<?php
/**
Plugin Name: Multilanguage by BestWebSoft
Plugin URI: https://bestwebsoft.com/products/wordpress/plugins/multilanguage/
Description: Translate WordPress website content to other languages manually. Create multilingual pages, posts, widgets, menus, etc.
Author: BestWebSoft
Text Domain: multilanguage
Domain Path: /languages
Version: 1.5.0
Author URI: https://bestwebsoft.com/
License: GPLv3 or later
 */

/*
 © Copyright 2021  BestWebSoft  ( https://support.bestwebsoft.com )

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License, version 2, as
	published by the Free Software Foundation.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

$file_dir = dirname( __FILE__ );
require_once $file_dir . '/includes/table.php';
require_once $file_dir . '/includes/languages.php';

if ( ! function_exists( 'mltlngg_admin_menu' ) ) {
	/**
	 * Function add menu pages
	 */
	function mltlngg_admin_menu() {
		global $submenu, $mltlngg_plugin_info, $wp_version;

		$settings = add_menu_page( 'Multilanguage ' . esc_html__( 'Settings', 'multilanguage' ), 'Multilanguage', 'manage_options', 'mltlngg_settings', 'mltlngg_settings_page', 'none' );

		add_submenu_page( 'mltlngg_settings', 'Multilanguage ' . esc_html__( 'Settings', 'multilanguage' ), esc_html__( 'Settings', 'multilanguage' ), 'manage_options', 'mltlngg_settings', 'mltlngg_settings_page' );

		$languages = add_submenu_page( 'mltlngg_settings', 'Multilanguage ' . esc_html__( 'Languages', 'multilanguage' ), esc_html__( 'Languages', 'multilanguage' ), 'manage_options', 'multilanguage-languages.php', 'mltlngg_settings_page' );

		add_submenu_page( 'mltlngg_settings', 'BWS Panel', 'BWS Panel', 'manage_options', 'mltlngg-bws-panel', 'bws_add_menu_render' );
		/*pls */
		if ( isset( $submenu['mltlngg_settings'] ) ) {
			$submenu['mltlngg_settings'][] = array(
				'<span style="color:#d86463"> ' . esc_html__( 'Upgrade to Pro', 'multilanguage' ) . '</span>',
				'manage_options',
				'https://bestwebsoft.com/products/wordpress/plugins/multilanguage/?k=fa164f00821ed3a87e6f78cb3f5c277b&pn=143&v=' . $mltlngg_plugin_info['Version'] . '&wp_v=' . $wp_version,
			);
		}
		/* pls*/
		mltlngg_add_menu_items();

		add_action( 'load-' . $settings, 'mltlngg_add_tabs' );
		add_action( 'load-' . $languages, 'mltlngg_add_tabs' );
	}
}

if ( ! function_exists( 'mltlngg_init' ) ) {
	/**
	 * Plugin initialization in backend and frontend
	 */
	function mltlngg_init() {
		global $mltlngg_options, $mltlngg_plugin_info;

		require_once dirname( __FILE__ ) . '/bws_menu/bws_include.php';
		bws_include_init( plugin_basename( __FILE__ ) );

		if ( empty( $mltlngg_plugin_info ) ) {
			if ( ! function_exists( 'get_plugin_data' ) ) {
				require_once ABSPATH . 'wp-admin/includes/plugin.php';
			}
			$mltlngg_plugin_info = get_plugin_data( __FILE__ );
		}

		/* check WordPress version */
		bws_wp_min_version_check( plugin_basename( __FILE__ ), $mltlngg_plugin_info, '4.5' );

		mltlngg_register_settings();

		/* If there have been changes in the list of languages do flush_rewrite_rules */
		if ( isset( $mltlngg_options['flush_rewrite_rules'] ) && 1 === intval( $mltlngg_options['flush_rewrite_rules'] ) ) {
			flush_rewrite_rules();
			unset( $mltlngg_options['flush_rewrite_rules'] );
			update_option( 'mltlngg_options', $mltlngg_options );
		}
		if ( is_plugin_active( 'woocommerce/woocommerce.php' ) ) {
			/*Adding Woocommerce compatibility*/
			add_filter( 'woocommerce_ajax_get_endpoint', 'mltlngg_wcmmrc', 10, 2 );
		}
		mltlngg_add_meta_filters();

		$custom_forms       = array(
			'object'     => 'post',
			'post_types' => array( 'post', 'page' ),
		);
		$custom_forms       = apply_filters( 'mltlngg_custom_filter', $custom_forms );
		$mltlngg_taxonomies = get_object_taxonomies( $custom_forms['object'] );

		if ( is_array( $mltlngg_taxonomies ) ) {
			foreach ( $mltlngg_taxonomies as $mltlngg_taxonomy ) {
				add_action( $mltlngg_taxonomy . '_add_form_fields', 'mltlngg_new_terms_translate' );
				add_action( 'created_' . $mltlngg_taxonomy, 'mltlngg_new_terms_created' );
				add_action( $mltlngg_taxonomy . '_edit_form_fields', 'mltlngg_terms_translate' );
				add_action( 'edited_' . $mltlngg_taxonomy, 'mltlngg_terms_update' );
				add_action( 'delete_' . $mltlngg_taxonomy, 'mltlngg_delete_term' );

				/* Add language column in the taxonomy wp_list_table to display if language is translated */
				add_filter( 'manage_edit-' . $mltlngg_taxonomy . '_columns', 'mltlngg_add_term_column' );
				add_filter( 'manage_' . $mltlngg_taxonomy . '_custom_column', 'mltlngg_term_column', 10, 3 );
			}
		}
		/* Add language column in the post wp_list_table to display if language is translated */
		if ( is_array( $custom_forms['post_types'] ) ) {
			foreach ( $custom_forms['post_types'] as $post_type ) {
				add_filter( 'manage_edit-' . $post_type . '_columns', 'mltlngg_add_post_column' );
				add_filter( 'manage_' . $post_type . '_posts_custom_column', 'mltlngg_post_column', 10, 3 );
				add_action( 'rest_after_insert_' . $post_type, 'mltlngg_rest_after_insert_post', 10, 3 ); /* After rest-api apdate */
			}
		}
	}
}

if ( ! function_exists( 'mltlngg_wcmmrc' ) ) {
	/**
	 * Function delete language slug from woocommerce's ajax request
	 *
	 * @param bool   $ajax    Flag for ajax.
	 * @param string $request String for request.
	 * @return string $request
	 */
	function mltlngg_wcmmrc( $ajax, $request ) {
		$request = esc_url_raw( add_query_arg( 'wc-ajax', $request, remove_query_arg( array( 'remove_item', 'add-to-cart', 'added-to-cart' ), home_url( '/' ) ) ) );
		return $request;
	}
}

if ( ! function_exists( 'mltlngg_admin_init' ) ) {
	/**
	 * Plugin initialization in backend
	 */
	function mltlngg_admin_init() {
		global $pagenow, $bws_plugin_info, $mltlngg_plugin_info, $bws_shortcode_list, $mltlngg_options;

		if ( empty( $bws_plugin_info ) ) {
			$bws_plugin_info = array(
				'id'      => '143',
				'version' => $mltlngg_plugin_info['Version'],
			);
		}

		/* add Multilanguage to global $bws_shortcode_list */
		$bws_shortcode_list['mltlngg'] = array(
			'name'        => 'Multilanguage',
			'js_function' => 'mltlngg_shortcode_init',
		);

		/* add 'Multilanguage switcher' into the Menu */
		add_action( 'wp_update_nav_menu_item', 'mltlngg_wp_update_nav_menu_item', 10, 2 );
		add_meta_box( 'mltlngg_language_switcher_box', esc_html__( 'Multilanguage switcher', 'multilanguage' ), 'mltlngg_language_switcher_box', 'nav-menus', 'side', 'high' );
		if ( 'plugins.php' === $pagenow ) {
			if ( function_exists( 'bws_plugin_banner_go_pro' ) ) {
				bws_plugin_banner_go_pro( $mltlngg_options, $mltlngg_plugin_info, 'mltlngg', 'multilanguage', '0419dafcc237fe35489c8db63c899a38', '143', 'multilanguage' );
			}
		}
	}
}

if ( ! function_exists( 'mltlngg_current_screen' ) ) {
	/**
	 * Set cookie for gutenberg
	 */
	function mltlngg_current_screen() {
		global $mltlngg_current_language;
		if ( is_admin() ) {
			if ( mltlngg_is_gutenberg_active() ) {
				mltlngg_setcookie( $mltlngg_current_language );
			}
		}
	}
}

if ( ! function_exists( 'mltlngg_language_attributes' ) ) {
	/**
	 * Create language attributes for site
	 *
	 * @param string $output (Optional) String with lang attributes.
	 * @return string $output
	 */
	function mltlngg_language_attributes( $output = '' ) {
		global $mltlngg_current_language;
		if ( false !== strpos( $output, 'lang="' ) ) {
			$output_lang = trim( $output, 'lang="' );
			if ( $mltlngg_current_language !== $output_lang ) {
				$output = str_replace( 'lang="' . $output_lang . '"', 'lang="' . str_replace( '_', '-', $mltlngg_current_language ) . '"', $output );
			}
		}
		if ( false === strpos( $output, 'http://ogp.me/ns' ) ) {
			$prefix  = 'prefix="og: http://ogp.me/ns#"';
			$output .= "\n\t" . $prefix;
		}
		return $output;

	}
}

if ( ! function_exists( 'mltlngg_register_settings' ) ) {
	/**
	 * Default Plugin settings
	 */
	function mltlngg_register_settings() {
		global $mltlngg_plugin_info, $mltlngg_options, $wp_version;
		$db_version    = '0.3';
		$update_option = false;

		/* Add options to database */
		if ( ! get_option( 'mltlngg_options' ) ) {
			$options_default = mltlngg_get_options_default();
			add_option( 'mltlngg_options', $options_default );
		}

		if ( empty( $mltlngg_plugin_info ) ) {
			$file_dir = dirname( __FILE__ );
			if ( ! function_exists( 'get_plugin_data' ) ) {
				require_once( ABSPATH . 'wp-admin/includes/plugin.php' );
			}
			$mltlngg_plugin_info = get_plugin_data( $file_dir . '/multilanguage.php' );
		}

		$mltlngg_options = get_option( 'mltlngg_options' );

		/* Array merge incase this version has added new options */
		if ( ! isset( $mltlngg_options['plugin_option_version'] ) || $mltlngg_options['plugin_option_version'] !== $mltlngg_plugin_info['Version'] ) {

			/**
			 * Google_auto_translate param
			 *
			 * @deprecated since 1.3.7
			 * @todo remove after 21.07.2021
			 */
			if ( ! isset( $mltlngg_options['google_auto_translate'] ) ) {
				if ( in_array( $mltlngg_options['language_switcher'], array( 'gt', 'gt-horizontal', 'gt-vertical' ), true ) ) {
					$mltlngg_options['google_auto_translate'] = 1;
				} else {
					$mltlngg_options['google_auto_translate'] = 0;
				}
			}

			$options_default                          = mltlngg_get_options_default();
			$mltlngg_options                          = array_merge( $options_default, $mltlngg_options );
			$mltlngg_options['plugin_option_version'] = $mltlngg_plugin_info['Version'];
			/* show pro features */
			$mltlngg_options['hide_premium_options'] = array();

			$update_option = true;
			if ( is_multisite() ) {
				switch_to_blog( 1 );
				register_uninstall_hook( __FILE__, 'mltlngg_delete_options' );
				restore_current_blog();
			} else {
				register_uninstall_hook( __FILE__, 'mltlngg_delete_options' );
			}
		}

		if ( ! isset( $mltlngg_options['plugin_db_version'] ) || $mltlngg_options['plugin_db_version'] !== $db_version ) {
			mltlngg_plugin_db();

			$mltlngg_options['plugin_db_version'] = $db_version;
			$update_option                        = true;
		}

		if ( ! isset( $mltlngg_options['wp_version'] ) || $mltlngg_options['wp_version'] !== $wp_version ) {
			$mltlngg_options['wp_version'] = $wp_version;
			mltlngg_update_video_options();
			$update_option = true;
		}

		$update_option = apply_filters( 'mltlngg_create_table_custom_field', $update_option );
		if ( isset( $update_option ) ) {
			update_option( 'mltlngg_options', $mltlngg_options );
		}
	}
}

if ( ! function_exists( 'mltlngg_get_options_default' ) ) {
	/**
	 * Get default Plugin settings
	 *
	 * @return array $options_default
	 */
	function mltlngg_get_options_default() {
		global $mltlngg_plugin_info, $wp_version, $mltlngg_languages;
		/* Set the default language is the same as the language of the WordPress localization */
		foreach ( $mltlngg_languages as $one_lang ) { /* Search locale in the array of standard languages, source - languages.php */
			$is_lang_exist = array_search( get_locale(), $one_lang );
			if ( false !== $is_lang_exist ) { /* If the locale is found set the default language */
				$language_default = $one_lang;
				break;
			}
		}

		if ( empty( $mltlngg_plugin_info ) ) {
			$file_dir = dirname( __FILE__ );
			if ( ! function_exists( 'get_plugin_data' ) ) {
				require_once( ABSPATH . 'wp-admin/includes/plugin.php' );
			}
			$mltlngg_plugin_info = get_plugin_data( $file_dir . '/multilanguage.php' );
		}

		/* If the language is not found or is not a standard, set English ('en_US') as the default language */
		if ( ! isset( $language_default ) || null === $language_default ) {
			$language_default = array( 'en', 'en_US', 'English', '' );
		}
		/* Set the default options */
		$options_default = array(
			'plugin_option_version'    => $mltlngg_plugin_info['Version'],
			'wp_version'               => $wp_version,
			'suggest_feature_banner'   => 1,
			'display_settings_notice'  => 1,
			'first_install'            => strtotime( 'now' ),
			'default_language'         => $language_default[1],
			'list_of_languages'        => array(
				array(
					'locale'   => $language_default[1],
					'name'     => $language_default[2],
					'enable'   => true,
					'priority' => 1,
				),
			),
			'save_mode'                => 'manual',
			'wp_localization'          => 1,
			'language_switcher'        => 'drop-down-list',
			'menu_language_switcher'   => 'drop-down-list',
			'search'                   => 'single',
			'video_providers'          => array(),
			'translate_open_graph'     => 0,
			'display_alternative_link' => 0,
			'hide_link_slug'           => 0,
			'google_auto_translate'    => 0,
		);
		return $options_default;
	}
}

/* Activation plugin function */
if ( ! function_exists( 'mltlngg_plugin_activate' ) ) {
	/**
	 * Get default Plugin settings
	 *
	 * @param array $networkwide Flag for multisite.
	 */
	function mltlngg_plugin_activate( $networkwide ) {
		global $wpdb;
		/* Activation function for network */
		if ( function_exists( 'is_multisite' ) && is_multisite() ) {
			/* check if it is a network activation - if so, run the activation function for each blog id */
			if ( $networkwide ) {
				$old_blog = $wpdb->blogid;
				/* Get all blog ids */
				$blogids = $wpdb->get_col( "SELECT `blog_id` FROM $wpdb->blogs" );
				foreach ( $blogids as $blog_id ) {
					switch_to_blog( $blog_id );
					_mltlngg_plugin_activate();
				}
				switch_to_blog( $old_blog );
				return;
			}
		}
		_mltlngg_plugin_activate();

		/* Activation function for network, check if it is a network activation - if so, run the activation function for each blog id */
		if ( is_multisite() ) {
			switch_to_blog( 1 );
			register_uninstall_hook( __FILE__, 'mltlngg_delete_options' );
			restore_current_blog();
		} else {
			register_uninstall_hook( __FILE__, 'mltlngg_delete_options' );
		}
	}
}

if ( ! function_exists( 'mltlngg_new_blog' ) ) {
	/**
	 * Activation function for new blog in multisite
	 *
	 * @param int    $blog_id Blog ID.
	 * @param int    $user_id User ID.
	 * @param string $domain  Domain.
	 * @param string $path    Path for site.
	 * @param int    $site_id Site ID.
	 * @param string $meta    Meta string.
	 */
	function mltlngg_new_blog( $blog_id, $user_id, $domain, $path, $site_id, $meta ) {
		global $wpdb;
		if ( is_plugin_active_for_network( 'multilanguage/multilanguage.php' ) ) {
			$old_blog = $wpdb->blogid;
			switch_to_blog( $blog_id );
			_mltlngg_plugin_activate();
			switch_to_blog( $old_blog );
		}
	}
}

if ( ! function_exists( '_mltlngg_plugin_activate' ) ) {
	/**
	 * Create tables for translations when plugin is activate
	 */
	function _mltlngg_plugin_activate() {
		global $wpdb, $mltlngg_options;
		require_once ABSPATH . 'wp-admin/includes/upgrade.php';

		mltlngg_register_settings();

		/* Auto-add Multilanguage widget to active sidebar */
		if ( is_dynamic_sidebar() ) { /* If there is an active sidebar */
			$mltlngg_available_sidebars = get_option( 'sidebars_widgets' ); /* Get all active sidebars */

			/* Delete from database old information about widget */
			foreach ( $mltlngg_available_sidebars as $key1 => $one_sidebar ) {
				if ( 'array_version' !== $key1 && isset( $one_sidebar ) ) {
					$widget_exist = preg_grep( '/multi_language_widget-?\d*/', $one_sidebar );
					if ( isset( $widget_exist ) ) {
						foreach ( $widget_exist as $key2 => $one_widget ) {
							unset( $mltlngg_available_sidebars[ $key1 ][ $key2 ] );
						}
					}
				}
			}
			update_option( 'sidebars_widgets', $mltlngg_available_sidebars );

			/* If more than one sidebar */
			if ( count( $mltlngg_available_sidebars ) > 3 ) {
				foreach ( $mltlngg_available_sidebars as $key => $val ) {
					if ( is_array( $val ) && 'wp_inactive_widgets' !== $key && 'array_version' !== $key && ! preg_match( '/multi_language_widget-?\d*/', implode( ',', $val ) ) && preg_match( '/search.*/', implode( ',', $val ) ) ) { /* If there is no Multilanguage Widget and exist Search Widget in this sidebar */
						array_unshift( $val, 'multi_language_widget-2' ); /* Adding Multilanguage Widget to the top of sidebar */
						$mltlngg_available_sidebars[ $key ] = $val;
						update_option( 'sidebars_widgets', $mltlngg_available_sidebars );
					}
				}
				/* If only one sidebar */
			} elseif ( 3 === count( $mltlngg_available_sidebars ) ) {
				foreach ( $mltlngg_available_sidebars as $key => $val ) {
					if ( is_array( $val ) && 'wp_inactive_widgets' !== $key && 'array_version' !== $key && ! preg_match( '/multi_language_widget-?\d*/', implode( ',', $val ) ) ) { /* If there is no Multilanguage Widget in this sidebar */
						array_unshift( $val, 'multi_language_widget-2' ); /* Adding Multilanguage Widget to the top of sidebar */
						$mltlngg_available_sidebars[ $key ] = $val;
						update_option( 'sidebars_widgets', $mltlngg_available_sidebars );
					}
				}
			}
			$widget_options = get_option( 'widget_multi_language_widget' ); /* Get widget options */
			if ( ! empty( $widget_options ) && ! isset( $widget_options[2] ) ) {
				$widget_options[2] = array(
					'wiget_title'               => '',
					'mltlngg_language_switcher' => 'drop-down-list',
				); /* Set widget options */
				update_option( 'widget_multi_language_widget', $widget_options );
			}
		}
		if ( empty( $mltlngg_options ) ) {
			$mltlngg_options = get_option( 'mltlngg_options' );
		}

		if ( isset( $mltlngg_options['deactivation'] ) ) {
			/* update content */
			$posts = $wpdb->get_results(
				$wpdb->prepare(
					'SELECT ' . $wpdb->posts . '.`ID`, ' . $wpdb->posts . '.`post_content`, ' . $wpdb->posts . '.`post_title`, ' . $wpdb->posts . '.`post_excerpt`
						FROM ' . $wpdb->posts . ', `' . $wpdb->prefix . 'mltlngg_translate`
						WHERE
							`post_type` IN ("page", "post") AND
							' . $wpdb->posts . '.`ID` = `' . $wpdb->prefix . 'mltlngg_translate`.`post_ID` AND
							`post_modified` > %s',
					$mltlngg_options['deactivation']
				)
			);

			foreach ( $posts as $key => $value ) {
				$wpdb->update(
					$wpdb->prefix . 'mltlngg_translate',
					array(
						'post_content' => $value->post_content,
						'post_title'   => $value->post_title,
						'post_excerpt' => $value->post_excerpt,
					),
					array(
						'post_ID'  => $value->ID,
						'language' => $mltlngg_options['default_language'],
					),
					array( '%s', '%s', '%s' ),
					array( '%d', '%s' )
				);
			}

			unset( $mltlngg_options['deactivation'] );
		}

		mltlngg_update_video_options();
		update_option( 'mltlngg_options', $mltlngg_options );
	}
}

if ( ! function_exists( 'mltlngg_plugin_db' ) ) {
	/**
	 * Create tables when plugin is activate
	 */
	function mltlngg_plugin_db() {
		global $wpdb;
		require_once ABSPATH . 'wp-admin/includes/upgrade.php';

