Merge pull request #183 from wip44850/LYNX-310_LYNX-302

Merging to create more changes to the task

Author: sumesh-GL

app/code/Magento/Quote/Model/Quote/Item.php

@@ -348,6 +348,7 @@ public function addQty($qty)
         if (!$this->getParentItem() || !$this->getId()) {
             $qty = $this->_prepareQty($qty);
             $this->setQtyToAdd($qty);
+            $this->setPreviousQty($this->getQty());
             $this->setQty($this->getQty() + $qty);
         }
         return $this;

app/code/Magento/QuoteGraphQl/Model/Resolver/CheckAvailability.php

@@ -0,0 +1,123 @@
+<?php
+/************************************************************************
+ *
+ * Copyright 2023 Adobe
+ * All Rights Reserved.
+ *
+ * NOTICE: All information contained herein is, and remains
+ * the property of Adobe and its suppliers, if any. The intellectual
+ * and technical concepts contained herein are proprietary to Adobe
+ * and its suppliers and are protected by all applicable intellectual
+ * property laws, including trade secret and copyright laws.
+ * Dissemination of this information or reproduction of this material
+ * is strictly forbidden unless prior written permission is obtained
+ * from Adobe.
+ * ************************************************************************
+ */
+declare(strict_types=1);
+
+namespace Magento\QuoteGraphQl\Model\Resolver;
+
+use Magento\Framework\Exception\LocalizedException;
+use Magento\Framework\GraphQl\Config\Element\Field;
+use Magento\Framework\GraphQl\Query\ResolverInterface;
+use Magento\Framework\GraphQl\Schema\Type\ResolveInfo;
+use Magento\CatalogInventory\Api\Data\StockStatusInterface;
+use Magento\CatalogInventory\Api\StockStatusRepositoryInterface;
+use Magento\Quote\Model\Quote\Item;
+
+/**
+ * @inheritdoc
+ */
+class CheckAvailability implements ResolverInterface
+{
+    /**
+     * Product type code
+     */
+    private const PRODUCT_TYPE = "bundle";
+
+    /**
+     * @var StockStatusRepositoryInterface
+     */
+    private $stockStatusRepository;
+
+
+    /**
+     * CheckAvailability constructor
+     *
+     * @param StockStatusRepositoryInterface $stockStatusRepository
+     */
+    public function __construct(
+        StockStatusRepositoryInterface $stockStatusRepository
+    ) {
+        $this->stockStatusRepository = $stockStatusRepository;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function resolve(Field $field, $context, ResolveInfo $info, array $value = null, array $args = null)
+    {
+        if (!isset($value['model'])) {
+            throw new LocalizedException(__('"model" value should be specified'));
+        }
+        /** @var Item $cartItem */
+        $cartItem = $value['model'];
+
+        return $this->checkProductQtyStatus($cartItem) ? "available" : "unavailable";
+    }
+
+    /**
+     * @param Item $cartItem
+     * @return bool
+     */
+    private function checkProductQtyStatus($cartItem):bool
+    {
+        $requestedQty = 0;
+        $previousQty = 0;
+
+        if ($cartItem->getProductType() == self::PRODUCT_TYPE) {
+            $qtyOptions = $cartItem->getQtyOptions();
+            $requestedQty = $cartItem->getQtyToAdd() ? $cartItem->getQtyToAdd() : $cartItem->getQty();
+            $previousQty = $cartItem->getPreviousQty() ? $cartItem->getPreviousQty() : 0;
+            $totalReqQty = $previousQty + $requestedQty;
+            foreach($qtyOptions as $qtyOption)
+            {
+                $productId = (int) $qtyOption->getProductId();
+                $requiredItemQty = (float) $qtyOption->getValue();
+                if ($totalReqQty) {
+                    $requiredItemQty = $requiredItemQty * $totalReqQty;
+                }
+
+                if ($this->getProductStockStatus($productId, $requiredItemQty)) {
+                    return false;
+                }
+            }
+        } else {
+            foreach ($cartItem->getQuote()->getItems() as $item) {
+
+                if($item->getItemId() == $cartItem->getItemId() && $item->getQtyToAdd()) {
+                    $requestedQty = (float)$item->getQtyToAdd();
+                    $previousQty = $item->getPreviousQty() ? (float)$item->getPreviousQty() : 0;
+                }
+            }
+            $requiredItemQty =  $requestedQty + $previousQty;
+            $productId = (int) $cartItem->getProduct()->getId();
+            if ($this->getProductStockStatus($productId, $requiredItemQty)) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * @param int $productId
+     * @param float $requiredQuantity
+     * @return bool
+     */
+    private function getProductStockStatus(int $productId, float $requiredQuantity): bool
+    {
+        $stock = $this->stockStatusRepository->get($productId);
+        return ($stock->getQty() < $requiredQuantity) ? true : false;
+    }
+}

app/code/Magento/QuoteGraphQl/etc/schema.graphqls

@@ -360,6 +360,7 @@ interface CartItemInterface @typeResolver(class: "Magento\\QuoteGraphQl\\Model\\
     id: String! @deprecated(reason: "Use `uid` instead.")
     uid: ID! @doc(description: "The unique ID for a `CartItemInterface` object.")
     quantity: Float! @doc(description: "The quantity of this item in the cart.")
+    status: String @resolver(class: "\\Magento\\QuoteGraphQl\\Model\\Resolver\\CheckAvailability") @doc(description: "If qty is more than stock display status as unavailable else available.")
     prices: CartItemPrices @resolver(class: "\\Magento\\QuoteGraphQl\\Model\\Resolver\\CartItemPrices") @doc(description: "Contains details about the price of the item, including taxes and discounts.")
     product: ProductInterface! @doc(description: "Details about an item in the cart.")
     errors: [CartItemError!] @resolver(class: "\\Magento\\QuoteGraphQl\\Model\\Resolver\\CartItemErrors") @doc(description: "An array of errors encountered while loading the cart item")