InMemoryCacheBackofficeCourseRepository.php

<?php

declare(strict_types=1);

namespace CodelyTv\Backoffice\Courses\Infrastructure\Persistence;

use CodelyTv\Backoffice\Courses\Domain\BackofficeCourse;
use CodelyTv\Backoffice\Courses\Domain\BackofficeCourseRepository;
use CodelyTv\Mooc\Courses\Domain\Course;
use CodelyTv\Shared\Domain\Criteria\Criteria;
use function Lambdish\Phunctional\get;

final class InMemoryCacheBackofficeCourseRepository implements BackofficeCourseRepository
{
    private static array               $allCoursesCache = [];
    private static array               $matchingCache   = [];

    public function __construct(private BackofficeCourseRepository $repository)
    {
    }

    public function save(BackofficeCourse $course): void
    {
        $this->repository->save($course);
    }

    public function searchAll(): array
    {
        return empty(self::$allCoursesCache) ? $this->searchAllAndFillCache() : self::$allCoursesCache;
    }

    public function matching(Criteria $criteria): array
    {
        return get($criteria->serialize(), self::$matchingCache) ?: $this->searchMatchingAndFillCache($criteria);
    }

    public function lastCourse(): Course
    {
        $lastCourse = end(self::$allCoursesCache);
        reset(self::$allCoursesCache);

        return $lastCourse;
    }

    private function searchAllAndFillCache(): array
    {
        return self::$allCoursesCache = $this->repository->searchAll();
    }

    private function searchMatchingAndFillCache(Criteria $criteria): array
    {
        return self::$matchingCache[$criteria->serialize()] = $this->repository->matching($criteria);
    }
}