		$mltlngg_sql =
			'CREATE TABLE IF NOT EXISTS `' . $wpdb->prefix . 'mltlngg_translate` (
			`ID` INT(6) UNSIGNED NOT NULL AUTO_INCREMENT,
			`post_ID` INT(6) NOT NULL,
			`post_content` longtext CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
			`post_excerpt` TEXT CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
			`post_title` TEXT CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
			`language` TEXT CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
			PRIMARY KEY (`ID`)
			) DEFAULT CHARSET=utf8;';
		dbDelta( $mltlngg_sql );

		$mltlngg_sql =
			'CREATE TABLE IF NOT EXISTS `' . $wpdb->prefix . 'mltlngg_terms_translate` (
			`ID` INT(6) UNSIGNED NOT NULL AUTO_INCREMENT,
			`term_ID` INT(6) NOT NULL,
			`name` TEXT CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
			`language` TEXT CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
			PRIMARY KEY (`ID`)
			) DEFAULT CHARSET=utf8;';
		dbDelta( $mltlngg_sql );

		$column_exists = $wpdb->query( 'SHOW COLUMNS FROM `' . $wpdb->prefix . "mltlngg_translate` LIKE 'post_excerpt';" );
		if ( 0 === $column_exists ) {
			$wpdb->query( 'ALTER TABLE `' . $wpdb->prefix . 'mltlngg_translate` ADD `post_excerpt` TEXT NOT NULL AFTER `post_content`' );
		}
	}
}

if ( ! function_exists( 'mltlngg_plugin_load' ) ) {
	/**
	 * Added languages when plugin is activate
	 */
	function mltlngg_plugin_load() {
		global $mltlngg_get_default_language, $mltlngg_enabled_languages_locale, $mltlngg_enabled_languages;
		$mltlngg_options = get_option( 'mltlngg_options' );

		if ( ! empty( $mltlngg_options ) ) {
			$mltlngg_get_default_language     = $mltlngg_options['default_language'];
			$mltlngg_enabled_languages        = array(); /* Array with all enabled languages */
			$mltlngg_enabled_languages_locale = array(); /* Array with codes of all enabled languages */
			if ( ! empty( $mltlngg_options['list_of_languages'] ) ) {
				foreach ( $mltlngg_options['list_of_languages'] as $item ) {
					if ( ! empty( $item['enable'] ) ) {
						$mltlngg_enabled_languages[ $item['locale'] ] = $item;
						$mltlngg_enabled_languages_locale[]           = $item['locale'];
					}
				}
			}
			$is_admin = mltlngg_is_admin();

			if ( $is_admin && empty( session_id() ) ) {
				session_start(
					array(
						'read_and_close' => true,
					)
				);
			}

			/* Switch display language function */
			mltlngg_get_display_language();

			/* Internationalization */
			load_plugin_textdomain( 'multilanguage', false, dirname( plugin_basename( __FILE__ ) ) . '/languages/' );

			if ( isset( $_SERVER['REQUEST_URI'] ) && strpos( sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ), 'wp-json' ) ) {
				return;
			}

			/*
			 * if not admin panel
			 * and not login/logout/ page
			 * redirect to URL with language code
			 */
			if ( ! $is_admin && isset( $_SERVER['REQUEST_URI'] ) && ! preg_match( '/\/?\w+\.{1}[a-z]{3,4}/', sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ) ) && ! defined( 'WP_CLI' ) ) {
				/* Change WordPress localization if the option is enabled */
				if ( 1 === intval( $mltlngg_options['wp_localization'] ) ) {
					add_filter( 'locale', 'mltlngg_switch_wp_locale' );
				}
				mltlngg_redirect();
			} elseif ( true === $is_admin ) {
				add_filter( 'locale', 'mltlngg_switch_wp_locale' );
			}
		}
	}
}

if ( ! function_exists( 'mltlngg_get_display_language' ) ) {
	/**
	 * Function for change display language
	 */
	function mltlngg_get_display_language() {
		global $mltlngg_current_language, $mltlngg_old_language, $mltlngg_enabled_languages_locale, $mltlngg_enabled_languages, $mltlngg_get_default_language, $mltlngg_options;

		if ( empty( $mltlngg_options ) ) {
			$mltlngg_options = get_option( 'mltlngg_options' );
		}

		/* Do not change the language on the admin page if language changed in the frontend */
		if ( mltlngg_is_admin() && 1 !== intval( $mltlngg_options['wp_localization'] ) ) {
			$wp_locale                = get_locale();
			$mltlngg_current_language = ! empty( $wp_locale ) && in_array( $wp_locale, $mltlngg_enabled_languages_locale, true ) ? $wp_locale : 'en_US';
		} else {
			/* The language is changed via widget */
			if ( isset( $_POST['mltlngg_change_display_lang'] ) && in_array( sanitize_text_field( wp_unslash( $_POST['mltlngg_change_display_lang'] ) ), $mltlngg_enabled_languages_locale, true ) ) {
				if ( empty( $mltlngg_old_language ) && isset( $_COOKIE['mltlngg_language'] ) ) {
					$mltlngg_old_language = sanitize_text_field( wp_unslash( $_COOKIE['mltlngg_language'] ) );/* Language before changing */
				}
				$mltlngg_current_language = sanitize_text_field( wp_unslash( $_POST['mltlngg_change_display_lang'] ) ); /* Language after changing */
				$new_cookie               = $mltlngg_current_language;
				/* The language is entered in the url */
			} elseif ( ! empty( $_GET['lang'] ) && in_array( sanitize_text_field( wp_unslash( $_GET['lang'] ) ), $mltlngg_enabled_languages_locale, true ) ) {
				$mltlngg_current_language = sanitize_text_field( wp_unslash( $_GET['lang'] ) );
				$new_cookie               = $mltlngg_current_language;
			} elseif ( isset( $_SERVER['REQUEST_URI'] ) && preg_match( '~(?<=/)(' . implode( '|', $mltlngg_enabled_languages_locale ) . ')(?![\d\w-])~', sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ), $matches ) ) {
				$mltlngg_current_language = trim( $matches[1], '/' );
				$new_cookie               = $mltlngg_current_language;
				/* The language is not changed, leave the current language from session */
			} elseif ( isset( $_COOKIE['mltlngg_language'] ) && in_array( sanitize_text_field( wp_unslash( $_COOKIE['mltlngg_language'] ) ), $mltlngg_enabled_languages_locale, true ) && count( $mltlngg_enabled_languages ) > 1 ) {
				$mltlngg_current_language = sanitize_text_field( wp_unslash( $_COOKIE['mltlngg_language'] ) );
				/* The language is never chosen, assign the default language from options */
			} else {
				$mltlngg_current_language = $mltlngg_get_default_language;
				$params                   = explode( '/', trim( sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ), '/' ) );
				if ( is_array( $params ) && ! empty( $params ) ) {
					foreach ( $mltlngg_enabled_languages_locale as $locale ) {
						$key = array_search( $locale, $params );
						if ( false !== $key ) {
							$mltlngg_current_language = $params[ $key ];
							break;
						}
					}
				}
				$new_cookie = $mltlngg_current_language;
			}
		}

		if ( isset( $new_cookie ) ) {
			mltlngg_setcookie( $new_cookie );
		}
	}
}

if ( ! function_exists( 'mltlngg_setcookie' ) ) {
	/**
	 * Function for set cookie for site
	 *
	 * @param string $new_cookie Cookie slug.
	 */
	function mltlngg_setcookie( $new_cookie ) {
		$home_url        = get_option( 'home' );
		$home_url_parsed = mltlngg_parse_url( $home_url );
		$host            = $home_url_parsed['host'];
		$host            = preg_replace( '~^(www\.)~', '', $host );
		setcookie( 'mltlngg_language', $new_cookie, time() + 30 * DAY_IN_SECONDS, '/', '.' . $host, is_ssl() );
	}
}

if ( ! function_exists( 'mltlngg_switch_wp_locale' ) ) {
	/**
	 * Function for change WordPress localization when change display language
	 *
	 * @param string $lang (Optional) Language slug.
	 * @return string Language slug.
	 */
	function mltlngg_switch_wp_locale( $lang = 'en_US' ) {
		global $mltlngg_current_language, $mltlngg_options;
		return ( ! empty( $mltlngg_current_language ) ) ? $mltlngg_current_language : $lang;
	}
}

if ( ! function_exists( 'mltlngg_redirect' ) ) {
	/**
	 * Function for redirect when display language is changed
	 */
	function mltlngg_redirect() {
		global $mltlngg_enabled_languages, $mltlngg_options, $mltlngg_current_language, $mltlngg_get_default_language;
		/* gutenberg save post */
		/* Maybe remove because it prevents the url from changing if there is a post type in the title */
		/*if ( mltlngg_is_rest_api() ) {
			return;
		}*/

		if ( empty( $mltlngg_options ) ) {
			$mltlngg_options = get_option( 'mltlngg_options' );
		}

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

		if (
			( isset( $_POST['wp_customize'] ) && 'on' === sanitize_text_field( wp_unslash( $_POST['wp_customize'] ) ) ) ||
			( is_plugin_active( 'nextgen-gallery/nggallery.php' ) && isset( $_REQUEST['photocrati_ajax'] ) ) ||
			1 >= count( $mltlngg_enabled_languages )
		) {
			return;
		}

		if ( is_plugin_active( 'woocommerce/woocommerce.php' ) && isset( $_SERVER['REQUEST_URI'] ) && preg_match( '/\/wc-api\/v([1-3]{1})(.*)?/', sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ) ) ) {
			/* WooCommerce REST API */
			return;
		}

		if ( strpos( sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ), 'wp-json' ) ) {
				return;
		}

		$url_parts   = mltlngg_parse_url();
		$request_url = $url_parts['full_url'];

		$redirect_url = apply_filters( 'mltlngg_redirect_url', mltlngg_get_lang_link() );

		$redirect = false;
		
		if ( rtrim( preg_replace( '~^http(s)?://~U', '', $redirect_url ), '/' ) !== rtrim( preg_replace( '~^http(s)?://~U', '', $request_url ), '/' ) ) {
			$redirect = true;
		}

		$redirect = apply_filters( 'mltlngg_redirect_flag', $redirect, $request_url, $redirect_url );

		if ( $redirect && filter_var( $redirect_url, FILTER_VALIDATE_URL ) ) {
			wp_safe_redirect( $redirect_url );
			exit();
		}
	}
}

if ( ! function_exists( 'mltlngg_server_parts' ) ) {
	/**
	 * Function for get server info
	 *
	 * @param bool $use_forwarded_host Flag for use HTTP_X_FORWARDED_HOST or HTTP_HOST.
	 * @return array $result
	 */
	function mltlngg_server_parts( $use_forwarded_host = false ) {
		$s          = $_SERVER;
		$ssl        = ( ! empty( $s['HTTPS'] ) && 'on' === $s['HTTPS'] );
		$sp         = strtolower( $s['SERVER_PROTOCOL'] );
		$scheme     = substr( $sp, 0, strpos( $sp, '/' ) ) . ( ( $ssl ) ? 's' : '' );
		$port       = $s['SERVER_PORT'];
		$port       = ( ( ! $ssl && '80' === $port ) || ( $ssl && '443' === $port ) ) ? '' : ':' . $port;
		$host       = ( $use_forwarded_host && isset( $s['HTTP_X_FORWARDED_HOST'] ) ) ? $s['HTTP_X_FORWARDED_HOST'] : ( isset( $s['HTTP_HOST'] ) ? $s['HTTP_HOST'] : null );
		$host       = isset( $host ) ? $host : $s['SERVER_NAME'] . $port;
		$url_origin = $scheme . '://' . $host;
		$full_url   = $url_origin . $s['REQUEST_URI'];

		$result = array(
			'scheme'     => $scheme,
			'port'       => $port,
			'host'       => $host,
			'url_origin' => $url_origin,
			'full_url'   => $full_url,
		);

		return $result;
	}
}

if ( ! function_exists( 'mltlngg_parse_url' ) ) {
	/**
	 * Function for get url info
	 *
	 * @param bool $url (Optional) URL for parse.
	 * @return array $url_parsed
	 */
	function mltlngg_parse_url( $url = '' ) {
		global $mltlngg_enabled_languages_locale;
		$home_url = get_option( 'home' );

		if ( empty( $url ) ) {
			$server_parts = mltlngg_server_parts();
			$url          = $server_parts['full_url'];
		}

		$scheme = wp_parse_url( $url, PHP_URL_SCHEME );
		if ( empty( $scheme ) ) {
			$scheme = is_ssl() ? 'https' : 'http';
		}

		$scheme   .= '://';
		$host      = wp_parse_url( $url, PHP_URL_HOST );
		$home_host = wp_parse_url( $home_url, PHP_URL_HOST );
		$port      = wp_parse_url( $url, PHP_URL_PORT );
		$port      = empty( $port ) ? '' : ':' . $port;

		$full_host = $scheme . $host . $port;

		$host_pattern = '~^((.*)' . preg_quote( $home_host . $port, '~' ) . ')~';
		$home_dir     = preg_replace( $host_pattern, '', $home_url );

		$home_url_pattern = '~^(' . preg_quote( $full_host . $home_dir, '~' ) . ')~U';
		$request_uri      = preg_replace( $home_url_pattern, '', $url );

		$reg_exp = '~(?<=/)(' . implode( '|', $mltlngg_enabled_languages_locale ) . ')(?![\d\w-])~';
		preg_match_all( $reg_exp, $request_uri, $matches );

		if ( isset( $matches ) && count( $matches[0] ) > 1 ) {
			/* too many language locales, remove all except the first one */
			unset( $matches[0][0] );
			$reg_exp     = '~(/' . implode( '|/', $matches[0] ) . ')(?![\d\w-])~';
			$request_uri = preg_replace( $reg_exp, '', $request_uri );
		}

		$url_parsed = array(
			'scheme'      => $scheme,                                 /* http:// || https:// */
			'host'        => $host,                                   /* www.example.com */
			'port'        => $port,                                   /* :80 */
			'full_host'   => $full_host,                              /* http://www.example.com:80 */
			'home_dir'    => $home_dir,                               /* /wp - subsite directory or wordpress subdirectory */
			'request_uri' => $request_uri,                            /* /page-sample?paged=2 */
			'full_url'    => $full_host . $home_dir . $request_uri,   /* http://www.example.com:80/wp/page-sample?paged=2 */
		);

		return apply_filters( 'mltlngg_parse_url', $url_parsed );
	}
}

if ( ! function_exists( 'mltlngg_remove_link_lang' ) ) {
	/**
	 * Remove all language slugs from the given link
	 *
	 * @param bool $url (Optional) URL for remove language slugs.
	 * @return string $url
	 */
	function mltlngg_remove_link_lang( $url = '' ) {
		global $mltlngg_enabled_languages_locale;
		$is_custom_permalink = get_option( 'permalink_structure' );

		$url_parsed = mltlngg_parse_url( $url );
		$url        = $url_parsed['full_url'];

		$url = apply_filters( 'mltlngg_url_before_lang_remove', $url );

		if ( $is_custom_permalink ) {
			$locales = implode( '|', $mltlngg_enabled_languages_locale );
			$url     = preg_replace( '~/(' . $locales . ')(?![\d\w-])~', '', $url );
		} else {
			$url = remove_query_arg( 'lang', $url );
		}
		$url = apply_filters( 'mltlngg_url_after_lang_remove', $url );

		return $url;
	}
}

if ( ! function_exists( 'mltlngg_get_lang_link' ) ) {
	/**
	 * Localize given link
	 *
	 * @param array $args (Optional) Args array.
	 * @return string $url
	 */
	function mltlngg_get_lang_link( $args = array() ) {
		global $mltlngg_options, $mltlngg_current_language, $mltlngg_enabled_languages, $mltlngg_enabled_languages_locale, $mltlngg_get_default_language;

		$defaults = array(
			'lang'  => '',
			'url'   => '',
			'force' => false,
		);

		extract( wp_parse_args( $args, $defaults ) );

		if ( empty( $mltlngg_options ) ) {
			$mltlngg_options = get_option( 'mltlngg_options' );
		}

		$url_parsed = mltlngg_parse_url( $url );
		$url        = $url_parsed['full_url'];

		if ( empty( $lang ) ) {
			$lang = $mltlngg_current_language;
		}

		if ( ! in_array( $lang, $mltlngg_enabled_languages_locale, true ) ) {
			$lang = $mltlngg_get_default_language;
		}

		$hide_lang = ! ! ( ( 'hide' === $force ) || ( $lang === $mltlngg_get_default_language && $mltlngg_options['hide_link_slug'] && 'display' !== $force ) );
		/* Clean all labguage slugs */
		$url        = mltlngg_remove_link_lang( $url );
		$url_parsed = mltlngg_parse_url( $url );

		$is_custom_permalink = get_option( 'permalink_structure' );
		if ( $is_custom_permalink ) {
			$home_url      = get_option( 'home' );
			$locale_string = ( $hide_lang ) ? '' : '/' . $lang;
			if ( ! $hide_lang ) {
				$url           = $home_url . $locale_string . $url_parsed['request_uri'];
			} else {
				$url           = $home_url . $url_parsed['request_uri'];
			}
		} else {
			if ( ! $hide_lang ) {
				$url = add_query_arg( 'lang', $lang, $url );
			}

			if ( 'page' === get_option( 'show_on_front' ) ) {
				$homepage_id = get_option( 'page_on_front' );
				$url_parsed  = mltlngg_parse_url( $url );
				parse_str( str_replace( '/?', '', $url_parsed['request_uri'] ), $params );

				if ( isset( $params['lang'] ) && 1 === count( $params ) ) {
					/* add page id param if language param exist */
					$url = add_query_arg( 'page_id', $homepage_id, $url );
				} elseif ( ! isset( $params['lang'] ) && isset( $params['page_id'] ) && $homepage_id === $params['page_id'] && 1 === count( $params ) ) {
					/* delete homepage id param if language param is missing */
					$url = remove_query_arg( 'page_id', $url );
				}
			}
		}

		$url = apply_filters( 'mltlngg_get_lang_link', $url, $lang, $force );

		return $url;
	}
}

if ( ! function_exists( 'mltlngg_get_lang_code' ) ) {
	/**
	 * Search in enabled languages for specified lang slug and return corresponding language code
	 *
	 * @param string $lang_slug (Optional) Slug for current language.
	 * @return string $lang_slug
	 */
	function mltlngg_get_lang_code( $lang_slug = '' ) {
		global $mltlngg_languages, $mltlngg_enabled_languages, $mltlngg_current_language;

		if ( empty( $lang_slug ) ) {
			$lang_slug = $mltlngg_current_language;
		}

		foreach ( $mltlngg_languages as $language ) {
			if ( isset( $mltlngg_enabled_languages[ $language[1] ] ) && $language[1] === $lang_slug ) {
				return $language[0];
			}
		}

		$parts = explode( '_', $lang_slug );
		return strtolower( $parts[0] );
	}
}

if ( ! function_exists( 'mltlngg_wp_head' ) ) {
	/**
	 * Added meta tags and alternate links to header
	 */
	function mltlngg_wp_head() {
		mltlngg_add_translated_meta_tags();
		mltlngg_alternate_links();
	}
}

if ( ! function_exists( 'mltlngg_alternate_links' ) ) {
	/**
	 * Display alternate links in header
	 */
	function mltlngg_alternate_links() {
		global $mltlngg_enabled_languages, $mltlngg_get_default_language, $mltlngg_options;

		if ( ! $mltlngg_options['display_alternative_link'] ) {
			return false;
		}

		$defaults       = array( 'x-default', $mltlngg_get_default_language );
		$link_attr_args = array(
			array(
				'hreflang'   => 'x-default',
				'link_param' => $mltlngg_get_default_language,
			),
		);
		foreach ( $mltlngg_enabled_languages as $lang ) {
			$link_attr_args[] = array(
				'hreflang'   => $lang['locale'],
				'link_param' => $lang['locale'],
			);
		}

		/**
		 * You can add, edit or remove some links
		 */
		$link_attr_args = apply_filters( 'bwsplgns_mltlngg_add_alt_links', $link_attr_args );

		if ( empty( $link_attr_args ) || ! is_array( $link_attr_args ) ) {
			return false;
		}

		foreach ( $link_attr_args as $item ) {
			if ( empty( $item['hreflang'] ) || empty( $item['link_param'] ) ) {
				continue;
			}

			if ( 'x-default' === $item['hreflang'] || $mltlngg_get_default_language === $item['hreflang'] ) {
				$args = array(
					'lang'  => $item['link_param'],
					'force' => 'false',
				);
			} else {
				$args = array(
					'lang'  => $item['link_param'],
					'force' => 'display',
				);
			}

			$permalink_structure = get_option( 'permalink_structure' );

			$permalink_structure_last_symbol = substr( $permalink_structure, -1 );

			$hreflang = explode( '_', $item['hreflang'] );

