<?php

/**

 * Created by PhpStorm.

 * User: Mark

 * Date: 2016/1/18

 */

namespace ManaPHP {



    use ManaPHP\Event\Manager;



    /**

     * ManaPHP\Component

     *

     * @property \ManaPHP\Mvc\DispatcherInterface        $dispatcher;

     * @property \ManaPHP\Mvc\RouterInterface            $router

    //* @property \ManaPHP\Mvc\UrlInterface $url

     * @property \ManaPHP\Http\RequestInterface          $request

     * @property \ManaPHP\Http\ResponseInterface         $response

     * @property \ManaPHP\Http\Response\CookiesInterface $cookies

    //* @property \ManaPHP\FilterInterface $filter

     * @property \ManaPHP\Flash\Direct                   $flash

    //* @property \ManaPHP\Flash\Session $flashSession

     * @property \ManaPHP\Http\SessionInterface          $session

     * @property \ManaPHP\Event\ManagerInterface         $eventsManager

     * @property \ManaPHP\DbInterface                    $db

    //* @property \ManaPHP\Security $security

     * //* @property \ManaPHP\CryptInterface $crypt

     * // * @property \ManaPHP\EscaperInterface $escaper

     * @property \ManaPHP\Mvc\Model\ManagerInterface     $modelsManager

     * @property \ManaPHP\Mvc\Model\MetadataInterface    $modelsMetadata

    //     * @property \ManaPHP\Assets\Manager $assets

     * @property \ManaPHP\Di|\ManaPHP\DiInterface        $di

     * @property \ManaPHP\Http\Session\BagInterface      $persistent

     * @property \ManaPHP\Mvc\ViewInterface              $view

     * @property \ManaPHP\Mvc\View\Tag                   $tag

     * @property \ManaPHP\Loader                         $loader

     * @property \ManaPHP\Log\Logger                     $logger

     * @property \ManaPHP\Mvc\View\Renderer              $renderer

     * @property \Application\Configure                  $configure

     * @property \ManaPHP\ApplicationInterface           $application

     */

    class Component implements ComponentInterface

    {

        /**

         * @var \ManaPHP\Event\Manager

         */

        protected $_eventsManager;



        /**

         * @var array

         */

        protected static $_eventPeeks;



        /**

         * @var \ManaPHP\DiInterface

         */

        protected $_dependencyInjector;



        /**

         * Sets the dependency injector

         *

         * @param \ManaPHP\DiInterface $dependencyInjector

         *

         * @return static

         */

        public function setDependencyInjector($dependencyInjector)

        {

            $this->_dependencyInjector = $dependencyInjector;



            return $this;

        }



        /**

         * Returns the internal dependency injector

         *

         * @return \ManaPHP\DiInterface

         */

        public function getDependencyInjector()

        {

            if ($this->_dependencyInjector === null) {

                $this->_dependencyInjector = Di::getDefault();

            }



            return $this->_dependencyInjector;

        }



        /**

         * Magic method __get

         *

         * @param string $propertyName

         *

         * @return object

         */

        public function __get($propertyName)

        {

            if (!is_object($this->_dependencyInjector)) {

                $this->_dependencyInjector = Di::getDefault();

            }



            if ($this->_dependencyInjector->has($propertyName)) {

                return $this->{$propertyName} = $this->_dependencyInjector->getShared($propertyName);

            }



            if ($propertyName === 'di') {

                return $this->{'di'} = $this->_dependencyInjector;

            }



            if ($propertyName === 'persistent') {

                return $this->{'persistent'} = $this->_dependencyInjector->get('sessionBag', [get_class($this), $this->_dependencyInjector]);

            }



            trigger_error('Access to undefined property ' . $propertyName);



            return null;

        }



        /**

         * Attach a listener to the events manager

         *

         * @param string                                    $event

         * @param callable|\ManaPHP\Event\ListenerInterface $handler

         *

         * @return static

         * @throws \ManaPHP\Event\Exception

         */

        public function attachEvent($event, $handler)

        {

            if ($this->_eventsManager === null) {

                $this->_eventsManager = new Manager();

            }



            $this->_eventsManager->attachEvent($event, $handler);



            return $this;

        }



        /**

         * Fires an event in the events manager causing that the active listeners will be notified about it

         *

         * @param string $event

         * @param mixed  $data

         *

         * @return mixed

         */

        public function fireEvent($event, $data = null)

        {

            if (self::$_eventPeeks !== null) {

                foreach (self::$_eventPeeks as $peek) {

                    $peek($event, $this, $data);

                }

            }



            if ($this->_eventsManager !== null) {

                /** @noinspection ExceptionsAnnotatingAndHandlingInspection */

                return $this->_eventsManager->fireEvent($event, $this, $data);

            }



            return null;

        }



        /**

         * @param \Closure $peek

         *

         * @throws Exception

         */

        public static function peekEvents($peek)

        {

            if (self::$_eventPeeks === null) {

                self::$_eventPeeks = [$peek];

            } else {

                self::$_eventPeeks[] = $peek;

            }

        }



        public function __debugInfo()

        {

            $defaultDi = Di::getDefault();



            $data = [];

            foreach (get_object_vars($this) as $k => $v) {



                if ($v === $defaultDi) {

                    continue;

                }



                $data[$k] = $v;

            }



            return $data;

        }

    }

}