<?php

class Session {
    private $session;

    public function __construct() {
        if (!isset($_SESSION)) {
            session_start();
            $this->session = $_SESSION;
        } else {
            $this->session = $_SESSION;
        }
        $this->setToken();
    }

    public function setToken() {
        if (!isset($this->session['token'])) {
            $this->session['token'] = bin2hex(random_bytes(32));
        }
    }

    public function set($key, $value) {
        $this->session[$key] = $value;
    }

    public function get($key) {
        return isset($this->session[$key]) ? $this->session[$key] : null;
    }

    public function flash($key) {
        $return = $this->get($key);
        $this->delete($key);
        return $return;
    }

    public function debug() {
        print_r($this->session);
    }

    public function delete($key) {
        if (isset($this->session[$key])) {
            unset($this->session[$key]);
        }
    }

    public function write() {
        $_SESSION = $this->session;
        session_write_close();
    }

}