<?php
/**
 * nu-web.loc.
 * User: maxyc
 * Date: 06.10.13 12:38
 *
 * Description:
 *
 */

class File extends EActiveRecord{

    private static $container = 'static.www';
    private static $path = '/uploads/mdb';
    private static $pathCache = '/uploads/mdb/cacheResize';

    public static function model($className = __CLASS__)
    {
        return parent::model($className);
    }

    public function tableName()
    {
        return 'm_file';
    }

    public function rules(){
        return array(
            array('name, file_md5, type', 'required'),
            array('is_color, size, width, height, bits, channels', 'numerical', 'min'=>1),

            array('exif', 'safe')
        );
    }

    public function getOriginal(){
        return Yii::app()->params['serverStaticPath'].self::$path.'/'. substr($this->file_md5, 0, 2).'/'.($this->file_md5).'.'.CFileHelper::getExtension($this->name);
    }

    /**
     * @param $template_name
     * @param bool $recache обновить кеш картинки принудительно
     * @return string
     * @throws CHttpException
     */
    public function getPreview($template_name, $recache = false){
        $template_list = Yii::app()->params['Imagine']['templates'];
        if(!isset($template_list[$template_name]))
            throw new CHttpException(404,'Шаблон размеров изображений не найден: '.$template_name);
        $options = $template_list[$template_name];

        $file_dir = self::$pathCache.'/'.$options['width'].'.'.$options['height'].'/'.substr($this->file_md5, 0, 2);

        if(!file_exists(Yii::getPathOfAlias(self::$container).$file_dir))
            mkdir(Yii::getPathOfAlias(self::$container).$file_dir, 0777, true);

        if(!$recache && file_exists(Yii::getPathOfAlias(self::$container).$file_dir.'/'.($this->file_md5).'.'.CFileHelper::getExtension($this->name)))
            return Yii::app()->params['serverStaticPath'].$file_dir.'/'.($this->file_md5).'.'.CFileHelper::getExtension($this->name);


        if(!isset($options['quality']))
            $options['quality'] = 100;

        $transformation = new Imagine\Filter\Transformation();
        $transformation->thumbnail(new Imagine\Image\Box($options['width'], $options['height']))
            ->save(Yii::getPathOfAlias(self::$container).$file_dir.'/'.($this->file_md5).'.'.CFileHelper::getExtension($this->name), array('quality'=>$options['quality']));

        $imagine= new Imagine\Gd\Imagine();
        $transformation->apply($imagine->open(Yii::getPathOfAlias(self::$container).self::$path.'/'. substr($this->file_md5, 0, 2).'/'.($this->file_md5).'.'.CFileHelper::getExtension($this->name)));

        return Yii::app()->params['serverStaticPath'].$file_dir.'/'.($this->file_md5).'.'.CFileHelper::getExtension($this->name);
    }

    public static function upload($model, $field_name){
        $file = CUploadedFile::getInstance($model, $field_name);
        if(!$file) return;
        $file_name = md5_file($file->tempName);

        if($temp = self::model()->findByAttributes(array('file_md5'=>$file_name))) // если файл уже найден в бд. вернем его ид
            return $temp;

        // иначе продолжаем сохранение файла

        $upload_dir = Yii::getPathOfAlias(self::$container).self::$path;
        $sub_dir = substr($file_name, 0, 2);
        if(!file_exists($upload_dir.'/'.$sub_dir.'/'))
            mkdir($upload_dir.'/'.$sub_dir.'/', 0775, true);

        $save_path = realpath($upload_dir).'/'.$sub_dir.'/'.$file_name.'.'.$file->extensionName;

        $gis = getimagesize($file->tempName);
        $exif = exif_read_data($file->tempName);

        $_file = new self;
        $_file->type = $file->type;
        $_file->size = $file->size;
        $_file->file_md5 = $file_name;
        $_file->name = $file->name;

        $_file->width = $gis[0];
        $_file->height = $gis[1];
        $_file->bits = $gis['bits'];
        $_file->channels = $gis['channels'];
        $_file->is_color = $exif['COMPUTED']['IsColor'];
        $_file->_exif = serialize($exif);

        if($_file->save())
            if(!$file->saveAs($save_path))
                $_file->remove();

        return $_file;
    }
}