<?php

class Orange35_Rewrite_Helper_Data extends Mage_Core_Helper_Abstract
{
    protected $_categoriesWithAnotherOutOfStockLabel = array(272);
    protected $_manageStockParentCategories = array(9, 13, 6, 14, 60, 61, 27, 28);
    protected $_manageStockCategories;

    /**
     * @param $product Mage_Catalog_Model_Product
     * @return string
     */
    public function getStockLabel($product)
    {
        return $this->getAvailability($product)
            ? $this->__('In stock')
            : (count(array_intersect($product->getCategoryIds(), $this->_categoriesWithAnotherOutOfStockLabel))
                ? $this->__('By request (up to three months)')
                : $this->__('Out of stock'));
    }

    /**
     * @param $product Mage_Catalog_Model_Product
     * @return int
     */
    public function getAvailability($product)
    {
        if (count(array_intersect($product->getCategoryIds(), $this->_getInStockCategories()))) {
            return true;
        }
        $outOfStock = true;
        if ('simple' === $product->getTypeId()) {
            //Чоботи
            if (31 == $product->getData('attribute_set_id')) {
                return (float) $product->getData('stock_item')->getData('qty');
            }
            $stockItem = $product->getData('stock_item');
            $outOfStock = !$product->isSalable()
                || $stockItem->getData('manage_stock')
                && $stockItem->getData('is_in_stock')
                && !(float)$stockItem->getData('qty');
        } else if ('configurable' === $product->getTypeId()) {
            /** @var Mage_Catalog_Model_Product_Type_Configurable $type */
            $type = $product->getTypeInstance(true);
            foreach ($type->getUsedProducts(null, $product) as $_usedProduct) {
                /** @var Mage_Catalog_Model_Product $_usedProduct */
                if ($this->getAvailability($_usedProduct)) {
                    $outOfStock = false;
                    break;
                }
            }
        }
        return !$outOfStock;
    }

    protected function _getInStockCategories($outerIds = null)
    {
        if (null === $this->_manageStockCategories) {
            if (null === $outerIds) {
                $ids = $this->_manageStockParentCategories;
            } else {
                $ids = $outerIds;
            }
            $result = array();
            foreach ($ids as $id) {
                /** @var Mage_Catalog_Model_Category $model */
                $model = Mage::getModel('catalog/category')->load($id);
                $keys = array();
                foreach($model->getChildrenCategories()as$key=>$item){
                    $keys[]= $key;
                }
                if (sizeof($model->getChildrenCategories())) {
                    $result = array_merge($result, $keys);
                }
            }
            if (!$outerIds) {
                $this->_manageStockCategories = array_merge($result, $ids);
            }
        }
        return $this->_manageStockCategories;
    }
}