UserAuthenticated), or the code confirming an email change
+ * (a consuming app's own email-change flow, e.g. 3dealer's Account\
+ * EmailController::verify()) — which is what makes matching on email safe.
+ *
+ * Only orders with no customer_id AND no user_id are touched: an order
+ * already attached to any account (guest or otherwise) is left alone.
+ */
+class GuestOrderClaimer
+{
+    public function claim(Authenticatable&LunarUser $user): int
+    {
+        $customer = $user->latestCustomer();
+
+        if (! $customer || ! $user->email) {
+            return 0;
+        }
+
+        return Order::query()
+            ->whereNotNull('placed_at')
+            ->whereNull('customer_id')
+            ->whereNull('user_id')
+            ->whereHas('billingAddress', fn ($query) => $query
+                ->whereRaw('lower(contact_email) = ?', [strtolower($user->email)]))
+            ->update([
+                'customer_id' => $customer->id,
+                'user_id' => $user->id,
+            ]);
+    }
+}