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<?php
/**
 * Copyright (c) 2021 Kaliop Digital Commerce (https://digitalcommerce.kaliop.com) All Rights Reserved.
 * https://opensource.org/licenses/OSL-3.0  Open Software License (OSL 3.0)
 * Krzysztof Majkowski <[email protected]> <[email protected]>
 */
declare(strict_types=1);

namespace Cnc\Catalog\Model;

use Cnc\Catalog\Api\IsSalableInterface;
use Cnc\Catalog\Helper\Data as CncCatalogHelper;
use Cnc\Catalog\Model\Attribute\MsiAttributes;
use Cnc\Checkout\Api\GetAssignedSourceCodesBySkuInterface;
use Cnc\Checkout\Api\GetAssignedSourceCodesInterface;
use Magento\Catalog\Api\ProductRepositoryInterface;
use Magento\Catalog\Model\ResourceModel\Product as ResourceProduct;
use Magento\GroupedProduct\Model\Product\Type\Grouped;
use Magento\GroupedProduct\Model\ResourceModel\Product\Link;
use Magento\Store\Model\StoreManagerInterface;

class IsSalable implements IsSalableInterface
{
    /**
     * @var CachedGetProductSalableQty
     */
    private $cachedGetProductSalableQty;

    /**
     * @var MsiAttributes
     */
    private $msiAttributes;

    /**
     * @var ProductRepositoryInterface
     */
    private $productRepository;

    /**
     * @var ResourceProduct
     */
    private $resourceProduct;

    /**
     * @var CncCatalogHelper
     */
    private $helper;

    /**
     * @var GetAssignedSourceCodesInterface
     */
    private $getAssignedSourceCodes;

    /**
     * @var StoreManagerInterface
     */
    private $storeManager;

    /**
     * @var GetAssignedSourceCodesBySkuInterface
     */
    private $getAssignedSourceCodesBySku;

    /**
     * @var array
     */
    private $cacheInstance = [];

    /**
     * GetProductQty constructor.
     * @param CachedGetProductSalableQty $cachedGetProductSalableQty
     * @param MsiAttributes $msiAttributes
     * @param ProductRepositoryInterface $productRepository
     * @param ResourceProduct $resourceProduct
     * @param CncCatalogHelper $helper
     * @param GetAssignedSourceCodesInterface $getAssignedSourceCodes
     * @param StoreManagerInterface $storeManager
     * @param GetAssignedSourceCodesBySkuInterface $getAssignedSourceCodesBySku
     */
    public function __construct(
        CachedGetProductSalableQty $cachedGetProductSalableQty,
        MsiAttributes $msiAttributes,
        ProductRepositoryInterface $productRepository,
        ResourceProduct $resourceProduct,
        CncCatalogHelper $helper,
        GetAssignedSourceCodesInterface $getAssignedSourceCodes,
        StoreManagerInterface $storeManager,
        GetAssignedSourceCodesBySkuInterface $getAssignedSourceCodesBySku
    ) {
        $this->cachedGetProductSalableQty = $cachedGetProductSalableQty;
        $this->msiAttributes = $msiAttributes;
        $this->productRepository = $productRepository;
        $this->resourceProduct = $resourceProduct;
        $this->helper = $helper;
        $this->getAssignedSourceCodes = $getAssignedSourceCodes;
        $this->storeManager = $storeManager;
        $this->getAssignedSourceCodesBySku = $getAssignedSourceCodesBySku;
    }

    /**
     * @param string $sku
     * @return bool
     * @throws \Magento\Framework\Exception\InputException
     * @throws \Magento\Framework\Exception\LocalizedException
     */
    public function execute(string $sku)
    {
        if (isset($this->cacheInstance[$sku])) {
            return $this->cacheInstance[$sku];
        }

        $product = $this->productRepository->getById($this->resourceProduct->getIdBySku($sku));
        if ($product->getTypeId() == 'grouped') {
            /** @var Grouped $type */
            $type = $product->getTypeInstance();
            $childrenIds = $type->getChildrenIds($product->getId());
            if (is_array($childrenIds) && count($childrenIds)) {
                foreach ($childrenIds[Link::LINK_TYPE_GROUPED] as $childId) {
                    $childSku = $this->helper->getSkuById($childId);
                    $isChildSalable = $this->isSalable($childSku);
                    if ($isChildSalable) {
                        $this->cacheInstance[$sku] = true;
                        return true;
                    }
                }
            }
        } else {
            $isSalable = $this->isSalable($sku);
            $this->cacheInstance[$sku] = $isSalable;
            return $isSalable;
        }

        return false;
    }

    protected function isSalable(string $sku)
    {
        if (isset($this->cacheInstance[$sku])) {
            return $this->cacheInstance[$sku];
        }

        $vhsAttributeId = $this->msiAttributes->getAttributeId('cnc_vhs');

        $product = $this->productRepository->getById($this->resourceProduct->getIdBySku($sku));
        if (!$product->isSalable()) {
            $this->cacheInstance[$sku] = false;
            return false;
        }

        $assignedSources = $this->getAssignedSourceCodesBySku->execute($sku);
        $sourceCodes = $this->getSourceCodes();
        foreach ($sourceCodes as $sourceCode) {
            if ($this->helper->getCncAvailabilityValue($sku, $sourceCode) == 'Out of stock' ||
                !in_array($sourceCode, $assignedSources)) {
                continue;
            }

            $qty = $this->cachedGetProductSalableQty->execute($sku, $sourceCode);

            if ($qty <= 0) {
                $vhsValue = $this->msiAttributes->getAttributeValue(
                    $vhsAttributeId,
                    $sku,
                    $sourceCode
                )->getValue();

                if ($vhsValue) {
                    $this->cacheInstance[$sku] = true;
                    return true;
                }
            } else {
                $this->cacheInstance[$sku] = true;
                return true;
            }
        }
        $this->cacheInstance[$sku] = false;
        return false;
    }

    private function getSourceCodes()
    {
        if (isset($this->cacheInstance['source_codes'])) {
            return $this->cacheInstance['source_codes'];
        }

        $code = $this->storeManager->getWebsite()->getCode();
        $sourceCodes = $this->getAssignedSourceCodes->execute($code);
        $this->cacheInstance['source_codes'] = $sourceCodes;
        return $sourceCodes;
    }
}