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<?php
/**
 * Copyright © eComBricks. All rights reserved.
 * See LICENSE.txt for license details.
 */
declare(strict_types=1);

namespace Ecombricks\InventoryInventorySales\Plugin\StockState;

/**
 * Suggest qty plugin
 */
class SuggestQtyPlugin
{
    
    /**
     * Source manager
     * 
     * @var \Ecombricks\Inventory\Model\SourceManagement 
     */
    protected $sourceManagement;
    
    /**
     * Product management
     * 
     * @var \Ecombricks\InventoryInventoryCatalog\Model\ProductManagement
     */
    protected $productManagement;
    
    /**
     * Get product salable qty
     * 
     * @var \Ecombricks\InventoryInventorySales\Api\GetProductSalableQtyInterface
     */
    protected $getProductSalableQty;
    
    /**
     * Get stock item configuration
     * 
     * @var \Magento\InventoryConfigurationApi\Api\GetStockItemConfigurationInterface
     */
    protected $getStockItemConfiguration;
    
    /**
     * Constructor
     * 
     * @param \Ecombricks\Inventory\Model\SourceManagement $sourceManagement
     * @param \Ecombricks\InventoryInventoryCatalog\Model\ProductManagement $productManagement
     * @param \Ecombricks\InventoryInventorySales\Api\GetProductSalableQtyInterface $getProductSalableQty
     * @param \Magento\InventoryConfigurationApi\Api\GetStockItemConfigurationInterface $getStockItemConfiguration
     * @return void
     */
    public function __construct(
        \Ecombricks\Inventory\Model\SourceManagement $sourceManagement,
        \Ecombricks\InventoryInventoryCatalog\Model\ProductManagement $productManagement,
        \Ecombricks\InventoryInventorySales\Api\GetProductSalableQtyInterface $getProductSalableQty,
        \Magento\InventoryConfigurationApi\Api\GetStockItemConfigurationInterface $getStockItemConfiguration
    )
    {
        $this->sourceManagement = $sourceManagement;
        $this->productManagement = $productManagement;
        $this->getProductSalableQty = $getProductSalableQty;
        $this->getStockItemConfiguration = $getStockItemConfiguration;
    }
    
    /**
     * Suggest source qty
     * 
     * @param \Closure $proceed
     * @param int $productId
     * @param string $sourceCode
     * @param float $qty
     * @return float
     * @throws \Magento\Framework\Exception\LocalizedException
     */
    protected function suggestSourceQty($productId, $sourceCode, $qty)
    {
        $sku = $this->productManagement->getSku((int) $productId);
        $stockItemConfiguration = $this->getStockItemConfiguration->execute($sku, $this->sourceManagement->getSourceStockId($sourceCode));
        $qtyIncrements = $stockItemConfiguration->getQtyIncrements();
        if ($qty <= 0 || $stockItemConfiguration->isManageStock() === false || $qtyIncrements < 2) {
            throw new \Magento\Framework\Exception\LocalizedException(__('Wrong condition.'));
        }
        $minQty = max($stockItemConfiguration->getMinSaleQty(), $qtyIncrements);
        $divisibleMin = ceil($minQty / $qtyIncrements) * $qtyIncrements;
        $salableQty = $this->getProductSalableQty->execute($sku, $sourceCode);
        $maxQty = min($salableQty, $stockItemConfiguration->getMaxSaleQty());
        $divisibleMax = floor($maxQty / $qtyIncrements) * $qtyIncrements;
        if ($qty < $minQty || $qty > $maxQty || $divisibleMin > $divisibleMax) {
            throw new \Magento\Framework\Exception\LocalizedException(__('Wrong condition.'));
        }
        $closestDivisibleLeft = floor($qty / $qtyIncrements) * $qtyIncrements;
        $closestDivisibleRight = $closestDivisibleLeft + $qtyIncrements;
        $acceptableLeft = min(max($divisibleMin, $closestDivisibleLeft), $divisibleMax);
        $acceptableRight = max(min($divisibleMax, $closestDivisibleRight), $divisibleMin);
        return abs($acceptableLeft - $qty) < abs($acceptableRight - $qty) ? $acceptableLeft : $acceptableRight;
    }
    
    /**
     * Around suggest qty
     *
     * @param \Magento\CatalogInventory\Api\StockStateInterface $subject
     * @param \Closure $proceed
     * @param int $productId
     * @param string $sourceCode
     * @param float $qty
     * @return float
     */
    public function aroundSuggestSourceQty(
        \Magento\CatalogInventory\Api\StockStateInterface $subject,
        \Closure $proceed,
        $productId,
        $sourceCode,
        $qty
    ): float
    {
        try {
            return $this->suggestSourceQty($productId, $sourceCode, $qty);
        } catch (\Magento\Framework\Exception\LocalizedException $exception) {
            return $qty;
        }
    }
    
}