<?php
/**
 * This file belongs to the YIT Plugin Framework.
 *
 * This source file is subject to the GNU GENERAL PUBLIC LICENSE (GPL 3.0)
 * that is bundled with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://www.gnu.org/licenses/gpl-3.0.txt
 *
 * @package YITH WooCommerce Request A Quote Premium
 */

if ( ! defined( 'ABSPATH' ) || ! defined( 'YITH_YWRAQ_VERSION' ) ) {
	exit; // Exit if accessed directly.
}

/**
 * Implements the YITH_Request_Quote class.
 *
 * @class   YITH_Request_Quote
 * @since   1.0.0
 * @author  YITH
 * @package YITH
 */
if ( ! class_exists( 'YITH_Request_Quote' ) ) {

	/**
	 * Class YITH_Request_Quote
	 */
	class YITH_Request_Quote {

		/**
		 * Single instance of the class
		 *
		 * @var \YITH_Request_Quote
		 */
		protected static $instance;

		/**
		 * Session object
		 *
		 * @var string
		 */
		public $session_class;

		/**
		 * Content of session
		 *
		 * @var array
		 */
		public $raq_content = array();

		/**
		 * List of variations
		 *
		 * @var array
		 */
		public $raq_variations = array();

		/**
		 * Returns single instance of the class
		 *
		 * @return \YITH_Request_Quote
		 * @since 1.0.0
		 */
		public static function get_instance() {
			if ( is_null( self::$instance ) ) {
				self::$instance = new self();
			}

			return self::$instance;
		}

		/**
		 * Constructor
		 *
		 * Initialize plugin and registers actions and filters to be used
		 *
		 * @since  1.0.0
		 * @author Emanuela Castorina
		 */
		public function __construct() {

			$this->_run();

			add_action( 'wp_loaded', array( $this, 'start_session' ) );

			/* plugin */
			if ( ! isset( $_REQUEST['action'] ) || 'yith_ywraq_action' !== $_REQUEST['action'] || ywraq_yit_contact_form_installed() ) { //phpcs:ignore WordPress.Security.NonceVerification.Recommended
				// register plugin to licence/update system.
				add_action( 'wp_loaded', array( $this, 'register_plugin_for_activation' ), 99 );
				add_action( 'admin_init', array( $this, 'register_plugin_for_updates' ) );
				add_action( 'plugins_loaded', array( $this, 'plugin_fw_loader' ), 15 );
			} else {
				remove_action( 'plugins_loaded', array( $this, 'plugin_fw_loader' ), 15 );
				include_once YITH_YWRAQ_DIR . 'plugin-fw/yit-woocommerce-compatibility.php';
			}

			/* ajax action */
			add_action( 'wc_ajax_yith_ywraq_action', array( $this, 'ajax' ) );

			// add quote from query string.
			add_action( 'wp_loaded', array( $this, 'add_to_quote_action' ), 30 );

			/* session settings */
			add_action( 'wp_loaded', array( $this, 'init' ), 30 );                // Get raq after WP and plugins are loaded.
			add_action( 'wp', array( $this, 'maybe_set_raq_cookies' ), 99 );      // Set cookies.

			/* email actions and filter */
			add_filter( 'woocommerce_email_classes', array( $this, 'add_woocommerce_emails' ) );
			add_action( 'woocommerce_init', array( $this, 'load_wc_mailer' ) );
			add_action( 'wp_loaded', array( $this, 'send_message' ), 30 );

			add_action( 'woocommerce_created_customer', array( $this, 'add_quote_to_new_customer' ), 10, 3 );

			// gutemberg blocks.
			add_filter( 'woocommerce_blocks_product_grid_item_html', array( $this, 'add_raq_button_to_block' ), 10, 3 );

			// add my account endpoints.
			add_action( 'init', array( $this, 'add_my_account_endpoints' ) );

			// Set cookies before shutdown and ob flushing.
			add_action( 'shutdown', array( $this, 'maybe_set_raq_cookies' ), 0 ); // Set cookies before shutdown and ob flushing.


		}


		/**
		 * Add the request a quote buttons inside the product grid block of Gutenberg.
		 *
		 * @param            $render
		 * @param            $data
		 * @param WC_Product $product product object.
		 *
		 * @return mixed
		 */
		public function add_raq_button_to_block( $render, $data, $product ) {
			if ( 'yes' === get_option( 'ywraq_show_btn_woocommerce_blocks' ) ) {
				$shortcode = '[yith_ywraq_button_quote product="' . $product->get_id() . '"]';
				$data->raq = is_callable( 'apply_shortcodes' ) ? apply_shortcodes( $shortcode ) : do_shortcode( $shortcode );
				$render    = str_replace( '</li>', $data->raq . '</li>', $render );
			}

			return $render;
		}

		/**
		 * Include files and classes for the premium version.
		 *
		 * @since  2.0
		 * @author Emanuela Castorina <emanuela.castorina@yithemes.com>
		 */
		private function _run() { //phpcs:ignore

			if ( ! class_exists( 'WC_Session' ) ) {
				require_once WC()->plugin_path() . '/includes/abstracts/abstract-wc-session.php';
			}
			require_once YITH_YWRAQ_INC . 'class.yith-ywraq-session.php';

			if ( $this->is_admin() ) {
				require_once YITH_YWRAQ_INC . 'class.yith-request-quote-admin.php';
				YITH_YWRAQ_Admin();
			} else {
				require_once YITH_YWRAQ_INC . 'class.yith-ywraq-shortcodes.php';
				require_once YITH_YWRAQ_INC . 'class.yith-request-quote-frontend.php';
				YITH_YWRAQ_Frontend();
			}
			require_once YITH_YWRAQ_INC . 'class.yith-ywraq-cron.php';

			$this->_plugin_integrations();
		}


		/**
		 * Include the files and the classes if necessary.
		 *
		 * @since  2.0
		 * @author Emanuela Castorina <emanuela.castorina@yithemes.com>
		 */
		private function _plugin_integrations() { //phpcs:ignore

			/* compatibility with email template WC_Subscriptions */
			if ( class_exists( 'WC_Subscriptions' ) ) {
				add_filter( 'ywraq_quote_subtotal_item', array( $this, 'update_subtotal_item_price' ), 10, 3 );
				add_filter( 'ywraq_quote_subtotal_item_plain', array( $this, 'update_subtotal_item_price_plain' ), 10, 3 );
			}

