/W3br.php

<?php



$dirs = Array();



/**

 * Performs the necessary additions and scans the page to load

 * @author Leandro Chaves <leandro.chaves@h2asol.com>

 * @link http://leandrochaves.com

 */

class W3br {



    protected $dirList;

    protected $starterList;



    function W3br() {

//        $dirList = DirList::getInstance();

    }



    public static function import() {

        self::loadFile(W3BR_PATH . 'SingletonList.php');

        self::loadFile(W3BR_PATH . 'DirList.php');

        self::loadFile(W3BR_PATH . 'StarterList.php');

        self::loadFile(W3BR_PATH . 'AutoLoadList.php');

        self::dirRegistry(W3BR_PATH . 'io');

    }



    /**

     * Assemble a list of directories with Controller's files

     * @author Leandro Chaves

     * @link http://leandrochaves.com

     */

    public static function dirRegistry($dir) {

//        echo $dir.'<br/>';

        if (is_array($dir)) {

            foreach ($dir as $obj) {

                self::dirRegistry($obj);

            }

        } elseif (is_string($dir) && is_dir($dir)) {

            $dirList = DirList::getInstance();

//            echo $dir.'<br/>';

            $dirList->registry($dir);

        }

        return;

    }



    /**

     * Assemble a list of functions to run on start the framework

     * @author Leandro Chaves

     * @link http://leandrochaves.com

     */

    public static function starterRegistry($function) {

        if (is_array($function)) {

            foreach ($function as $obj) {

                self::starterRegistry($obj);

            }

        } elseif (is_string($function)) {

            $starterList = StarterList::getInstance();

            $starterList->registry($function);

        }

        return;

    }



    /**

     * Assemble a list of functions to run on autoload of the framework

     * @author Leandro Chaves

     * @link http://leandrochaves.com

     */

    public static function autoLoadRegistry($function) {

        if (is_array($function)) {

            foreach ($function as $obj) {

                self::autoLoadRegistry($obj);

            }

        } elseif (is_string($function)) {

            $array = explode("::", $function);

            self::loadClass($array[0]);

            $autoLoadList = AutoLoadList::getInstance();

            $autoLoadList->registry($function);

        }

        return;

    }



    /**

     * Percorre a lista de diretórios registrados para o autoLoad

     * para tentar carregar a classe.

     * @param String $class - nome da classe a ser carregada.

     * @return boolean true - se a classe for encontrada.

     */

    public function autoLoad($class) {

//        $dirList = new DirList();

        $dirList = DirList::getInstance();

//        print_r($dirList->get());

        foreach ($dirList->get() as $dir) {

            $address = $dir . "/" . $class . '.php';

            if (is_file($address)) {

                include_once($address);

                return true;

            }

        }

        return false;

    }



    /**

     * Instantiate a new object of the class passed as parameter

     * @param String $class

     */

    static function loadClass($class) {

        if (!class_exists($class)) {

            if (self::autoLoad($class)) {

                return TRUE;

            } else {

                // through the list of autoload functions

                $autoLoadList = AutoLoadList::getInstance();

                foreach ($autoLoadList->get() as $function) {

                    $array = explode("::", $function);

                    $obj = new $array[0];

                    if ($obj->$array[1]($class)) {

                        return true;

                    }

                }

                // throw exception if the file does not exist

//                throw new Exception('Classe ' . $class . ' Inexistente.');

            }

        }

    }



    public static function loadFile($file) {

        $file = DIR_RAIZ . ((preg_match('/\/$/', DIR_RAIZ)) ? $file : '/' . $file);

        require_once $file;

    }



    /**

     * Try to load the starter page.