			$language_link = mltlngg_get_lang_link( $args );
			printf(
				'<link rel="alternate" hreflang="%1$s" href="%2$s" />',
				strtolower( esc_attr( $hreflang[0] ) ),
				'/' === $permalink_structure_last_symbol ? esc_url( $language_link ) : esc_url( rtrim( $language_link, '/' ) )
			);
		}
	}
}

if ( ! function_exists( 'mltlngg_add_meta_filters' ) ) {
	/**
	 * Added filters for meta tags
	 */
	function mltlngg_add_meta_filters() {
		global $mltlngg_current_language, $mltlngg_options;

		if ( 1 === intval( $mltlngg_options['translate_open_graph'] ) ) {
			if ( is_plugin_active( 'facebook-button-plugin/facebook-button-plugin.php' ) || is_plugin_active( 'facebook-button-plus/facebook-button-plus.php' ) || is_plugin_active( 'facebook-button-pro/facebook-button-pro.php' ) ) {
				add_filter( 'fcbkbttn_meta_title', 'mltlngg_the_title_filter' );
				add_filter( 'fcbkbttn_meta_description', 'mltlngg_localize_excerpt' );
			}
			if ( is_plugin_active( 'all-in-one-seo-pack/all_in_one_seo_pack.php' ) || is_plugin_active( 'all-in-one-seo-pack-pro/all_in_one_seo_pack_pro.php' ) ) {
				add_filter( 'aioseo_description', 'mltlngg_localize_excerpt' );
				add_filter( 'aioseop_description', 'mltlngg_localize_excerpt' );
				add_filter( 'aioseop_opengraph_placeholder', 'mltlngg_the_title_filter' );
			}

			if ( is_plugin_active( 'wordpress-seo/wp-seo.php' ) || is_plugin_active( 'wordpress-seo-pro/wp-seo-pro.php' ) ) {
				add_filter( 'wpseo_opengraph_title', 'mltlngg_wpseo_the_title_filter' );
				add_filter( 'wpseo_opengraph_desc', 'mltlngg_localize_excerpt' );
				add_filter( 'wpseo_title', 'mltlngg_wpseo_the_title_filter' );
				add_filter( 'wpseo_metadesc', 'mltlngg_localize_excerpt' );
			}
		}
	}
}

if ( ! function_exists( 'mltlngg_add_translated_meta_tags' ) ) {
	/**
	 * Display meta tags
	 */
	function mltlngg_add_translated_meta_tags() {
		global $mltlngg_current_language, $mltlngg_options, $post;

		if ( empty( $mltlngg_options ) ) {
			$mltlngg_options = get_option( 'mltlngg_options' );
		}

		if ( is_singular() ) {

			$has_filters = 0;

			$meta_filters = array(
				'fcbkbttn_meta_title',
				'fcbkbttn_meta_description',
				'aioseo_description',
				'aioseop_description',
				'aioseop_opengraph_placeholder',
				'wpseo_opengraph_title',
				'wpseo_opengraph_desc',
				'wpseo_title',
				'wpseo_metadesc',
			);

			foreach ( $meta_filters as $meta_filter ) {
				if ( has_filter( $meta_filter ) ) {
					$has_filters++;
				}
			}

			if ( 0 === $has_filters &&
				1 === intval( $mltlngg_options['translate_open_graph'] ) &&
				$mltlngg_current_language !== $mltlngg_options['default_language']
			) {

				$title     = mltlngg_the_title_filter( get_the_title(), $post->ID );
				$site_name = get_bloginfo();

				if ( has_excerpt() ) {
					$description = mltlngg_localize_excerpt( get_the_excerpt() );
				} else {
					$description = '';
				}

				print "\n" . '<!-- mltlngg meta start -->';
				print "\n" . '<meta property="og:title" content="' . esc_html( $title ) . '"/>';
				print "\n" . '<meta property="og:site_name" content="' . esc_html( $site_name ) . '"/>';
				print "\n" . '<meta name="twitter:card" content="summary"/>';
				print "\n" . '<meta name="twitter:site" content="' . esc_html( $site_name ) . '"/>';
				print "\n" . '<meta name="twitter:title" content="' . esc_html( $title ) . '"/>';
				if ( ! empty( $description ) ) {
					print "\n" . '<meta name="description" content="' . esc_html( $description ) . '"/>';
					print "\n" . '<meta property="og:description" content="' . esc_html( $description ) . '"/>';
					print "\n" . '<meta name="twitter:description" content="' . esc_html( $description ) . '"/>';
				}
				print "\n" . '<!-- mltlngg meta end -->';
			}
		}

	}
}

/* To search for the first occurrence of slug language */
if ( ! function_exists( 'mltlngg_str_replace_once' ) ) {
	/**
	 * To search for the first occurrence of slug language
	 *
	 * @param string $needle   String for search.
	 * @param string $replace  String for replace.
	 * @param string $haystack String where search.
	 * @return string result replace
	 */
	function mltlngg_str_replace_once( $needle, $replace, $haystack ) {
		/* Looks for the first occurence of $needle in $haystack and replaces it with $replace. */
		$pos = strpos( $haystack, $needle );
		if ( false === $pos ) {
			/* Nothing found */
			return $haystack;
		}
		return substr_replace( $haystack, $replace, $pos, strlen( $needle ) );
	}
}

if ( ! function_exists( 'mltlngg_add_query_vars' ) ) {
	/**
	 * Added vars to query
	 *
	 * @param array $vars Query vars array.
	 * @return array $vars
	 */
	function mltlngg_add_query_vars( $vars ) {
		$vars[] = 'lang';
		return $vars;
	}
}

if ( ! function_exists( 'mltlngg_rewrite_rules' ) ) {
	/**
	 * Add rewrite rules for available languages
	 */
	function mltlngg_rewrite_rules() {
		global $wp_rewrite, $mltlngg_options;

		if ( empty( $mltlngg_options ) ) {
			$mltlngg_options = get_option( 'mltlngg_options' );
		}

		/* Array with codes of all enabled languages */
		$mltlngg_enabled_languages_locale = array();
		foreach ( $mltlngg_options['list_of_languages'] as $item ) {
			if (
				! empty( $item['enable'] ) &&
				( $item['locale'] !== $mltlngg_options['default_language'] || ! $mltlngg_options['hide_link_slug'] )
			) {
				$mltlngg_enabled_languages_locale[] = $item['locale'];
			}
		}
		if ( ! empty( $mltlngg_enabled_languages_locale ) ) {
			$mltlngg_lang_regular = '(' . implode( '|', $mltlngg_enabled_languages_locale ) . ')';
			add_rewrite_tag( '%lang%', $mltlngg_lang_regular, 'lang=' );
			$new_rules = array( $mltlngg_lang_regular . '/?$' => 'index.php?lang=$matches[1]' );
			foreach ( $wp_rewrite->rules as $left => $right ) {
				$new_rules[ $mltlngg_lang_regular . '/' . $left ] = preg_replace_callback( '/matches\[(\d{1,2})\]/', 'mltlngg_replace_matched_rule', $right ) . '&lang=$matches[1]';
			}
			$wp_rewrite->rules = $new_rules + $wp_rewrite->rules;
		}
	}
}

if ( ! function_exists( 'mltlngg_replace_matched_rule' ) ) {
	/**
	 * Replave rewrite rules
	 *
	 * @param array $matches Matches array.
	 * @return string With $matches.
	 */
	function mltlngg_replace_matched_rule( $matches ) {
		return 'matches[' . ( $matches[1] + 1 ) . ']';
	}
}

if ( ! function_exists( 'mltlngg_get_url_translated' ) ) {
	/**
	 * Adding language code to url after home_url
	 *
	 * @param string $url Get lang form URL.
	 * @return $url
	 */
	function mltlngg_get_url_translated( $url ) {
		global $mltlngg_current_language, $mltlngg_enabled_languages, $mltlngg_options;
		if ( isset( $_REQUEST['_locale'] ) || strpos( sanitize_text_field( wp_unslash( $url ) ), 'wp-json' ) ) {
			return $url;
		}
		if ( empty( $mltlngg_options ) ) {
			$mltlngg_options = get_option( 'mltlngg_options' );
		}

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

		if (
			(
				false === strpos( $url, content_url() ) &&
				false === strpos( $url, includes_url() )
			) &&
			isset( $mltlngg_enabled_languages ) &&
			count( (array) $mltlngg_enabled_languages ) > 1 &&
			! ( mltlngg_is_admin() ) &&
			isset( $_SERVER['REQUEST_URI'] ) &&
			false === strpos( sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ), 'wp-login.php' ) &&
			! ( $mltlngg_current_language === $mltlngg_options['default_language'] && $mltlngg_options['hide_link_slug'] ) &&
			! ( is_plugin_active( 'woocommerce/woocommerce.php' ) && preg_match( '/\/wc-api\/v([1-3]{1})(.*)?/', sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ) ) )
		) {
			$is_custom_permalink = get_option( 'permalink_structure' );

			if ( $is_custom_permalink ) {
				$homeurl = get_option( 'home' );
				$url     = str_replace( $homeurl, $homeurl . '/' . $mltlngg_current_language, $url );
			} else {
				$url = add_query_arg( 'lang', $mltlngg_current_language, $url );
			}
		}
		return $url;
	}
}

if ( ! function_exists( 'mltlngg_script_style' ) ) {
	/**
	 * Load scripts and styles
	 */
	function mltlngg_script_style() {
		global $hook_suffix, $mltlngg_options, $mltlngg_plugin_info, $mltlngg_enabled_languages, $mltlngg_current_language, $mltlngg_get_default_language, $wp_version, $post;
		wp_enqueue_style( 'mltlngg_stylesheet', plugins_url( 'css/style.css', __FILE__ ), array(), $mltlngg_plugin_info['Version'] );

		if ( is_admin() ) {
			if ( mltlngg_is_gutenberg_active() ) {
				if ( ! empty( $mltlngg_enabled_languages ) ) {
					wp_enqueue_script( 'mltlngg_script_gutenberg', plugins_url( 'js/gutenberg-script.js', __FILE__ ), array( 'jquery' ), $mltlngg_plugin_info['Version'] . '.3', true );
					wp_localize_script(
						'mltlngg_script_gutenberg',
						'mltlngg_vars',
						array(
							'ajax_nonce'           => wp_create_nonce( 'mltlngg-ajax-nonce' ),
							'default_language'     => $mltlngg_get_default_language,
							'current_language'     => $mltlngg_current_language,
							'active_language_list' => $mltlngg_enabled_languages,
							'add_new_lang_link'    => admin_url( 'admin.php?page=multilanguage-languages.php' ),
						)
					);
					if ( $wp_version >= '5.6' ) {
						wp_enqueue_script(
							'ugb-block-js-vendor',
							plugins_url( 'js/editor_vendor.js', __FILE__ ),
							array(),
							$mltlngg_plugin_info['Version'],
							true
						);
						wp_enqueue_script(
							'ugb-block-js',
							plugins_url( 'js/editor_blocks.js', __FILE__ ),
							array( 'ugb-block-js-vendor', 'code-editor', 'wp-blocks', 'wp-element', 'wp-components', 'wp-editor', 'wp-util', 'wp-plugins', 'wp-edit-post', 'wp-i18n', 'wp-api', 'lodash' ),
							$mltlngg_plugin_info['Version'],
							true
						);
						wp_localize_script(
							'ugb-block-js-vendor',
							'stackable',
							array(
								'disabledBlocks' => 'false',
							)
						);
					}
				}
			} else {
				$mltlngg_vars = array(
					'update_post_error'   => esc_html__( 'Attention!!! The changes will not be saved because Title and Content fields are empty on the current tab! It is recommended to fill in at least one field or switch to the tab with the fields that are already filled.', 'multilanguage' ),
					'confirm_update_post' => esc_html__( 'Switching to another language will remove all unsaved. Save data?', 'multilanguage' ),
					'ajax_nonce'          => wp_create_nonce( 'mltlngg-ajax-nonce' ),
				);
				wp_enqueue_script( 'mltlngg_script', plugins_url( 'js/script.js', __FILE__ ), array( 'jquery' ), $mltlngg_plugin_info['Version'], true );
				wp_localize_script( 'mltlngg_script', 'mltlngg_vars', apply_filters( 'mltlngg_add_metadata', $mltlngg_vars, $post ) );
			}

			if ( 'nav-menus.php' === $hook_suffix ) {
				wp_enqueue_script( 'mltlngg_nav_menu', plugins_url( 'js/nav-menu.js', __FILE__ ), array( 'jquery' ), $mltlngg_plugin_info['Version'], true );

				/* the options values for the language switcher */
				$data = array(
					'title'    => esc_html__( 'Multilanguage switcher', 'multilanguage' ),
					'value'    => array(),
					'switcher' => array(
						'input' => array(
							'drop-down-icons'  => esc_html__( 'Drop-down list', 'multilanguage' ) . ' (' . esc_html__( 'flag', 'multilanguage' ) . ')',
							'drop-down-titles' => esc_html__( 'Drop-down list', 'multilanguage' ) . ' (' . esc_html__( 'title', 'multilanguage' ) . ')',
							'drop-down-list'   => esc_html__( 'Drop-down list', 'multilanguage' ) . ' (' . esc_html__( 'flag', 'multilanguage' ) . ' + ' . esc_html__( 'title', 'multilanguage-pro' ) . ')',
						),
					),
				);

				$items = get_posts(
					array(
						'numberposts' => -1,
						'nopaging'    => true,
						'post_type'   => 'nav_menu_item',
						'fields'      => 'ids',
						'meta_key'    => '_mltlngg_menu_item',
					)
				);
				foreach ( $items as $item ) {
					$data['value'][ $item ] = get_post_meta( $item, '_mltlngg_menu_item', true );
				}
				wp_localize_script( 'mltlngg_nav_menu', 'mltlngg_var', $data );
			}

			if ( isset( $_GET['page'] ) && 'mltlngg_settings' === $_GET['page'] ) {
				bws_enqueue_settings_scripts();
				bws_plugins_include_codemirror();
			}
		}
	}
}

if ( ! function_exists( 'mltlngg_enqueue_google_script' ) ) {
	/**
	 * Load scripts and styles for Google API
	 *
	 * @param string $layout Display parameter.
	 */
	function mltlngg_enqueue_google_script( $layout = 'dropdown' ) {
		global $mltlngg_plugin_info, $mltlngg_current_language, $mltlngg_options;

		wp_enqueue_script( 'mltlngg_google_script', plugins_url( 'js/google-script.js', __FILE__ ), array(), $mltlngg_plugin_info['Version'], true );

		$lang = mltlngg_get_lang_code( $mltlngg_current_language );

		$all_lang = $mltlngg_options['list_of_languages'];
		$all_lang_codes = array_column( $all_lang, 'locale' );
		foreach( $all_lang_codes as $key => $code ) {
			$code = explode( '_', $code );
			$all_lang_codes[ $key ] = $code[0];
		}

		wp_localize_script(
			'mltlngg_google_script',
			'mltlngg_lang_var',
			array(
				'current_lang'      => $lang,
				'layout'            => $layout,
				'include_languages' => implode( ',', $all_lang_codes ),
			)
		);

		wp_enqueue_script( 'mltlngg_google_translate_api', '//translate.google.com/translate_a/element.js?cb=mltlnggGoogleTranslateElementInit', array( 'mltlngg_google_script' ), false, true );
	}
}

if ( ! function_exists( 'mltlngg_disable_autosave_editor_script' ) ) {
	/**
	 * Function for disable autosave in post/page editor
	 */
	function mltlngg_disable_autosave_editor_script() {
		wp_dequeue_script( 'autosave' );
		wp_deregister_script( 'autosave' );
	}
}

/**
 * Adds Multilanguage Widget widget.
 */
if ( ! class_exists( 'Mltlngg_Widget' ) ) {
	class Mltlngg_Widget extends WP_Widget {
		/**
		 * Register widget with WordPress.
		 */
		public function __construct() {
			parent::__construct(
				'multi_language_widget', /* Base ID */
				'Multilanguage', /* Name */
				array( 'description' => esc_html__( 'Content language switcher', 'multilanguage' ) ) /* Args */
			);
		}

		/**
		 * Register widget.
		 *
		 * @param int $number Widget ID.
		 */
		public function _register_one( $number = -1 ) {
			parent::_register_one( $number );
			if ( isset( $this->registered ) ) {
				return;
			}
			$this->registered = true;

			/*
			Note that the widgets component in the customizer will also do
			the 'admin_print_scripts-widgets.php' action in WP_Customize_Widgets::print_scripts().
			add_action( 'admin_print_scripts-widgets.php', array( $this, 'enqueue_admin_scripts' ) );

			if ( $this->is_preview() ) {
				add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_preview_scripts' ) );
			}

			Note that the widgets component in the customizer will also do
			the 'admin_footer-widgets.php' action in WP_Customize_Widgets::print_footer_scripts().
			 */
			add_action( 'admin_footer-widgets.php', array( $this, 'render_control_template_scripts' ) );

			/* add_filter( 'display_media_states', array( $this, 'display_media_state' ), 10, 2 ); */
		}

		/**
		 * Front-end display of widget.
		 *
		 * @see WP_Widget::widget()
		 *
		 * @param array $args   Widget arguments.
		 * @param array $instance Saved values from database.
		 */
		public function widget( $args, $instance ) {
			global $mltlngg_options;
			$mltlngg_language_switcher = ( isset( $instance['mltlngg_language_switcher'] ) ) ? $instance['mltlngg_language_switcher'] : $mltlngg_options['language_switcher'];
			$title                     = ( ! empty( $instance['title'] ) ) ? apply_filters( 'widget_title', $instance['title'], $instance, $this->id_base ) : '';
			echo wp_kses_post( $args['before_widget'] );
			echo wp_kses_post( $args['before_title'] ) . esc_html( $title ) . wp_kses_post( $args['after_title'] );
			if ( in_array( $mltlngg_options['language_switcher'], array( 'gt', 'gt-horizontal', 'gt-vertical' ) ) && ! in_array( $mltlngg_language_switcher, array( 'gt', 'gt-horizontal', 'gt-vertical' ) ) ) {
				$mltlngg_language_switcher = $mltlngg_options['language_switcher'];
			}
			/* Language switcher style */
			echo mltlngg_get_switcher_block( $mltlngg_language_switcher );
			echo wp_kses_post( $args['after_widget'] );
		}

		/**
		 * Back-end widget form.
		 *
		 * @see WP_Widget::form()
		 *
		 * @param array $instance Previously saved values from database.
		 */
		public function form( $instance ) {
			global $mltlngg_options;
			$language_switcher_name = array(
				'drop-down-list'   => __( 'Drop-down list (flag + title)', 'multilanguage' ),
				'drop-down-titles' => __( 'Drop-down list (title)', 'multilanguage' ),
				'drop-down-icons'  => __( 'Drop-down list (flag)', 'multilanguage' ),
				'list-flag-title'  => __( 'List (flag + title)', 'multilanguage' ),
				'list-titles'      => __( 'List (title)', 'multilanguage' ),
				'list-short-title' => __( 'List (short title)', 'multilanguage' ),
				'flags-icons'      => __( 'Flag', 'multilanguage' ),
				'gt'               => __( 'Google Auto Translate (drop-down only)', 'multilanguage' ),
				'gt-horizontal'    => __( 'Google Auto Translate (horizontal)', 'multilanguage' ),
				'gt-vertical'      => __( 'Google Auto Translate (vertical)', 'multilanguage' ),
			);

			$title                     = ( isset( $instance['title'] ) ) ? $instance['title'] : __( 'Localization', 'multilanguage' );
			$mltlngg_language_switcher = ( isset( $instance['mltlngg_language_switcher'] ) ) ? $instance['mltlngg_language_switcher'] : $mltlngg_options['language_switcher']; ?>
			<p>
				<label><?php esc_html_e( 'Title:' ); ?>
					<input class="widefat" id="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'title' ) ); ?>" type="text" value="<?php echo esc_attr( $title ); ?>">
				</label>
			</p>
			<p>
				<select name="<?php echo esc_attr( $this->get_field_name( 'mltlngg_language_switcher' ) ); ?>">
					<?php
					foreach ( $language_switcher_name as $key => $value ) {
						$disabled = '';
						if ( in_array( $mltlngg_options['language_switcher'], array( 'gt', 'gt-horizontal', 'gt-vertical' ) ) && ! in_array( $key, array( 'gt', 'gt-horizontal', 'gt-vertical' ) ) ) {
							$disabled = 'disabled="disabled"';
						} ?>
						<option <?php selected( $mltlngg_language_switcher, $key ); ?> <?php echo esc_html( $disabled ); ?> value="<?php echo esc_attr( $key ); ?>"><?php echo esc_html( $value ); ?></option>
						<?php
					}
					?>
				</select>
			</p>
			<?php
		}
		/**
		 * Render form template scripts.
		 *
		 * @since 4.9.0
		 */
		public static function render_control_template_scripts() {
			?>
		<script type="text/html" id="tmpl-widget-multi_language_widget-control-fields">
			<# var elementIdPrefix = 'el' + String( Math.random() ).replace( /\D/g, '' ) + '_' #>
			<p>
				<label for="{{ elementIdPrefix }}title"><?php esc_html_e( 'Title:' ); ?></label>
				<input id="{{ elementIdPrefix }}title" type="text" class="widefat title">
			</p>

