Sindbad~EG File Manager

<?php
namespace Indeed\Ihc\Db;

class OrderMeta
{

    public function __construct(){}

    public function save( $orderId=0, $orderMetaName='', $orderMetaValue='' )
    {
        global $wpdb;
        if ( !$orderId || !$orderMetaName ){
            return false;
        }
        $query = $wpdb->prepare( "SELECT meta_value FROM {$wpdb->prefix}ihc_orders_meta WHERE order_id=%d AND meta_key=%s;", $orderId, $orderMetaName );
        $exists = $wpdb->get_var( $query );
        if ( $exists == null ){
            /// save
            $query = $wpdb->prepare( "INSERT INTO {$wpdb->prefix}ihc_orders_meta VALUES( NULL, %d, %s, %s );", $orderId, $orderMetaName, $orderMetaValue );
        } else {
            /// update
            $query = $wpdb->prepare( "UPDATE {$wpdb->prefix}ihc_orders_meta SET meta_value=%s WHERE order_id=%d AND meta_key=%s;", $orderMetaValue, $orderId, $orderMetaName );
        }
        return $wpdb->query( $query );
    }

    public function get( $orderId=0, $orderMetaName='' )
    {
        global $wpdb;
        if ( !$orderId || !$orderMetaName ){
            return false;
        }
        $query = $wpdb->prepare( "SELECT meta_value FROM {$wpdb->prefix}ihc_orders_meta WHERE order_id=%d AND meta_key=%s;", $orderId, $orderMetaName );
        return $wpdb->get_var( $query );
    }

    public function getIdFromMetaNameMetaValue( $metaKey='', $metaValue='' )
    {
        global $wpdb;
        if ( !$metaKey || !$metaValue ){
            return;
        }
        $query = $wpdb->prepare( "SELECT order_id FROM {$wpdb->prefix}ihc_orders_meta WHERE meta_key=%s AND meta_value=%s ORDER BY id DESC LIMIT 1;", $metaKey, $metaValue );
        return $wpdb->get_var( $query );
    }

	public function getAllByOrderId( $orderId=0 )
  {
      global $wpdb;
      if ( !$orderId ){
          return [];
      }
      $queryString = $wpdb->prepare( "SELECT meta_key, meta_value FROM {$wpdb->prefix}ihc_orders_meta WHERE order_id=%d;", $orderId );
      $data = $wpdb->get_results( $queryString );
      if ( !$data ){
          return [];
      }
      foreach ( $data as $object ){
          $returnData[$object->meta_key] = $object->meta_value;
      }
      return $returnData;
  }

  /**
   * @param string
   * @param string
   * @param string
   * @return bool
   */
  public function updateValueByMetaNameAndValue( $metaKey='', $oldValue='', $newValue='' )
  {
      global $wpdb;
      if ( $metaKey == '' || $oldValue == '' || $newValue == '' ){
          return false;
      }
      if ( $this->getIdFromMetaNameMetaValue( $metaKey, $oldValue ) == false ){
          return false;
      }
      $query = $wpdb->prepare( "UPDATE {$wpdb->prefix}ihc_orders_meta
                                  SET meta_value=%s
                                  WHERE
                                  meta_key=%s
                                  AND
                                  meta_value=%s;",
                        $newValue, $metaKey, $oldValue
      );
      return $wpdb->query( $query );
  }

}