<?php

namespace phpnotify;

/**
 * This could be used to store authorization method in the class.
 *
 * That class helps other classes storing authorization method, which is
 * implemented in more than one class.
 */
class authorization_store {
    /**
     * This variable store current authorization method.
     * @var authorization_method
     */
    private authorization_method $method;

    /** 
     * This initialize new aithorization part of class. It is protected.
     * 
     * This function initialize authorization store. When any method is not
     * provided, then it use default empty authorization. Method could be
     * given there, for example when it is used by class, which is created
     * by class which also store authorization. It is protected, because it
     * would not being used as autonomous class.
     * 
     * @param ?authorization_method Default method of authorization.
     */
    protected function __construct(?authorization_method $method = null) {
        if ($method === null) {
            $method = new empty_authorization();
        }

        $this->method = $method;
    }

    /**
     * That function return current setup access authorization method.
     *
     * @return authorization_method Current authorization method.
     */
    public function get_access_method(): authorization_method {
        return $this->method;
    }
   
    /**
     * This set new access method to use in the requests.
     *
     * @param authorization_method New method of the authorization.
     *
     * @return object Self to chain loading.
     */
    public function access_method(authorization_method $method): object {
        $this->method = $method;
        return $this;
    }
}