			<p>
				<label for="{{ elementIdPrefix }}content" id="{{ elementIdPrefix }}content-label"><?php esc_html_e( 'Content:' ); ?></label>
				<textarea id="{{ elementIdPrefix }}content" class="widefat code content" rows="16" cols="20"></textarea>
			</p>

			<?php if ( ! current_user_can( 'unfiltered_html' ) ) : ?>
				<?php
				$probably_unsafe_html = array( 'script', 'iframe', 'form', 'input', 'style' );
				$allowed_html         = wp_kses_allowed_html( 'post' );
				$disallowed_html      = array_diff( $probably_unsafe_html, array_keys( $allowed_html ) );
				?>
				<?php if ( ! empty( $disallowed_html ) ) : ?>
					<# if ( data.codeEditorDisabled ) { #>
						<p>
							<?php esc_html_e( 'Some HTML tags are not permitted, including:' ); ?>
							<code><?php echo implode( '</code>, <code>', wp_kses_post( $disallowed_html ) ); ?></code>
						</p>
					<# } #>
				<?php endif; ?>
			<?php endif; ?>

			<div class="code-editor-error-container"></div>
		</script>
			<?php
		}

		/**
		 * Sanitize widget form values as they are saved.
		 *
		 * @see WP_Widget::update()
		 *
		 * @param array $new_instance Values just sent to be saved.
		 * @param array $old_instance Previously saved values from database.
		 *
		 * @return array Updated safe values to be saved.
		 */
		public function update( $new_instance, $old_instance ) {
			$instance                              = array();
			$instance['title']                     = ( ! empty( $new_instance['title'] ) ) ? wp_strip_all_tags( $new_instance['title'] ) : '';
			$instance['mltlngg_language_switcher'] = $new_instance['mltlngg_language_switcher'];
			return $instance;
		}

	} /* class Mltlngg_Widget */
}

if ( ! function_exists( 'register_mltlngg_widget' ) ) {
	/**
	 * Register Multilanguage Widget widget
	 */
	function register_mltlngg_widget() {
		register_widget( 'Mltlngg_Widget' );
	}
}

if ( ! function_exists( 'mltlngg_post_tag_labels' ) ) {
	/**
	 * Add text for separate_items_with_commas
	 *
	 * @param object $labels Taxonomy object.
	 * @return object $labels Taxonomy object.
	 */
	function mltlngg_post_tag_labels( $labels ) {
		if ( is_admin() && class_exists( 'Classic_Editor' ) ) {
		$labels->separate_items_with_commas .= '<p style="color: red;">' . wp_sprintf( __( 'Translate Post Tags only on the %sTags%s page', 'multilanguage' ),  wp_sprintf( '<a href=%s>', esc_url( admin_url( 'edit-tags.php?taxonomy=post_tag' ) ) ), '</a>' ) . '</p>';
		}
		return $labels;
	}
}

if ( ! function_exists( 'mltlngg_get_switcher_block' ) ) {
	/**
	 * Get block for lang switcher
	 *
	 * @param mixed $mltlngg_language_switcher (Optional) Lang switcher type.
	 * @return string $switcher Switcher block.
	 */
	function mltlngg_get_switcher_block( $mltlngg_language_switcher = false ) {
		global $mltlngg_current_language, $mltlngg_get_default_language, $mltlngg_enabled_languages, $current_blog, $mltlngg_options, $wp_customize;

		if ( ! $mltlngg_language_switcher ) {
			$mltlngg_language_switcher = $mltlngg_options['language_switcher'];
		}

		if ( is_array( $mltlngg_language_switcher ) && isset( $mltlngg_language_switcher['layout'] ) ) {
			$mltlngg_language_switcher = $mltlngg_language_switcher['layout'];
		}

		$switcher = '';
		/* Language switcher style */
		switch ( $mltlngg_language_switcher ) {
			case 'drop-down-titles':
				$options = '';
				foreach ( $mltlngg_enabled_languages as $item ) {
					if ( $item['locale'] !== $mltlngg_current_language ) {
						$options .= '<li>
							<button class="mltlngg-lang-button-icons" name="mltlngg_change_display_lang" value="' . $item['locale'] . '" title="' . $item['name'] . '">'
								. $item['name'] .
							'</button>
						</li>';
					} else {
						$current_language_name = $item['name'];
					}
				}
				$switcher .=
					'<ul class="mltlngg-lang-switch mltlngg-lang-switch-names">
						<li>
							<a>' . $current_language_name . '</a>
							<ul>' . $options . '</ul>
						</li>
					</ul>';
				break;
			case 'drop-down-icons':
				$options = '';
				foreach ( $mltlngg_enabled_languages as $item ) {
					if ( $item['locale'] !== $mltlngg_current_language ) {
						$flag     = ( empty( $item['flag'] ) ) ? plugins_url( 'images/flags/', __FILE__ ) . $item['locale'] . '.png' : $item['flag'];
						$options .= '<li>
							<button class="mltlngg-lang-button-icons" name="mltlngg_change_display_lang" value="' . $item['locale'] . '" title="' . $item['name'] . '">
								<img class="mltlngg-lang" src="' . $flag . '" alt="' . $item['name'] . '">
							</button>
						</li>';
					} else {
						$current_language_flag = ( empty( $item['flag'] ) ) ? plugins_url( 'images/flags/', __FILE__ ) . $item['locale'] . '.png' : $item['flag'];
					}
				}
				$switcher .=
					'<ul class="mltlngg-lang-switch">
						<li>
							<img src="' . $current_language_flag . '">
							<ul>' . $options . '</ul>
						</li>
					</ul>';
				break;
			case 'list-flag-title':
				$options = '';
				foreach ( $mltlngg_enabled_languages as $item ) {
					if ( $item['locale'] !== $mltlngg_current_language ) {
						$flag     = ( empty( $item['flag'] ) ) ? plugins_url( 'images/flags/', __FILE__ ) . $item['locale'] . '.png' : $item['flag'];
						$options .= '<div class="mltlngg-lang-' . $item['locale'] . '">
							<button class="mltlngg-lang-button-icons" name="mltlngg_change_display_lang" value="' . $item['locale'] . '" title="' . $item['name'] . '">
								<img class="mltlngg-lang" src="' . $flag . '" alt="' . $item['name'] . '"> ' . $item['name'] .
							'</button>
						</div>';
					} else {
						$current_language_flag = '<div class="mltlngg-lang-current"><img src="' . ( empty( $item['flag'] ) ? plugins_url( 'images/flags/', __FILE__ ) . $item['locale'] . '.png' : $item['flag'] ) . '" /> ' . $item['name'] . '</div>';
					}
				}
				$switcher .=
					'<div class="mltlngg-lang-switch list-format">' . $current_language_flag . $options . '</div>';
				break;
			case 'list-titles':
				$options = '';
				foreach ( $mltlngg_enabled_languages as $item ) {
					if ( $item['locale'] !== $mltlngg_current_language ) {
						$flag     = ( empty( $item['flag'] ) ) ? plugins_url( 'images/flags/', __FILE__ ) . $item['locale'] . '.png' : $item['flag'];
						$options .= '<div>
							<button class="mltlngg-lang-button-icons" name="mltlngg_change_display_lang" value="' . $item['locale'] . '" title="' . $item['name'] . '">'
								. $item['name'] .
							'</button>
						</div>';
					} else {
						$current_language_name = '<div class="mltlngg-lang-current">' . $item['name'] . '</div>';
					}
				}
				$switcher .=
					'<div class="mltlngg-lang-switch list-format">' . $current_language_name . ' ' . $options . '</div>';
				break;
			case 'list-short-title':
				$options = '';
				foreach ( $mltlngg_enabled_languages as $item ) {
					if ( $item['locale'] !== $mltlngg_current_language ) {
						$flag     = ( empty( $item['flag'] ) ) ? plugins_url( 'images/flags/', __FILE__ ) . $item['locale'] . '.png' : $item['flag'];
						$options .= '<div class="mltlngg-lang-' . $item['locale'] . '">
							<button class="mltlngg-lang-button-icons" name="mltlngg_change_display_lang" value="' . $item['locale'] . '" title="' . strtoupper( $item['locale'] ) . '">'
								. strtoupper( $item['locale'] ) .
							'</button>
						</div>';
					} else {
						$current_language_name = '<div class="mltlngg-lang-current">' . strtoupper( $item['locale'] ) . '</div>';
					}
				}
				$switcher .=
					'<div class="mltlngg-lang-switch list-format">' . $current_language_name . ' ' . $options . '</div>';
				break;
			case 'flags-icons':
				foreach ( $mltlngg_enabled_languages as $item ) {
					$flag      = ( empty( $item['flag'] ) ) ? plugins_url( 'images/flags/', __FILE__ ) . $item['locale'] . '.png' : $item['flag'];
					$switcher .=
						'<button class="mltlngg-lang-button-icons" name="mltlngg_change_display_lang" value="' . $item['locale'] . '" title="' . $item['name'] . '">
							<img class="' . ( $item['locale'] === $mltlngg_current_language ? 'mltlngg-current-lang' : 'mltlngg-lang' ) . '" src="' . $flag . '" alt="' . $item['name'] . '">
						</button>';
				}
				break;
			case 'gt':
				$switcher .= '<div id="mltlngg_google_switcher"></div>';
				mltlngg_enqueue_google_script( 'dropdown' );
				break;
			case 'gt-horizontal':
				$switcher .= '<div id="mltlngg_google_switcher"></div>';
				mltlngg_enqueue_google_script( 'horizontal' );
				break;
			case 'gt-vertical':
				$switcher .= '<div id="mltlngg_google_switcher"></div>';
				mltlngg_enqueue_google_script( 'vertical' );
				break;
			case 'drop-down-list':
			default:
				$options = '';
				foreach ( $mltlngg_enabled_languages as $item ) {
					if ( $item['locale'] !== $mltlngg_current_language ) {
						$flag     = ( empty( $item['flag'] ) ) ? plugins_url( 'images/flags/', __FILE__ ) . $item['locale'] . '.png' : $item['flag'];
						$options .= '<li>
							<button class="mltlngg-lang-button-icons" name="mltlngg_change_display_lang" value="' . $item['locale'] . '" title="' . $item['name'] . '">
								<img class="mltlngg-lang" src="' . $flag . '" alt="' . $item['name'] . '"> ' . $item['name'] .
							'</button>
						</li>';
					} else {
						$current_language_name = $item['name'];
						$current_language_flag = ( empty( $item['flag'] ) ) ? plugins_url( 'images/flags/', __FILE__ ) . $item['locale'] . '.png' : $item['flag'];
					}
				}
				$switcher .=
					'<ul class="mltlngg-lang-switch mltlngg-lang-switch-names">
						<li>
							<a>
								<img src="' . $current_language_flag . '"> ' . $current_language_name .
							'</a>
							<ul>' . $options . '</ul>
						</li>
					</ul>';
				break;
		}

		if ( ! in_array( $mltlngg_language_switcher, array( 'gt', 'gt-horizontal', 'gt-vertical' ), true ) ) {
			$switcher = '<form class="mltlngg_switcher" name="mltlngg_change_language" method="post" action="">' . $switcher . '</form>';
		}

		return $switcher;
	}
}

if ( ! function_exists( 'mltlngg_display_switcher' ) ) {
	/**
	 * Display lang switcher
	 */
	function mltlngg_display_switcher() {
		echo wp_kses_post( mltlngg_get_switcher_block() );
	}
}

if ( ! function_exists( 'mltlngg_settings_page' ) ) {
	/**
	 * Display settings page of plugin
	 */
	function mltlngg_settings_page() {
		global $wpdb, $mltlngg_options, $mltlngg_languages, $mltlngg_plugin_info;
		if ( ! class_exists( 'Bws_Settings_Tabs' ) ) {
			require_once dirname( __FILE__ ) . '/bws_menu/class-bws-settings.php';
		}
		require_once dirname( __FILE__ ) . '/includes/class-mltlngg-settings.php';
		$page = new Mltlngg_Settings_Tabs( plugin_basename( __FILE__ ) );
		if ( method_exists( $page, 'add_request_feature' ) ) {
			$page->add_request_feature();
		}
		?>
		<div class="wrap" id="mltlngg-settings">
			<?php if ( isset( $_GET['page'] ) && 'mltlngg_settings' === sanitize_text_field( wp_unslash( $_GET['page'] ) ) ) { /* Showing settings tab */ ?>
				<h1>Multilanguage <?php esc_html_e( 'Settings', 'multilanguage' ); ?></h1>
				<?php
				$page->display_content();
			} else {
				mltlngg_table();
				bws_plugin_reviews_block( $mltlngg_plugin_info['Name'], 'multilanguage' );
			}
			?>
		</div>
		<?php
	}
}

if ( ! function_exists( 'mltlngg_showup_language_tabs_in_editor' ) ) {
	/**
	 * Adding to post/page editor tabs in enabled languages
	 */
	function mltlngg_showup_language_tabs_in_editor() {
		global $wpdb, $post, $mltlngg_options, $mltlngg_language, $mltlngg_active_language, $mltlngg_current_language, $mltlngg_enabled_languages, $mltlngg_get_default_language;

		$current_posttype = get_post_type( $post->ID );
		$check_posttype   = ( 'post' === $current_posttype || 'page' === $current_posttype );
		$check_posttype   = apply_filters( 'mltlngg_posttype_compability', $check_posttype, $current_posttype );

		if ( $check_posttype ) {
			$original_data = $wpdb->get_row(
				$wpdb->prepare(
					"SELECT `post_content`, `post_title`, `post_excerpt`
				FROM $wpdb->posts
				WHERE `ID` = %d",
					$post->ID
				),
				ARRAY_A
			); /* Get original Content & Title for save to hidden fields */
			?>
			<!-- Display tabs in editor for all enabled languages -->
			<div id="mltlngg-overlay">
				<div class="mltlngg_backdrop"></div>
				<div class="mltlngg_loader"></div>
			</div>
			<h2 id="get-lang-content" class="mltlngg-nav-tab-wrapper nav-tab-wrapper">
				<?php
				foreach ( $mltlngg_enabled_languages as $mltlngg_language ) {
					if ( ( isset( $_SESSION['current_language'] ) && $_SESSION['current_language'] === $mltlngg_language['locale'] ) || ( ! isset( $_SESSION['current_language'] ) && isset( $_GET['lang'] ) && $mltlngg_language['locale'] === $_GET['lang'] ) || ( ! isset( $_SESSION['current_language'] ) && ! isset( $_GET['lang'] ) && $mltlngg_options['default_language'] === $mltlngg_language['locale'] ) ) {
						$mltlngg_active_class    = 'nav-tab nav-tab-active'; /* Set active language tab */
						$mltlngg_active_language = $mltlngg_language; /* Set active language */
					} else {
						$mltlngg_active_class = 'nav-tab';
					}
					echo '<a class="' . esc_html( $mltlngg_active_class ) . '" href="' . esc_url( get_edit_post_link( $post->ID, '' ) ) . '&lang=' . esc_attr( $mltlngg_language['locale'] ) . '" data-lang="' . esc_attr( $mltlngg_language['locale'] ) . '" value="' . esc_attr( $mltlngg_language['name'] ) . '">' . esc_html( $mltlngg_language['name'] ) . '</a>';
				}
				unset( $_SESSION['current_language'] );
				?>
				<a class="mltlngg_add" href="admin.php?page=multilanguage-languages.php"><?php esc_html_e( 'Add Language', 'multilanguage' ); ?></a>
			</h2> <!-- #get-lang-content .nav-tab-wrapper -->
			<?php
			/* compability with DIVI Builder */
			if ( 'ajax' !== $mltlngg_options['save_mode'] || defined( 'ET_BUILDER_THEME' ) || defined( 'WPB_VC_VERSION' ) ) {
				?>
				<div id="mltlngg-disable-ajax-tabs" class="notice notice-info inline hide-if-no-js" style="margin: 0;">
					<p><strong><?php esc_html_e( 'Attention', 'multilanguage' ); ?></strong>: <?php esc_html_e( 'Please update the post before switching the language. Data is not saved automatically.', 'multilanguage' ); ?></p>
				</div>
			<?php } ?>
			<h2>
				<?php esc_html_e( 'Edit for language', 'multilanguage' ); ?>:
				<span id="mltlngg-current-lang"><?php echo esc_html( $mltlngg_active_language['name'] ); ?></span>
			</h2>
			<?php wp_nonce_field( 'mltlngg_translate_form', 'mltlngg_translate_form_field' ); ?>
			<!-- Hidden fields with original Title, Content & Active language -->
			<?php
			if ( is_admin() ) {
				$mltlngg_current_language = ( isset( $_GET['lang'] ) ) ? sanitize_text_field( wp_unslash( $_GET['lang'] ) ) : ( ( isset( $mltlngg_active_language['locale'] ) ) ? $mltlngg_active_language['locale'] : $mltlngg_options['default_language'] );
			}
			?>
			<input id="title-<?php echo esc_attr( $mltlngg_options['default_language'] ); ?>" type="hidden" value="<?php echo esc_html( $original_data['post_title'] ); ?>" name="title_<?php echo esc_attr( $mltlngg_options['default_language'] ); ?>">
			<textarea id="content-<?php echo esc_attr( $mltlngg_options['default_language'] ); ?>" style="display: none;" name="content_<?php echo esc_attr( $mltlngg_options['default_language'] ); ?>"><?php echo esc_html( $original_data['post_content'] ); ?></textarea>
			<input id="excerpt-<?php echo esc_attr( $mltlngg_options['default_language'] ); ?>" type="hidden" value="<?php echo esc_html( $original_data['post_excerpt'] ); ?>" name="excerpt_<?php echo esc_attr( $mltlngg_options['default_language'] ); ?>">
			<input id="mltlngg-active-language" type="hidden" value="<?php echo esc_attr( $mltlngg_active_language['locale'] ); ?>" name="mltlngg_active_language">
			<?php
		}
	}
}

if ( ! function_exists( 'mltlngg_is_gutenberg_active' ) ) {
	/**
	 * Check if Block editor is active.
	 *
	 * @return bool
	 */
	function mltlngg_is_gutenberg_active() {
		if ( ! is_admin() ) {
			return false;
		}

		/* Gutenberg plugin is installed and activated. */
		if ( function_exists( 'is_gutenberg_page' ) && is_gutenberg_page() ) {
			/* The Gutenberg plugin is on. */
			return true;
		}

		if ( function_exists( 'get_current_screen' ) ) {
			$current_screen = get_current_screen();

			if ( method_exists( $current_screen, 'is_block_editor' ) && $current_screen->is_block_editor() ) {
				/* Gutenberg/Block editor since 5.0. */
				return true;
			}
		}

		return false;
	}
}

if ( ! function_exists( 'mltlngg_is_rest_api' ) ) {
	/**
	 * Function for save post in Gutenberg
	 */
	function mltlngg_is_rest_api() {
		global $wpdb;
		/**
		 * Gutenberg save post
		 * If REST_REQUEST is defined (by WordPress) and is a TRUE, then it's a REST API request. - defined( 'REST_REQUEST' ) return false here
		 * the save feature in Gutenberg is done using the REST API, and because of how is_admin() works checking it won’t work. defined( 'DOING_AJAX' ) && DOING_AJAX also won’t work
		 */
		$post_types_ajax = $wpdb->get_col( "SELECT DISTINCT `post_type` FROM {$wpdb->prefix}posts WHERE `post_status` = 'publish'" );

		if ( ! empty( $_SERVER['REQUEST_URI'] ) ) {
			foreach ( $post_types_ajax as $post_type ) {
				if ( strpos( sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ), $post_type ) !== false ) {
					return true;
				}
			}
		}
		return false;
	}
}

if ( ! function_exists( 'mltlngg_save_post' ) ) {
	/**
	 * Function for save post/page changes to translations tables
	 *
	 * @param int $post_id Post ID.
	 */
	function mltlngg_save_post( $post_id ) {
		global $wpdb, $mltlngg_options;

		$current_posttype = get_post_type( $post_id );
		$check_posttype   = ( 'post' === $current_posttype || 'page' === $current_posttype );
		$check_posttype   = apply_filters( 'mltlngg_posttype_compability', $check_posttype, $current_posttype );
		if ( $check_posttype ) {
			if ( ( isset( $_POST['save'] ) || isset( $_POST['publish'] ) ) && isset( $_POST['mltlngg_active_language'] ) && check_admin_referer( 'mltlngg_translate_form', 'mltlngg_translate_form_field' ) ) {
				$_SESSION['current_language'] = sanitize_text_field( wp_unslash( $_POST['mltlngg_active_language'] ) );