			/* compatibility with WooCommerce Min/Max Quantities */
			if ( function_exists( 'YITH_WMMQ' ) ) {
				add_filter( 'ywraq_quantity_input_value', array( $this, 'ywraq_quantity_input_value' ), 10 );
				add_filter( 'ywraq_quantity_max_value', array( YITH_WMMQ(), 'ywmmq_max_quantity_block' ), 10, 2 );
				add_filter( 'ywraq_quantity_min_value', array( YITH_WMMQ(), 'ywmmq_min_quantity_block' ), 10, 2 );
				add_filter( 'ywraq_quantity_step_value', array( YITH_WMMQ(), 'ywmmq_step_quantity_block' ), 10, 2 );
			}

			if ( class_exists( 'Woo_Advanced_QTY_Public' ) ) {
				add_filter( 'ywraq_quantity_input_value', array( $this, 'ywraq_quantity_input_value' ), 10 );
				add_filter( 'woocommerce_quantity_input_args', array( $this, 'woocommerce_quantity_input_args' ), 200 );
			}


			if ( class_exists( 'Woo_Advanced_QTY_Public' ) ) {
				add_filter( 'ywraq_quantity_input_value', array( $this, 'ywraq_quantity_input_value' ), 10 );
				add_filter( 'woocommerce_quantity_input_args', array( $this, 'woocommerce_quantity_input_args' ), 200 );
			}

			if ( defined( 'ELEMENTOR_VERSION' ) ) {
				require_once YITH_YWRAQ_INC . '/compatibility/elementor/class.yith-request-quote-elementor.php';
			}

		}


		/**
		 * Check if the plugin is working on administrator panel.
		 *
		 * @return bool
		 * @since  2.0
		 * @author Emanuela Castorina <emanuela.castorina@yithemes.com>
		 */
		public function is_admin() {
			$is_frontend_call   = isset( $_REQUEST['context'] ) && 'frontend' === $_REQUEST['context']; //phpcs:ignore WordPress.Security.NonceVerification.Recommended
			$is_frontend_action = isset( $_REQUEST['action'] ) && in_array( //phpcs:ignore WordPress.Security.NonceVerification.Recommended
					$_REQUEST['action'], //phpcs:ignore WordPress.Security.NonceVerification.Recommended
					apply_filters(
						'yith_ywraq_frontend_action_list',
						array(
							'flatsome_quickview',
							'ux_quickview',
							'product_popup_content',
							'jeet_shop_loadmore',
							'Yith_wc_qof_Ajax_Front_change_variation',
							'furnicom_quickviewproduct',
							'wcpt_get_product_form_modal',
							'piko_quickview',
							'wpb_wl_quickview',
						)
					),
					true
				);

			$is_admin = is_admin() && ! ( defined( 'DOING_AJAX' ) && DOING_AJAX && ( $is_frontend_call || $is_frontend_action ) );

			if ( ! $is_admin && 'yes' === get_option( 'ywraq_automate_send_quote', 'no' ) && '0' === get_option( 'ywraq_cron_time' ) ) {
				$is_admin = ( isset( $_REQUEST['context'] ) && 'frontend' === $_REQUEST['context'] ) && ( isset( $_REQUEST['wc-ajax'] ) && 'ywraq_submit_default_form' === $_REQUEST['wc-ajax'] ); //phpcs:ignore WordPress.Security.NonceVerification.Recommended
			}

			return apply_filters( 'ywraq_is_admin', $is_admin );
		}

		/**
		 * Initialize session and cookies
		 *
		 * @since  1.0.0
		 * @author Emanuela Castorina
		 */
		public function start_session() {

			if ( ! isset( $_COOKIE['woocommerce_items_in_cart'] ) && ( ( isset( $_POST['ywraq_action'] ) && 'add_item' === $_POST['ywraq_action'] ) ) || isset( $_REQUEST['add-to-quote'] ) ) { //phpcs:ignore
				do_action( 'woocommerce_set_cart_cookies', true );
			}

			$cookie = ywraq_get_cookie_name() . '_' . COOKIEHASH;

			if ( ( isset( $_POST['ywraq_action'] ) && 'add_item' === $_POST['ywraq_action'] ) || isset( $_COOKIE[ $cookie ] ) || isset( $_REQUEST['add-to-quote'] ) || apply_filters( 'ywraq_force_start_session', false ) ) { //phpcs:ignore
				$this->session_class = new YITH_YWRAQ_Session();
				$this->set_session();
			}
		}

		/**
		 * Initialize functions
		 *
		 * @since  1.0.0
		 * @author Emanuela Castorina
		 */
		public function init() {
			$this->get_raq_for_session();
			$this->session_class && $this->session_class->set_customer_session_cookie( true );
			$this->raq_variations = $this->get_variations_list();
		}

		/**
		 * Load YIT Plugin Framework
		 *
		 * @return void
		 * @since  1.0.0
		 * @author Andrea Grillo <andrea.grillo@yithemes.com>
		 */
		public function plugin_fw_loader() {
			if ( ! defined( 'YIT_CORE_PLUGIN' ) ) {
				global $plugin_fw_data;
				if ( ! empty( $plugin_fw_data ) ) {
					$plugin_fw_file = array_shift( $plugin_fw_data );
					require_once( $plugin_fw_file );
				}
			}
		}

		/**
		 * Get request quote list
		 *
		 * @return array
		 * @since  1.0.0
		 * @author Emanuela Castorina
		 */
		public function get_raq_return() {
			return $this->raq_content;
		}

		/**
		 * Get request quote list
		 *
		 * @return array
		 * @since  1.0.0
		 * @author Emanuela Castorina
		 */
		public function get_variations_list() {
			$variations = array();
			if ( ! empty( $this->raq_content ) ) {
				foreach ( $this->raq_content as $item ) {
					if ( isset( $item['variation_id'] ) && 0 !== $item['variation_id'] ) {
						$variations[] = $item['variation_id'];
					}
				}
			}

			return $variations;
		}

		/**
		 * Get all errors in HTML mode or simple string.
		 *
		 * @param array $errors .
		 * @param bool  $html   .
		 *
		 * @return string
		 * @since 1.0.0
		 */
		public function get_errors( $errors, $html = true ) {
			return implode( ( $html ? '<br />' : ', ' ), $errors );
		}

		/**
		 * Check if Empty
		 *
		 * @return bool true if empty.
		 * @since  1.0.0
		 * @author Emanuela Castorina
		 */
		public function is_empty() {
			return empty( $this->raq_content );
		}

