main return only one product for GetProductById

snipcart/snipcart.go

@@ -308,11 +308,15 @@ func (s *Client) GetProductById(id string) (*SnipcartProduct, error) {
 
 	defer response.Body.Close()
 
-	var product SnipcartProduct
-	err = json.NewDecoder(response.Body).Decode(&product)
+	var products SnipcartProductsResponse
+	err = json.NewDecoder(response.Body).Decode(&products)
 	if err != nil {
 		return nil, err
 	}
 
-	return &product, nil
+	if len(products.Items) < 1 {
+		return nil, fmt.Errorf("no products with id '%s'", id)
+	}
+
+	return &products.Items[0], nil
 }