Achievements engine

AchievementGranter      ←  orchestrace (grant / revoke / reconcile)
AchievementCheckerInterface  ←  kontrakt pro checkery
AchievementCheckJob     ←  cron entry (hodinově)
Checkers/               ←  konkrétní checkery (1 soubor / 1 achievement)

namespace App\Core\Achievements;

interface AchievementCheckerInterface {
    public function getAchievementId(): string;
    public function check(string $userId): bool;
}

class AchievementGranter {
    public function grantIfEarned(string $userId, AchievementCheckerInterface $checker): void;
    public function reconcile(string $userId, array $checkers): void;
}

public function execute(bool $dryRun): void {
    $users = $this->userFacade->getActiveUsers();
    $checkers = $this->registry->getAll();

    foreach ($users as $user) {
        foreach ($checkers as $checker) {
            $this->granter->grantIfEarned($user->id, $checker);
        }
    }
}