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common/models/Basket.php 4.12 KB
fe7b6960   Yarik   Basket
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  <?php
      
      namespace common\models;
      
      use common\modules\product\models\ProductVariant;
      use yii\base\Component;
      use yii\web\NotFoundHttpException;
      
      class Basket extends Component
      {
          
          public $session;
          
          public function __construct(array $config = [ ])
          {
              $this->session = \Yii::$app->session;
              if(!$this->session->has('basket')) {
                  $this->session->set('basket', [ ]);
              }
              parent::__construct($config);
          }
          
          public function add(int $product_variant_id, int $count)
          {
              $data = $this->getData();
              if(array_key_exists($product_variant_id, $data)) {
                  $data[ $product_variant_id ][ 'count' ] += $count;
                  if($data[$product_variant_id]['count'] <= 0) {
                      unset($data[$product_variant_id]);
                  }
              } else {
                  $model = $this->findModel($product_variant_id);
                  $data[ $product_variant_id ] = [
                      'price' => $model->price,
                      'count' => $count,
                  ];
              }
              $this->setData($data);
          }
      
          public function set(int $product_variant_id, int $count)
          {
              $data = $this->getData();
              if(array_key_exists($product_variant_id, $data)) {
                  $data[ $product_variant_id ][ 'count' ] = $count;
                  if($data[$product_variant_id]['count'] <= 0) {
                      unset($data[$product_variant_id]);
                  }
              } else {
                  $model = $this->findModel($product_variant_id);
                  $data[ $product_variant_id ] = [
                      'price' => $model->price,
                      'count' => $count,
                  ];
              }
              $this->setData($data);
          }
          
          public function getData(): array
          {
              return $this->session->get('basket');
          }
          
          public function getItem(int $product_variant_id) {
              $data = $this->getData();
              if(!empty($data[$product_variant_id])) {
                  return $data[$product_variant_id];
              } else {
                  return false;
              }
          }
          
          public function setData(array $data)
          {
              $this->session->set('basket', $data);
          }
          
          public function getSum(): float
          {
              $data = $this->getData();
              $sum = 0;
              foreach($data as $item) {
                  $sum += $item[ 'price' ] * $item[ 'count' ];
              }
              return $sum;
          }
          
          public function getCount(): int {
              $data = $this->getData();
              return count($data);
          }
          
          public function findModel(int $product_variant_id): ProductVariant
          {
              $model = ProductVariant::find()
                                     ->where([ 'product_variant_id' => $product_variant_id ])
                                     ->one();
              if(empty( $model )) {
                  throw new NotFoundHttpException('Product not found');
              } else {
                  return $model;
              }
          }
          
          public function findModels(array $product_variant_ids)
          {
              return ProductVariant::find()
                                   ->where([ 'product_variant_id' => $product_variant_ids ])
                                   ->with([
                                       'product',
                                       'image',
                                   ])
                                   ->all();
          }
          
          public function getModal(): string
          {
              $output = '';
              $data = $this->getData();
              $models = $this->findModels(array_keys($this->getData()));
              if(!empty( $models )) {
                  $output = \Yii::$app->view->renderFile('@frontend/views/basket/modal_items.php', [
                      'models' => $models,
                      'basket' => $this,
                  ]);
              }
              return $output;
          }
      }