<?php
    
    namespace backend\controllers;
    
    use developeruz\db_rbac\behaviors\AccessBehavior;
    use common\models\Slider;
    use Yii;
    use common\models\SliderImage;
    use common\models\SliderImageSearch;
    use yii\web\Controller;
    use yii\web\NotFoundHttpException;
    use yii\filters\VerbFilter;
    use yii\web\UploadedFile;
    
    /**
     * SliderImageController implements the CRUD actions for SliderImage model.
     */
    class SliderImageController extends Controller
    {
        
        /**
         * @inheritdoc
         */
        public function behaviors()
        {
            return [
                'access' => [
                    'class' => AccessBehavior::className(),
                    'rules' => [
                        'site' => [
                            [
                                'actions' => [
                                    'login',
                                    'error',
                                ],
                                'allow'   => true,
                            ],
                        ],
                    ],
                ],
                'verbs'  => [
                    'class'   => VerbFilter::className(),
                    'actions' => [
                        'delete' => [ 'POST' ],
                    ],
                ],
            ];
        }
        
        /**
         * Lists all SliderImage models.
         *
         * @param $slider_id Slider id
         *
         * @return mixed
         */
        public function actionIndex($slider_id)
        {
            $searchModel = new SliderImageSearch();
            $dataProvider = $searchModel->search($slider_id, Yii::$app->request->queryParams);
            
            return $this->render('index', [
                'slider_id'    => $slider_id,
                'searchModel'  => $searchModel,
                'dataProvider' => $dataProvider,
            ]);
        }
        
        /**
         * Displays a single SliderImage model.
         *
         * @param integer $id
         * @param         $slider_id Slider id
         *
         * @return mixed
         */
        public function actionView($slider_id, $id)
        {
            return $this->render('view', [
                'slider_id' => $slider_id,
                'model'     => $this->findModel($slider_id, $id),
            ]);
        }
        
        /**
         * Creates a new SliderImage model.
         * If creation is successful, the browser will be redirected to the 'view' page.
         *
         * @param $slider_id Slider id
         *
         * @return mixed
         */
        public function actionCreate($slider_id)
        {
            $model = new SliderImage();
            $model_langs = $model->generateLangs();
            if($model->load(Yii::$app->request->post())) {
                $model->loadLangs(\Yii::$app->request, $model_langs);
                $model->slider_id = $slider_id;
                if(( $image = UploadedFile::getInstance($model, 'image') )) {
                    $model->image = $image->name;
                }
                if($model->save() && $image) {
                    $imgDir = Yii::getAlias('@storage/slider/');
                    if(!is_dir($imgDir)) {
                        mkdir($imgDir, 0755, true);
                    }
                    $image->saveAs(Yii::getAlias('@storage/slider/' . $image->name));
                }
                if($model->linkLangs($model_langs) && $model->saveLangs($model_langs)) {
                    return $this->redirect([
                        'view',
                        'slider_id' => $slider_id,
                        'id'        => $model->slider_image_id,
                    ]);
                } else {
                    return $this->redirect([
                        'update',
                        'slider_id' => $slider_id,
                        'id'        => $model->slider_image_id,
                    ]);
                }
            } else {
                $slider = Slider::findOne($slider_id);
                return $this->render('create', [
                    'slider_id'   => $slider_id,
                    'model'       => $model,
                    'model_langs' => $model_langs,
                    'slider'      => $slider,
                ]);
            }
        }
        
        /**
         * Updates an existing SliderImage model.
         * If update is successful, the browser will be redirected to the 'view' page.
         *
         * @param         $slider_id Slider id
         * @param integer $id
         *
         * @return mixed
         */
        public function actionUpdate($slider_id, $id)
        {
            $model = $this->findModel($slider_id, $id);
            $model_langs = $model->generateLangs();
            if($model->load(Yii::$app->request->post())) {
                $model->loadLangs(\Yii::$app->request, $model_langs);
                if(( $image = UploadedFile::getInstance($model, 'image') )) {
                    $model->image = $image->name;
                }
                if(!$model->image) {
                    $model->image = $model->getOldAttribute('image');
                }
                if($model->save() && $image) {
                    $imgDir = Yii::getAlias('@storage/slider/');
                    if(!is_dir($imgDir)) {
                        mkdir($imgDir, 0755, true);
                    }
                    $image->saveAs(Yii::getAlias('@storage/slider/' . $image->name));
                }
                if($model->linkLangs($model_langs) && $model->saveLangs($model_langs)) {
                    return $this->redirect([
                        'view',
                        'slider_id' => $slider_id,
                        'id'        => $model->slider_image_id,
                    ]);
                }
            }
            $slider = Slider::findOne($slider_id);
            return $this->render('update', [
                'model'       => $model,
                'model_langs' => $model_langs,
                'slider_id'   => $slider_id,
                'slider'      => $slider,
            ]);
        }
        
        /**
         * Deletes an existing SliderImage model.
         * If deletion is successful, the browser will be redirected to the 'index' page.
         *
         * @param         $slider_id Slider id
         * @param integer $id
         *
         * @return mixed
         */
        public function actionDelete($slider_id, $id)
        {
            $this->findModel($slider_id, $id)
                 ->delete();
            
            return $this->redirect([
                'index',
                'slider_id' => $slider_id,
            ]);
        }
        
        /**
         * Finds the SliderImage model based on its primary key value.
         * If the model is not found, a 404 HTTP exception will be thrown.
         *
         * @param         $slider_id Slider id
         * @param integer $id
         *
         * @return SliderImage the loaded model
         * @throws NotFoundHttpException if the model cannot be found
         */
        protected function findModel($slider_id, $id)
        {
            /**
             * @var SliderImage $model
             */
            if(( $model = SliderImage::find()
                                     ->where([
                                         'slider_image_id' => $id,
                                         'slider_id'       => $slider_id,
                                     ])
                                     ->one() ) !== NULL
            ) {
                return $model;
            } else {
                throw new NotFoundHttpException('The requested page does not exist.');
            }
        }
    }