Orsdxy

I want to apply functionality for the customer if customer place order within 72 hrs and subtotal greater than 250 then I want to give free shipping method otherwise if above 72 hrs or subtotal is less than 250 then I do not want to show free shipping. so how can I do this? I have done following coding for this functionality.

enter code here

namespace CustomCheckoutCheckoutObserver;

use MagentoFrameworkEventObserverInterface;

class Totalsbefore implements ObserverInterface
{
/**
* custom event handler
*
* @param MagentoFrameworkEventObserver $observer
* @return void
*/

public function execute(MagentoFrameworkEventObserver $observer)
{

$objectManager = MagentoFrameworkAppObjectManager::getInstance();
$customerSession = $objectManager->create('MagentoCustomerModelSession');

if ($customerSession->isLoggedIn()) {

$customer_id = $customerSession->getCustomer()->getId(); 

$objectManager = MagentoFrameworkAppObjectManager::getInstance();
$orderCollection = $objectManager->create('MagentoSalesModelResourceModelOrderCollection');
$order_Collection = $orderCollection->addAttributeToFilter('customer_id',$customer_id)
->addFieldToSelect('created_at')
->addAttributeToFilter('subtotal', array('gteq' => 250))
->setPageSize(1)

->setOrder('created_at', 'desc');

                if(count($order_Collection)>0)

                 {



                     foreach($order_Collection as $order)

                    {

                     $LastOrderDate = $order->getCreatedAt();                    

                    }



                  $LastOrder = strtotime($LastOrderDate);

                   $NextTime = date("Y-m-d H:i:s", strtotime('-1 hours'));

                  $CheckTime = strtotime($NextTime);

                  $objectManager = MagentoFrameworkAppObjectManager::getInstance();

                  $cart = $objectManager->get('MagentoCheckoutModelCart')->getQuote(); 

                  $subTotal = $cart->getSubtotal();

                  $store  =  $cart->getStoreId();

                  $carriers = $objectManager->get('MagentoFrameworkAppConfigScopeConfigInterface')->getValue('carriers');



                  if($LastOrder>=$CheckTime && $subTotal<=250)

                  {

                    $hiddenMethodCode   = 'freeshipping'; 



                     foreach ($carriers as $carrierCode => $carrierConfig) 

                    { 

                         $hiddenMethodCode   = 'freeshipping'; 

                       if( $carrierCode !=  $hiddenMethodCode)

                        {



                          //  $store->saveConfig("carriers/{$carrierCode}/active", '0');



                             $objectManager = MagentoFrameworkAppObjectManager::getInstance(); // Instance of object manager

                          $resource = $objectManager->get('MagentoFrameworkAppResourceConnection');

                          $connection = $resource->getConnection();

                          $tableName = $resource->getTableName('core_config_data'); //gives table name with prefix



                          //Update Data into table

                          $sql = "Update " . $tableName . " Set  value= 0 where path='carriers/{$carrierCode}/active'";



                         // print_r($sql);  

                          $connection->query($sql); 

                        }

                    }          

                  }else{   // < 72 && > 250



                     $objectManager = MagentoFrameworkAppObjectManager::getInstance();

                  $cart = $objectManager->get('MagentoCheckoutModelCart')->getQuote(); 

                  $subTotal = $cart->getSubtotal();

                  $store  =  $cart->getStoreId();

                  $carriers = $objectManager->get('MagentoFrameworkAppConfigScopeConfigInterface')->getValue('carriers');



                      $hiddenMethodCode   = 'freeshipping'; 



                      foreach ($carriers as $carrierCode => $carrierConfig) 

                      {

                        if( $carrierCode ==  $hiddenMethodCode)

                        {



                          $objectManager = MagentoFrameworkAppObjectManager::getInstance(); // Instance of object manager

                          $resource = $objectManager->get('MagentoFrameworkAppResourceConnection');

                          $connection = $resource->getConnection();

                          $tableName = $resource->getTableName('core_config_data'); //gives table name with prefix



                          //Update Data into table

                          $sql = "Update " . $tableName . " Set  value= 0 where path='carriers/{$carrierCode}/active'";



                           $connection->query($sql);

                         }

                      }

                    } 



                   }else{         



                  $objectManager = MagentoFrameworkAppObjectManager::getInstance();

                  $cart = $objectManager->get('MagentoCheckoutModelCart')->getQuote(); 

                  $subTotal = $cart->getSubtotal();

                  $store  =  $cart->getStoreId();

                  $carriers = $objectManager->get('MagentoFrameworkAppConfigScopeConfigInterface')->getValue('carriers');



                          $hiddenMethodCode   = 'freeshipping'; 



                          foreach ($carriers as $carrierCode => $carrierConfig) 

                          {

                            if( $carrierCode ==  $hiddenMethodCode)

                            {



                          //  $store->saveConfig("carriers/{$carrierCode}/active", '0');



                          $objectManager = MagentoFrameworkAppObjectManager::getInstance(); // Instance of object manager

                          $resource = $objectManager->get('MagentoFrameworkAppResourceConnection');

                          $connection = $resource->getConnection();

                          $tableName = $resource->getTableName('core_config_data'); //gives table name with prefix



                          //Update Data into table

                          $sql = "Update " . $tableName . " Set  value= 0 where path='carriers/{$carrierCode}/active'";



                         // print_r($sql);  

                          $connection->query($sql);

                            }

                          }           

                        }



                }   

}

}