<?php

       namespace Application ;

       use Exception ;
       use ErrorException ;
       use Application\Core\Object ;
       use Application\Core\ApplicationConfig ;
       use Application\Library\Registry\Registry ;
       use Application\Library\RequestParser\RequestParser ;
       use Application\Library\Session\SessionHandler ;
       use Application\Library\Cookie\CookieHandler ;
       use Application\MVC\Models\Database\MySQL\MySQLConnection ;
       use Application\MVC\Controllers\ControllerManager ;
       use Application\MVC\Views\ErrorView ;
       use Application\MVC\Controllers\HomeController ;
       use Application\MVC\Controllers\LoginController ;
       use Application\MVC\Controllers\CategoryController ;
       use Application\MVC\Controllers\ProductController ;
       use Application\MVC\Controllers\ProviderController ;
       use Application\MVC\Controllers\InstallerController ;
       use Application\MVC\Controllers\UnloggedController ;
       use Application\MVC\Controllers\CategoryTaxController ;


       class CotaPreco extends Object {

              public static $instance = null ;
              /**
               * Gerenciador de controladores da aplicação
               * @var ControllerManager
               */
              private $controllerManager = null ;

              /**
               * Constroí a aplicação adicionando os handlers
               */
              public function __construct () {
                     $this->controllerManager = ControllerManager::getInstance ( ) ;
                     $this->controllerManager->addController ( new InstallerController ( ) ) ;
                     $this->controllerManager->addController ( new UnloggedController ( ) ) ;
                     $this->controllerManager->addController ( new HomeController ( ) ) ;
                     $this->controllerManager->addController ( new LoginController ( ) ) ;
                     $this->controllerManager->addController ( new ProviderController ( ) ) ;
              }
              /**
               * Delega a manipulação das requisições feitas à
               * aplicação ao controlador responsável.
               */
              public function handle ( ) {
                     try {
                            Registry::getInstance()->set ( 'ApplicationConfig' , new ApplicationConfig ( ) ) ;
                            Registry::getInstance()->set ( 'Session' , SessionHandler::getInstance ( ApplicationDIR ) ) ;
                            Registry::getInstance()->set ( 'isInstalled' , $this->isInstalled ( ) ) ;
                            Registry::getInstance()->set ( 'RequestParser' , new RequestParser ( ) );
                            Registry::getInstance()->set ( 'Cookie' , CookieHandler::getInstance ( ) ) ;
                            if ( $this->isInstalled ( ) ) {
                                   Registry::getInstance()->set ( 'MySQL' , new MySQLConnection ( ) ) ;
                                   $session = Registry::getInstance ( )->get ( 'Session' ) ;
                                   if ( $session->get ( 'isLogged' ) === TRUE ) {
                                          $this->controllerManager->addController ( new CategoryController ( ) ) ;
                                          $this->controllerManager->addController ( new ProductController ( ) ) ;
                                          $this->controllerManager->addController ( new CategoryTaxController ( ) ) ;
                                   }
                            }
                            $this->controllerManager->handle ( ) ;
                     } catch ( Exception $e ) {
                            $view = new ErrorView ( ) ;
                            $view->setErrorMessage ( $e->getMessage ( ) ) ;
                            $view->display ( ) ;
                     }
              }
              /**
               * Verifica se a aplicação está instalada
               * @return boolean
               */
              public function isInstalled () {
                     $config = Registry::getInstance ()->get ( 'ApplicationConfig' ) ;
                     return filter_var ( $config->getConfig ( 'misc' , 'installed' ) , FILTER_VALIDATE_BOOLEAN ) ;
              }
              /**
               * Recupera a instância da aplicação.
               * @return Application
               */
              public static function getInstance () {
                     if ( self::$instance == null ) {
                            self::$instance = new CotaPreco() ;
                     }
                     return self::$instance ;
              }

              /**
               * Inicializa a aplicação.
               * @see Application::handle()
               */
              public static function initialize () {
                     self::getInstance ()->handle () ;
              }

       }