feat: add Notification entity

src/Entity/Notification.php

@@ -0,0 +1,78 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Entity;
+
+use App\Repository\NotificationRepository;
+use Doctrine\ORM\Mapping as ORM;
+
+#[ORM\Entity(repositoryClass: NotificationRepository::class)]
+class Notification
+{
+    #[ORM\Id]
+    #[ORM\GeneratedValue]
+    #[ORM\Column]
+    private ?int $id = null;
+
+    #[ORM\ManyToOne(targetEntity: User::class)]
+    #[ORM\JoinColumn(nullable: false)]
+    private ?User $user = null;
+
+    #[ORM\Column(length: 255)]
+    private ?string $message = null;
+
+    #[ORM\Column]
+    private bool $read = false;
+
+    #[ORM\Column]
+    private \DateTimeImmutable $createdAt;
+
+    public function __construct()
+    {
+        $this->createdAt = new \DateTimeImmutable();
+    }
+
+    public function getId(): ?int
+    {
+        return $this->id;
+    }
+
+    public function getUser(): ?User
+    {
+        return $this->user;
+    }
+
+    public function setUser(?User $user): static
+    {
+        $this->user = $user;
+        return $this;
+    }
+
+    public function getMessage(): ?string
+    {
+        return $this->message;
+    }
+
+    public function setMessage(string $message): static
+    {
+        $this->message = $message;
+        return $this;
+    }
+
+    public function isRead(): bool
+    {
+        return $this->read;
+    }
+
+    public function setRead(bool $read): static
+    {
+        $this->read = $read;
+        return $this;
+    }
+
+    public function getCreatedAt(): \DateTimeImmutable
+    {
+        return $this->createdAt;
+    }
+}

src/Repository/NotificationRepository.php

@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Repository;
+
+use App\Entity\Notification;
+use App\Entity\User;
+use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
+use Doctrine\Persistence\ManagerRegistry;
+
+/**
+ * @extends ServiceEntityRepository<Notification>
+ */
+class NotificationRepository extends ServiceEntityRepository
+{
+    public function __construct(ManagerRegistry $registry)
+    {
+        parent::__construct($registry, Notification::class);
+    }
+
+    /**
+     * @return Notification[]
+     */
+    public function findRecentForUser(User $user, int $limit = 20): array
+    {
+        return $this->createQueryBuilder('n')
+            ->andWhere('n.user = :user')
+            ->setParameter('user', $user)
+            ->orderBy('n.createdAt', 'DESC')
+            ->setMaxResults($limit)
+            ->getQuery()
+            ->getResult();
+    }
+
+    public function countUnreadForUser(User $user): int
+    {
+        return $this->count(['user' => $user, 'read' => false]);
+    }
+
+    public function markAllReadForUser(User $user): void
+    {
+        $this->createQueryBuilder('n')
+            ->update()
+            ->set('n.read', ':true')
+            ->where('n.user = :user')
+            ->andWhere('n.read = :false')
+            ->setParameter('true', true)
+            ->setParameter('false', false)
+            ->setParameter('user', $user)
+            ->getQuery()
+            ->execute();
+    }
+}