		/**
		 * Get Raq item number
		 *
		 * @return bool
		 * @since  1.0.0
		 * @author Emanuela Castorina
		 */
		public function get_raq_item_number() {
			// APPLY_FILTER: ywraq_number_items_count: filter the number of items in the list.
			return apply_filters( 'ywraq_number_items_count', count( $this->raq_content ), $this->raq_content );
		}

		/**
		 * Get request quote list from session
		 *
		 * @return array
		 * @since  1.0.0
		 * @author Emanuela Castorina
		 */
		public function get_raq_for_session() {
			if ( $this->session_class ) {
				$this->raq_content = $this->session_class->get( 'raq', array() );
			}

			return $this->raq_content;
		}

		/**
		 * Sets the php session data for the request a quote
		 *
		 * @param array $raq_session  .
		 * @param bool  $can_be_empty .
		 *
		 * @since  1.0.0
		 *
		 * @author Emanuela Castorina
		 */
		public function set_session( $raq_session = array(), $can_be_empty = false ) {
			if ( empty( $raq_session ) && ! $can_be_empty ) {
				$raq_session = $this->get_raq_for_session();
			}

			// Set raq  session data.
			if ( $this->session_class ) {
				$this->session_class->set( 'raq', $raq_session );
			}
			do_action( 'yith_raq_updated' );
		}

		/**
		 * Unset the session
		 *
		 * @return void
		 * @since  1.0.0
		 * @author Emanuela Castorina
		 */
		public function unset_session() {
			// Set raq and coupon session data.
			$this->session_class->__unset( 'raq' );
		}

		/**
		 * Set Request a quote cookie
		 *
		 * @return void
		 * @since  1.0.0
		 * @author Emanuela Castorina
		 */
		public function maybe_set_raq_cookies() {
			$set = true;

			if ( ! headers_sent() ) {
				if ( count( $this->raq_content ) > 0 ) {
					$this->set_rqa_cookies( true );
					$set = true;
				} elseif ( isset( $_COOKIE[ ywraq_get_cookie_name( 'items' ) ] ) ) {
					$this->set_rqa_cookies( false );
					$set = false;
				}
			}

			do_action( 'yith_ywraq_set_raq_cookies', $set );
		}

		/**
		 * Set hash cookie and items in raq.
		 *
		 * @param bool $set .
		 *
		 * @since  1.0.0
		 * @access private
		 *
		 * @author Emanuela Castorina
		 */
		private function set_rqa_cookies( $set = true ) {
			$items_name = ywraq_get_cookie_name( 'items' );
			$hash_name  = ywraq_get_cookie_name( 'hash' );
			if ( $set ) {
				wc_setcookie( $items_name, 1 );
				wc_setcookie( $hash_name, md5( wp_json_encode( $this->raq_content ) ) );
			} elseif ( isset( $_COOKIE[ $items_name ] ) ) {
				wc_setcookie( $items_name, 0, time() - HOUR_IN_SECONDS );
				wc_setcookie( $hash_name, '', time() - HOUR_IN_SECONDS );
			}
			do_action( 'yith_ywraq_set_rqa_cookies', $set );
		}

		/**
		 * Check if the product is in the list
		 *
		 * @param int  $product_id   .
		 * @param bool $variation_id .
		 * @param bool $postadata    .
		 *
		 * @return mixed|void
		 */
		public function exists( $product_id, $variation_id = false, $postadata = false ) {

			$return = false;

			if ( $variation_id ) {
				// variation product.
				$key_to_find = md5( $product_id . $variation_id );
			} else {
				$key_to_find = md5( $product_id );
			}

			if ( array_key_exists( $key_to_find, $this->raq_content ) ) {
				$this->errors[] = __( 'Product already in the list.', 'yith-woocommerce-request-a-quote' );
				$return         = true;
			}

			return apply_filters( 'ywraq_exists_in_list', $return, $product_id, $variation_id, $postadata, $this->raq_content );
		}

		/**
		 * Add an item to request quote list
		 *
		 * @param array $product_raq .
		 *
		 * @return string
		 */
		public function add_item( $product_raq ) {

			$return = '';


			if ( ! ( isset( $product_raq['variation_id'] ) && '' !== $product_raq['variation_id'] ) ) {

				$product = wc_get_product( $product_raq['product_id'] );

				// grouped.
				if ( $product->is_type( 'grouped' ) ) {
					if ( is_array( $product_raq['quantity'] ) ) {

						foreach ( $product_raq['quantity'] as $item_id => $quantity ) {
							if ( ! $this->exists( $item_id ) &&  !empty( $quantity ) ) {
								$raq = array(
									'product_id' => $item_id,
									'quantity'   => $quantity,
								);

								$raq = apply_filters( 'ywraq_add_item', $raq, $product_raq );

								$this->raq_content[ apply_filters( 'ywraq_quote_item_id', md5( $item_id ), $product_raq ) ] = $raq;
							}
						}
					}
				} else {
					// single product.
					if ( ! $this->exists( $product_raq['product_id'] ) ) {

						$product_raq['quantity'] = ( isset( $product_raq['quantity'] ) ) ? $product_raq['quantity'] : 1;

						$raq = array(
							'product_id' => $product_raq['product_id'],
							'quantity'   => $product_raq['quantity'],
						);

						$raq = apply_filters( 'ywraq_add_item', $raq, $product_raq );

						$this->raq_content[ apply_filters( 'ywraq_quote_item_id', md5( $product_raq['product_id'] ), $product_raq ) ] = $raq;

					} else {
						$return = 'exists';
					}
				}
			} else {

				// variable product.
				if ( ! $this->exists( $product_raq['product_id'], $product_raq['variation_id'] ) ) {


					$product_raq['quantity'] = ( isset( $product_raq['quantity'] ) ) ? $product_raq['quantity'] : 1;

					$raq = array(
						'product_id'   => $product_raq['product_id'],
						'variation_id' => $product_raq['variation_id'],
						'quantity'     => $product_raq['quantity'],
					);

					$raq = apply_filters( 'ywraq_add_item', $raq, $product_raq );

					$variations = array();

					foreach ( $product_raq as $key => $value ) {

						if ( stripos( $key, 'attribute' ) !== false ) {
							$variations[ $key ] = urldecode( $value );
						}
					}

					$raq ['variations'] = $variations;

					$this->raq_content[ apply_filters( 'ywraq_quote_item_id', md5( $product_raq['product_id'] . $product_raq['variation_id'] ), $product_raq ) ] = $raq;

