at the end of the day, it was inevitable

src/AdminBundle/Controller/PlanController.php

@@ -0,0 +1,116 @@
+<?php
+
+namespace AdminBundle\Controller;
+
+use PaymentBundle\Enum\PaymentGatewayEnum;
+use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
+use Sensio\Bundle\FrameworkExtraBundle\Configuration\Security;
+use Sensio\Bundle\FrameworkExtraBundle\Configuration\Template;
+use Symfony\Bundle\FrameworkBundle\Controller\Controller;
+use Symfony\Component\HttpFoundation\RedirectResponse;
+use Symfony\Component\HttpFoundation\Request;
+use UserBundle\Entity\Plan;
+use UserBundle\Entity\Subscription\AbstractSubscription;
+use UserBundle\Form\PlanType;
+use UserBundle\Repository\PlanRepository;
+use UserBundle\Repository\SubscriptionRepository;
+
+/**
+ * Class PlanController
+ * @package AdminBundle\Controller
+ *
+ * @Route("/plans")
+ */
+class PlanController extends Controller
+{
+
+    /**
+     * @Security("is_granted('ROLE_SUPER_ADMIN')")
+     * @Route("/", methods={ "GET" })
+     * @Template
+     *
+     * @return array
+     */
+    public function indexAction()
+    {
+        /** @var PlanRepository $repository */
+        $repository = $this->getDoctrine()->getRepository(Plan::class);
+
+        $plans = $repository->findAll();
+
+        return [ 'plans' => $plans ];
+    }
+
+    /**
+     * @Security("is_granted('ROLE_SUPER_ADMIN')")
+     * @Route("/{id}", methods={ "GET", "POST" }, requirements={ "id": "\d+" })
+     * @Template
+     *
+     * @param Request $request A HTTP Request instance.
+     * @param integer $id      A Plan entity id.
+     *
+     * @return array|RedirectResponse
+     */
+    public function editAction(Request $request, $id)
+    {
+        $em = $this->getDoctrine()->getManager();
+
+        /** @var PlanRepository $repository */
+        $repository = $em->getRepository(Plan::class);
+        $plan = $repository->find($id);
+
+        if (! $plan instanceof Plan) {
+            throw $this->createNotFoundException();
+        }
+
+        $previousPrice = $plan->getPrice();
+
+        $form = $this->createForm(PlanType::class, $plan);
+        $form->handleRequest($request);
+        if ($form->isSubmitted() && $form->isValid()) {
+            $em->persist($plan);
+
+            if (abs($plan->getPrice() - $previousPrice) >= 0.000001) {
+                //
+                // Plan price was changed.
+                //
+                // For now we unsubscribe and disable all subscribed to this plan
+                // users, remove this plan for payment gateway and create new one
+                //
+                // todo rewrite this code when we find out that we should do with already subscribed users.
+                //
+                /** @var SubscriptionRepository $subscriptionRepository */
+                $subscriptionRepository = $em->getRepository(AbstractSubscription::class);
+                $subscriptions = $subscriptionRepository->getForPlan($plan->getId());
+
+                $paymentGateway = $this->get('payment.gateway_factory')
+                    ->getGateway(PaymentGatewayEnum::paypal());
+
+                /** @var AbstractSubscription $subscription */
+                foreach ($subscriptions as $subscription) {
+                    $paymentGateway->cancelSubscription($subscription, 'Billing plan is removed');
+                    $subscription
+                        ->setPayed(false)
+                        ->setPlan(null);
+
+                    $em->persist($subscription);
+                }
+
+                if ($plan->isFree()) {
+                    $paymentGateway->removePlan($plan);
+                } else {
+                    $paymentGateway->updatePlan($plan);
+                }
+            }
+
+            $em->flush();
+
+            return $this->redirect($request->getUri());
+        }
+
+        return [
+            'form' => $form->createView(),
+            'plan' => $plan,
+        ];
+    }
+}