<?php
    /**
     * Created by PhpStorm.
     * User: stes
     * Date: 07.06.18
     * Time: 17:11
     */
    
    namespace backend\controllers;
    
    use artbox\core\admin\actions\Index;
    use common\models\Author;
    use common\models\Book;
    use yii\filters\AccessControl;
    use yii\filters\VerbFilter;
    use yii\helpers\ArrayHelper;
    use yii\web\Controller;
    use yii\web\NotFoundHttpException;
    use yii\web\Response;
    use yii\web\UploadedFile;

    class BookController extends Controller
    {
        public function behaviors()
        {
            return [
                'verbs'  => [
                    'class'   => VerbFilter::className(),
                    'actions' => [
                        'delete' => [ 'POST' ],
                    ],
                ],
                'access' => [
                    'class' => AccessControl::className(),
                    'rules' => [
                        [
                            'allow' => true,
                            'roles' => [ '@' ],
                        ],
                    ],
                ],
            ];
        }
        public function actions()
        {
            return [
                'index'  => [
                    'class'            => Index::className(),
                    'columns'          => [
                        'title'      => [
                            'type' => Index::ACTION_COL,
                        ],
                        'author' => [
                            'type' => Index::RELATION_COL,
                            'columnConfig' => [
                                'relationField' => 'secondname',
                            ],
                        ],
                        'created_at' => [
                            'type' => Index::DATETIME_COL,
                        ],
                        'status'       => [
                            'type' => Index::STRING_COL,
                        ],
                        'on_main'       => [
                            'type' => Index::STATUS_COL,
                        ],
                    ],
                    'model'            => Book::className(),
                    'hasLanguage'      => false,
                    'enableMassDelete' => true,
                    'modelPrimaryKey'  => 'id',
                    'defaultSort'      =>  [
                        'created_at' => 'DESC'
                    ],
                    'create' => true,
                ],
            ];
        }
    
        public function actionCreate()
        {
            /**
             * @var Book $model;
             */
            $model = new Book();
            $authors = Author::find()->all();
            $data = ArrayHelper::map($authors, 'id', 'secondname');
            if ($model->load(\Yii::$app->request->post()) && $model->save()) {
                $model->saveImage(UploadedFile::getInstanceByName('file'));
                return $this->redirect('index');
            } else {
                return $this->render(
                    'create',
                    [
                        'model' => $model,
                        'data' => $data
                    ]
                );
            }
        }
    
        public function actionUpdate($id)
        {
            /**
             * @var Book $model;
             */
            $model = $this->findModel($id);
        
            if ($model->load(\Yii::$app->request->post()) && $model->save()) {
                $model->saveImage(UploadedFile::getInstanceByName('file'));
                return $this->redirect('index');
            } else {
                return $this->render(
                    'update',
                    [
                        'model' => $model,
                    ]
                );
            }
        }
    
        public function findModel($id)
        {
            $model = Book::find()
                           ->where([ 'id' => $id ])
                           ->one();
            if ($model !== null) {
                return $model;
            } else {
                throw new NotFoundHttpException('The requested page does not exist.');
            }
        }
    
        public function actionDelete($id)
        {
            if (file_exists(\Yii::getAlias('@storage/books/') . $id)) {
                $this->removeDirectory(\Yii::getAlias('@storage/books/') . $id);
            }
            $this->findModel($id)
                 ->delete();
        
            return $this->redirect([ 'index' ]);
        }
    
        public static function removeDirectory($dir)
        {
            if ($objs = glob($dir . "/*")) {
                foreach ($objs as $obj) {
                    is_dir($obj) ? self::removeDirectory($obj) : unlink($obj);
                }
            }
            rmdir($dir);
        }
    
        public function actionDeleteImage()
        {
            \Yii::$app->response->format = Response::FORMAT_JSON;
            $book = Book::find()
                                  ->where([ 'id' => \Yii::$app->request->post('id') ])
                                  ->one();
            if ($book !== null){
                if (file_exists(
                    \Yii::getAlias('@storage/books/') . $book->id . '/' . \Yii::$app->request->post('image')
                )) {
                    unlink(
                        \Yii::getAlias('@storage/books/') . $book->id . '/' . \Yii::$app->request->post(
                            'image'
                        )
                    );
                }
                $book->image = null;
                $book->save();
                return \GuzzleHttp\json_encode('success');
            }
            
            
            return \GuzzleHttp\json_encode('error');
        }
    }