<?php
/**
 * String translation common functions.
 *
 * @package WPML\ST
 * @todo    : Move the functions code to classes and keep the functions as wrappers only
 */

use WPML\ST\Gettext\Hooks;
use WPML\ST\Gettext\HooksFactory;
use function WPML\Container\make;
use WPML\Element\API\Languages;

add_action( 'plugins_loaded', 'icl_st_init' );

function icl_st_init() {
	global $sitepress_settings, $sitepress, $wpdb, $icl_st_err_str, $pagenow, $authordata;

	if ( empty( $sitepress_settings['setup_complete'] ) || ( $pagenow === 'site-new.php' && isset( $_REQUEST['action'] ) && 'add-site' === $_REQUEST['action'] ) ) {
		return;
	}

	add_action( 'icl_update_active_languages', 'icl_update_string_status_all' );
	add_action( 'update_option_blogname', 'icl_st_update_blogname_actions', 5, 2 );
	add_action( 'update_option_blogdescription', 'icl_st_update_blogdescription_actions', 5, 2 );

	if ( ! isset( $sitepress_settings['existing_content_language_verified'] ) || ! $sitepress_settings['existing_content_language_verified'] ) {
		return;
	}

	if ( ! isset( $sitepress_settings['st']['strings_per_page'] ) ) {
		$sitepress_settings['st']['strings_per_page'] = WPML_ST_DEFAULT_STRINGS_PER_PAGE;
		$sitepress->save_settings( $sitepress_settings );
	} elseif ( isset( $_GET['strings_per_page'] ) && $_GET['strings_per_page'] > 0 ) {
		$sitepress_settings['st']['strings_per_page'] = $_GET['strings_per_page'];
		$sitepress->save_settings( $sitepress_settings );
	}
	if ( ! isset( $sitepress_settings['st']['icl_st_auto_reg'] ) ) {
		$sitepress_settings['st']['icl_st_auto_reg'] = 'disable';
		$sitepress->save_settings( $sitepress_settings );

		do_action( 'wpml_st_auto_register_default' );
	}
	if ( empty( $sitepress_settings['st']['strings_language'] ) ) {
		$iclsettings['st']['strings_language'] = $sitepress_settings['st']['strings_language'] = 'en';
		$sitepress->save_settings( $iclsettings );
	}

	if ( ! isset( $sitepress_settings['st']['translated-users'] ) ) {
		$sitepress_settings['st']['translated-users'] = array();
	}

	// handle po file upload

	new WPML_PO_Import_Strings_Scripts();
	$po_import_strings = new WPML_PO_Import_Strings();
	$po_import_strings->maybe_import_po_add_strings();
	$icl_st_err_str = $po_import_strings->get_errors();

	// handle po export
	if ( isset( $_POST['icl_st_pie_e'] ) && wp_verify_nonce( $_POST['_wpnonce'], 'icl_po_export' ) ) {
		// force some filters
		if ( isset( $_GET['status'] ) ) {
			unset( $_GET['status'] );
		}
		$_GET['show_results'] = 'all';
		if ( $_POST['icl_st_e_context'] ) {
			$_GET['context'] = filter_var( $_POST['icl_st_e_context'], FILTER_SANITIZE_STRING );
		}

		$_GET['translation_language'] = filter_var( $_POST['icl_st_e_language'], FILTER_SANITIZE_STRING );
		$strings                      = icl_get_string_translations();
		if ( ! empty( $strings ) ) {
			$po = icl_st_generate_po_file( $strings );
		} else {
			$po = '';
		}
		if ( ! isset( $_POST['icl_st_pe_translations'] ) ) {
			$popot  = 'pot';
			$poname = $_POST['icl_st_e_context'] ? filter_var( urlencode( $_POST['icl_st_e_context'] ), FILTER_SANITIZE_STRING ) : 'all_context';
		} else {
			$popot  = 'po';
			$poname = filter_var( $_GET['context'], FILTER_SANITIZE_STRING ) . '-' . filter_var( $_GET['translation_language'], FILTER_SANITIZE_STRING );
		}
		header( 'Content-Type: application/force-download' );
		header( 'Content-Type: application/octet-stream' );
		header( 'Content-Type: application/download' );
		header( 'Content-Disposition: attachment; filename=' . $poname . '.' . $popot . ';' );
		header( 'Content-Length: ' . strlen( $po ) );
		echo $po;
		exit( 0 );
	}

