common/modules/file/controllers/UploaderController.php

<?php
/**
 * Created by PhpStorm.
 * User: Cibermag
 * Date: 31.08.2015
 * Time: 9:58
 */
namespace common\modules\file\controllers;
use Yii;
use yii\helpers\ArrayHelper;
use yii\web\UploadedFile;
use common\modules\file\models\ImageSizerForm;
use yii\web\Controller;
use Imagine\Gd\Imagine;
use Imagine\Image\Box;
use yii\imagine\Image;
class UploaderController extends Controller {
    public function isBigger($width,$height,$w,$h)
    {
        if($width>$w){
            return true;
        }else if($height >$h) {
            return true;
        }
        return false;
    }
    private function getUserPath(){
        if(isset(Yii::$app->user->id)){
            return 'user_'.Yii::$app->user->id;
        }else {
            return 'guest';
        }
    }
    private function resizeImg($w, $h, $imageAlias,$imageAliasSave){
        $img = Image::getImagine()->open(Yii::getAlias($imageAlias));
        $size = $img->getSize();
        $width = $size->getWidth();
        $height = $size->getHeight();
        $e_width = $w/$h;
        $e_height = $h/$w;
        $e1_width = $width/$height;
        $e1_height = $height/$width;
            if($e_width<$e1_width){
                $new_width = $width*($e_width/$e1_width);
                $y = 0;
                $x = $width/ 2-($new_width/2);
                $width = $new_width;
            }else {
                $new_height = $height*($e_height/$e1_height);
                $x = 0;
                $y = $height/2-($new_height/2);
                $height = $new_height;
            }
        Image::crop($imageAlias, $width, $height,[$x,$y])
            ->save(Yii::getAlias($imageAliasSave), ['quality' =>
                100]);
        $imagine = new Imagine();
        $imagine->open($imageAliasSave)
            ->resize(new Box($w, $h))
            ->save($imageAliasSave, array('flatten' => false));
    }
    private function deleteImages($old_img){
        if(!empty($old_img) && file_exists($_SERVER['DOCUMENT_ROOT'].$old_img)){
            $rootDir = explode("/", $old_img);
            $row = $_SERVER['DOCUMENT_ROOT'].'/'.$rootDir[1].'/'.$rootDir[2].'/'.$rootDir[3].'/';
            $allFiles = scandir($row);
            $allFiles = array_slice($allFiles, 2);
            foreach($allFiles as $oldFile){
                unlink($row.$oldFile);
            }
        }
    }
    public function actionDeleteImage(){
        $request = Yii::$app->request->post();
        if($request){
            if ($request['old_img']) {
                $this->deleteImages($request['old_img']);
            }
            if(isset($request['action']) && $request['action']=='save'){
                $object = str_replace('-', '\\',$request['model']);
                $model = new $object;
                $model = $model->findOne($request['id']);
                $model->$request['field'] = $request['new_url'];
                $model->save();
            }
        }
    }
    public function actionDownloadPhoto()
    {
        $model = new ImageSizerForm();
        $request = Yii::$app->request->post();
        if ($request) {
            $model->multi = isset($request['multi'])? 1 : 0;
            $model->file = UploadedFile::getInstance($model, 'file');
            $md5_file = md5_file($model->file->tempName).rand(1, 1000);
            $imgDir = Yii::getAlias('@storage/'.$this->getUserPath().'/'.$md5_file.'/');
            $imageOrigAlias = Yii::getAlias($imgDir.'original'.'.'.$model->file->extension);
            if(!is_dir($imgDir)) {
                mkdir($imgDir, 0755, true);
            }
            $model->file->saveAs($imageOrigAlias);
            if(isset($request['size'] )){
                $request['size'] = ArrayHelper::toArray(json_decode($request['size']));
                foreach($request['size'] as $size){
                    if($size['width'] && $size['height']){
                        $imageAlias = Yii::getAlias($imgDir.$size['width'].'x'.$size['height'].'.'.$model->file->extension);
                        $imageLink = '/storage/'.$this->getUserPath().'/'.$md5_file.'/'.$size['width'].'x'.$size['height'].'.'.$model->file->extension;
                        $this->resizeImg($size['width'], $size['height'], $imageOrigAlias,$imageAlias);
                    }
                }
            } else {
                $imageLink = '/storage/'.$this->getUserPath().'/'.$md5_file.'/'.'original'.'.'.$model->file->extension;
            }
            if($model->multi){
                $view = $this->renderPartial('@common/widgets/views/_gallery_item', [
                    'item' => ['image'=>$imageLink],
                ]);
                return json_encode(['link'=>$imageLink, 'view' =>$view]);
            } else {
                return json_encode(['link'=>$imageLink]);
            }
        }
    }
    public function getex($filename) {
        return end(explode(".", $filename));
    }
    public function actionImagesUpload(){
        if($_FILES['upload'])
        {
            if (($_FILES['upload'] == "none") OR (empty($_FILES['upload']['name'])) )
            {
                $message = "Вы не выбрали файл";
            }
            else if ($_FILES['upload']["size"] == 0 OR $_FILES['upload']["size"] > 2050000)
            {
                $message = "Размер файла не соответствует нормам";
            }
            else if (($_FILES['upload']["type"] != "image/jpeg") AND ($_FILES['upload']["type"] != "image/jpeg") AND ($_FILES['upload']["type"] != "image/png") AND ($_FILES['upload']['type'] != 'image/gif'))
            {
                $message = "Допускается загрузка только картинок JPG и PNG.";
            }
            else if (!is_uploaded_file($_FILES['upload']["tmp_name"]))
            {
                $message = "Что-то пошло не так. Попытайтесь загрузить файл ещё раз.";
            }
            else{
                $name =$_FILES['upload']['name'].'.'.$this->getex($_FILES['upload']['name']);
                $path = "../../storage/".$this->getUserPath()."/images/";
                if(!is_dir($path)) {
                    mkdir($path, 0755, true);
                }
                move_uploaded_file($_FILES['upload']['tmp_name'], $path.$name);
                $full_path = '/storage/'.$this->getUserPath().'/images/'.$name;
                $message = "Файл ".$_FILES['upload']['name']." загружен";
            }
            $callback = $_REQUEST['CKEditorFuncNum'];
            echo '<script type="text/javascript">window.parent.CKEDITOR.tools.callFunction("'.$callback.'", "'.$full_path.'", "'.$message.'" );</script>';
        }
    }
}