internetpixels/session-manager

<?php

namespace InternetPixels\SessionManager\Manager;

use InternetPixels\SessionManager\Entities\SessionEntity;

/**
 * Class SessionManager
 * @package InternetPixels\SessionManager\Manager
 */
class SessionManager {

    /**
     * Get a session, or false when the session does not exists.
     *
     * @param string $sessionName
     * @param string $defaultValue
     *
     * @return SessionEntity
     */
    public function get( string $sessionName, $defaultValue = '' ) {
        if ( $this->exists( $sessionName ) ) {
            $entity = new SessionEntity();
            $entity->setName( $sessionName );
            $entity->setValue( $_SESSION[$sessionName] );

            return $entity;
        }

        $default = new SessionEntity();
        $default->setName( $sessionName );
        $default->setValue( $defaultValue );

        return $default;
    }

    /**
     * Set a session with a given value, returns true on success.
     *
     * @param SessionEntity $sessionEntity
     *
     * @return bool
     * @throws \Exception
     * @internal param $sessionName
     * @internal param $value
     */
    public function set( SessionEntity $sessionEntity ) {
        if ( empty( $sessionEntity->getName() ) ) {
            throw new \Exception( 'Session name must be set!' );
        }

        $_SESSION[$sessionEntity->getName()] = $sessionEntity->getValue();

        return $this->exists( $sessionEntity->getName() );
    }

    /**
     * Checks if a given session exists.
     *
     * @param string $sessionName
     *
     * @return bool
     */
    public function exists( string $sessionName ) {
        if ( isset( $_SESSION[$sessionName] ) && !empty( $_SESSION[$sessionName] ) ) {
            return true;
        }

        return false;
    }

}