	/**
	 * @todo: Move this class to the standard hooks loader
	 * @var WPML_ST_Blog_Name_And_Description_Hooks $blog_name_and_desc_hooks
	 */
	$blog_name_and_desc_hooks = make( WPML_ST_Blog_Name_And_Description_Hooks::class );
	$blog_name_and_desc_hooks->add_hooks();
	add_filter( 'widget_title', 'icl_sw_filters_widget_title', 0 );  // highest priority
	add_filter( 'widget_text', 'icl_sw_filters_widget_text', 0 ); // highest priority

	$widget_groups = $wpdb->get_results( "SELECT option_name, option_value FROM {$wpdb->options} WHERE option_name LIKE 'widget\\_%'" );
	foreach ( $widget_groups as $w ) {
		add_action( 'update_option_' . $w->option_name, 'icl_st_update_widget_title_actions', 5, 2 );
	}

	add_action( 'update_option_widget_text', 'icl_st_update_text_widgets_actions', 5, 2 );
	add_action( 'update_option_sidebars_widgets', 'wpml_st_init_register_widget_titles' );

	if ( $icl_st_err_str ) {
		add_action( 'admin_notices', 'icl_st_admin_notices' );
	}
	if ( isset( $_REQUEST['string-translated'] ) && $_REQUEST['string-translated'] == true ) {
		add_action( 'admin_notices', 'icl_st_admin_notices_string_updated' );
	}

	$user_fields = new WPML_ST_User_Fields( $sitepress, $authordata );
	$user_fields->init_hooks();
}

function wpml_st_init_register_widget_titles() {

	// create a list of active widgets
	$active_widgets = array();
	$widgets        = (array) get_option( 'sidebars_widgets' );

	foreach ( $widgets as $k => $w ) {
		if ( 'wp_inactive_widgets' != $k && $k != 'array_version' ) {
			if ( is_array( $widgets[ $k ] ) ) {
				foreach ( $widgets[ $k ] as $v ) {
					$active_widgets[] = $v;
				}
			}
		}
	}
	foreach ( $active_widgets as $aw ) {
		$int = preg_match( '#-([0-9]+)$#i', $aw, $matches );
		if ( $int ) {
			$suffix = $matches[1];
		} else {
			$suffix = 1;
		}
		$name = preg_replace( '#-[0-9]+#', '', $aw );

		$value = get_option( 'widget_' . $name );
		if ( isset( $value[ $suffix ]['title'] ) && $value[ $suffix ]['title'] ) {
			$w_title = $value[ $suffix ]['title'];
		} else {
			$w_title                   = wpml_get_default_widget_title( $aw );
			$value[ $suffix ]['title'] = $w_title;
			update_option( 'widget_' . $name, $value );
		}

		if ( $w_title ) {
			icl_register_string( WPML_ST_WIDGET_STRING_DOMAIN, 'widget title - ' . md5( $w_title ), $w_title );
		}
	}
}

function wpml_get_default_widget_title( $id ) {
	if ( preg_match( '#archives(-[0-9]+)?$#i', $id ) ) {
		$w_title = 'Archives';
	} elseif ( preg_match( '#categories(-[0-9]+)?$#i', $id ) ) {
		$w_title = 'Categories';
	} elseif ( preg_match( '#calendar(-[0-9]+)?$#i', $id ) ) {
		$w_title = 'Calendar';
	} elseif ( preg_match( '#links(-[0-9]+)?$#i', $id ) ) {
		$w_title = 'Links';
	} elseif ( preg_match( '#meta(-[0-9]+)?$#i', $id ) ) {
		$w_title = 'Meta';
	} elseif ( preg_match( '#pages(-[0-9]+)?$#i', $id ) ) {
		$w_title = 'Pages';
	} elseif ( preg_match( '#recent-posts(-[0-9]+)?$#i', $id ) ) {
		$w_title = 'Recent Posts';
	} elseif ( preg_match( '#recent-comments(-[0-9]+)?$#i', $id ) ) {
		$w_title = 'Recent Comments';
	} elseif ( preg_match( '#rss-links(-[0-9]+)?$#i', $id ) ) {
		$w_title = 'RSS';
	} elseif ( preg_match( '#search(-[0-9]+)?$#i', $id ) ) {
		$w_title = 'Search';
	} elseif ( preg_match( '#tag-cloud(-[0-9]+)?$#i', $id ) ) {
		$w_title = 'Tag Cloud';
	} else {
		$w_title = false;
	}
	return $w_title;
}

