<?php

/**
 * assetic Resoure Management loader
 *
 * @author Gary Constable <garyconstable80@gmail.com>
 * @package core/classes
 */


use Assetic\Factory\AssetFactory;
use Assetic\AssetWriter;
//use Assetic\AssetManager;
use Assetic\Factory\Worker\CacheBustingWorker;
use Assetic\FilterManager;
//use Assetic\Filter\UglifyJs2Filter;
use Assetic\Factory\LazyAssetManager;




class resource_loader {


    private $type;
    public  $resource;
    public  $name;

    public  $files      = array();
    public  $filters    = array();
    public  $options    = array();
    public  $prefix    = '';

    private $base_path = '/assets/';

    private $static_name = "/app/config/static_files.inc.php";



    function __construct( $files = array(), $filter = array(), $options = array(), $type = "", $static_name = '', $base_path = '', $prefix = '' ){

        $this->prefix = $prefix;

        if($static_name != ''){  $this->static_name = $static_name; }

        if($base_path != ''){ $this->base_path = $base_path; }

        $this->files = $files;

        $this->type = $type;

        $this->filters = $filter;

        $this->options = $options;


        if( $_ENV['config']['debug'] === false || $_ENV['config']['debug'] === 'false' ){

            //d( SERVER_PATH . $this->static_name);

            require SERVER_PATH . $this->static_name;

            switch($type){

                case 'css':
                    $this->resource = $this->prefix . $this->base_path . 'css/' . $arr['css'];
                    break;

                case 'js':
                    $this->resource = $this->prefix . $this->base_path . 'js/' . $arr['js'];
                    break;
            }


        }else{

            //d(WEB_ROOT . $this->static_name);

            switch($type){

                case 'css':
                    $this->writeFile( 'css', $this->createCss() );
                    break;

                case 'js':
                    $this->writeFile( 'js', $this->createJs() );
                    break;
            }

        }

    }


    public function createCss(){


        $filePath = WEB_ROOT . $this->base_path . 'css';

        $factory = new AssetFactory( $filePath );
        $am = new LazyAssetManager($factory);
        $fm = new FilterManager();

        if(in_array( 'cssmin', $this->filters )){
            $fm->set('cssmin', new \Assetic\Filter\CssMinFilter() );
        }

        if(in_array( 'yui', $this->filters )){
            $fm->set('yui', new \Assetic\Filter\Yui\CssCompressorFilter( BASE_PATH . '/vendor/bin/yuicompressor.jar') );
        }

        $factory->setAssetManager($am);
        $factory->setFilterManager($fm);
        $factory->setDebug(false);

        $factory->addWorker(new CacheBustingWorker($am));

        $css = $factory->createAsset( $this->files, $this->filters, $this->options);
        $am->set( 'css', $css);

        $writer = new AssetWriter( WEB_ROOT . $this->base_path .  'css' );
        $writer->writeManagerAssets( $am );

        $this->resource = $this->prefix . $this->base_path . 'css/' . $css->getTargetPath();

        $this->name = $css->getTargetPath();

        return $this->name;

    }



    public function createJs(){

        $filePath = WEB_ROOT . $this->base_path . 'js';

        $factory = new AssetFactory( $filePath );
        $am = new LazyAssetManager($factory);
        $fm = new FilterManager();

        if(in_array( 'jsmin', $this->filters )){
            $fm->set('jsmin', new \Assetic\Filter\JSMinFilter() );
        }

        if(in_array( 'jsyui', $this->filters )){
            $fm->set('jsyui', new \Assetic\Filter\Yui\JsCompressorFilter( BASE_PATH . '/vendor/bin/yuicompressor.jar') );
        }

        //need to install node.js for this to work!
        if(in_array( 'uglifyjs2', $this->filters )){
            $fm->set('uglifyjs2', new \Assetic\Filter\UglifyJs2Filter( BASE_PATH . '/vendor/joacub/uglify-js2/bin/uglifyjs') );
        }

        $factory->setAssetManager($am);
        $factory->setFilterManager($fm);
        $factory->setDebug(false);

        $factory->addWorker(new CacheBustingWorker($am));

        $js = $factory->createAsset( $this->files, $this->filters, $this->options);
        $am->set( 'js', $js);

        $writer = new AssetWriter( WEB_ROOT . $this->base_path . 'js' );
        $writer->writeManagerAssets( $am );

        $this->resource = $this->prefix . $this->base_path . 'js/' . $js->getTargetPath();

        $this->name = $js->getTargetPath();

        return $this->name;
    }



    public function writeFile( $type, $name){

        //d(SERVER_PATH . $this->static_name);

        if(!file_exists( SERVER_PATH . $this->static_name )){
            file_put_contents( SERVER_PATH . $this->static_name, '' );
        }

        require SERVER_PATH . $this->static_name;

        $tmp = isset($arr) ? $arr : array() ;
        $tmp = array_merge( $tmp, array($type => $name, 'now' => date("D M j G:i:s T Y") ));

        $str  = "<?php ";
        $str .= '$arr = array(';

        foreach($tmp as $index => $value){

            $str .=  '"'.$index.'" => "'. $value .'",' ;

        }

        $str .= ')';
        $str .= ";?>";


        $fp = fopen( SERVER_PATH . $this->static_name, 'w+');
        fwrite($fp, $str);
        fclose($fp);

        if($this->prefix === ''){
            $this->cleanUp($type, $name);
        }
    }



     /**
     * Remove old files compliled by assetic
     *
     * @param string $type
     * @param string $name - name of the file we have just genearted and do not want to remove
     */
    public function cleanUp( $type = '', $name = '' ){

    	$path = pathinfo($name);

    	$dir = WEB_ROOT . '/assets/' . $type . '/' . $path['dirname'] . '/';

    	$files = scandir($dir);

    	if(!empty($files)){

            $ignore = array('..', '.');
            $ignore[] = $path['basename'];

            foreach($files as $var){

                if(!in_array($var, $ignore)){

                    if( file_exists($dir . $var) && !is_dir( $dir . $var) ){
                        unlink($dir . $var);
                    }
                }
            }
    	}
    }
}