Add restCreateCollection method to enable calling a rest create metho…

…d which returns a collection rather than a single result.

Add ParcelMultiEndpoint to allow creating multi-collo shipments.

src/Endpoints/AbstractEndpoint.php

@@ -66,6 +66,36 @@ protected function restCreate(array $body)
         return ResourceFactory::createFromApiResult($result, $this->getResourceObject(), $this->getSingleResourceKey());
     }
 
+    /**
+     * @param array $body
+     * @return AbstractCollection
+     * @throws ApiException
+     */
+    protected function restCreateCollection(array $body)
+    {
+        $result = $this->client->performHttpCall(
+            self::REST_CREATE,
+            $this->getResourcePath(),
+            $this->parseRequestBody($body)
+        );
+
+        /** @var AbstractCollection $collection */
+        $collection = $this->getResourceCollectionObject(
+            null,
+            null
+        );
+
+        if (is_object($result)) {
+            $result = $result->{$collection->getCollectionResourceName()};
+        }
+
+        foreach ($result as $dataResult) {
+            $collection[] = ResourceFactory::createFromApiResult($dataResult, $this->getResourceObject());
+        }
+
+        return $collection;
+    }
+
     /**
      * @param       $id
      * @param array $filters

src/Endpoints/ParcelMultiEndpoint.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace Imbue\SendCloud\Endpoints;
+
+use Imbue\SendCloud\Exceptions\ApiException;
+use Imbue\SendCloud\Resources\Collections\ParcelCollection;
+use Imbue\SendCloud\Resources\GenericStatus;
+use Imbue\SendCloud\Resources\Parcel;
+use Imbue\SendCloud\Resources\ParcelMulti;
+use Imbue\SendCloud\Resources\ResourceFactory;
+
+class ParcelMultiEndpoint extends AbstractEndpoint
+{
+    /** @var string */
+    protected $resourcePath = 'parcels';
+
+    /**
+     * @return Parcel
+     */
+    protected function getResourceObject(): Parcel
+    {
+        return new Parcel($this->client);
+    }
+
+    /**
+     * @param $previous
+     * @param $next
+     * @return ParcelCollection
+     */
+    protected function getResourceCollectionObject($previous, $next): ParcelCollection
+    {
+        return new ParcelCollection($this->client, $previous, $next);
+    }
+
+    /**
+     * @param array $data
+     * @return ParcelCollection
+     * @throws ApiException
+     */
+    public function create(array $data = []): ParcelCollection
+    {
+        return $this->restCreateCollection($data);
+    }
+}

src/SendCloudApiClient.php

@@ -12,6 +12,7 @@
 use Imbue\SendCloud\Endpoints\InvoiceEndpoint;
 use Imbue\SendCloud\Endpoints\LabelEndpoint;
 use Imbue\SendCloud\Endpoints\ParcelEndpoint;
+use Imbue\SendCloud\Endpoints\ParcelMultiEndpoint;
 use Imbue\SendCloud\Endpoints\ParcelStatusEndpoint;
 use Imbue\SendCloud\Endpoints\SenderAddressEndpoint;
 use Imbue\SendCloud\Endpoints\ShippingMethodEndpoint;
@@ -55,6 +56,8 @@ class SendCloudApiClient
 
     /** @var ParcelEndpoint */
     public $parcels;
+    /** @var ParcelMultiEndpoint */
+    public $parcelsMulti;
     /** @var ParcelStatusEndpoint */
     public $parcelStatuses;
     /** @var ShippingMethodEndpoint */
@@ -98,6 +101,7 @@ public function __construct(ClientInterface $httpClient = null)
     public function initializeEndpoints()
     {
         $this->parcels = new ParcelEndpoint($this);
+        $this->parcelsMulti = new ParcelMultiEndpoint($this);
         $this->parcelStatuses = new ParcelStatusEndpoint($this);
         $this->shippingMethods = new ShippingMethodEndpoint($this);
         $this->shippingProducts = new ShippingProductsEndpoint($this);