				/* If autosave option is disabled save all changes */
				if ( 'ajax' !== $mltlngg_options['save_mode'] ) {
					/* Formation of a new array with the translation data from all hidden fields */
					$mltlngg_translate_data = array();
					foreach ( $_POST as $key => $value ) {
						if ( preg_match( '/^(title|content|excerpt)[_]([a-z]{2,3}|[a-z]{2,3}[_][A-Z]{2,3})$/', $key, $matches ) ) { /* Search POST with Title or Content */
							$mltlngg_translate_data[ $matches[2] ]['lang']        = $matches[2]; /* Language code */
							$mltlngg_translate_data[ $matches[2] ][ $matches[1] ] = $value; /* Title or Content or Excerpt*/
						}
					}
					/* Save the translation data from new array */
					foreach ( $mltlngg_translate_data as $mltlngg_translate ) {
						if ( sanitize_text_field( wp_unslash( $_POST['mltlngg_active_language'] ) ) !== $mltlngg_translate['lang'] ) {
							/* If active language tab same as default language do not save changes */

							/* Get translation data for current language from database */
							$mltlngg_result = $wpdb->get_row(
								$wpdb->prepare(
									'SELECT *
								 FROM `' . $wpdb->prefix . 'mltlngg_translate`
								 WHERE `post_ID` = %d AND `language` = %s
								',
									$post_id,
									$mltlngg_translate['lang']
								),
								ARRAY_A
							);
							$excerpt        = isset( $mltlngg_translate['excerpt'] ) ? $mltlngg_translate['excerpt'] : '';
							if ( isset( $mltlngg_result['post_content'] ) && isset( $mltlngg_result['post_title'] ) ) { /* If translation is exist in database, update translation */
								if ( $mltlngg_translate['content'] !== $mltlngg_result['post_content'] || $mltlngg_translate['title'] !== $mltlngg_result['post_title'] || $excerpt !== $mltlngg_result['post_excerpt'] ) {
									$wpdb->update(
										$wpdb->prefix . 'mltlngg_translate',
										array(
											'post_content' => sanitize_post_field( 'post_content', wp_unslash( $mltlngg_translate['content'] ), 0, 'db' ),
											'post_title'   => sanitize_text_field( wp_unslash( $mltlngg_translate['title'] ) ),
											'post_excerpt' => sanitize_text_field( wp_unslash( $excerpt ) ),
										),
										array(
											'post_ID'  => $post_id,
											'language' => $mltlngg_translate['lang'],
										),
										array( '%s', '%s', '%s' ),
										array( '%d', '%s' )
									);
								}
							} elseif ( '' !== $mltlngg_translate['content'] || '' !== $mltlngg_translate['title'] ) {
								/* If translation is not exist in database, create translation */
								$wpdb->insert(
									$wpdb->prefix . 'mltlngg_translate',
									array(
										'post_ID'      => $post_id,
										'post_content' => sanitize_post_field( 'post_content', wp_unslash( $mltlngg_translate['content'] ), 0, 'db' ),
										'post_title'   => sanitize_text_field( wp_unslash( $mltlngg_translate['title'] ) ),
										'post_excerpt' => sanitize_text_field( wp_unslash( $excerpt ) ),
										'language'     => $mltlngg_translate['lang'],
									),
									array( '%d', '%s', '%s', '%s', '%s' )
								);
							}
						}
					}
					do_action( 'mltlngg_off_ajax_save', $post_id );
				}
				/* Save the translation data from active language tab */

				/* Get translation data for current language from database */
				$mltlngg_result = $wpdb->get_row(
					$wpdb->prepare(
						'SELECT *
						 FROM `' . $wpdb->prefix . 'mltlngg_translate`
						 WHERE `post_ID` = %d AND `language` = %s
						',
						$post_id,
						sanitize_text_field( wp_unslash( $_POST['mltlngg_active_language'] ) )
					),
					ARRAY_A
				);

				$excerpt = isset( $_POST['excerpt'] ) ? sanitize_text_field( wp_unslash( $_POST['excerpt'] ) ) : '';

				if ( isset( $mltlngg_result['post_content'] ) && isset( $mltlngg_result['post_title'] ) ) { /* If translation is exist in database, update translation */
					if ( ( isset( $_POST['content'] ) && $_POST['content'] !== $mltlngg_result['post_content'] ) || ( isset( $_POST['post_title'] ) && $_POST['post_title'] !== $mltlngg_result['post_title'] ) || $excerpt !== $mltlngg_result['post_excerpt'] ) {
						$wpdb->update(
							$wpdb->prefix . 'mltlngg_translate',
							array(
								'post_content' => sanitize_post_field( 'post_content', wp_unslash( $_POST['content'] ), 0, 'db' ),
								'post_title'   => sanitize_text_field( wp_unslash( $_POST['post_title'] ) ),
								'post_excerpt' => $excerpt,
							),
							array(
								'post_ID'  => $post_id,
								'language' => sanitize_text_field( wp_unslash( $_POST['mltlngg_active_language'] ) ),
							),
							array( '%s', '%s', '%s' ),
							array( '%d', '%s' )
						);
					}
				} else { /* If translation is not exist in database, create translation */
					$wpdb->insert(
						$wpdb->prefix . 'mltlngg_translate',
						array(
							'post_ID'      => $post_id,
							'post_content' => sanitize_post_field( 'post_content', wp_unslash( $_POST['content'] ), 0, 'db' ),
							'post_title'   => sanitize_text_field( wp_unslash( $_POST['post_title'] ) ),
							'post_excerpt' => wp_specialchars_decode( $excerpt, ENT_COMPAT ),
							'language'     => sanitize_text_field( wp_unslash( $_POST['mltlngg_active_language'] ) ),
						),
						array( '%d', '%s', '%s', '%s', '%s' )
					);
				}

				/* Save Title & Content to original post */
				if ( $mltlngg_options['default_language'] !== $_POST['mltlngg_active_language'] && isset( $_POST[ 'title_' . $mltlngg_options['default_language'] ] ) && isset( $_POST[ 'content_' . $mltlngg_options['default_language'] ] ) ) {
					$default_excerpt = isset( $_POST[ 'excerpt_' . $mltlngg_options['default_language'] ] ) ? sanitize_text_field( wp_unslash( $_POST[ 'excerpt_' . $mltlngg_options['default_language'] ] ) ) : '';
					$post            = array(
						'ID'           => $post_id,
						'post_title'   => wp_specialchars_decode( sanitize_text_field( wp_unslash( $_POST[ 'title_' . $mltlngg_options['default_language'] ] ), ENT_COMPAT ) ),
						'post_excerpt' => wp_specialchars_decode( $default_excerpt, ENT_COMPAT ),
						'post_content' => wp_specialchars_decode( sanitize_post_field( 'post_content', wp_unslash( $_POST[ 'content_' . $mltlngg_options['default_language'] ] ), ENT_COMPAT ), 0, 'db' ),
					);
				} else {
					$post = array(
						'ID'           => $post_id,
						'post_title'   => wp_specialchars_decode( sanitize_text_field( wp_unslash( $_POST['post_title'] ) ) ),
						'post_excerpt' => wp_specialchars_decode( $excerpt, ENT_COMPAT ),
						'post_content' => wp_specialchars_decode( sanitize_post_field( 'post_content', wp_unslash( $_POST['content'] ), 0, 'db' ), ENT_COMPAT ),
					);
				}
				/* function for saving custom fields (default WP field) */
				do_action( 'mltlngg_saving_custom_fields', $post_id );
				remove_action( 'save_post', 'mltlngg_save_post' );
				wp_update_post( $post );
				add_action( 'save_post', 'mltlngg_save_post' );
			}
		}
	}
}

if ( ! function_exists( 'mltlngg_rest_after_insert_post' ) ) {
	/**
	 * Callback function for REST API (gutenberg saving post use it)
	 *
	 * @param object $post     Post object.
	 * @param array  $request  Request array.
	 * @param bool   $creating Flag for status post.
	 */
	function mltlngg_rest_after_insert_post( $post, $request, $creating ) {
		global $wpdb, $mltlngg_get_default_language;

		if ( isset( $_COOKIE['mltlngg_language'] ) && $_COOKIE['mltlngg_language'] !== $mltlngg_get_default_language ) {

			$default_language_data = $wpdb->get_row(
				$wpdb->prepare(
					'SELECT *
				 FROM `' . $wpdb->prefix . 'mltlngg_translate`
				 WHERE `post_ID` = %d AND `language` = %s
				',
					$post->ID,
					$mltlngg_get_default_language
				)
			);

			if ( ! empty( $default_language_data ) && ! empty( $post_slug ) ) {
				$wpdb->update(
					$wpdb->posts,
					array(
						'post_content' => $default_language_data->post_content,
						'post_title'   => $default_language_data->post_title,
						'post_excerpt' => $default_language_data->post_excerpt,
					),
					array(
						'ID' => $post->ID,
					),
					array( '%s', '%s', '%s' ),
					array( '%d' )
				);
			}
		}
	}
}

if ( ! function_exists( 'mltlngg_ajax_callback' ) ) {
	/**
	 * Callback function for AJAX function
	 */
	function mltlngg_ajax_callback() {
		global $wpdb, $mltlngg_options, $wp_version;
		check_ajax_referer( 'mltlngg-ajax-nonce', 'security' );

		if ( empty( $_POST['mltlngg_post_id'] ) ) {
			die();
		}

		$mltlngg_old_excerpt = isset( $_POST['mltlngg_old_excerpt'] ) ? sanitize_post_field( 'post_content', wp_unslash( $_POST['mltlngg_old_excerpt'] ), 0, 'db' ) : '';
		$post_id             = absint( wp_unslash( $_POST['mltlngg_post_id'] ) );
		/* Auto-update translation if it has been changed when autosave option is enabled */
		if ( ! empty( $_POST['old_lang'] ) && ( 'ajax' === $mltlngg_options['save_mode'] || ! empty( $_POST['is_gutenberg'] ) ) ) {
			/* Get translation data for previous language from database */
			$mltlngg_result_old = $wpdb->get_row(
				$wpdb->prepare(
					'SELECT *
				 FROM `' . $wpdb->prefix . 'mltlngg_translate`
				 WHERE `post_ID` = %d AND `language` = %s
				',
					$post_id,
					sanitize_post_field( 'post_content', wp_unslash( $_POST['old_lang'] ), 0, 'db' )
				),
				ARRAY_A
			);
			if ( isset( $mltlngg_result_old['post_content'] ) && isset( $mltlngg_result_old['post_title'] ) ) {
				/* If translation is exist in database, update translation */
				if ( ( isset( $_POST['mltlngg_old_content'] ) && $_POST['mltlngg_old_content'] !== $mltlngg_result_old['post_content'] ) || ( isset( $_POST['mltlngg_old_title'] ) && $_POST['mltlngg_old_title'] !== $mltlngg_result_old['post_title'] ) || $mltlngg_old_excerpt !== $mltlngg_result_old['post_excerpt'] ) {
					$wpdb->update(
						$wpdb->prefix . 'mltlngg_translate',
						array(
							'post_content' => sanitize_post_field( 'post_content', wp_unslash( $_POST['mltlngg_old_content'] ), 0, 'db' ),
							/*'post_content' => htmlentities( wp_unslash( $_POST['mltlngg_old_content'] ) ), */
							'post_title'   => sanitize_text_field( wp_unslash( $_POST['mltlngg_old_title'] ) ),
							'post_excerpt' => $mltlngg_old_excerpt,
						),
						array(
							'post_ID'  => $post_id,
							'language' => sanitize_text_field( wp_unslash( $_POST['old_lang'] ) ),
						),
						array( '%s', '%s', '%s' ),
						array( '%d', '%s' )
					);
				}
			} elseif ( '' !== $_POST['mltlngg_old_content'] || '' !== $_POST['mltlngg_old_title'] ) {
				/* If translation not exist in database, create translation */
				$wpdb->insert(
					$wpdb->prefix . 'mltlngg_translate',
					array(
						'post_ID'      => $post_id,
						'post_content' => sanitize_post_field( 'post_content', wp_unslash( $_POST['mltlngg_old_content'] ), 0, 'db' ),
						'post_title'   => sanitize_text_field( wp_unslash( $_POST['mltlngg_old_title'] ) ),
						'post_excerpt' => $mltlngg_old_excerpt,
						'language'     => sanitize_text_field( wp_unslash( $_POST['old_lang'] ) ),
					),
					array( '%d', '%s', '%s', '%s', '%s' )
				);
			}
			do_action( 'mltlngg_request_for_custom_save', $post_id, $mltlngg_options );
		}

		$mltlngg_ajax_results = array();
		do_action( 'mltlngg_request_for_translation_language', $post_id );
		/* If received request for a translation for current language */
		if ( isset( $_POST['get_data'] ) && ! empty( $_POST['new_lang'] ) ) {
			if ( ! empty( $_POST['is_gutenberg'] ) && '5.9' > $wp_version ) {
				mltlngg_setcookie( sanitize_text_field( wp_unslash( $_POST['new_lang'] ) ) );
			}

			$mltlngg_new_cat_data = array( 'cat_translate' => '' );

			 /* Get translation data for current language from database */
			$mltlngg_post_data = $wpdb->get_row(
				$wpdb->prepare(
					'SELECT *
					 FROM `' . $wpdb->prefix . 'mltlngg_translate`
					 WHERE `post_ID` = %d AND `language` = %s
					',
					$post_id,
					sanitize_text_field( wp_unslash( $_POST['new_lang'] ) )
				),
				ARRAY_A
			);
			if ( isset( $_POST['cat_id'] ) ) {
				$mltlngg_cat_data = $wpdb->get_results(
					$wpdb->prepare(
						'SELECT *
						 FROM `' . $wpdb->prefix . 'mltlngg_terms_translate`
						 WHERE `language` = %s
						',
						sanitize_text_field( wp_unslash( $_POST['new_lang'] ) )
					),
					ARRAY_A
				); /* Get translation data for current language from database */
			}

			if ( ! empty( $mltlngg_cat_data ) ) {
				foreach ( $mltlngg_cat_data as $value ) {
					if ( in_array( $value['term_ID'], $_POST['cat_id'], true ) ) {
						$mltlngg_new_cat_mame[ $value['term_ID'] ] = $value['name'];
					}
				}
				if ( ! empty( $mltlngg_new_cat_mame ) ) {
					$mltlngg_new_cat_data = array( 'cat_translate' => $mltlngg_new_cat_mame );
				}
			}

			if ( ! ( isset( $mltlngg_post_data['post_content'] ) && isset( $mltlngg_post_data['post_title'] ) ) ) {
				/* If translation is not exist, send empty translation to ajax */
				if ( ! empty( $_POST['is_gutenberg'] ) && $mltlngg_options['default_language'] === $_POST['new_lang'] ) {
					/* get initial data */
					$mltlngg_post_data = $wpdb->get_row(
						$wpdb->prepare(
							"SELECT `post_content`, `post_title`, `post_excerpt`
							FROM $wpdb->posts
							WHERE
								$wpdb->posts.`ID` = %d",
							$post_id
						),
						ARRAY_A
					);
				} else {
					$mltlngg_post_data = array(
						'post_content' => '',
						'post_title'   => '',
						'post_excerpt' => '',
					);
				}
			}

			$mltlngg_post_data = apply_filters( 'mltlngg_add_data_about_custom', $mltlngg_post_data, $post_id );
			/* add comments before our results */
			echo '<!--mltlngg-ajax-results-->';
			echo wp_json_encode( array_merge( $mltlngg_post_data, $mltlngg_new_cat_data, $mltlngg_ajax_results ) );
			/* add comments after our results */
			echo '<!--end-mltlngg-ajax-results-->';
		}
		die();
	}
}

if ( ! function_exists( 'mltlngg_new_terms_translate' ) ) {
	/**
	 * Add translations form in enabled languages to adding new category/tag
	 */
	function mltlngg_new_terms_translate() {
		global $mltlngg_enabled_languages;
		$locale_name = get_locale();
		?>
		<div class="form-field">
			<?php esc_html_e( 'Translations', 'multilanguage' ); ?>
			<!-- Translations form for all enabled languages -->
			<table class="form-table" border="0" style="background-color: #fff; width: 95%;">
				<tbody>
				<?php if ( 1 === count( $mltlngg_enabled_languages ) ) { ?>
					<div class="bws_info"><?php printf( esc_html__( 'Add and enable a new language using %1$s the Languages page.%2$s', 'multilanguage' ), wp_sprintf( '<a href=%s>', esc_url( 'admin.php?page=multilanguage-languages.php' ) ), '</a>' ); ?></div>
				<?php } ?>

				<?php
				foreach ( $mltlngg_enabled_languages as $one_language ) {
					$flag = ( empty( $one_language['flag'] ) ) ? plugins_url( 'images/flags/', __FILE__ ) . $one_language['locale'] . '.png' : $one_language['flag'];
					?>
					<tr class="form-field" 
					<?php
					if ( $locale_name === $one_language['locale'] ) {
						echo 'style="display:none"';
					}
					?>
					>
						<td>
							<label for="mltlngg_translate_<?php echo esc_attr( $one_language['locale'] ); ?>"><img style="margin: auto 5px;" src="<?php echo esc_url( $flag ); ?>" alt="<?php echo esc_attr( $one_language['name'] ); ?>" title="<?php echo esc_html( $one_language['name'] ); ?>" /><?php echo esc_html( $one_language['name'] ); ?></label>
						</td>
						<td>
							<input type="text" aria-required="true" size="40" value="" id="mltlngg_translate_<?php echo esc_attr( $one_language['locale'] ); ?>" name="mltlngg_translate_<?php echo esc_attr( $one_language['locale'] ); ?>">
						</td>
					</tr>
				<?php } ?>
				</tbody>
			</table><!-- .form-table -->
			<?php wp_nonce_field( 'mltlngg_translate_terms_form', 'mltlngg_translate_terms_form_field' ); ?>
		</div><!-- .form-field -->
		<?php
	}
}

if ( ! function_exists( 'mltlngg_new_terms_created' ) ) {
	/**
	 * Function for create new category/tag with translations
	 *
	 * @param int $term_id Term ID.
	 */
	function mltlngg_new_terms_created( $term_id ) {
		global $wpdb, $mltlngg_enabled_languages;
		$locale_name = get_locale();
		foreach ( $mltlngg_enabled_languages as $one_language ) {
			$cat_lang = 'mltlngg_translate_' . $one_language['locale'];
			$cat_name = ( $one_language['locale'] === $locale_name ) ? sanitize_text_field( wp_unslash( $_POST['tag-name'] ) ) : sanitize_text_field( wp_unslash( $_POST[ $cat_lang ] ) );
			if ( isset( $cat_name ) && isset( $_POST[ $cat_lang ] ) && '' !== sanitize_text_field( wp_unslash( $_POST[ $cat_lang ] ) ) ) { /* If translation is empty, do not create translation in database */
				$wpdb->insert(
					$wpdb->prefix . 'mltlngg_terms_translate',
					array(
						'term_ID'  => $term_id,
						'name'     => $cat_name,
						'language' => $one_language['locale'],
					),
					array( '%d', '%s', '%s' )
				);
			}
		}
	}
}

if ( ! function_exists( 'mltlngg_terms_translate' ) ) {
	/**
	 * Adding translations form for all enabled languages to edit category/tag
	 */
	function mltlngg_terms_translate() {
		global $tag_ID, $wpdb, $mltlngg_enabled_languages;
		$locale_name  = get_locale();
		$mltlngg_term = array();
		foreach ( $mltlngg_enabled_languages as $one_language ) {
			/* Get terms translations from database */
			$mltlngg_term_result = $wpdb->get_row(
				$wpdb->prepare(
					'SELECT *
				 FROM `' . $wpdb->prefix . 'mltlngg_terms_translate`
				 WHERE `term_ID` = %d AND `language` = %s
				',
					$tag_ID,
					$one_language['locale']
				),
				ARRAY_A
			);
			if ( ! empty( $mltlngg_term_result ) ) {
				$mltlngg_term[ $one_language['locale'] ] = $mltlngg_term_result['name'];
			} else {
				$mltlngg_term[ $one_language['locale'] ] = '';
			}
		}
		?>
		<table class="form-table">
			<tbody>
			<tr class="form-field">
				<th scope="row"><?php esc_html_e( 'Translations', 'multilanguage' ); ?></th>
				<td>
					<table class="form-table" border="0" style="background-color: #fff; width: 95%;">
						<tbody>
						<?php if ( 1 === count( $mltlngg_enabled_languages ) ) { ?>
							<div class="bws_info"><?php printf( esc_html__( 'Add and enable a new language using %1$s the Languages page.%2$s', 'multilanguage' ), wp_sprintf( '<a href=%s>', esc_url( 'admin.php?page=multilanguage-languages.php' ) ), '</a>' ); ?></div>
						<?php } ?>