				} else {
					$return = 'exists';
				}
			}

			if ( 'exists' !== $return ) {

				$this->raq_content = apply_filters( 'ywraq_raq_content_before_add_item', $this->raq_content, $product_raq, $raq );
				$this->set_session( $this->raq_content );
				$return = 'true';
				$this->set_rqa_cookies( count( $this->raq_content ) > 0 );
			}

			return $return;

		}

		/**
		 * Remove an item form the request list
		 *
		 * @param string $key .
		 *
		 * @return bool
		 */
		public function remove_item( $key ) {
			if ( isset( $this->raq_content[ $key ] ) ) {
				/* SOLD INDIVIDUALLY SUPPORT */
				if ( isset( $this->raq_content[ $key ]['yith_wapo_parent'] ) ) {
					$product_id = $this->raq_content[ $key ]['product_id'];
					foreach ( $this->raq_content as $_key => $item ) {
						if ( $item['product_id'] === $product_id ) {
							unset( $this->raq_content[ $_key ] );
						}
					}
				} else {
					unset( $this->raq_content[ $key ] );
				}
				$this->set_session( $this->raq_content, true );
				$this->raq_variations = $this->get_variations_list();

				return true;
			} else {
				return false;
			}
		}

		/**
		 * Clear the list
		 */
		public function clear_raq_list() {
			$this->raq_content = array();
			$this->set_session( $this->raq_content, true );
		}

		/**
		 * Update an item in the raq list
		 *
		 * @param string $key   .
		 * @param bool   $field .
		 * @param string $value .
		 *
		 * @return bool
		 */
		public function update_item( $key, $field = false, $value ) {

			if ( $field && isset( $this->raq_content[ $key ][ $field ] ) ) {
				$this->raq_content[ $key ][ $field ] = $value;
				$this->set_session( $this->raq_content );

			} elseif ( isset( $this->raq_content[ $key ] ) ) {
				$this->raq_content[ $key ] = $value;
				$this->set_session( $this->raq_content );
			} else {
				return false;
			}

			$this->set_session( $this->raq_content );

			return true;
		}

		/**
		 * Switch a ajax call
		 */
		public function ajax() {
			if ( isset( $_POST['ywraq_action'] ) ) {//phpcs:ignore WordPress.Security.NonceVerification.Missing
				if ( method_exists( $this, 'ajax_' . sanitize_text_field( wp_unslash( $_POST['ywraq_action'] ) ) ) ) {//phpcs:ignore WordPress.Security.NonceVerification.Missing
					$s = 'ajax_' . sanitize_text_field( wp_unslash( $_POST['ywraq_action'] ) );                       //phpcs:ignore WordPress.Security.NonceVerification.Missing
					$this->$s();
				}
			}
		}

		public function ajax_clean_quote(  ) {
			YITH_Request_Quote()->clear_raq_list();
			wp_send_json(
				array( 'response' => do_shortcode('[yith_ywraq_request_quote]'))
			);
		}

		/**
		 * Add an item to request quote list in ajax mode
		 *
		 * @return void
		 * @since  1.0.0
		 */
		public function ajax_add_item() {

			$return             = 'false';
			$message            = '';
			$errors             = array();
			$product_id         = ( isset( $_POST['product_id'] ) && is_numeric( $_POST['product_id'] ) ) ? (int) $_POST['product_id'] : false;          //phpcs:ignore WordPress.Security.NonceVerification.Missing
			$is_valid_variation = ( isset( $_POST['variation_id'] ) && ! empty( $_POST['variation_id'] ) ) ? is_numeric( $_POST['variation_id'] ) : true;//phpcs:ignore WordPress.Security.NonceVerification.Missing

			$wapo_valid = apply_filters( 'ywraq_ajax_validate_uploaded_files', array() );

			if ( ! empty( $wapo_valid ) ) {
				wp_send_json(
					apply_filters(
						'yith_ywraq_ajax_add_item_json',
						array(
							'result'  => 'false',
							'message' => implode( '<br>', $wapo_valid ),
						)
					)
				);
				exit;
			}

			$is_valid = apply_filters( 'ywraq_ajax_add_item_is_valid', $product_id && $is_valid_variation, $product_id );

			$postdata = $_POST;//phpcs:ignore WordPress.Security.NonceVerification.Missing

			$postdata = apply_filters( 'ywraq_ajax_add_item_prepare', $postdata, $product_id );


			if ( ! $is_valid ) {
				$errors[] = __( 'Error occurred while adding product to Request a Quote list.', 'yith-woocommerce-request-a-quote' );
			} else {
				$return = $this->add_item( $postdata );
			}

			if ( 'true' === $return ) {
				$message = ywraq_get_label( 'product_added' );
			} elseif ( 'exists' === $return ) {
				$message = ywraq_get_label( 'already_in_quote' );
			} elseif ( count( $errors ) > 0 ) {
				$message = apply_filters( 'yith_ywraq_error_adding_to_list_message', $this->get_errors( $errors ) );
			}

			wp_send_json(
				apply_filters(
					'yith_ywraq_ajax_add_item_json',
					array(
						'result'     => $return,
						'message'    => $message,
						'rqa_url'    => $this->get_raq_page_url(),
						'variations' => implode( ',', $this->get_variations_list() ),
					)
				)
			);
		}

		/**
		 * Add an item in the list from query string
		 * for example ?add-to-quote=%product_id%&quantity=%quantity%
		 */
		public function add_to_quote_action() {

			if ( empty( $_REQUEST['add-to-quote'] ) ) {//phpcs:ignore WordPress.Security.NonceVerification.Recommended
				return;
			}

			$product_id      = apply_filters( 'woocommerce_add_to_quote_product_id', absint( $_REQUEST['add-to-quote'] ) );//phpcs:ignore WordPress.Security.NonceVerification.Recommended
			$variation_id    = empty( $_REQUEST['variation_id'] ) ? '' : absint( wp_unslash( $_REQUEST['variation_id'] ) );//phpcs:ignore WordPress.Security.NonceVerification.Recommended
			$adding_to_quote = wc_get_product( $product_id );

			if ( ! $adding_to_quote ) {
				return;
			}

			$quantity = empty( intval( wp_unslash( $_REQUEST['quantity'] ) ) ) ? 1 : wc_stock_amount( intval( wp_unslash( $_REQUEST['quantity'] ) ) );//phpcs:ignore WordPress.Security.NonceVerification.Recommended
			$raq_data = array();

			if ( $adding_to_quote->is_type( 'variable' ) && $variation_id ) {

				$variation  = wc_get_product( $variation_id );
				$attributes = $variation->get_attributes();

				if ( ! empty( $attributes ) ) {
					foreach ( $attributes as $name => $value ) {
						$raq_data[ 'attribute_' . $name ] = $value;
					}
				}
			}

