refactored code

Signed-off-by: Maurice Preuß (envoyr) <hello@envoyr.com>

src/Id/Concerns/ManagesPricing.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace Anikeen\Id\Concerns;
+
+use Anikeen\Id\ApiOperations\Post;
+use Anikeen\Id\Exceptions\RequestRequiresClientIdException;
+use Anikeen\Id\Result;
+use GuzzleHttp\Exception\GuzzleException;
+
+trait ManagesPricing
+{
+    use Post;
+
+    /**
+     * Make a new order preview (will not be stored into the database).
+     *
+     * VAT is calculated based on the billing address and shown in the order response.
+     *
+     * @param array{
+     *     country_iso: string,
+     *     items: array<array{
+     *         type:        string,
+     *         name:        string,
+     *         description: string,
+     *         price:       float|int,
+     *         unit:        string,
+     *         units:       int
+     *     }>
+     * } $attributes The order data:
+     *   - country_iso:     ISO 3166-1 alpha-2 country code
+     *   - items:           Array of order items (each with type, name, price, unit, units, and quantity)
+     * @throws RequestRequiresClientIdException
+     * @throws GuzzleException
+     */
+    public function createOrderPreview(array $attributes = []): Result
+    {
+        return $this->post('v1/orders/preview', $attributes);
+    }
+}