     * @param Array $url 

     */

    function index($url) {

        try {

            $cmd = new IndexController;

            $cmd->display($url);

        } catch (Exception $e) {

            echo 'The starter page not exist.';

        }

    }



    public static function getUri() {

        $uri = Array();

        /* Quebra a url em um array */

        if (!self::isConsole()) {

            // Busca a uri, se o acesso for web

            $uri = str_replace(str_replace('http://', '', SUB), '', $_SERVER["REQUEST_URI"]);

            $uri = explode("?", $uri);

            $uri = explode("/", $uri[0]);

            while (0 < sizeof($uri) && ($uri[0] == null || $uri[0] == null)) {

                array_shift($uri);

            }

        } else {

            // Busca o primeiro parâmetro, se o acesso for via console

            $uri = self::getParamUri();

        }

        return $uri;

    }



    private static function getParamUri() {

        $uri = Array();

        if (0 < $_SERVER['argc']) {

            $uri = explode(':', $_SERVER['argv'][1]);

        }

        return $uri;

    }



    function paths() {

        if (!defined("MODULES_PATH")) {

            define("MODULES_PATH", W3BR_PATH . "/Modules");

        }

    }



    /**

     * Run the page based on url

     */

    private function run($url) {

        // Inicia o controle do buffer de saída

        if (!self::isConsole()) {

            ob_start();

        }

        if (sizeof($url) > 2) {

            // remove o último item da url e acrescenta o posfixo.

            $uri = array_reverse($url);

            array_shift($uri);

            $uri[0] = ucfirst(strtolower($uri[0])) . "Controller";

            $uri = array_reverse($uri);

            $this->autoLoad(implode("/", $uri));

            $control = ucfirst(strtolower(W3brUtils::getValue($url, sizeof($url) - 2))) . 'Controller';

            $action = explode("?", strtolower(W3brUtils::getValue($url, sizeof($url) - 1)));

            $function = $action[0] . 'Action';

        } else {

            $control = ucfirst(strtolower(W3brUtils::getValue($url, 0))) . 'Controller';

            $action = explode("?", strtolower(W3brUtils::getValue($url, 1)));

            $function = $action[0] . 'Action';

        }

        //print_r($url);

        // Page on mantenance



        if (MAINTENANCE == true) {

            $cmd = new IndexController();

            $cmd->manutencao($url);

            //check if controller is empty

        } elseif (!isset($url[0]) || NULL == $url[0]) {

            $this->index($url);

        } else {



            try {

                if (!class_exists($control)) {

                    throw new Exception("404: Url não encotrada!");

                }

                $cmd = new $control;

                if ($function) {

                    $cmd->$function($url);

                }

            } catch (Exception $e) {

                LogModule::log($e->getMessage(), 'ERRO');

//                if ($this->isAjax()) {

                $response = Response::getInstance();

                $response->sucesso = Response::NOT_SUCCESS;

                $response->erro = $e->getMessage();

                $response->trace = $e->getTraceAsString();

//                } else {

//                    header('Location: /' . SUB);

//                }

            }

        }



        // Escreve todo o buffer de saída e desliga o buffer

//        echo ob_get_length();

        if (1 >= ob_get_length() && !self::isConsole()) {

            Response::send();

        }

        if (!self::isConsole()) {

            ob_end_flush();

        }

    }



    /**

     * Performs the necessary additions and scans the page to load

     * @author Leandro Chaves <leandro@chaves.in>

     * @link http://leandrochaves.com

     */

    public function start() {

        $this->paths();

        if (!self::isConsole()) {

            session_start();

        }

//        ini_set("memory_limit", "16M");

        ini_set('default_charset', 'UTF-8');

        $url = self::getUri();



        //Check for files to include

        $dirs = array(

            'www/Persistencia',

            'www/Controller',

            W3BR_PATH . 'Includes',

            'www/Model');

        foreach ($dirs as $dir) {

            self::dirRegistry(DIR_RAIZ . $dir);

        }

        // through the list of registered starter functions

        $starterList = StarterList::getInstance();

        foreach ($starterList->get() as $function) {

            $array = explode("::", $function);

//            self::loadClass($array[0]);

            $obj = new $array[0];

            $obj->$array[1]();

        }



        $this->run($url);

    }



    /**

     * Verifica se a requisição veio via ajax ou aplicação.

     * 

     * Sempre que uma requsição Ajax é disparada um header é setado nesta requisição chamada HTTP_X_REQUESTED_WITH e o valor dela é setado como XMLHttpRequest.

     * 

     */

    public function isAjax() {

        return (!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest');

    }



    /**

     * Verifica se a aplicação está rodando no console.

     * @return Boolean

     */

    public static function isConsole() {

        return (!empty($_SERVER['argc']));

    }



}



?>