/**
 * Registers a string for translation
 *
 * @param string|array $context           The context for the string
 * @param string       $name              A name to help the translator understand what’s being translated
 * @param string       $value             The string value
 * @param bool         $allow_empty_value This param is not being used
 * @param string       $source_lang       The language of the registered string. Defaults to 'en'
 *
 * @return int string_id of the just registered string or the id found in the database corresponding to the
 *             input parameters
 * @throws \WPML\Auryn\InjectionException
 */
function icl_register_string( $context, $name, $value, $allow_empty_value = false, $source_lang = '' ) {
	global $WPML_String_Translation;

	if ( ! $name ) {
		$name = md5( $value );
	}

	$strings_language    = $WPML_String_Translation->get_current_string_language( $name );
	$admin_string_filter = $WPML_String_Translation->get_admin_string_filter( $strings_language );

	if ( $admin_string_filter ) {
		$string_id = $admin_string_filter->register_string( $context, $name, $value, $allow_empty_value, $source_lang );
	} else {
		$string_id = null;
	}

	/**
	 * Action runs after string is registered
	 */
	do_action( 'wpml_st_string_registered' );

	return $string_id;
}

/**
 * @since      unknown
 * @deprecated 3.2 use 'wpml_register_string_for_translation' action instead.
 */
add_filter( 'register_string_for_translation', 'icl_register_string', 10, 4 );


/**
 * Registers a string for translation
 *
 * @api
 *
 * @param string $context The context for the string
 * @param string $name A name to help the translator understand what’s being translated
 * @param string $value The string value
 * @param bool   $allow_empty_value This param is not being used
 * @param string $source_lang_code
 */
function wpml_register_single_string_action( $context, $name, $value, $allow_empty_value = false, $source_lang_code = '' ) {
	icl_register_string( $context, $name, $value, $allow_empty_value, $source_lang_code );
}

/**
 * @since 3.2
 * @api
 */
add_action( 'wpml_register_single_string', 'wpml_register_single_string_action', 10, 5 );

/**
 * @param string|array $context
 * @param string       $name
 * @param bool         $value
 * @param bool         $allow_empty_value
 * @param null|bool    $has_translation
 * @param null|string  $target_lang
 *
 * @return bool|string
 */
function icl_translate( $context, $name, $value = false, $allow_empty_value = false, &$has_translation = null, $target_lang = null ) {
	static $translate_wpml_string;

	if ( ! $translate_wpml_string ) {
		/** @var \WPML\ST\TranslateWpmlString $translate_wpml_string */
		$translate_wpml_string = \WPML\Container\make( \WPML\ST\TranslateWpmlString::class );
		$translate_wpml_string->init();
	}

	return $translate_wpml_string->translate( $context, $name, $value, $allow_empty_value, $has_translation, $target_lang );
}

/**
 * @return bool
 */
function wpml_st_is_requested_blog() {
	return ! ( is_multisite() && ms_is_switched() )
		   || (int) $GLOBALS['blog_id'] === (int) end( $GLOBALS['_wp_switched_stack'] );
}

/**
 * @param string $value
 * @param mixed  $context
 * @param string $name
 *
 * @return string
 */
function wpml_get_string_current_translation( $value, $context, $name ) {
	$string_id = icl_get_string_id( $value, $context, $name );

	/** @var WPML_String_Translation $WPML_String_Translation */
	global $WPML_String_Translation;
	$current_lang = $WPML_String_Translation->get_current_string_language( $name );
	$translation  = icl_get_string_by_id( $string_id, $current_lang );