						<?php
						foreach ( $mltlngg_enabled_languages as $one_language ) {
							$flag = ( empty( $one_language['flag'] ) ) ? plugins_url( 'images/flags/', __FILE__ ) . $one_language['locale'] . '.png' : $one_language['flag'];
							?>
							<tr class="form-field" 
							<?php
							if ( $locale_name === $one_language['locale'] ) {
								echo 'style="display:none"';
							}
							?>
								>
								<td>
									<label for="mltlngg_translate_<?php echo esc_attr( $one_language['locale'] ); ?>"><img style="margin: auto 5px;" src="<?php echo esc_url( $flag ); ?>" alt="<?php echo esc_attr( $one_language['name'] ); ?>" title="<?php echo esc_html( $one_language['name'] ); ?>" /><?php echo esc_attr( $one_language['name'] ); ?></label>
								</td>
								<td>
									<input type="text" aria-required="true" size="40" value="<?php echo esc_attr( $mltlngg_term[ $one_language['locale'] ] ); ?>" id="mltlngg_translate_<?php echo esc_attr( $one_language['locale'] ); ?>" name="mltlngg_translate_<?php echo esc_attr( $one_language['locale'] ); ?>">
								</td>
							</tr>
						<?php } ?>
						</tbody>
					</table><!-- .form-table -->
				</td>
			</tr>
			</tbody>
		</table><!-- .form-table -->
		<?php
		wp_nonce_field( 'mltlngg_translate_terms_form', 'mltlngg_translate_terms_form_field' );
	}
}

if ( ! function_exists( 'mltlngg_terms_update' ) ) {
	/**
	 * Function for update translations of category/tag
	 */
	function mltlngg_terms_update() {
		global $tag_ID, $wpdb, $mltlngg_enabled_languages;
		$locale_name = get_locale();
		if ( isset( $_POST['action'] ) && 'inline-save-tax' === sanitize_text_field( wp_unslash( $_POST['action'] ) ) ) {
			$wpdb->update(
				$wpdb->prefix . 'mltlngg_terms_translate',
				array(
					'name' => isset( $_POST['name'] ) ? sanitize_text_field( wp_unslash( $_POST['name'] ) ) : '',
				),
				array(
					'term_ID'  => isset( $_POST['tax_ID'] ) ? absint( $_POST['tax_ID'] ) : '',
					'language' => $locale_name,
				),
				array( '%s' ),
				array( '%d', '%s' )
			);
		}
		if ( check_admin_referer( 'mltlngg_translate_terms_form', 'mltlngg_translate_terms_form_field' ) ) {
			foreach ( $mltlngg_enabled_languages as $one_language ) {
				$cat_lang = 'mltlngg_translate_' . $one_language['locale'];

				$mltlngg_result = $wpdb->get_row(
					$wpdb->prepare(
						'SELECT *
					 FROM `' . $wpdb->prefix . 'mltlngg_terms_translate`
					 WHERE `term_ID` = %d AND `language` = %s
					',
						$tag_ID,
						$one_language['locale']
					),
					ARRAY_A
				); /* Get terms translations from database */
				$cat_name       = ( $mltlngg_result['language'] === $locale_name ) ? sanitize_text_field( wp_unslash( $_POST['name'] ) ) : sanitize_text_field( wp_unslash( $_POST[ $cat_lang ] ) );
				if ( isset( $mltlngg_result['name'] ) && ( ( sanitize_text_field( wp_unslash( $_POST[ $cat_lang ] ) ) !== $mltlngg_result['name'] ) || ( $mltlngg_result['language'] === $locale_name ) ) ) { /* If translation is exist in database, update translation */
					$wpdb->update(
						$wpdb->prefix . 'mltlngg_terms_translate',
						array(
							'name' => $cat_name,
						),
						array(
							'term_ID'  => $tag_ID,
							'language' => $one_language['locale'],
						),
						array( '%s' ),
						array( '%d', '%s' )
					);
				} elseif ( ! isset( $mltlngg_result['name'] ) && '' !== sanitize_text_field( wp_unslash( $_POST[ $cat_lang ] ) ) ) {
					/* If translation is not exist in database, create translation */
					$wpdb->insert(
						$wpdb->prefix . 'mltlngg_terms_translate',
						array(
							'term_ID'  => $tag_ID,
							'name'     => $cat_name,
							'language' => $one_language['locale'],
						),
						array( '%d', '%s', '%s' )
					);
				}
			}
		}
	}
}

if ( ! function_exists( 'mltlngg_delete_post' ) ) {
	/**
	 * Function for delete post translations
	 *
	 * @param int $post_id Post ID.
	 */
	function mltlngg_delete_post( $post_id ) {
		global $wpdb;
		$wpdb->query( $wpdb->prepare( 'DELETE FROM `' . $wpdb->prefix . 'mltlngg_translate` WHERE `post_ID` = %d', $post_id ) );
		do_action( 'mltlngg_delete_data', $post_id );
	}
}

if ( ! function_exists( 'mltlngg_delete_term' ) ) {
	/**
	 * Function for delete terms translations
	 *
	 * @param int $term Term ID.
	 */
	function mltlngg_delete_term( $term ) {
		global $wpdb;
		$wpdb->query( $wpdb->prepare( 'DELETE FROM `' . $wpdb->prefix . 'mltlngg_terms_translate` WHERE `term_ID` = %d', $term ) );
	}
}

if ( ! function_exists( 'mltlngg_add_body_classes' ) ) {
	/**
	 * Function for add a class with language name to body
	 *
	 * @param array $classes Body classes array.
	 * @return array $classes
	 */
	function mltlngg_add_body_classes( $classes ) {
		global $mltlngg_current_language;
		if ( ! empty( $mltlngg_current_language ) ) {
			$classes[] = 'mltlngg-' . $mltlngg_current_language;
		}
		return $classes;
	}
}

if ( ! function_exists( 'mltlngg_the_title_filter' ) ) {
	/**
	 * Display post_title in the selected language
	 *
	 * @param string $title   Title string for post.
	 * @param int    $post_id Post ID.
	 * @return string $title
	 */
	function mltlngg_the_title_filter( $title, $post_id = null ) {
		global $mltlngg_options, $wpdb, $mltlngg_current_language, $mltlngg_enabled_languages_locale, $mltlngg_active_language, $post;
		if ( ! empty( $post_id ) ) {
			$id = ( $post_id instanceof WP_Post ) ? $post_id->ID : $post_id;

			/* Do not filter, if a navigation menu */
			if ( ! is_nav_menu_item( $id ) ) {
					$mltlngg_post_type = get_post_type( $id );
					/* If current post type enabled to translation */
					$check_posttype = ( 'post' === $mltlngg_post_type || 'page' === $mltlngg_post_type );
					$check_posttype = apply_filters( 'mltlngg_posttype_compability', $check_posttype, $mltlngg_post_type );
				if ( $check_posttype ) {
					$is_admin = mltlngg_is_admin();
					if ( $is_admin && ! empty( $mltlngg_active_language ) ) {
						$mltlngg_current_language = ( ! empty( $_SESSION['current_language'] ) ) ? sanitize_text_field( wp_unslash( $_SESSION['current_language'] ) ) : ( ( isset( $_GET['lang'] ) && in_array( $_GET['lang'], $mltlngg_enabled_languages_locale, true ) ) ? sanitize_text_field( wp_unslash( $_GET['lang'] ) ) : ( ( ! isset( $_GET['message'] ) ) ? $mltlngg_options['default_language'] : $mltlngg_active_language['locale'] ) );
					}

					$new_title = $wpdb->get_row( $wpdb->prepare( 'SELECT * FROM `' . $wpdb->prefix . 'mltlngg_translate` WHERE `post_ID` = %d AND `language` = %s', $id, $mltlngg_current_language ), ARRAY_A );
					/* If translation is exist and not empty, filter title */
					if ( isset( $new_title['post_title'] ) && '' !== $new_title['post_title'] ) {
						$title = $new_title['post_title'];
						if ( ! $is_admin ) {
							if ( ! empty( $post->post_password ) ) {
								$protected_title_format = apply_filters( 'protected_title_format', esc_html__( 'Protected: %s', 'multilanguage' ), $post );
								$title                  = sprintf( $protected_title_format, $title );
							} elseif ( isset( $post->post_status ) && 'private' === $post->post_status ) {
								$private_title_format = apply_filters( 'private_title_format', esc_html__( 'Private: %s', 'multilanguage' ), $post );
								$title                = sprintf( $private_title_format, $title );
							}
						}
					}
				}
			}
		}
		return $title;
	}
}

if ( ! function_exists( 'mltlngg_wpseo_the_title_filter' ) ) {
	/**
	 * Add wpseo for title
	 *
	 * @param string $title Title string for post.
	 * @return string $title
	 */
	function mltlngg_wpseo_the_title_filter( $title = '' ) {
		global $post;

		if ( isset( $post ) && $post instanceof WP_Post ) {
			$title = mltlngg_the_title_filter( $title, $post->ID );
		}

		return $title;
	}
}

if ( ! function_exists( 'mltlngg_nav_menu_items_filter' ) ) {
	/**
	 * Display nav_menu title in the selected language && Add language switcher to the menu
	 *
	 * @param array $items menu items.
	 * @return array Modified items.
	 */
	function mltlngg_nav_menu_items_filter( $items ) {
		if ( function_exists( 'doing_action' ) && doing_action( 'customize_register' ) ) {
			return $items;
		}

		global $mltlngg_options, $wpdb, $mltlngg_current_language, $mltlngg_enabled_languages, $mltlngg_get_default_language, $mltlngg_enabled_languages_locale;

		$is_admin  = mltlngg_is_admin();
		$new_items = array();
		$offset    = 0;

		foreach ( $items as $key => $item ) {
			if ( 'taxonomy' === $item->type ) {
				$new_title = $wpdb->get_var(
					$wpdb->prepare(
						'SELECT `name`
						 FROM `' . $wpdb->prefix . 'mltlngg_terms_translate`
						 WHERE `term_ID` = %d AND `language` = %s
						',
						$item->object_id,
						$mltlngg_current_language
					)
				);
				if ( isset( $new_title ) && '' !== $new_title ) { /* If translation is exist and not empty, filter menu item */
					$item->title = $new_title;
				}
			} elseif ( 'post_type' === $item->type && ( 'post' === $item->object || 'page' === $item->object ) ) {
				$new_title = $wpdb->get_var(
					$wpdb->prepare(
						'SELECT `post_title`
						 FROM `' . $wpdb->prefix . 'mltlngg_translate`
						 WHERE `post_ID` = %d AND `language` = %s
						',
						$item->object_id,
						$mltlngg_current_language
					)
				);
				if ( isset( $new_title ) && '' !== $new_title ) { /* If translation is exist and not empty, filter menu item */
					$item->title = $new_title;
				}
			}

			/* split the language switcher menu item in several language menu items */
			if ( ! $is_admin && $mltlngg_language_switcher = get_post_meta( $item->ID, '_mltlngg_menu_item', true ) ) {
				$i = 0;

				$is_dropdown = in_array( $mltlngg_language_switcher, array( 'drop-down-icons', 'drop-down-list', 'drop-down-titles' ), true );
				$is_icon     = in_array( $mltlngg_language_switcher, array( 'drop-down-icons', 'aligned-icons' ), true );
				$is_title    = in_array( $mltlngg_language_switcher, array( 'drop-down-titles', 'aligned-titles' ), true );

				$classes = array( 'mltlngg-menu-item' );
				if ( 'drop-down-icons' === $mltlngg_language_switcher ) {
					$classes[] = 'mltlngg-menu-item-icon';
				}
				$classes_current = array( 'mltlngg-menu-item-current' );
				if ( ! $is_dropdown ) {
					$classes_current[] = 'current-menu-item';
				}
				/* main li is a current language */
				foreach ( $mltlngg_enabled_languages as $lang ) {
					if ( $mltlngg_current_language === $lang['locale'] ) {
						$mltlngg_current_language_name = $lang['name'];
						$mltlngg_current_language_flag = ( empty( $lang['flag'] ) ) ? plugins_url( 'images/flags/', __FILE__ ) . $lang['locale'] . '.png' : $lang['flag'];
						break;
					}
				}

				if ( $is_dropdown ) {
					$main_id   = $item->ID;
					$lang_item = clone $item;
					if ( $is_title ) {
						$lang_item->title = esc_html( $mltlngg_current_language_name );
					} else {
						$flag_img         = '<img class="mltlngg-lang" src="' . $mltlngg_current_language_flag . '" alt="' . $mltlngg_current_language_name . '">';
						$lang_item->title = ( $is_icon ) ? $flag_img : $flag_img . '&nbsp;' . esc_html( $mltlngg_current_language_name );
					}
					$lang_item->classes     = array_merge( $classes, $classes_current );
					$lang_item->url         = '#';
					$lang_item->menu_order += $offset + $i++;
					$new_items[]            = $lang_item;
					$offset                += $i - 1;
				}

				foreach ( $mltlngg_enabled_languages as $lang ) {
					if ( $mltlngg_current_language === $lang['locale'] && $is_dropdown ) {
						continue;
					}

					$args = array(
						'lang'  => $lang['locale'],
						'force' => 'display',
					);

					$language_link = mltlngg_get_lang_link( $args );
					$language_link = esc_url( $language_link );

					$lang_item        = clone $item;
					$lang_item->ID    = $lang_item->ID . '-' . $lang['locale'];
					$lang_item->db_id = $lang_item->ID . '-' . $lang['locale'];
					if ( $is_title ) {
						$lang_item->title = esc_html( $lang['name'] );
					} else {
						$flag             = ( empty( $lang['flag'] ) ) ? plugins_url( 'images/flags/', __FILE__ ) . $lang['locale'] . '.png' : $lang['flag'];
						$flag_img         = '<img class="mltlngg-lang" src="' . $flag . '" alt="' . $lang['name'] . '">';
						$lang_item->title = ( $is_icon ) ? $flag_img : $flag_img . '&nbsp;' . esc_html( $lang['name'] );
					}
					if ( $mltlngg_current_language === $lang['locale'] ) {
						$lang_item->classes = array_merge( $classes, $classes_current );
					} else {
						$lang_item->classes = $classes;
					}
					$lang_item->url = $language_link;
					if ( $is_dropdown ) {
						$lang_item->menu_item_parent = $main_id;
					}
					$lang_item->lang        = $lang['locale'];
					$lang_item->menu_order += $offset + $i++;

					$new_items[] = $lang_item;
				}
				$offset += $i - 1;
			} else {
				$item->menu_order += $offset;
				$new_items[]       = $item;
			}
		}
		return $new_items;
	}
}

if ( ! function_exists( 'mltlngg_set_main_content_filter' ) ) {
	/**
	 * Add action to filter the main content in the tinymce editor
	 *
	 * @param object $post menu Post object for editor.
	 */
	function mltlngg_set_main_content_filter( $post ) {
		add_action( 'the_editor_content', 'mltlngg_the_content_filter', 10, 2 );
	}
}

if ( ! function_exists( 'mltlngg_unset_main_content_filter' ) ) {
	/**
	 * Remove action from the tinymce editor
	 *
	 * @param object $post Post object for editor.
	 */
	function mltlngg_unset_main_content_filter( $post ) {
		remove_action( 'the_editor_content', 'mltlngg_the_content_filter', 10, 2 );
	}
}

if ( ! function_exists( 'mltlngg_the_content_filter' ) ) {
	/**
	 * Display post_content in the selected language
	 *
	 * @param string $content        Post content.
	 * @param mixed  $more_link_text Flag for display more link block.
	 * @param bool   $strip_teaser   Flag for strip teaser.
	 * @return string $content
	 */
	function mltlngg_the_content_filter( $content, $more_link_text = null, $strip_teaser = false ) {
		global $hook_suffix, $post, $wpdb, $wp_current_filter, $mltlngg_current_language, $mltlngg_active_language, $mltlngg_options, $wp_list_table;

		$is_admin = mltlngg_is_admin();

		if ( $is_admin && ! ( 'post.php' === $hook_suffix || 'post-new.php' === $hook_suffix ) || empty( $post ) ) {
			return $content;
		}

		/* exclude filter for wp_editor() in 'Add new Comment' block */
		if ( $is_admin && $wp_list_table && 'WP_Post_Comments_List_Table' === get_class( $wp_list_table ) ) {
			return $content;
		}

		$mltlngg_post_type = get_post_type( $post->ID );
		/* If current post type enabled to translation */
		$check_posttype = ( 'post' === $mltlngg_post_type || 'page' === $mltlngg_post_type );
		$check_posttype = apply_filters( 'mltlngg_posttype_compability', $check_posttype, $mltlngg_post_type );
		if ( $check_posttype ) {
			if ( $is_admin ) {
				$mltlngg_current_language = ( isset( $_GET['lang'] ) ) ? sanitize_text_field( wp_unslash( $_GET['lang'] ) ) : ( ( isset( $mltlngg_active_language['locale'] ) ) ? $mltlngg_active_language['locale'] : $mltlngg_options['default_language'] );
			}

			$new_content = $wpdb->get_var( $wpdb->prepare( 'SELECT `post_content` FROM `' . $wpdb->prefix . 'mltlngg_translate` WHERE `post_ID` = %d AND `language` = %s ', $post->ID, $mltlngg_current_language ) );
			if ( ! empty( $new_content ) ) {
				if ( ! $is_admin ) {
					if ( ! post_password_required() ) {
						$noteaser    = ( ( false !== strpos( $new_content, '<!--noteaser-->' ) ) ? true : false );
						$extends     = get_extended( $new_content );
						$extended    = $extends['extended'];
						$new_content = $extends['main'];

						if ( ! empty( $mltlngg_options['video_providers'] ) ) {
							foreach ( $mltlngg_options['video_providers'] as $reg_exp ) {
								preg_match( $reg_exp, $new_content, $matches );
								if ( ! empty( $matches[0] ) ) {
									$string      = strstr( $matches[0], '<', true );
									$match       = $string ? '[(' . preg_quote( $string ) . ')]' : '[(' . preg_quote( $matches[0] ) . ')]';
									$new_content = preg_replace_callback( $match, 'mltlngg_videos_filter', $new_content );
								}
								preg_match( $reg_exp, $new_content, $matches );
								if ( ! empty( $matches[0] ) ) {
									$string   = strstr( $matches[0], '<', true );
									$match    = $string ? '[(' . preg_quote( $string ) . ')]' : '[(' . preg_quote( $matches[0] ) . ')]';
									$extended = preg_replace_callback( $match, 'mltlngg_videos_filter', $extended );
								}
							}
						}

						if ( ! is_single() && ! is_page() && ! is_search() ) {
							$more_link_text = esc_html__( '(more&hellip;)' );
							$more_link      = apply_filters( 'the_content_more_link', ' <a href="' . get_permalink() . "#more-{$post->ID}\" class=\"more-link\">$more_link_text</a>", $more_link_text );

							if ( '' !== $extended ) {
								$new_content .= $more_link;
							}
						} elseif ( is_page() ) {
							$new_content .= $extended;
						} else {
							if ( $noteaser ) {
								$new_content = '';
							}

							$new_content .= ( 0 !== strlen( $new_content ) ) ? '<span id="more-' . $post->ID . '"></span>' . $extended : $extended;
						}

						/* if it is the_excerpt - remove shortcodes */
						if ( ! empty( $wp_current_filter ) && in_array( 'get_the_excerpt', $wp_current_filter, true ) ) {
							$new_content = strip_shortcodes( $new_content );
						}

						if ( 0 !== strlen( $new_content ) ) {
							return force_balance_tags( $new_content );
						}
					} else {
						$content = get_the_password_form();
					}
					/* If translation is exist and not empty, filter content */
				} else {
					$content = $new_content;
				}
			}
		}
		return $content;
	}
}

if ( ! function_exists( 'mltlngg_providers_filter' ) ) {
	/**
	 * Get first provider
	 *
	 * @param array $matches Matches array.
	 * @return string provider
	 */
	function mltlngg_providers_filter( $matches ) {
		return $matches[1];
	}
}

if ( ! function_exists( 'mltlngg_videos_filter' ) ) {
	/**
	 * Filter for video on content
	 *
	 * @param array $matches Matches array.
	 * @return string video
	 */
	function mltlngg_videos_filter( $matches ) {
		return "\n" . $matches[0] . "\n";
	}
}

if ( ! function_exists( 'mltlngg_update_video_options' ) ) {
	/**
	 * Update video options
	 */
	function mltlngg_update_video_options() {
		if ( ! is_network_admin() ) {
			global $mltlngg_options;

			if ( empty( $mltlngg_options ) ) {
				$mltlngg_options = get_option( 'mltlngg_options' );
				if ( empty( $mltlngg_options ) ) {
					mltlngg_register_settings();
				}
			}

			if ( file_exists( ABSPATH . WPINC . '/class-wp-oembed.php' ) ) {
				require_once( ABSPATH . WPINC . '/class-wp-oembed.php' );
			} else {
				require_once( ABSPATH . WPINC . '/class-oembed.php' );
			}
			$oembed = _wp_oembed_get_object();

			if ( ! empty( $oembed->providers ) && is_array( $oembed->providers ) ) {
				$mltlngg_options['video_providers'] = array();
				foreach ( $oembed->providers as $provider => $url ) {
					$reg_exp                              = preg_replace_callback( '/^#(.*)((\.\*\#)|(\.\*\#)|(\*\#))$/', 'mltlngg_providers_filter', $provider );
					$reg_exp                              = preg_replace_callback( '/^(.*)(\*)$/', 'mltlngg_providers_filter', $reg_exp );
					$reg_exp                              = '[(' . $reg_exp . ")(([^\s]*)|([^\t]*)|([^\n]*)|([^\<]*))]i";
					$mltlngg_options['video_providers'][] = $reg_exp;
				}
			}
		}
	}
}

if ( ! function_exists( 'mltlngg_fiter_terms_search' ) ) {
	/**
	 * Filter the search of terms during the post editing
	 *
	 * @param array $cache Cached array of terms for the given taxonomy.
	 * @return array $cache extended array of terms
	 */
	function mltlngg_fiter_terms_search( $cache ) {

		if (
			isset( $_GET['action'] ) && 'ajax-tag-search' === sanitize_text_field( wp_unslash( $_GET['action'] ) ) &&
			isset( $_GET['q'] ) && ! empty( $_GET['q'] ) &&
			isset( $_GET['tax'] ) && ! empty( $_GET['tax'] )
		) {
			global $wpdb;

