add auth sessions

backend/app/Auth/EloquentSessionRepository.php

@@ -0,0 +1,63 @@
+<?php
+
+namespace App\Auth;
+
+use App\User\UserRepository;
+use Carbon\CarbonInterface;
+use DateTimeImmutable;
+use DateTimeZone;
+
+class EloquentSessionRepository implements SessionRepository
+{
+    public function __construct(
+        private UserRepository $userRepository,
+    ) {}
+
+    public function create(CreateSessionDto $dto): Session
+    {
+        SessionModel::create([
+            'token' => $dto->token,
+            'user_id' => $dto->user->getId(),
+            'created_at' => $dto->createdAt,
+            'expires_at' => $dto->expiresAt,
+        ]);
+
+        return new Session(
+            token: $dto->token,
+            user: $dto->user,
+            createdAt: $dto->createdAt,
+            expiresAt: $dto->expiresAt,
+        );
+    }
+
+    public function findByToken(string $token): ?Session
+    {
+        $model = SessionModel::find($token);
+        if ($model === null) {
+            return null;
+        }
+
+        $user = $this->userRepository->find($model->user_id);
+        if ($user === null) {
+            return null;
+        }
+
+        return new Session(
+            token: $model->token,
+            user: $user,
+            createdAt: $this->toUtc($model->created_at),
+            expiresAt: $this->toUtc($model->expires_at),
+        );
+    }
+
+    public function deleteByToken(string $token): void
+    {
+        SessionModel::where('token', $token)->delete();
+    }
+
+    private function toUtc(CarbonInterface $dateTime): DateTimeImmutable
+    {
+        return DateTimeImmutable::createFromInterface($dateTime)
+            ->setTimezone(new DateTimeZone('UTC'));
+    }
+}