Add endpoint to get order from quote id

Api/Order/GetOrderFromQuoteIdInterface.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace Bold\Checkout\Api\Order;
+
+use Magento\Sales\Api\Data\OrderInterface;
+
+/**
+ * Gets the order from the quote id.
+ */
+interface GetOrderFromQuoteIdInterface
+{
+    /**
+     * @param int $quoteId
+     * @return \Magento\Sales\Api\Data\OrderInterface
+     */
+    public function getOrder(int $quoteId): OrderInterface;
+}

Model/Order/GetOrderFromQuoteId.php

@@ -0,0 +1,52 @@
+<?php
+declare(strict_types=1);
+
+namespace Bold\Checkout\Model\Order;
+
+use Bold\Checkout\Api\Order\GetOrderFromQuoteIdInterface;
+use Magento\Framework\Api\SearchCriteriaBuilder;
+use Magento\Framework\Exception\LocalizedException;
+use Magento\Sales\Api\Data\OrderInterface;
+use Magento\Sales\Api\OrderRepositoryInterface;
+
+class GetOrderFromQuoteId implements GetOrderFromQuoteIdInterface
+{
+    /**
+     * @var OrderRepositoryInterface
+     */
+    private $orderRepository;
+
+    /**
+     * @var SearchCriteriaBuilder
+     */
+    private $searchCriteriaBuilder;
+
+    public function __construct(
+        OrderRepositoryInterface $orderRepository,
+        SearchCriteriaBuilder $searchCriteriaBuilder
+    ) {
+        $this->orderRepository = $orderRepository;
+        $this->searchCriteriaBuilder = $searchCriteriaBuilder;
+    }
+
+    /**
+     * @param int $quoteId
+     * @return OrderInterface
+     * @throws LocalizedException
+     */
+    public function getOrder(int $quoteId): OrderInterface
+    {
+        $searchCriteria =  $this->searchCriteriaBuilder
+            ->addFilter(OrderInterface::QUOTE_ID, $quoteId)
+            ->create();
+
+        $ordersList = $this->orderRepository->getList($searchCriteria);
+
+        if ($ordersList->getTotalCount() === 0) {
+            throw new LocalizedException(__('No order found with quote id="%1"', $quoteId));
+        }
+
+        $orders = $ordersList->getItems();
+        return reset($orders);
+    }
+}

etc/di.xml

@@ -33,6 +33,7 @@
     <preference for="Bold\Checkout\Api\Data\ModuleVersion\ResultInterface" type="Bold\Checkout\Model\Data\ModuleVersion\Result"/>
     <preference for="Bold\Checkout\Api\Data\ModuleVersion\ModuleVersionInterface" type="Bold\Checkout\Model\Data\ModuleVersion\ModuleVersion"/>
     <preference for="Bold\Checkout\Model\Order\CompleteOrderInterface" type="Bold\Checkout\Model\Order\CompleteOrderPool"/>
+    <preference for="Bold\Checkout\Api\Order\GetOrderFromQuoteIdInterface" type="Bold\Checkout\Model\Order\GetOrderFromQuoteId"/>
     <type name="Bold\Checkout\Model\Order\CompleteOrderPool">
         <arguments>
             <argument name="pool" xsi:type="array">

etc/webapi.xml

@@ -42,6 +42,12 @@
             <resource ref="Magento_Sales::create"/>
         </resources>
     </route>
+    <route method="GET" url="/V1/orders/quote/:quoteId">
+        <service class="Bold\Checkout\Api\Order\GetOrderFromQuoteIdInterface" method="getOrder"/>
+        <resources>
+            <resource ref="Magento_Cart::manage"/>
+        </resources>
+    </route>
     <route method="GET" url="/V1/orders/:publicOrderId/quote/:quoteMaskId/authorizeAndPlace">
         <service class="Bold\Checkout\Api\PlaceOrderInterface" method="authorizeAndPlace"/>
         <resources>