<?php
namespace Novaconium;
class Session {
    private $session;

    public function __construct() {
        if (session_status() === PHP_SESSION_NONE) {
            session_start();
        }
        $this->session = &$_SESSION; // Reference $_SESSION to keep them in sync
        if (!isset($this->session['token'])) {
            $this->setToken();
        }
        if (!isset($this->session['messages'])) {
            $this->session['messages'] = []; // Always ensure messages is an array
        }
        if (!isset($this->session['formData'])) {
            $this->session['formData'] = []; // Initialize formData
        }
        if (!isset($this->session['errors'])) {
            $this->session['errors'] = []; // Initialize errors
        }
    }

    public function setToken() {
        $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() {
        return $this->session;
    }

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

    public function write() {
        // No need to assign to $_SESSION since $this->session is a reference
        session_write_close();
    }

    public function kill() {
        $this->session = [];
        $_SESSION = [];
        session_destroy();
    }
}