			$raq_data = array_merge(
				array(
					'product_id'   => $product_id,
					'variation_id' => $variation_id,
					'quantity'     => $quantity,
				),
				$raq_data
			);
			$return   = $this->add_item( $raq_data );

			if ( 'true' === $return ) {
				$message = ywraq_get_label( 'product_added' );
				wc_add_notice( $message, 'success' );
				do_action( 'ywraq_added_to_quote_by_url' );
			} elseif ( 'exists' === $return ) {
				$message = ywraq_get_label( 'already_in_quote' );
				wc_add_notice( $message, 'notice' );
			}

		}

		/**
		 * Remove an item from the list in ajax mode
		 *
		 * @since  1.0.0
		 */
		public function ajax_remove_item() {
			$product_id = ( isset( $_POST['product_id'] ) && is_numeric( $_POST['product_id'] ) ) ? (int) $_POST['product_id'] : false;//phpcs:ignore WordPress.Security.NonceVerification.Missing
			$is_valid   = $product_id && isset( $_POST['key'] );                                                                       //phpcs:ignore WordPress.Security.NonceVerification.Missing
			if ( $is_valid ) {
				echo esc_attr( $this->remove_item( sanitize_key( wp_unslash( $_POST['key'] ) ) ) ); //phpcs:ignore WordPress.Security.NonceVerification.Missing
			} else {
				echo false;
			}
			die();
		}

		/**
		 * Remove an item from the list in ajax mode
		 *
		 * @since  1.0.0
		 */
		public function ajax_update_item_quantity() {
			$result   = array();
			$is_valid = isset( $_POST['key'] ) && isset( $_POST['quantity'] ); //phpcs:ignore WordPress.Security.NonceVerification.Missing
			if ( $is_valid ) {
				$quantity   = preg_replace( '/[^0-9\.]/', '', $_POST['quantity'] );
				$updates    = $this->update_item_quantity( sanitize_key( $_POST['key'] ), $quantity ); //phpcs:ignore WordPress.Security.NonceVerification.Missing
			}

			wp_send_json( $updates );
		}

		/**
		 * Remove an item from the list in ajax mode
		 *
		 * @param string $key      .
		 * @param int    $quantity .
		 *
		 * @return string
		 * @since  1.0.0
		 */
		public function update_item_quantity( $key, $quantity ) {

			$min = $max = $quantity;

			if ( isset( $this->raq_content[ $key ] ) ) {

				if ( function_exists( 'YITH_WMMQ' ) ) {
					$product_id = ( ! empty( $this->raq_content[ $key ]['variation_id'] ) && $this->raq_content[ $key ]['variation_id'] > 0 ) ? $this->raq_content[ $key ]['variation_id'] : $this->raq_content[ $key ]['product_id'];
					$_product   = wc_get_product( $product_id );
					$max        = apply_filters( 'ywraq_quantity_max_value', $_product->backorders_allowed() ? '' : $_product->get_stock_quantity(), $_product );
					$min        = apply_filters( 'ywraq_quantity_min_value', 0, $_product );
				}

				$quantity = ( $quantity <= $min ) ? $min : $quantity;
				$quantity = ( '' !== (string) $max && $quantity >= $max ) ? $max : $quantity;

				$this->raq_content[ $key ]['quantity'] = $quantity;

				$this->set_session( $this->raq_content, true );

				return true;

			}

			return false;
		}

		/**
		 * Check if an element exist the list in ajax mode
		 *
		 * @return void
		 * @since  1.0.0
		 */
		public function ajax_variation_exist() {
			if ( isset( $_POST['product_id'] ) && isset( $_POST['variation_id'] ) ) { //phpcs:ignore WordPress.Security.NonceVerification.Missing

				$message       = '';
				$label_browser = '';
				$product_id    = ( '' !== $_POST['variation_id'] ) ? intval( wp_unslash( $_POST['variation_id'] ) ) : intval( wp_unslash( $_POST['product_id'] ) ); //phpcs:ignore WordPress.Security.NonceVerification.Missing
				$product       = wc_get_product( $product_id );

				$posted = $_POST; //phpcs:ignore WordPress.Security.NonceVerification.Missing

				if ( ( ! YITH_Request_Quote_Premium()->check_user_type() || ( ywraq_show_btn_only_out_of_stock() && $product->is_in_stock() ) ) ) {
					$message = apply_filters( 'yith_ywraq_product_not_quoted', __( 'This product is not quotable.', 'yith-woocommerce-request-a-quote' ) );
				} elseif ( $this->exists( $posted['product_id'], $posted['variation_id'], $posted ) === 'true' ) {
					$message       = ywraq_get_label( 'already_in_quote' );
					$label_browser = ywraq_get_label( 'browse_list' );
				}

				$return = ( '' !== $message );

				wp_send_json(
					array(
						'result'       => $return,
						'message'      => $message,
						'label_browse' => $label_browser,
						'rqa_url'      => $this->get_raq_page_url(),
					)
				);
			}
		}

		/**
		 * Return the url of request quote page
		 *
		 * @return string
		 * @since 1.0.0
		 */
		public function get_raq_page_url() {
			$option_value = get_option( 'ywraq_page_id' );

			if ( function_exists( 'wpml_object_id_filter' ) ) {
				global $sitepress;

				if ( ! is_null( $sitepress ) && is_callable( array( $sitepress, 'get_current_language' ) ) ) {
					$option_value = wpml_object_id_filter( $option_value, 'post', true, $sitepress->get_current_language() );
				}
			}

			$base_url = get_the_permalink( $option_value );

			return apply_filters( 'ywraq_request_page_url', $base_url );
		}

		/**
		 * Return the id of request quote page
		 *
		 * @return int
		 * @since 1.9.0
		 */
		public function get_raq_page_id() {
			$page_id = get_option( 'ywraq_page_id' );

			if ( function_exists( 'wpml_object_id_filter' ) ) {
				global $sitepress;

				if ( ! is_null( $sitepress ) && is_callable( array( $sitepress, 'get_current_language' ) ) ) {
					$page_id = wpml_object_id_filter( $page_id, 'post', true, $sitepress->get_current_language() );
				}
			}

			return apply_filters( 'ywraq_request_page_id', $page_id );
		}

		/**
		 * Locate default templates of WooCommerce in plugin, if exists.
		 *
		 * @param string $core_file     .
		 * @param string $template      .
		 * @param string $template_base .
		 *
		 * @return string
		 * @since  1.0.0
		 * @deprecated
		 */
		public function filter_woocommerce_template( $core_file, $template, $template_base ) {
			$located = yith_ywraq_locate_template( $template );

			if ( $located ) {
				return $located;
			} else {
				return $core_file;
			}
		}

