feat: add POST watchlist endpoint

src/Controller/WatchListController.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace App\Controller;
+
+use App\Entity\User;
+use App\Entity\WatchList;
+use Doctrine\Common\Collections\Collection;
+use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\Routing\Attribute\Route;
+use Symfony\Component\Serializer\SerializerInterface;
+
+class WatchListController extends AbstractController
+{
+
+    public function __construct(
+        private readonly SerializerInterface $serializer, private readonly EntityManagerInterface $em
+    )
+    {
+    }
+
+    #[Route(
+        path: '/api/watchlists',
+        name: 'watchlist_get_all_mine',
+        defaults: [
+            '_api_resource_class' => WatchList::class,
+            '_api_operation_name' => 'get_all_mine',
+        ],
+        methods: ['GET']
+    )]
+    public function getWatchLists(): Collection
+    {
+        /** @var User $user */
+        $user = $this->getUser();
+        return $user->getWatchLists();
+    }
+
+    #[Route(
+        path: '/api/watchlists',
+        name: 'watchlist_create',
+        defaults: [
+            '_api_resource_class' => WatchList::class,
+            '_api_operation_name' => 'create',
+        ],
+        methods: ['POST']
+    )]
+    public function createWatchList(Request $request): WatchList
+    {
+        $watchList = $this->serializer->deserialize($request->getContent(), WatchList::class, 'json', ['groups' => 'watchlist:create']);
+        $watchList->setUser($this->getUser());
+        $this->em->persist($watchList);
+        $this->em->flush();
+
+        return $watchList;
+
+    }
+
+}