#29926: Prices should be possibly hidden from products query results

Initial draft

Author: pmarjan

app/code/Magento/CatalogCustomerGraphQl/Model/Resolver/PriceTiers.php

@@ -110,6 +110,11 @@ public function resolve(
         }
 
         $product = $value['model'];
+
+        if ($product->hasData('can_show_price') && $product->getData('can_show_price') === false) {
+            return [];
+        }
+
         $productId = $product->getId();
         $this->tiers->addProductFilter($productId);
 

app/code/Magento/CatalogGraphQl/Model/Resolver/Product/PriceRange.php

@@ -7,6 +7,7 @@
 
 namespace Magento\CatalogGraphQl\Model\Resolver\Product;
 
+use Magento\Catalog\Api\Data\ProductInterface;
 use Magento\CatalogGraphQl\Model\Resolver\Product\Price\Discount;
 use Magento\CatalogGraphQl\Model\Resolver\Product\Price\ProviderPool as PriceProviderPool;
 use Magento\Framework\GraphQl\Query\ResolverInterface;
@@ -66,10 +67,12 @@ public function resolve(
         $returnArray = [];
 
         if (isset($requestedFields['minimum_price'])) {
-            $returnArray['minimum_price'] =  $this->getMinimumProductPrice($product, $store);
+            $returnArray['minimum_price'] =  $this->canShowPrice($product) ?
+                $this->getMinimumProductPrice($product, $store) : $this->formatEmptyResult();
         }
         if (isset($requestedFields['maximum_price'])) {
-            $returnArray['maximum_price'] =  $this->getMaximumProductPrice($product, $store);
+            $returnArray['maximum_price'] =  $this->canShowPrice($product) ?
+                $this->getMaximumProductPrice($product, $store) : $this->formatEmptyResult();
         }
         return $returnArray;
     }
@@ -130,4 +133,39 @@ private function formatPrice(float $regularPrice, float $finalPrice, StoreInterf
             'discount' => $this->discount->getDiscountByDifference($regularPrice, $finalPrice),
         ];
     }
+
+    /**
+     * Check if the product is allowed to show price
+     *
+     * @param ProductInterface $product
+     * @return bool
+     */
+    private function canShowPrice($product): bool
+    {
+        if ($product->hasData('can_show_price') && $product->getData('can_show_price') === false) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Format empty result
+     *
+     * @return array
+     */
+    private function formatEmptyResult(): array
+    {
+        return [
+            'regular_price' => [
+                'value' => null,
+                'currency' => null
+            ],
+            'final_price' => [
+                'value' => null,
+                'currency' => null
+            ],
+            'discount' => null
+        ];
+    }
 }

app/code/Magento/CatalogGraphQl/Model/Resolver/Product/SpecialPrice.php

@@ -28,7 +28,10 @@ public function resolve(Field $field, $context, ResolveInfo $info, array $value
         /** @var PricingSpecialPrice $specialPrice */
         $specialPrice = $product->getPriceInfo()->getPrice(PricingSpecialPrice::PRICE_CODE);
 
-        if ($specialPrice->getValue()) {
+        if ((!$product->hasData('can_show_price')
+                || ($product->hasData('can_show_price') && $product->getData('can_show_price') === true)
+            )
+                && $specialPrice->getValue()) {
             return $specialPrice->getValue();
         }