		/**
		 * Get all errors in HTML mode or simple string.
		 *
		 * @return void
		 * @since 1.0.0
		 */
		public function send_message() {

			if ( ! isset( $_REQUEST['raq_mail_wpnonce'] ) ) { //phpcs:ignore WordPress.Security.NonceVerification.Recommended
				return;
			}

			$errors                  = array();
			$user_additional_field   = '';
			$user_additional_field_2 = '';
			$user_additional_field_3 = '';
			$attachment              = array();
			if ( isset( $_POST['raq_mail_wpnonce'] ) ) { //phpcs:ignore WordPress.Security.NonceVerification.Missing

				$posted_raq = wp_unslash( $_POST ); //phpcs:ignore WordPress.Security.NonceVerification.Missing

				if ( empty( $posted_raq['rqa_name'] ) ) {//phpcs:ignore WordPress.Security.NonceVerification.Missing
					$errors[] = '<p>' . esc_html__( 'Please enter a name', 'yith-woocommerce-request-a-quote' ) . '</p>';
				}

				if ( ! isset( $posted_raq['rqa_email'] ) || empty( $posted_raq['rqa_email'] ) || ! is_email( $posted_raq['rqa_email'] ) ) {
					$errors[] = '<p>' . esc_html__( 'Please enter a valid email', 'yith-woocommerce-request-a-quote' ) . '</p>';
				}

				if ( ! empty( $posted_raq['rqa_name'] ) && ! empty( $posted_raq['rqa_email'] ) && isset( $posted_raq['createaccount'] ) && email_exists( $posted_raq['rqa_email'] ) ) {//phpcs:ignore WordPress.Security.NonceVerification.Missing
					$errors[] = '<p>' . esc_html__( 'An account is already registered with your email address. Please login.', 'yith-woocommerce-request-a-quote' ) . '</p>';
				}

				if ( 'yes' === get_option( 'ywraq_additional_text_field' ) && 'yes' === get_option( 'ywraq_additional_text_field_required' ) && isset( $posted_raq['rqa_text_field'] ) && empty( $posted_raq['rqa_text_field'] ) ) {//phpcs:ignore WordPress.Security.NonceVerification.Missing
					$errors[] = '<p>' . sprintf( esc_html__( 'Please enter a value for %s', 'yith-woocommerce-request-a-quote' ), get_option( 'ywraq_additional_text_field_label' ) ) . '</p>';
				} else {
					$user_additional_field = isset( $posted_raq['rqa_text_field'] ) ? $posted_raq['rqa_text_field'] : '';
				}

				if ( 'yes' === get_option( 'ywraq_additional_text_field_2' ) && 'yes' === get_option( 'ywraq_additional_text_field_required_2' ) && isset( $posted_raq['rqa_text_field_2'] ) && empty( $posted_raq['rqa_text_field_2'] ) ) {//phpcs:ignore WordPress.Security.NonceVerification.Missing
					$errors[] = '<p>' . sprintf( esc_html__( 'Please enter a value for %s', 'yith-woocommerce-request-a-quote' ), get_option( 'ywraq_additional_text_field_label_2' ) ) . '</p>';
				} else {
					$user_additional_field_2 = isset( $posted_raq['rqa_text_field_2'] ) ? $posted_raq['rqa_text_field_2'] : '';
				}

				if ( 'yes' === get_option( 'ywraq_additional_text_field_3' ) && 'yes' === get_option( 'ywraq_additional_text_field_required_3' ) && isset( $posted_raq['rqa_text_field_3'] ) && empty( $posted_raq['rqa_text_field_3'] ) ) {//phpcs:ignore WordPress.Security.NonceVerification.Missing
					$errors[] = '<p>' . sprintf( esc_html__( 'Please enter a value for %s', 'yith-woocommerce-request-a-quote' ), get_option( 'ywraq_additional_text_field_label_3' ) ) . '</p>';
				} else {
					$user_additional_field_3 = isset( $posted_raq['rqa_text_field_3'] ) ? $posted_raq['rqa_text_field_3'] : '';
				}


				if ( ywraq_check_recaptcha_options() ) {
					$captcha_error_string = sprintf( '<p>%s</p>', __( 'Please check the the captcha form.', 'yith-woocommerce-request-a-quote' ) );
					if ( isset( $posted_raq['g-recaptcha-response'] ) ) {//phpcs:ignore WordPress.Security.NonceVerification.Missing
						$captcha = $posted_raq['g-recaptcha-response'];  //phpcs:ignore WordPress.Security.NonceVerification.Missing
					}
					if ( ! $captcha ) {
						$errors[] = $captcha_error_string;
					} else {
						$secret_key = get_option( 'ywraq_reCAPTCHA_secretkey' );
						$response   = wp_remote_get( 'https://www.google.com/recaptcha/api/siteverify?secret=' . $secret_key . '&response=' . $captcha );
						if ( is_wp_error( $response ) || ! isset( $response['body'] ) ) {
							$errors[] = $captcha_error_string;
						} else {
							$response_keys = json_decode( $response['body'], true );
							if ( intval( $response_keys['success'] ) !== 1 ) {
								$errors[] = $captcha_error_string;
							}
						}
					}
				}

				if ( 'yes' === get_option( 'ywraq_additional_upload_field' ) && ! empty( $_FILES['rqa_upload_field']['name'] ) ) {

					if ( ! function_exists( 'wp_handle_upload' ) ) {
						require_once ABSPATH . 'wp-admin/includes/file.php';
					}

					$uploadedfile     = $_FILES['rqa_upload_field'];//phpcs:ignore
					$upload_overrides = array( 'test_form' => false );
					$movefile         = wp_handle_upload( $uploadedfile, $upload_overrides );

					if ( $movefile && ! isset( $movefile['error'] ) ) {
						$attachment = $movefile;
					} else {
						$errors[] = '<p>' . $movefile['error'] . '</p>';
					}
				}


				if ( YITH_Request_Quote()->is_empty() ) {
					$errors[] = ywraq_get_list_empty_message();
				}