	$value = $translation ? $translation : $value;

	return $value;
}

function icl_st_is_registered_string( $context, $name ) {
	global $wpdb;
	static $cache = array();

	if ( isset( $cache[ $context ][ $name ] ) ) {
		$string_id = $cache[ $context ][ $name ];
	} else {
		$string_id                  = $wpdb->get_var(
			$wpdb->prepare(
				"
          SELECT id
          FROM {$wpdb->prefix}icl_strings
          WHERE context = %s
              AND name = %s
          LIMIT 1",
				$context,
				$name
			)
		);
		$cache[ $context ][ $name ] = $string_id;
	}

	return $string_id;
}

function icl_st_string_has_translations( $context, $name ) {
	global $wpdb;
	$sql = $wpdb->prepare(
		"
        SELECT COUNT(st.id)
        FROM {$wpdb->prefix}icl_string_translations st
        JOIN {$wpdb->prefix}icl_strings s ON s.id=st.string_id
        WHERE s.context = %s AND s.name = %s",
		$context,
		$name
	);

	return $wpdb->get_var( $sql );
}

function icl_update_string_status( $string_id ) {
	global $wpdb;

	$string = new WPML_ST_String( $string_id, $wpdb );

	return $string->update_status();
}

function icl_update_string_status_all() {
	global $wpdb, $sitepress;

	$updater = new WPML_ST_Bulk_Update_Strings_Status( $wpdb, array_keys( $sitepress->get_active_languages() ) );
	$updater->run();
}

/**
 * @param string $context
 * @param string $name
 */
function icl_unregister_string( $context, $name ) {
	global $wpdb;

	$string_id = $wpdb->get_var(
		$wpdb->prepare(
			"
				SELECT id FROM {$wpdb->prefix}icl_strings
            	WHERE context=%s AND name=%s
        	",
			$context,
			$name
		)
	);

	if ( $string_id ) {
		/**
		 * This action is is fired before several strings are deleted at once.
		 *
		 * @param array Here containing only the single string that is deleted.
		 *
		 * @since 3.0.0
		 */
		do_action( 'wpml_st_before_remove_strings', [ $string_id ] );

		$wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->prefix}icl_strings WHERE id=%d", $string_id ) );
		$wpdb->query(
			$wpdb->prepare(
				"DELETE FROM {$wpdb->prefix}icl_string_translations WHERE string_id=%d",
				$string_id
			)
		);
		$wpdb->query(
			$wpdb->prepare(
				"DELETE FROM {$wpdb->prefix}icl_string_positions WHERE string_id=%d",
				$string_id
			)
		);
	}

	/**
	 * Action that fires after string is unregistered
	 */
	do_action( 'wpml_st_string_unregistered' );

	/**
	 * This action is is fired when a string is deleted.
	 *
	 * @param array $string_id
	 */
	do_action( 'icl_st_unregister_string', $string_id );
}

/**
 * @param array $string_ids
 */
function wpml_unregister_string_multi( array $string_ids ) {
	global $wpdb;

	/**
	 * This action is is fired before several strings are deleted at once.
	 *
	 * @param array $string_ids
	 *
	 * @since 3.0.0
	 */
	do_action( 'wpml_st_before_remove_strings', $string_ids );

	$str = wpml_prepare_in( $string_ids, '%d' );
	$wpdb->query(
		"
		DELETE s.*, t.* FROM {$wpdb->prefix}icl_strings s
		LEFT JOIN {$wpdb->prefix}icl_string_translations t ON s.id = t.string_id
        WHERE s.id IN ({$str})
    "
	);
	$wpdb->query( "DELETE FROM {$wpdb->prefix}icl_string_positions WHERE string_id IN ({$str})" );

	/**
	 * This action is fired when several strings are deleted at once.
	 *
	 * @param array $string_ids
	 */
	do_action( 'icl_st_unregister_string_multi', $string_ids );

	/**
	 * Action that fires after strings are unregistered
	 */
	do_action( 'wpml_st_string_unregistered' );
}

/**
 * @since      unknown
 * @deprecated 3.2 use 'wpml_translate_string' filter instead.
 */
function translate_string_filter( $original_value, $context, $name, $has_translation = null, $disable_auto_register = false, $language_code = null ) {
	return icl_t( $context, $name, $original_value, $has_translation, $disable_auto_register, $language_code );
}

/**
 * @since      unknown
 * @deprecated 3.2 use 'wpml_translate_single_string' filter instead.
 */
add_filter( 'translate_string', 'translate_string_filter', 10, 5 );

