<?php 



if (!defined('WP_WIZIAPP_BASE')) 

    exit();



class WiziappSupport {

    private $path = '';

    private static $instance = null;

    

    private function __construct() {

        $this->path = dirname(__FILE__) . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'logs' . DIRECTORY_SEPARATOR;        

    }

    

    public static function getInstance(){

        if (is_null(self::$instance)) {

            $c = __CLASS__;

            self::$instance = new $c;

        }



        return self::$instance;

    }

    

    public function listLogs(){

        if (is_dir($this->path) && is_readable($this->path)){

            if ($logsDir = opendir($this->path)){

                while (($log = readdir($logsDir)) !== false){

                    if (preg_match("/\.log\.php$/", $log) ){

                        $logs[] = array(

                            'name' => $log, 

                            'date' => filemtime($this->path.$log),

                            'size' => filesize($this->path.$log),

                        );

                            

                    }

                } 

                $this->returnResults(array('logs'=>$logs), 'listLogs');

            } else {

                $this->alert(500, "Could not open log directory", 'listLogs');

            }

        } else {

            $this->alert(500, "The log directory does not exists", 'listLogs');

        }      

        

    }

    

    public function getLog($log){  

        $file = $this->path.$log;

        if (file_exists($file)) {

            header('Content-Description: File Transfer');

            header('Content-Type: application/octet-stream');

            header('Content-Disposition: attachment; filename='.basename($file));

            header('Content-Transfer-Encoding: binary');

            header('Expires: 0');

            header('Cache-Control: must-revalidate, post-check=0, pre-check=0');

            header('Pragma: public');

            header('Content-Length: ' . filesize($file));

            ob_clean();

            flush();

            readfile($file);

        } else {

            header("HTTP/1.0 404 Not Found");

        }

        exit;

        

    }

    

    protected function alert($code, $msg, $action=''){

        $status = array(

            'action' => $action,

            'status' => false,

            'code' => $code,

            'message' => Yii::t('yii',$msg),

        );

        

        // API request should never be cached

        header('Cache-Control: no-cache, must-revalidate');

        header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');

        

        $result = array('header' => $status);

        

        header('Content-type: application/json');

        echo json_encode($result);

        exit();

    }  

    

    protected function returnResults($body, $action=''){

        $status = array(

            'action' => $action,

            'status' => true,

            'code' => 200,

            'message' => '',

        );

        

        $result = array_merge(array('header' => $status), $body);

        

        header('Content-type: application/json');

        echo json_encode($result);

        

        exit();

    }  

    

}