				$errors = apply_filters( 'ywraq_request_validate_fields', $errors, $_POST ); //phpcs:ignore WordPress.Security.NonceVerification.Missing

				if ( empty( $errors ) ) {
					$args = array(
						'user_name'               => $posted_raq['rqa_name'],
						'user_email'              => $posted_raq['rqa_email'],
						'user_password'           => isset( $posted_raq['rqa_password'] ) ? $posted_raq['rqa_password'] : '',
						'user_message'            => nl2br( $posted_raq['rqa_message'] ),
						'user_additional_field'   => $user_additional_field,
						'user_additional_field_2' => $user_additional_field_2,
						'user_additional_field_3' => $user_additional_field_3,
						'attachment'              => $attachment,
						'raq_content'             => YITH_Request_Quote()->get_raq_return(),
					);

					$current_customer_id = 0;

					if ( is_user_logged_in() ) {
						$current_customer_id = get_current_user_id();
					} elseif ( $current_customer = get_user_by( 'email', $posted_raq['rqa_email'] ) ) {
						$current_customer_id = $current_customer->ID;
					} elseif ( isset( $_POST['createaccount'] ) || apply_filters( 'ywraq_force_create_account', false ) ) { //phpcs:ignore WordPress.Security.NonceVerification.Missing
						if ( username_exists( $args['user_name'] ) ) {
							$user_login = $this->get_username( $args['user_name'], $args['user_email'] );
						} else {
							$user_login = $args['user_name'];
						}
						$current_customer_id = $this->add_user( $user_login, $args['user_email'], $args['user_password'] );
						wp_set_auth_cookie( $current_customer_id, true );
					}

					$args['customer_id'] = $current_customer_id;

					if ( isset( $_REQUEST['lang'] ) ) {                                 //phpcs:ignore WordPress.Security.NonceVerification.Recommended
						$args['lang'] = sanitize_key( wp_unslash( $_REQUEST['lang'] ) );//phpcs:ignore WordPress.Security.NonceVerification.Recommended
					}

					if ( 'yes' === get_option( 'ywraq_enable_order_creation', 'yes' ) ) {
						do_action( 'ywraq_process', $args );
					}

					do_action( 'send_raq_mail', $args );
					do_action( 'send_raq_customer_mail', $args );

					wp_safe_redirect( $this->get_redirect_page_url(), 301 );

					exit();
				}
			} else {
				$errors[] = '<p>' . __( 'There was a problem sending your request. Please try again.', 'yith-woocommerce-request-a-quote' ) . '</p>';
			}

			yith_ywraq_add_notice( $this->get_errors( $errors ), 'error' );
		}

		/**
		 *
		 * Check if set a Thank you page
		 *
		 * @return bool|string
		 */
		public function has_thank_you_page() {

			if ( get_option( 'ywraq_how_show_after_sent_the_request', 'simple_message' ) !== 'thank_you_page' ) {
				return false;
			}

			return ( get_option( 'ywraq_thank_you_page' ) ) ? get_permalink( get_option( 'ywraq_thank_you_page' ) ) : false;
		}

		/**
		 * Return the username of user
		 *
		 * @param $hyb_user_login
		 * @param $hyb_user_email
		 *
		 * @return string
		 * @since  1.0.0
		 *
		 * @author Emanuela Castorina <emanuela.castorina@yithemes.com>
		 */
		public function get_username( $hyb_user_login, $hyb_user_email ) {
			$yith_user_login = $hyb_user_login;
			if ( ! empty( $hyb_user_login ) ) {
				if ( 'yes' === get_option( 'woocommerce_registration_generate_username' ) && ! empty( $hyb_user_email ) ) {
					$yith_user_login = sanitize_user( current( explode( '@', $hyb_user_email ) ) );
					if ( username_exists( $hyb_user_login ) ) {
						$append     = 1;
						$o_username = $yith_user_login;

						while ( username_exists( $yith_user_login ) ) {
							$yith_user_login = $o_username . $append;
							$append ++;
						}
					}
				}
			}

			return $yith_user_login;

		}

		/**
		 * Filters woocommerce available mails, to add wishlist related ones
		 *
		 * @param array $emails array .
		 *
		 * @return array
		 * @since 1.0
		 */
		public function add_woocommerce_emails( $emails ) {
			$emails['YITH_YWRAQ_Send_Email_Request_Quote'] = include YITH_YWRAQ_INC . 'emails/class.yith-ywraq-send-email-request-quote.php';

			return $emails;
		}

		/**
		 * Loads WC Mailer when needed
		 *
		 * @return void
		 * @since 1.0
		 */
		public function load_wc_mailer() {
			add_action( 'send_raq_mail', array( 'WC_Emails', 'send_transactional_email' ), 10 );
		}

		/**
		 * Add a new user
		 *
		 * @param string $username      .
		 * @param string $user_email    .
		 * @param string $user_password .
		 *
		 * @return string
		 * @since  1.0.0
		 *
		 * @author Emanuela Castorina <emanuela.castorina@yithemes.com>
		 */
		public function add_user( $username, $user_email, $user_password ) {

			$password = ( 'yes' === get_option( 'woocommerce_registration_generate_password' ) ) ? wp_generate_password() : $user_password;
			$args     = array(
				'user_login' => $username,
				'user_pass'  => $password,
				'user_email' => $user_email,
				'remember'   => false,
				'role'       => apply_filters( 'ywraq_new_user_role', 'customer' ),
			);

			$customer_id = wp_insert_user( $args );

			wp_signon( $args, false );

			do_action( 'woocommerce_created_customer', $customer_id, $args, $password );

			return $customer_id;
		}

		/**
		 * Update subtotal price for compatibility with WC_Subscriptions
		 *
		 * @param string     $subtotal .
		 * @param            $line_item
		 * @param WC_Product $product  .
		 *
		 * @return mixed
		 * @since  1.3.0
		 * @author Emanuela Castorina
		 */
		public function update_subtotal_item_price( $subtotal, $line_item, $product ) {
			if ( ! WC_Subscriptions_Product::is_subscription( $product->get_id() ) ) {
				return $subtotal;
			}
			$this->subtotal = $line_item;
			add_filter( 'woocommerce_subscriptions_product_price_string_inclusions', array( $this, 'update_price' ), 10, 2 );

			return $product->get_price_html();
		}

		/**
		 * Update price in plain email for compatibility with WC_Subscriptions
		 *
		 * @param            $subtotal
		 * @param            $line_item
		 * @param WC_Product $product .
		 *
		 * @return string
		 * @since  1.3.0
		 * @author Emanuela Castorina
		 */
		public function update_subtotal_item_price_plain( $subtotal, $line_item, $product ) {
			if ( ! WC_Subscriptions_Product::is_subscription( $product->get_id() ) ) {
				return $subtotal;
			}
			$this->subtotal = $line_item;

