\ticky\session\driverfile

<?php

namespace ticky\session\driver;

use ticky\crypt;
use ticky\session\contract;

class file extends contract {

    protected $config;

    public function __construct($config) {
        $this->config = $config;
    }

    public function set($name, $value, $expire = 0) {
        $expire = $expire ? $expire : $this->config['expire'];
        $expire and setcookie(session_name(), session_id(), time() + $expire, "/");
        // 如果是数组，对数组的每个元素加密
        if (is_array($value)) {
            $value = array_map([$this, 'encrypt'], $value);
        } else {
            $value = $this->encrypt($value);
        }
        $_SESSION[$name] = serialize($value);
        //debug($_SESSION);
    }

    public function get($name) {
        $key = $this->key($name)[0];
        if ($this->has($key)) {
            $value = unserialize($_SESSION[$key]);
            if (!is_array($value)) {
                return $this->decrypt($value);
            }
            $value = array_map([$this, 'decrypt'], $value);
            if ($key = $this->key($name)[1]) {
                return $value[$key];
            }
            return $value;
        }
        return null;
    }

    public function has($key) {
        return isset($_SESSION[$key]);
    }

    public function delete($key) {
        unset($_SESSION[$key]);
    }

    public function clean() {
        $_SESSION = [];
        session_destroy();
    }

    private function key($name) {
        return explode('.', $name);
    }

    private function encrypt($value) {
        return crypt::instance()->encrypt($value);
    }

    private function decrypt($value) {
        return crypt::instance()->decrypt($value);
    }

}