From 4d24b7426da325a32cdc5bd54714d16bfba7c378 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Rapha=C3=ABl=20Gertz?= <git@rapsys.eu>
Date: Wed, 21 Feb 2024 12:12:40 +0100
Subject: [PATCH] Add dance and user collection transformer

---
 Transformer/DanceTransformer.php        | 87 +++++++++++++++++++++++++
 Transformer/SubscriptionTransformer.php | 87 +++++++++++++++++++++++++
 2 files changed, 174 insertions(+)
 create mode 100644 Transformer/DanceTransformer.php
 create mode 100644 Transformer/SubscriptionTransformer.php

diff --git a/Transformer/DanceTransformer.php b/Transformer/DanceTransformer.php
new file mode 100644
index 0000000..16673c4
--- /dev/null
+++ b/Transformer/DanceTransformer.php
@@ -0,0 +1,87 @@
+<?php declare(strict_types=1);
+
+/*
+ * This file is part of the Rapsys AirBundle package.
+ *
+ * (c) Raphaël Gertz <symfony@rapsys.eu>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Rapsys\AirBundle\Transformer;
+
+use Doctrine\Common\Collections\ArrayCollection;
+use Doctrine\Common\Collections\Collection;
+use Doctrine\ORM\EntityManagerInterface;
+
+use Symfony\Component\Form\DataTransformerInterface;
+use Symfony\Component\Form\Exception\TransformationFailedException;
+
+use Rapsys\AirBundle\Entity\Dance;
+
+/**
+ * {@inheritdoc}
+ */
+class DanceTransformer implements DataTransformerInterface {
+	/**
+	 * Public constructor
+	 *
+	 * @param EntityManagerInterface $manager The entity manager
+	 */
+	public function __construct(private EntityManagerInterface $manager) {
+	}
+
+	/**
+	 * Transforms a dance object array or collection to an int array
+	 *
+	 * @param Dance $dances The dance instances array
+	 * @return array The dance ids
+	 */
+	public function transform($dances) {
+		//Without dances
+		if (null === $dances) {
+			return [];
+		}
+
+		//With collection instance
+		if ($dances instanceof Collection) {
+			$dances = $dances->toArray();
+		}
+
+		//Return dance ids
+		return array_map(function ($d) { return $d->getId(); }, $dances);
+	}
+
+	/**
+	 * Transforms an int array to a dance object collection
+	 *
+	 * @param array $ids
+	 * @throws TransformationFailedException when object (dance) is not found
+	 * @return array The dance instances array
+	 */
+	public function reverseTransform($ids) {
+		//Without ids
+		if ('' === $ids || null === $ids) {
+			$ids = [];
+			//With ids
+		} else {
+			$ids = (array) $ids;
+		}
+
+		//Iterate on ids
+		foreach($ids as $k => $id) {
+			//Replace with dance instance
+			$ids[$k] = $this->manager->getRepository(Dance::class)->findOneById($id);
+
+			//Without dance
+			if (null === $ids[$k]) {
+				//Throw exception
+				throw new TransformationFailedException(sprintf('Dance with id "%d" does not exist!', $id));
+			}
+		}
+
+		//Return collection
+		return new ArrayCollection($ids);
+	}
+}
diff --git a/Transformer/SubscriptionTransformer.php b/Transformer/SubscriptionTransformer.php
new file mode 100644
index 0000000..c507063
--- /dev/null
+++ b/Transformer/SubscriptionTransformer.php
@@ -0,0 +1,87 @@
+<?php declare(strict_types=1);
+
+/*
+ * This file is part of the Rapsys AirBundle package.
+ *
+ * (c) Raphaël Gertz <symfony@rapsys.eu>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Rapsys\AirBundle\Transformer;
+
+use Doctrine\Common\Collections\ArrayCollection;
+use Doctrine\Common\Collections\Collection;
+use Doctrine\ORM\EntityManagerInterface;
+
+use Symfony\Component\Form\DataTransformerInterface;
+use Symfony\Component\Form\Exception\TransformationFailedException;
+
+use Rapsys\AirBundle\Entity\User;
+
+/**
+ * {@inheritdoc}
+ */
+class SubscriptionTransformer implements DataTransformerInterface {
+	/**
+	 * Public constructor
+	 *
+	 * @param EntityManagerInterface $manager The entity manager
+	 */
+	public function __construct(private EntityManagerInterface $manager) {
+	}
+
+	/**
+	 * Transforms a subscription object array or collection to an int array
+	 *
+	 * @param Subscription $subscriptions The subscription instances array
+	 * @return array The subscription ids
+	 */
+	public function transform($subscriptions) {
+		//Without subscriptions
+		if (null === $subscriptions) {
+			return [];
+		}
+
+		//With collection instance
+		if ($subscriptions instanceof Collection) {
+			$subscriptions = $subscriptions->toArray();
+		}
+
+		//Return subscription ids
+		return array_map(function ($d) { return $d->getId(); }, $subscriptions);
+	}
+
+	/**
+	 * Transforms an int array to a subscription object collection
+	 *
+	 * @param array $ids
+	 * @throws TransformationFailedException when object (subscription) is not found
+	 * @return array The subscription instances array
+	 */
+	public function reverseTransform($ids) {
+		//Without ids
+		if ('' === $ids || null === $ids) {
+			$ids = [];
+			//With ids
+		} else {
+			$ids = (array) $ids;
+		}
+
+		//Iterate on ids
+		foreach($ids as $k => $id) {
+			//Replace with subscription instance
+			$ids[$k] = $this->manager->getRepository(User::class)->findOneById($id);
+
+			//Without subscription
+			if (null === $ids[$k]) {
+				//Throw exception
+				throw new TransformationFailedException(sprintf('User with id "%d" does not exist!', $id));
+			}
+		}
+
+		//Return collection
+		return new ArrayCollection($ids);
+	}
+}
-- 
2.41.0