			add_filter( 'woocommerce_subscriptions_product_price_string_inclusions', array( $this, 'update_price' ), 10, 2 );

			return wc_price( $this->subtotal );
		}

		/**
		 * Update price for compatibility with WC_Subscriptions
		 *
		 * @param array      $include .
		 * @param WC_Product $product .
		 *
		 * @return mixed
		 * @since  1.3.0
		 * @author Emanuela Castorina
		 *
		 */
		public function update_price( $include, $product ) {
			$include['price'] = '<ins><span class="amount">' . wc_price( $this->subtotal ) . '</span></ins>';

			return $include;
		}

		/**
		 * Change the value of quantity input for compatibility with WooCommerce Min/Max Quantities
		 *
		 * @param array $args .
		 *
		 * @return mixed
		 * @since  1.3.0
		 * @author Emanuela Castorina
		 */
		public function woocommerce_quantity_input_args( $args ) {

			if ( isset( $this->quantity ) ) {
				$args['input_value'] = $this->quantity;
			}

			return $args;
		}

		/**
		 * Save the temp quantity in a param for compatibility with WooCommerce Min/Max Quantities
		 *
		 * @param int $quantity .
		 *
		 * @return mixed
		 * @since  1.3.0
		 * @author Emanuela Castorina
		 */
		public function ywraq_quantity_input_value( $quantity ) {
			$this->quantity = $quantity;

			return $quantity;
		}

		/**
		 * Check if the checkout is enabled after the acceptance of quote
		 *
		 * @return bool
		 */
		public function enabled_checkout() {
			// Todo:check with wpml.
			$show_accept_link = get_option( 'ywraq_show_accept_link', 'yes' );

			if ( 'no' === $show_accept_link ) {
				return false;
			}

			$accepted_page_id = $this->get_accepted_page();
			$checkout_page_id = get_option( 'woocommerce_checkout_page_id' );
			$cart_page_id     = get_option( 'woocommerce_cart_page_id' );

			if ( $accepted_page_id === $checkout_page_id || $accepted_page_id === $cart_page_id ) {
				return true;
			}

			return false;
		}

		/**
		 *
		 * Get id of the page for Accepted link
		 *
		 * @return int|mixed|void
		 */
		public function get_accepted_page() {
			global $sitepress;
			$has_wpml         = ! empty( $sitepress ) ? true : false;
			$accepted_page_id = get_option( 'ywraq_page_accepted' );
			if ( $has_wpml ) {
				$accepted_page_id = yit_wpml_object_id( $accepted_page_id, 'page', true );
			}

			return $accepted_page_id;
		}

		/**
		 * Get Redirect page URL
		 *
		 * @param array $attr .
		 *
		 * @return bool|false|string
		 */
		public function get_redirect_page_url( $attr = array() ) {
			$thank_you_page = $this->has_thank_you_page();
			if ( $thank_you_page ) {
				$redirect = $thank_you_page;
			} else {

				$thank_you_quote = get_option( 'ywraq_how_show_after_sent_the_request', 'simple_message' );
				if ( 'thank_you_quote' === $thank_you_quote && WC()->session ) {
					$raq_id = WC()->session->get( 'raq_new_order', false );

					if ( $raq_id ) {
						$url_args = array( 'quote_id' => $raq_id );
						$attr     = wp_parse_args( $attr, $url_args );
					}
				}
				$redirect = $this->get_raq_page_url();
			}

			if ( $attr ) {
				$redirect = add_query_arg( $attr, $redirect );
			}

			return $redirect;

		}

		/**
		 * Add quote to customer after registration
		 *
		 * @access public
		 *
		 * @param int    $customer_id        .
		 * @param mixed  $new_customer_data  .
		 * @param string $password_generated .
		 *
		 * @since  1.0.0
		 */
		public function add_quote_to_new_customer( $customer_id, $new_customer_data, $password_generated ) {
			// todo:wc27 check if customer user is available in db.
			if ( empty( $new_customer_data['user_email'] ) ) {
				return;
			}

			global $wpdb;
			// get ids.
			$query = "SELECT post_id FROM " . $wpdb->prefix . "postmeta WHERE meta_key = 'ywraq_customer_email' AND meta_value LIKE '%" . $new_customer_data['user_email'] . "%'";
			$ids   = $wpdb->get_col( $query );

			if ( empty( $ids ) ) {
				return;
			}

			foreach ( $ids as $id ) {
				update_post_meta( $id, '_customer_user', $customer_id );
			}
		}

		/**
		 * Add Endpoint to My Account
		 *
		 * @since  1.0.0
		 */
		public function add_my_account_endpoints() {
			if ( ! is_null( WC()->query ) ) {
				$view_quote                           = get_option( 'woocommerce_myaccount_view_quote_endpoint', 'view-quote' );
				WC()->query->query_vars['view-quote'] = $view_quote;
				add_rewrite_endpoint( $view_quote, EP_ROOT | EP_PAGES );
			}
		}

		/**
		 * Register plugins for activation tab
		 *
		 * @return void
		 * @since    1.0.0
		 * @author   Andrea Grillo <andrea.grillo@yithemes.com>
		 */
		public function register_plugin_for_activation() {
			if ( ! class_exists( 'YIT_Plugin_Licence' ) ) {
				require_once YITH_YWRAQ_DIR .'plugin-fw/lib/yit-plugin-licence.php';
			}
			YIT_Plugin_Licence()->register( YITH_YWRAQ_INIT, YITH_YWRAQ_SECRET_KEY, YITH_YWRAQ_SLUG );
		}

		/**
		 * Register plugins for update tab
		 *
		 * @return void
		 * @since    1.0.0
		 * @author   Andrea Grillo <andrea.grillo@yithemes.com>
		 */
		public function register_plugin_for_updates() {
			if ( ! class_exists( 'YIT_Upgrade' ) ) {
				require_once YITH_YWRAQ_DIR . 'plugin-fw/lib/yit-upgrade.php';
			}
			YIT_Upgrade()->register( YITH_YWRAQ_SLUG, YITH_YWRAQ_INIT );
		}

	}
}

/**
 * Unique access to instance of YITH_Request_Quote class
 *
 * @return \YITH_Request_Quote
 */
function YITH_Request_Quote() {
	return YITH_Request_Quote::get_instance();
}