			$term_name = sanitize_text_field( wp_unslash( $_GET['q'] ) );
			$tax_name  = sanitize_text_field( wp_unslash( $_GET['tax'] ) );

			/* looking for the term in accordance with the entered value for the current taxonomy */
			$terms = $wpdb->get_col(
				$wpdb->prepare(
					'SELECT DISTINCT `name`
					FROM `' . $wpdb->terms . '`
					WHERE `term_id` IN (
						SELECT DISTINCT `' . $wpdb->prefix . 'mltlngg_terms_translate`.`term_ID`
						FROM `' . $wpdb->prefix . 'mltlngg_terms_translate`
						LEFT JOIN `' . $wpdb->term_taxonomy . '`
							ON `taxonomy`= %s
						WHERE `name` LIKE %s AND `' . $wpdb->prefix . 'mltlngg_terms_translate`.`term_ID`=`' . $wpdb->term_taxonomy . '`.`term_ID`);',
					$tax_name,
					'%' . $term_name . '%'
				)
			);

			if ( empty( $terms ) || ! is_array( $terms ) ) {
				return $cache;
			}

			$cache = array_merge( $cache, array_filter( $terms ) );
			$cache = array_unique( $cache );
		}

		return $cache;
	}
}

if ( ! function_exists( 'mltlngg_terms_filter' ) ) {
	/**
	 * Display categories list & tags cloud & categories/tags of posts in the selected language
	 *
	 * @param array $terms Post terms.
	 * @return array $terms
	 */
	function mltlngg_terms_filter( $terms ) {
		global $wpdb, $mltlngg_current_language;

		if ( is_admin() ) {
			return $terms;
		}

		/* Filter the search of terms during the post editing */
		if (
			isset( $_GET['action'] ) && 'ajax-tag-search' === sanitize_text_field( wp_unslash( $_GET['action'] ) ) &&
			isset( $_GET['q'] ) && ! empty( $_GET['q'] ) &&
			isset( $_GET['tax'] ) && ! empty( $_GET['tax'] )
		) {
			$term_name = sanitize_text_field( wp_unslash( $_GET['q'] ) );
			$tax_name  = sanitize_text_field( wp_unslash( $_GET['tax'] ) );

			/* looking for the term in accordance with the entered value for the current taxonomy */
			$terms_array = $wpdb->get_col(
				$wpdb->prepare(
					'SELECT DISTINCT `name`
					FROM `' . $wpdb->terms . '`
					WHERE `term_id` IN (
						SELECT DISTINCT `' . $wpdb->prefix . 'mltlngg_terms_translate`.`term_ID`
						FROM `' . $wpdb->prefix . 'mltlngg_terms_translate`
						LEFT JOIN `' . $wpdb->term_taxonomy . '`
							ON `taxonomy`=%s
						WHERE `name` LIKE %s AND `' . $wpdb->prefix . 'mltlngg_terms_translate`.`term_ID`=`' . $wpdb->term_taxonomy . '`.`term_ID`
					);',
					$tax_name,
					'%' . $term_name . '%'
				)
			);

			if ( empty( $terms_array ) || ! is_array( $terms_array ) ) {
				return $terms;
			}

			$terms = array_merge( $terms, array_filter( $terms_array ) );
			$terms = array_unique( $terms );
		} else {
			/* Filter terms before the displaying in the frontend */
			foreach ( $terms as $mltlngg_one_term ) {
				if ( isset( $mltlngg_one_term->term_id ) ) {
					$mltlngg_one_term_name = $wpdb->get_var(
						$wpdb->prepare(
							'SELECT `name`
							 FROM `' . $wpdb->prefix . 'mltlngg_terms_translate`
							 WHERE `term_ID`=%d AND `language` = %s',
							$mltlngg_one_term->term_id,
							$mltlngg_current_language
						)
					);
					if ( isset( $mltlngg_one_term_name ) && '' !== $mltlngg_one_term_name ) { /* If translation is exist and not empty, filter terms */
						$mltlngg_one_term->name = $mltlngg_one_term_name;
					}
				}
			}
		}
		return $terms;
	}
}

if ( ! function_exists( 'mltlngg_term_filter' ) ) {
	/**
	 * Display category & tags names in the title of archive pages in the selected language
	 *
	 * @param object $term Post term.
	 * @return string $term Term name.
	 */
	function mltlngg_term_filter( $term ) {
		global $wpdb, $mltlngg_current_language;

		if ( is_admin() ) {
			return $term;
		}

		$mltlngg_term_name = $wpdb->get_var(
			$wpdb->prepare(
				'SELECT `name`
				 FROM `' . $wpdb->prefix . 'mltlngg_terms_translate`
				 WHERE `term_ID` = %d AND `language` = %s
				',
				$term->term_id,
				$mltlngg_current_language
			)
		);
		if ( isset( $mltlngg_term_name ) && '' !== $mltlngg_term_name ) { /* If translation is exist and not empty, filter term */
			$term->name = $mltlngg_term_name;
		}
		return $term;
	}
}

if ( ! function_exists( 'mltlngg_paginate_url_translate' ) ) {
	/**
	 * Fixed pagination for default permalinks
	 *
	 * @param string $link Pagination URL.
	 * @return string $link
	 */
	function mltlngg_paginate_url_translate( $link ) {
		global $mltlngg_current_language;
		if ( strpos( $link, '?lang=' . $mltlngg_current_language . '/' ) ) {
			$link = str_replace( '?lang=' . $mltlngg_current_language . '/', '/', $link );
		}
		return $link;
	}
}
if ( ! function_exists( 'mltlngg_author_url_fix' ) ) {
	/**
	 * Fixed author url for default permalinks
	 *
	 * @param string $link            Pagination URL.
	 * @param int    $author_id       Author ID.
	 * @param string $author_nicename Author nickname.
	 * @return string $link
	 */
	function mltlngg_author_url_fix( $link, $author_id, $author_nicename ) {
		if ( strpos( $link, '?lang=' ) && strpos( $link, '?author=' ) ) {
			$link = str_replace( '?author=', '&author=', $link );
		}
		return $link;
	}
}

if ( ! function_exists( 'mltlngg_localize_excerpt' ) ) {
	/**
	 * Filter for post excerpt
	 *
	 * @param string $excerpt Post excerpt.
	 * @return string $excerpt
	 */
	function mltlngg_localize_excerpt( $excerpt ) {
		global $wpdb, $post, $mltlngg_current_language;
		/* If current post type enabled to translation */
		$post_type = get_post_type( $post->ID );
		if ( in_array( $post_type, array( 'post', 'page' ), true ) ) {
			$excerpt_new = $wpdb->get_var( $wpdb->prepare( 'SELECT `post_excerpt` FROM `' . $wpdb->prefix . 'mltlngg_translate` WHERE `post_ID` = %d AND `language` = %s', $post->ID, $mltlngg_current_language ) );
			if ( ! empty( $excerpt_new ) ) {
				return $excerpt_new;
			} else {
				$excerpt_new = $wpdb->get_var( $wpdb->prepare( 'SELECT `post_content` FROM `' . $wpdb->prefix . 'mltlngg_translate` WHERE `post_ID` = %d AND `language` = %s', $post->ID, $mltlngg_current_language ) );
				if ( ! empty( $excerpt_new ) ) {
					$excerpt_new = mb_strimwidth( $excerpt_new, 0, 250 );
					$excerpt_new = $excerpt_new . '...';
					return $excerpt_new;
				}
			}
		}
		return $excerpt;
	}
}

if ( ! function_exists( 'mltlngg_composer_settings_filter' ) ) {
	/**
	 * Filter for composer content
	 *
	 * @param array  $settings Original setting for composer.
	 * @param int    $post_id  Post ID.
	 * @param object $post     Post object.
	 * @return array $settings
	 */
	function mltlngg_composer_settings_filter( $settings, $post_id, $post ) {
		global $wpdb;

		$grid = new Vc_Hooks_Vc_Grid();

		/**
		 * By the moment when we parse post content edited data will be saved,
		 * that is why we always get actual data.
		 */
		$post_data = $wpdb->get_results(
			$wpdb->prepare(
				'SELECT `post_content` FROM `' . $wpdb->posts . '` WHERE `ID`= %d
				UNION
				SELECT `post_content` FROM `' . $wpdb->prefix . 'mltlngg_translate` WHERE `post_ID`= %d;',
				$post_id,
				$post_id
			)
		);

		if ( empty( $post_data ) ) {
			return $settings;
		}

		/**
		 * Fetch all grid settings from the post content for each language
		 */
		$all_settings = array( 'vc_grid_id' => array( 'shortcodes' => array() ) );
		foreach ( (array) $post_data as $data ) {
			$data->post_content = stripslashes( $data->post_content );
			$lang_settings      = $grid->gridSavePostSettingsId( $settings, $post_id, $data );

			if ( empty( $lang_settings['vc_grid_id']['shortcodes'] ) ) {
				continue;
			}

			$all_settings['vc_grid_id']['shortcodes'] = array_merge( $all_settings['vc_grid_id']['shortcodes'], $lang_settings['vc_grid_id']['shortcodes'] );
		}

		if ( empty( $all_settings['vc_grid_id']['shortcodes'] ) ) {
			return $settings;
		}

		if ( empty( $settings['vc_grid_id']['shortcodes'] ) ) {
			$settings['vc_grid_id']['shortcodes'] = $all_settings['vc_grid_id']['shortcodes'];
		} else {
			$settings['vc_grid_id']['shortcodes'] = array_merge( $all_settings['vc_grid_id']['shortcodes'], $settings['vc_grid_id']['shortcodes'] );
		}

		return $settings;
	}
}

if ( ! function_exists( 'mltlngg_search_join' ) ) {
	/**
	 * Filter for JOIN param in SQL for search
	 *
	 * @param string $join Original join string for SQL.
	 * @return string $join
	 */
	function mltlngg_search_join( $join ) {
		global $wpdb, $mltlngg_current_language, $mltlngg_options, $mltlngg_enabled_languages_locale, $mltlngg_get_default_language;
		if ( ! is_admin() && is_main_query() && is_search() ) {
			if ( 'all' === $mltlngg_options['search'] ) {
				$wpdb->query( 'SET SESSION group_concat_max_len = 100000000;' );
				$join .= "LEFT JOIN (SELECT post_ID, GROUP_CONCAT( DISTINCT post_content ORDER BY post_content ASC SEPARATOR ', ') AS mltlngg_post_content, GROUP_CONCAT( DISTINCT post_title ORDER BY post_title ASC SEPARATOR ', ') AS mltlngg_post_title, GROUP_CONCAT( DISTINCT post_excerpt ORDER BY post_excerpt ASC SEPARATOR ', ') AS mltlngg_post_excerpt FROM `" . $wpdb->prefix . "mltlngg_translate` WHERE `language` IN ('" . implode( "','", $mltlngg_enabled_languages_locale ) . "') AND ( `post_content` != '' OR `post_title` != '' ) GROUP BY `post_ID` ) `" . $wpdb->prefix . 'mltlngg_translate` ON ' . $wpdb->posts . '.ID = `' . $wpdb->prefix . 'mltlngg_translate`.post_ID';
			} elseif ( $mltlngg_get_default_language !== $mltlngg_current_language ) {
				$join .= 'LEFT JOIN (SELECT post_ID, post_content AS mltlngg_post_content, post_title AS mltlngg_post_title, post_excerpt AS mltlngg_post_excerpt FROM `' . $wpdb->prefix . "mltlngg_translate` WHERE `language` = '$mltlngg_current_language' ) `" . $wpdb->prefix . 'mltlngg_translate` ON ' . $wpdb->posts . '.ID = `' . $wpdb->prefix . 'mltlngg_translate`.post_ID';
			}
		}
		return $join;
	}
}

if ( ! function_exists( 'mltlngg_search_where' ) ) {
	/**
	 * Filter for WHERE param in SQL for search
	 *
	 * @param string $where Original WHERE string for SQL.
	 * @return string $where
	 */
	function mltlngg_search_where( $where ) {
		global $wpdb, $mltlngg_options, $mltlngg_get_default_language, $mltlngg_current_language;
		if ( ! is_admin() && is_main_query() && is_search() ) {
			if ( 'all' === $mltlngg_options['search'] ) {
				$where = preg_replace(
					"/\($wpdb->posts.post_title\s+LIKE\s*(\'[^\']+\')\s*\)/",
					'(post_title LIKE $1) OR (mltlngg_post_title LIKE $1) OR (mltlngg_post_content LIKE $1) OR (mltlngg_post_excerpt LIKE $1)',
					$where
				);
			} elseif ( $mltlngg_get_default_language !== $mltlngg_current_language ) {
				$where = preg_replace(
					"/\($wpdb->posts.post_title\s+LIKE\s*(\'[^\']+\')\s*\)/",
					'(mltlngg_post_title LIKE $1)',
					$where
				);
				$where = preg_replace(
					"/\($wpdb->posts.post_content\s+LIKE\s*(\'[^\']+\')\s*\)/",
					'(mltlngg_post_content LIKE $1)',
					$where
				);
				$where = preg_replace(
					"/\($wpdb->posts.post_excerpt\s+LIKE\s*(\'[^\']+\')\s*\)/",
					'(mltlngg_post_excerpt LIKE $1)',
					$where
				);
			}
		}
		return $where;
	}
}

if ( ! function_exists( 'mltlngg_add_term_column' ) ) {
	/**
	 * Add language columns in the taxonomy wp_list_table
	 *
	 * @param array $columns List of terms table columns.
	 * @return array modified List of columns.
	 */
	function mltlngg_add_term_column( $columns ) {
		return mltlngg_add_column( $columns, 'posts' );
	}
}

if ( ! function_exists( 'mltlngg_add_post_column' ) ) {
	/**
	 * Add language columns in the posts wp_list_table
	 *
	 * @param array $columns List of posts table columns.
	 * @return array modified List of columns.
	 */
	function mltlngg_add_post_column( $columns ) {
		return mltlngg_add_column( $columns );
	}
}

if ( ! function_exists( 'mltlngg_term_column' ) ) {
	/**
	 * Fill language column in the taxonomy wp_list_table
	 *
	 * @param string $out     Out content.
	 * @param string $column  Column name.
	 * @param int    $term_id Term ID.
	 */
	function mltlngg_term_column( $out, $column, $term_id ) {
		if ( false === strpos( $column, 'mltlngg_language_' ) ) {
			return $out;
		}

		$post_type = isset( $GLOBALS['post_type'] ) ? $GLOBALS['post_type'] : ( isset( $_REQUEST['post_type'] ) ? sanitize_text_field( wp_unslash( $_REQUEST['post_type'] ) ) : '' );
		$taxonomy  = isset( $GLOBALS['taxonomy'] ) ? $GLOBALS['taxonomy'] : ( isset( $_REQUEST['taxonomy'] ) ? sanitize_text_field( wp_unslash( $_REQUEST['taxonomy'] ) ) : '' );

		if ( ! post_type_exists( $post_type ) || ! taxonomy_exists( $taxonomy ) ) {
			return $out;
		}

		global $wpdb;

		$language = str_replace( 'mltlngg_language_', '', $column );

		/* Get term translation from database */
		$term_translation = $wpdb->get_var(
			$wpdb->prepare(
				'SELECT `name`
			 FROM `' . $wpdb->prefix . 'mltlngg_terms_translate`
			 WHERE `term_ID` = %d AND `language` = %s
			',
				$term_id,
				$language
			)
		);

		if ( ! empty( $term_translation ) ) {
			$out .= '<span class="dashicons dashicons-yes"></span>';
		}

		return $out;
	}
}

if ( ! function_exists( 'mltlngg_post_column' ) ) {
	/**
	 * Fill language column in the posts wp_list_table
	 *
	 * @param string $column  Column name.
	 * @param int    $post_id Post ID.
	 */
	function mltlngg_post_column( $column, $post_id ) {
		if ( defined( 'DOING_AJAX' ) || false === strpos( $column, 'mltlngg_language_' ) ) {
			return;
		}

		global $wpdb;

		$language = str_replace( 'mltlngg_language_', '', $column );

		/* Get post translation from database */
		$translation = $wpdb->get_var(
			$wpdb->prepare(
				'SELECT `post_content`
			 FROM `' . $wpdb->prefix . 'mltlngg_translate`
			 WHERE `post_ID` = %d AND `language` = %s
			',
				$post_id,
				$language
			)
		);

		if ( ! empty( $translation ) ) {
			echo '<span class="dashicons dashicons-yes"></span>';
		}
	}
}

if ( ! function_exists( 'mltlngg_add_column' ) ) {
	/**
	 * Adds languages and translations columns
	 *
	 * @param array  $columns List of table columns.
	 * @param string $before  The column before which we want to add our languages.
	 * @return array Modified list of columns.
	 */
	function mltlngg_add_column( $columns, $before = false ) {
		global $mltlngg_enabled_languages, $mltlngg_get_default_language;

		if ( $before && $n = array_search( $before, array_keys( $columns ) ) ) {
			$end     = array_slice( $columns, $n );
			$columns = array_slice( $columns, 0, $n );
		}

		foreach ( $mltlngg_enabled_languages as $language ) {
			/* don't add the column for default language */
			if ( $language['locale'] !== $mltlngg_get_default_language ) {
				$flag = ( empty( $language['flag'] ) ) ? plugins_url( 'images/flags/', __FILE__ ) . $language['locale'] . '.png' : $language['flag'];

				$columns[ 'mltlngg_language_' . $language['locale'] ] = '<img class="mltlngg-lang" src="' . $flag . '" alt="' . $language['name'] . '"><span class="screen-reader-text">' . $language['name'] . '</span>';
			}
		}
		return isset( $end ) ? array_merge( $columns, $end ) : $columns;
	}
}

if ( ! function_exists( 'mltlngg_language_switcher_box' ) ) {
	/**
	 * Add language switcher metabox
	 */
	function mltlngg_language_switcher_box() {
		global $_nav_menu_placeholder, $nav_menu_selected_id;
		$_nav_menu_placeholder = 0 > $_nav_menu_placeholder ? $_nav_menu_placeholder - 1 : -1;
		$screen = convert_to_screen( 'nav-menus' );
		$hidden = get_hidden_meta_boxes( $screen );
		$key = array_search( 'mltlngg_language_switcher_box', $hidden );
		if ( false !== $key ) {
			unset( $hidden[ $key ] );
			$user = wp_get_current_user();
			update_user_meta( $user->ID, 'metaboxhidden_nav-menus', $hidden );
		}
		?>

		<div id="posttype-mltlngg-switcher" class="posttypediv">
			<div id="tabs-panel-mltlngg-switcher" class="tabs-panel tabs-panel-active">
				<ul id="mltlngg-switcher-checklist" class="categorychecklist form-no-clear">
					<li>
						<label class="menu-item-title">
							<input type="checkbox" class="menu-item-checkbox" name="menu-item[<?php echo esc_attr( $_nav_menu_placeholder ); ?>][menu-item-object-id]" value="-1"> <?php esc_html_e( 'Multilanguage switcher', 'multilanguage' ); ?>
						</label>
						<input type="hidden" class="menu-item-type" name="menu-item[<?php echo esc_attr( $_nav_menu_placeholder ); ?>][menu-item-type]" value="custom">
						<input type="hidden" class="menu-item-title" name="menu-item[<?php echo esc_attr( $_nav_menu_placeholder ); ?>][menu-item-title]" value="<?php esc_html_e( 'Multilanguage switcher', 'multilanguage' ); ?>">
						<input type="hidden" class="menu-item-url" name="menu-item[<?php echo esc_attr( $_nav_menu_placeholder ); ?>][menu-item-url]" value="#mltlngg-switcher">
						<input type="hidden" class="menu-item-classes" name="menu-item[-1][menu-item-classes]" value="mltlngg-menu-switcher">
					</li>
				</ul>
			</div>
			<p class="button-controls">
				<span class="add-to-menu">
					<input type="submit" class="button-secondary submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>" name="add-post-type-menu-item" id="submit-posttype-mltlngg-switcher">
					<span class="spinner"></span>
				</span>
			</p>
		</div>
		<?php
	}
}

if ( ! function_exists( 'mltlngg_wp_update_nav_menu_item' ) ) {
	/**
	 * Save nav menu options
	 *
	 * @param int $menu_id not used (Optional) Menu ID.
	 * @param int $menu_item_db_id  (Optioanl) Menu ID in DB.
	 */
	function mltlngg_wp_update_nav_menu_item( $menu_id = 0, $menu_item_db_id = 0 ) {
		global $mltlngg_options;
		if ( empty( $_POST['menu-item-url'][ $menu_item_db_id ] ) || '#mltlngg-switcher' !== $_POST['menu-item-url'][ $menu_item_db_id ] ) {
			return;
		}

		if ( current_user_can( 'edit_theme_options' ) ) {
			check_admin_referer( 'update-nav_menu', 'update-nav-menu-nonce' );

