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<?php
/* --------------------------------------------------------------
   CartDropdownController.inc.php 2017-06-08
   Gambio GmbH
   http://www.gambio.de
   Copyright (c) 2017 Gambio GmbH
   Released under the GNU General Public License (Version 2)
   [http://www.gnu.org/licenses/gpl-2.0.html]
   --------------------------------------------------------------
*/

/**
 * Class CheckQuantityController
 *
 * @extends    HttpViewController
 * @category   System
 * @package    HttpViewControllers
 */
class CheckQuantityController extends HttpViewController
{
    /**
     * @todo use GET and POST REST-API like
     *
     * @return HttpControllerResponse
     */
    public function actionDefault()
    {
        $quantity                     = str_replace(',', '.', $this->_getPostData('cart_quantity'));
        $quantity                     = new DecimalType((float)$quantity);
        $quantityErrorMessage         = $this->_getQuantityErrorMessage(new IdType((int)$this->_getPostData('products_id')),
                                                                        $quantity);
        $combinationStatusInformation = array('STATUS_CODE' => 0, 'STATUS_TEXT' => '');
        if(!is_null($this->_getPostData('combination')))
        {
            $combinationStatusInformation = $this->_getCombinationStatusInformation(new IdType($this->_getPostData('combination')),
                                                                                    $quantity);
        }
        
        $result = $this->_getResponseArray($quantityErrorMessage, $combinationStatusInformation);
        
        return MainFactory::create('JsonHttpControllerResponse', $result);
    }
    
    
    /**
     * @todo use decimal point from current currency instead of , for all currencies
     *
     * @param IdType $productId
     *
     * @return string
     */
    protected function _getQuantityErrorMessage(IdType $productId, DecimalType $quantity)
    {
        $errorMessage        = '';
        $languageTextManager = MainFactory::create('LanguageTextManager', 'general');
        
        /** @var ProductReadService $productReadService */
        $productReadService = StaticGXCoreLoader::getService('ProductRead');
        $product            = $productReadService->getProductById($productId);
        
        $minOrder          = $product->getSettings()->getMinOrder();
        $graduatedQuantity = $product->getSettings()->getGraduatedQuantity();
        
        if($quantity->asDecimal() < $minOrder)
        {
            $errorMessage .= $languageTextManager->get_text('GM_ORDER_QUANTITY_CHECKER_MIN_ERROR_1')
                             . str_replace('.', ',', (string)$minOrder)
                             . $languageTextManager->get_text('GM_ORDER_QUANTITY_CHECKER_MIN_ERROR_2');
        }
        
        if($quantity->asDecimal() > MAX_PRODUCTS_QTY)
        {
            $errorMessage .= $languageTextManager->get_text('GM_ORDER_QUANTITY_CHECKER_MAX_ERROR_1')
                             . (string)MAX_PRODUCTS_QTY
                             . $languageTextManager->get_text('GM_ORDER_QUANTITY_CHECKER_MAX_ERROR_2');
        }
        
        if($graduatedQuantity <= 0)
        {
            $graduatedQuantity = 1;
        }
        $graduatedQuantityCheckResult = $quantity->asDecimal() / $graduatedQuantity;
        
        // workaround for next if-case to avoid calculating failure
        $graduatedQuantityCheckResult = round($graduatedQuantityCheckResult, 4);
        if((int)$graduatedQuantityCheckResult != $graduatedQuantityCheckResult)
        {
            $errorMessage .= $languageTextManager->get_text('GM_ORDER_QUANTITY_CHECKER_GRADUATED_ERROR_1')
                             . str_replace('.', ',', (string)$graduatedQuantity)
                             . $languageTextManager->get_text('GM_ORDER_QUANTITY_CHECKER_GRADUATED_ERROR_2');
        }
        
        return $errorMessage;
    }
    
    
    /**
     * @param IdType      $combiId
     * @param DecimalType $quantity
     *
     * @return array
     */
    protected function _getCombinationStatusInformation(IdType $combiId, DecimalType $quantity)
    {
        $propertiesView = MainFactory::create_object('PropertiesView');
        $statusInfo     = $propertiesView->get_combis_status_by_combis_id_json($combiId->asInt(),
                                                                               $quantity->asDecimal());
        $statusInfo     = json_decode($statusInfo, true);
        
        return $statusInfo;
    }
    
    
    /**
     * @param string $errorMessage
     * @param array  $combinationStatusInformation
     *
     * @return array
     */
    protected function _getResponseArray($errorMessage, array $combinationStatusInformation)
    {
        $result = array(
            'success'     => $errorMessage === '',
            'status_code' => $combinationStatusInformation['STATUS_CODE'],
            'combination' => array(
                'message' => array(
                    'selector' => 'errorMsg',
                    'type'     => 'html',
                    'value'    => $combinationStatusInformation['STATUS_TEXT']
                )
            ),
            'quantity'    => array(
                'message' => array(
                    'selector' => 'errorMsg',
                    'type'     => 'html',
                    'value'    => $errorMessage
                )
            )
        );
        
        return $result;
    }
}