			/* js form has not been displayed */
			if ( empty( $_POST['menu-item-mltlngg-nonce'][ $menu_item_db_id ] ) ) {
				if ( ! get_post_meta( $menu_item_db_id, '_mltlngg_menu_item', true ) ) {
					update_post_meta( $menu_item_db_id, '_mltlngg_menu_item', $mltlngg_options['menu_language_switcher'] );
				}
			} else {
				$value = (
					! empty( $_POST['menu-item-mltlngg-switcher'][ $menu_item_db_id ] ) &&
					in_array(
						$_POST['menu-item-mltlngg-switcher'][ $menu_item_db_id ],
						array(
							'drop-down-list',
							'drop-down-titles',
							'drop-down-icons',
						),
						true
					)
				) ? sanitize_text_field( wp_unslash( $_POST['menu-item-mltlngg-switcher'][ $menu_item_db_id ] ) ) : $mltlngg_options['menu_language_switcher'];
				update_post_meta( $menu_item_db_id, '_mltlngg_menu_item', $value );
			}
		}
	}
}

if ( ! function_exists( 'mltlngg_pdf_print_content_filter' ) ) {
	/**
	 * Compatibility with PDF & Print by BestWebSoft plugin. Display content for current language.
	 *
	 * @since 1.1.9
	 *
	 * @param string $content Content for filter.
	 * @param object $object  Object for filter.
	 * @return string $content
	 */
	function mltlngg_pdf_print_content_filter( $content, $object ) {
		global $wpdb, $mltlngg_current_language, $mltlngg_get_default_language, $wp_current_filter;

		if ( $mltlngg_get_default_language !== $mltlngg_current_language ) {
			/* If current post type enabled to translation */
			if ( 'post' === $object->post_type || 'page' === $object->post_type ) {

				$new_content = $wpdb->get_var( $wpdb->prepare( 'SELECT `post_content` FROM `' . $wpdb->prefix . 'mltlngg_translate` WHERE `post_ID` = %d AND `language` = %s ', $object->ID, $mltlngg_current_language ) );
				if ( ! empty( $new_content ) ) {
					$noteaser    = ( ( false !== strpos( $new_content, '<!--noteaser-->' ) ) ? true : false );
					$extends     = get_extended( $new_content );
					$extended    = $extends['extended'];
					$new_content = $extends['main'];

					if ( ! empty( $mltlngg_options['video_providers'] ) ) {
						foreach ( $mltlngg_options['video_providers'] as $reg_exp ) {
							preg_match( $reg_exp, $new_content, $matches );
							if ( ! empty( $matches[0] ) ) {
								$string      = strstr( $matches[0], '<', true );
								$match       = $string ? '[(' . preg_quote( $string ) . ')]' : '[(' . preg_quote( $matches[0] ) . ')]';
								$new_content = preg_replace_callback( $match, 'mltlngg_videos_filter', $new_content );
							}
							preg_match( $reg_exp, $new_content, $matches );
							if ( ! empty( $matches[0] ) ) {
								$string   = strstr( $matches[0], '<', true );
								$match    = $string ? '[(' . preg_quote( $string ) . ')]' : '[(' . preg_quote( $matches[0] ) . ')]';
								$extended = preg_replace_callback( $match, 'mltlngg_videos_filter', $extended );
							}
						}
					}

					if ( ! is_single() && ! is_page() && ! is_search() ) {
						$more_link_text = esc_html__( '(more&hellip;)' );
						$more_link      = apply_filters( 'the_content_more_link', ' <a href="' . get_permalink() . "#more-{$post->ID}\" class=\"more-link\">$more_link_text</a>", $more_link_text );

						if ( '' !== $extended ) {
							$new_content .= $more_link;
						}
					} elseif ( is_page() ) {
						$new_content .= $extended;
					} else {
						if ( $noteaser ) {
							$new_content = '';
						}

						$new_content .= ( 0 !== strlen( $new_content ) ) ? '<span id="more-' . $object->ID . '"></span>' . $extended : $extended;
					}

					/* if it is the_excerpt - remove shortcodes */
					if ( ! empty( $wp_current_filter ) && in_array( 'get_the_excerpt', $wp_current_filter, true ) ) {
						$new_content = strip_shortcodes( $new_content );
					}

					if ( 0 !== strlen( $new_content ) ) {
						return force_balance_tags( $new_content );
					}
					return $new_content;
				}
			}
		}
		return $content;
	}
}

if ( ! function_exists( 'mltlngg_pdf_print_title_filter' ) ) {
	/**
	 * Compatibility with PDF & Print by BestWebSoft plugin. Display title for current language.
	 *
	 * @since 1.1.9
	 *
	 * @param string $title Title for pdf&print.
	 * @param object $object Object for filter.
	 * @return string $content
	 */
	function mltlngg_pdf_print_title_filter( $title, $object ) {
		global $mltlngg_options, $wpdb, $mltlngg_current_language, $mltlngg_get_default_language;
		if ( $mltlngg_get_default_language !== $mltlngg_current_language ) {
			/* If current post type enabled to translation */
			if ( 'post' === $object->post_type || 'page' === $object->post_type ) {
				$new_title = $wpdb->get_var( $wpdb->prepare( 'SELECT `post_title` FROM `' . $wpdb->prefix . 'mltlngg_translate` WHERE `post_ID` = %d AND `language` = %s', $object->ID, $mltlngg_current_language ) );

				if ( ! empty( $new_title ) ) {
					return $new_title;
				}
			}
		}
		return $title;
	}
}

if ( ! function_exists( 'mltlngg_is_admin' ) ) {
	/**
	 * Check if running in admin area.
	 *
	 * @return bool flag
	 */
	function mltlngg_is_admin() {
		return ( is_admin() && ! ( defined( 'DOING_AJAX' ) && ! isset( $_REQUEST['pagenow'] ) ) );
	}
}

if ( ! function_exists( 'mltlngg_add_tabs' ) ) {
	/**
	 * Add help tab
	 */
	function mltlngg_add_tabs() {
		$screen = get_current_screen();
		$args   = array(
			'id'      => 'mltlngg',
			'section' => '200538779',
		);
		bws_help_tab( $screen, $args );
	}
}

if ( ! function_exists( 'mltlngg_shortcode_button_content' ) ) {
	/**
	 * Add shortcode content
	 *
	 * @param string $content Content for shortcode.
	 */
	function mltlngg_shortcode_button_content( $content ) {
		global $mltlngg_options;
		?>
		<div id="mltlngg" style="display:none;">
			<h3><?php esc_html_e( 'Select Switcher Type', 'multilanguage' ); ?>:</h3>
			<fieldset class="mltlngg-shortcode">
				<label>
					<input name="mltlngg_language_switcher" type="radio" value="drop-down-list" <?php checked( $mltlngg_options['language_switcher'], 'drop-down-list' ); ?> />
					<?php esc_html_e( 'Drop-down list', 'multilanguage' ); ?> (<?php esc_html_e( 'flag', 'multilanguage' ); ?> + <?php esc_html_e( 'title', 'multilanguage' ); ?>)
				</label><br/>
				<label>
					<input name="mltlngg_language_switcher" type="radio" value="drop-down-titles" <?php checked( $mltlngg_options['language_switcher'], 'drop-down-titles' ); ?> />
					<?php esc_html_e( 'Drop-down list', 'multilanguage' ); ?> (<?php esc_html_e( 'title', 'multilanguage' ); ?>)
				</label><br/>
				<label>
					<input name="mltlngg_language_switcher" type="radio" value="drop-down-icons" <?php checked( $mltlngg_options['language_switcher'], 'drop-down-icons' ); ?> />
					<?php esc_html_e( 'Drop-down list', 'multilanguage' ); ?> (<?php esc_html_e( 'flag', 'multilanguage' ); ?>)
				</label><br/>
				<label>
					<input name="mltlngg_language_switcher" type="radio" value="flags-icons" <?php checked( $mltlngg_options['language_switcher'], 'flags-icons' ); ?> />
					<?php esc_html_e( 'Flag', 'multilanguage' ); ?>
				</label><br/>
				<label>
					<input name="mltlngg_language_switcher" type="radio" value="gt" <?php checked( $mltlngg_options['language_switcher'], 'gt' ); ?> />
					<?php esc_html_e( 'Google Auto Translate', 'multilanguage' ); ?> (<?php esc_html_e( 'drop-down only', 'multilanguage' ); ?>)
				</label><br/>
				<label>
					<input name="mltlngg_language_switcher" type="radio" value="gt-horizontal" <?php checked( $mltlngg_options['language_switcher'], 'gt-horizontal' ); ?> />
					<?php esc_html_e( 'Google Auto Translate', 'multilanguage' ); ?> (<?php esc_html_e( 'horizontal', 'multilanguage' ); ?>)
				</label><br/>
				<label>
					<input name="mltlngg_language_switcher" type="radio" value="gt-vertical" <?php checked( $mltlngg_options['language_switcher'], 'gt-vertical' ); ?> />
					<?php esc_html_e( 'Google Auto Translate', 'multilanguage' ); ?> (<?php esc_html_e( 'vertical', 'multilanguage' ); ?>)
				</label>
			</fieldset>
			<input class="bws_default_shortcode" type="hidden" name="default" value='[multilanguage_switcher]' />
			<div class="clear"></div>
			<script type="text/javascript">
				function mltlngg_shortcode_init() {
					(function($) {
						$( '.mce-reset [name="mltlngg_language_switcher"]' ).on( 'click', function() {
							var layout = $( this ).val(),
							shortcode = '[multilanguage_switcher layout="' + layout + '"]';
							$( '.mce-reset #bws_shortcode_display' ).text( shortcode );
						});
					})(jQuery);
				}
			</script>
		</div>
		<?php
	}
}

if ( ! function_exists( 'mltlngg_plugin_action_links' ) ) {
	/**
	 * Adding setting link in activate plugin page
	 *
	 * @param array  $links Array with links.
	 * @param string $file  File path.
	 * @return array $links
	 */
	function mltlngg_plugin_action_links( $links, $file ) {
		if ( ! is_network_admin() ) {
			/* Static so we don't call plugin_basename on every plugin row. */
			static $this_plugin;
			if ( ! $this_plugin ) {
				$this_plugin = plugin_basename( __FILE__ );
			}
			if ( $file === $this_plugin ) {
				$settings_link = '<a href="admin.php?page=mltlngg_settings">' . esc_html__( 'Settings', 'multilanguage' ) . '</a>';
				array_unshift( $links, $settings_link );
			}
		}
		return $links;
	}
}

if ( ! function_exists( 'mltlngg_register_plugin_links' ) ) {
	/**
	 * Adding Settings, FAQ and Support links
	 *
	 * @param array  $links Array with links.
	 * @param string $file  File path.
	 * @return array $links
	 */
	function mltlngg_register_plugin_links( $links, $file ) {
		$base = plugin_basename( __FILE__ );
		if ( $file === $base ) {
			if ( ! is_network_admin() ) {
				$links[] = '<a href="admin.php?page=mltlngg_settings">' . esc_html__( 'Settings', 'multilanguage' ) . '</a>';
			}
			$links[] = '<a href="http://wordpress.org/plugins/multilanguage/faq/" target="_blank">' . esc_html__( 'FAQ', 'multilanguage' ) . '</a>';
			$links[] = '<a href="https://support.bestwebsoft.com">' . esc_html__( 'Support', 'multilanguage' ) . '</a>';
		}
		return $links;
	}
}

if ( ! function_exists( 'mltlngg_deactivation' ) ) {
	/**
	 * Function for delete of the plugin settings on register_activation_hook
	 */
	function mltlngg_deactivation() {
		global $mltlngg_options;

		$mltlngg_options['deactivation'] = current_time( 'mysql' );
		update_option( 'mltlngg_options', $mltlngg_options );
	}
}

if ( ! function_exists( 'mltlngg_delete_blog' ) ) {
	/**
	 * Function for delete of the plugin settings on multisite
	 *
	 * @param int $blog_id ID for subsite on multisite.
	 */
	function mltlngg_delete_blog( $blog_id ) {
		global $wpdb;
		if ( is_plugin_active_for_network( 'multilanguage/multilanguage.php' ) ) {
			if ( ! function_exists( 'get_plugins' ) ) {
				require_once ABSPATH . 'wp-admin/includes/plugin.php';
			}
			$all_plugins = get_plugins();
			$pro_exist   = array_key_exists( 'multilanguage-pro/multilanguage-pro.php', $all_plugins );

			$old_blog = $wpdb->blogid;
			switch_to_blog( $blog_id );
			_mltlngg_delete_options( $pro_exist );
			switch_to_blog( $old_blog );
		}
	}
}

if ( ! function_exists( 'mltlngg_delete_options' ) ) {
	/**
	 * Function for delete of the plugin settings on multisite
	 */
	function mltlngg_delete_options() {
		global $wpdb;

		if ( ! function_exists( 'get_plugins' ) ) {
			require_once ABSPATH . 'wp-admin/includes/plugin.php';
		}
		$all_plugins = get_plugins();
		$pro_exist   = array_key_exists( 'multilanguage-pro/multilanguage-pro.php', $all_plugins );

		if ( function_exists( 'is_multisite' ) && is_multisite() ) {
			/* check if it is a network activation - if so, run the activation function for each blog id */
			$old_blog = $wpdb->blogid;
			/* Get all blog ids */
			$blogids = $wpdb->get_col( "SELECT `blog_id` FROM $wpdb->blogs" );
			foreach ( $blogids as $blog_id ) {
				switch_to_blog( $blog_id );
				_mltlngg_delete_options( $pro_exist );
			}
			switch_to_blog( $old_blog );
		} else {
			_mltlngg_delete_options( $pro_exist );
		}

		require_once dirname( __FILE__ ) . '/bws_menu/bws_include.php';
		bws_include_init( plugin_basename( __FILE__ ) );
		bws_delete_plugin( plugin_basename( __FILE__ ) );
	}
}

if ( ! function_exists( '_mltlngg_delete_options' ) ) {
	/**
	 * Function for delete of the plugin settings
	 *
	 * @param flag $pro_exist Flag for pro version exists.
	 */
	function _mltlngg_delete_options( $pro_exist ) {
		global $wpdb;

		if ( ! $pro_exist ) {
			$wpdb->query( 'DROP TABLE `' . $wpdb->prefix . 'mltlngg_translate`, `' . $wpdb->prefix . 'mltlngg_terms_translate`;' );

			/* Delete widget from database */
			if ( is_dynamic_sidebar() ) { /* If there is an active sidebar */
				$mltlngg_available_sidebars = get_option( 'sidebars_widgets' ); /* Get all active sidebars and widgets */
				foreach ( $mltlngg_available_sidebars as $key1 => $one_sidebar ) {
					if ( 'array_version' !== $key1 && isset( $one_sidebar ) ) {
						$widget_exist = preg_grep( '/multi_language_widget-?\d*/', $one_sidebar );
						if ( isset( $widget_exist ) ) {
							foreach ( $widget_exist as $key2 => $one_widget ) {
								unset( $mltlngg_available_sidebars[ $key1 ][ $key2 ] );
							}
						}
					}
				}
				update_option( 'sidebars_widgets', $mltlngg_available_sidebars );
			}
			delete_option( 'widget_multi_language_widget' );
			delete_option( 'mltlngg_options' );
		}

		flush_rewrite_rules();
	}
}

if ( ! function_exists( 'mltlngg_plugin_banner' ) ) {
	/**
	 * Display plugin banner
	 */
	function mltlngg_plugin_banner() {
		global $hook_suffix, $mltlngg_plugin_info;
		if ( 'plugins.php' === $hook_suffix ) {
			bws_plugin_banner_to_settings( $mltlngg_plugin_info, 'mltlngg_options', 'multilanguage', 'admin.php?page=mltlngg_settings' );
		}

		if ( isset( $_GET['page'] ) && 'mltlngg_settings' === $_GET['page'] ) {
			bws_plugin_suggest_feature_banner( $mltlngg_plugin_info, 'mltlngg_options', 'multilanguage' );
		}
	}
}

register_activation_hook( __FILE__, 'mltlngg_plugin_activate' );
add_action( 'wpmu_new_blog', 'mltlngg_new_blog', 10, 6 );
add_action( 'delete_blog', 'mltlngg_delete_blog', 10 );

add_action( 'plugins_loaded', 'mltlngg_plugin_load' );

/* Rewrite rules */
add_action( 'generate_rewrite_rules', 'mltlngg_rewrite_rules' );
add_filter( 'query_vars', 'mltlngg_add_query_vars' );

add_action( 'admin_menu', 'mltlngg_admin_menu' );
add_action( 'init', 'mltlngg_init', 10 );
add_action( 'admin_init', 'mltlngg_admin_init' );
add_action( 'current_screen', 'mltlngg_current_screen' );
add_filter( 'language_attributes', 'mltlngg_language_attributes', PHP_INT_MAX );
add_action( 'wp_head', 'mltlngg_wp_head', PHP_INT_MAX );
add_action( 'admin_enqueue_scripts', 'mltlngg_script_style' );
add_action( 'wp_enqueue_scripts', 'mltlngg_script_style' );
add_action( 'widgets_init', 'register_mltlngg_widget' );
add_filter( 'taxonomy_labels_post_tag', 'mltlngg_post_tag_labels' );

add_shortcode( 'multilanguage_switcher', 'mltlngg_get_switcher_block' );

/* Links filters */
add_filter( 'home_url', 'mltlngg_get_url_translated' );

/* Actions for page/post editor */

/* add_action( 'wp_print_scripts', 'mltlngg_disable_autosave_editor_script', 100 ); */

/* Add languages tabs to post editor */
add_action( 'edit_form_top', 'mltlngg_showup_language_tabs_in_editor' );
add_filter( 'title_edit_pre', 'mltlngg_the_title_filter', 10, 2 );
add_filter( 'excerpt_edit_pre', 'mltlngg_localize_excerpt', 10, 1 );

add_filter( 'vc_hooks_vc_post_settings', 'mltlngg_composer_settings_filter', 11, 3 );

add_action( 'edit_form_after_title', 'mltlngg_set_main_content_filter', 10, 1 );
add_action( 'edit_form_after_editor', 'mltlngg_unset_main_content_filter', 10, 1 );

add_action( 'save_post', 'mltlngg_save_post' ); /* Saving changes in posts translations */
add_action( 'deleted_post', 'mltlngg_delete_post' );    /* Delete posts translations from database */

/* add language name as class to body tag */
add_filter( 'body_class', 'mltlngg_add_body_classes' );

/* Filters for display frontend content language */
add_filter( 'the_title', 'mltlngg_the_title_filter', 10, 2 );
add_filter( 'single_post_title', 'mltlngg_the_title_filter', 10, 2 );
add_filter( 'wp_get_nav_menu_items', 'mltlngg_nav_menu_items_filter', 10 );
add_filter( 'the_content', 'mltlngg_the_content_filter', 1 );
add_filter( 'get_terms', 'mltlngg_terms_filter' );  /* Add filter categories list & tags cloud */
add_filter( 'get_the_terms', 'mltlngg_terms_filter' );  /* Add filter categories & tags of posts */
add_filter( 'get_term', 'mltlngg_term_filter' );    /* Add filter category & tags names in title of archive pages */
add_filter( 'get_pagenum_link', 'mltlngg_paginate_url_translate' );
add_filter( 'author_link', 'mltlngg_author_url_fix', 10, 3 );
add_filter( 'get_the_excerpt', 'mltlngg_localize_excerpt', 1, 1 );
/* Add screen options on Multilanguage language list Page */
add_filter( 'set-screen-option', 'mltlngg_table_set_option', 10, 3 );

/* extend search */
add_filter( 'posts_join', 'mltlngg_search_join' );
add_filter( 'posts_where', 'mltlngg_search_where' );

/* Compatibility with PDF & Print by BestWebSoft plugin. */
add_filter( 'bwsplgns_get_pdf_print_content', 'mltlngg_pdf_print_content_filter', 10, 2 );
add_filter( 'bwsplgns_get_pdf_print_title', 'mltlngg_pdf_print_title_filter', 10, 2 );

/* custom filter for bws button in tinyMCE */
add_filter( 'bws_shortcode_button_content', 'mltlngg_shortcode_button_content' );

/* Additional links on the plugin page */
add_filter( 'plugin_action_links', 'mltlngg_plugin_action_links', 10, 2 );
add_filter( 'plugin_row_meta', 'mltlngg_register_plugin_links', 10, 2 );

/* Add AJAX function */
add_action( 'wp_ajax_mltlngg_ajax_callback', 'mltlngg_ajax_callback' );

add_action( 'admin_notices', 'mltlngg_plugin_banner' );
register_deactivation_hook( __FILE__, 'mltlngg_deactivation' );