/**
 * Retrieve a string translation
 * Looks for a string with matching $context and $name.
 * If it finds it, it looks for translation in the current language or the language specified
 * If a translation exists, it will return it. Otherwise, it will return the original string.
 *
 * @api
 *
 * @param string|bool $original_value           The string's original value
 * @param string      $context                  The string's registered context
 * @param string      $name                     The string's registered name
 * @param null|string $language_code            Return the translation in this language
 *                                              Default is NULL which returns the current language
 * @param bool|null   $has_translation          Currently unused. Defaults to NULL
 *
 * @return string
 */
function wpml_translate_single_string_filter( $original_value, $context, $name, $language_code = null, $has_translation = null ) {
	$result = $original_value;
	if ( is_string( $name ) ) {
		$result = icl_translate( $context, $name, $original_value, false, $has_translation, $language_code );
	}

	return $result;
}

/**
 * @api
 * @since 3.2
 */
add_filter( 'wpml_translate_single_string', 'wpml_translate_single_string_filter', 10, 6 );

/**
 * Retrieve a string translation
 * Looks for a string with matching $context and $name.
 * If it finds it, it looks for translation in the current language or the language specified
 * If a translation exists, it will return it. Otherwise, it will return the original string.
 *
 * @param string|bool $original_value           The string's original value
 * @param string      $context                  The string's registered context
 * @param string      $name                     The string's registered name
 * @param bool|null   $has_translation          Currently unused. Defaults to NULL
 * @param bool        $disable_auto_register    Currently unused. Set to false in calling icl_translate
 * @param null|string $language_code            Return the translation in this language
 *                                              Default is NULL which returns the current language
 *
 * @return string
 */
function icl_t( $context, $name, $original_value = false, &$has_translation = null, $disable_auto_register = false, $language_code = null ) {

	return icl_translate( $context, $name, $original_value, false, $has_translation, $language_code );
}

/**
 * @deprecated since WPML ST 3.0.0
 *
 * @param string $name
 *
 * @return bool
 */
function is_translated_admin_string( $name ) {
	return WPML_ST_Blog_Name_And_Description_Hooks::is_string( $name );
}

/**
 * Helper function for icl_t()
 *
 * @param array  $result
 * @param string $original_value
 * @return boolean
 */
function _icl_is_string_change( $result, $original_value ) {

	if ( $result == false ) {
		return false;
	}

	if ( ! isset( $result['value'] ) ) {
		return false;
	}
	return (
				$result['translated'] && $result['original'] != $original_value ||
				! $result['translated'] && $result['value'] != $original_value
			);
}

function icl_add_string_translation( $string_id, $language, $value = null, $status = false, $translator_id = null, $translation_service = null, $batch_id = null ) {
	global $wpdb;

	$string = new WPML_ST_String( $string_id, $wpdb );

	$translated_string_id = $string->set_translation( $language, $value, $status, $translator_id, $translation_service, $batch_id );

	return $translated_string_id;
}

/**
 * Updates the string translation for an admin option
 *
 * @global SitePress               $sitepress
 * @global WPML_String_Translation $WPML_String_Translation
 *
 * @param string   $option_name
 * @param string   $language
 * @param string   $new_value
 * @param int|bool $status
 * @param int      $translator_id
 *
 * @return boolean|mixed
 */
function icl_update_string_translation(
	$option_name,
	$language,
	$new_value = null,
	$status = false,
	$translator_id = null
) {
	/** @var WPML_String_Translation $WPML_String_Translation */
	global $WPML_String_Translation;

	return $WPML_String_Translation->get_admin_option( $option_name, $language )
								->update_option(
									'',
									$new_value,
									$status,
									$translator_id,
									0
								);
}

/**
 * @param string     $string
 * @param string     $context
 * @param bool|false $name
 *
 * @return int
 * @throws \WPML\Auryn\InjectionException
 */
function icl_get_string_id( $string, $context, $name = false ) {
	return WPML\Container\make( 'WPML_ST_String_Factory' )->get_string_id( $string, $context, $name );
}

function icl_get_string_translations() {
	global $sitepress, $wpdb, $wp_query;

	$WPML_ST_Strings = new WPML_ST_Strings( $sitepress, $wpdb, $wp_query );
	return $WPML_ST_Strings->get_string_translations();
}

/** *
 *
 * @param int          $string_id     ID of string in icl_strings DB table
 * @param string|false $language_code false, or language code
 *
 * @return string|false
 */
function icl_get_string_by_id( $string_id, $language_code = false ) {
	global $wpdb, $sitepress_settings;

	$result = $wpdb->get_row(
		$wpdb->prepare(
			"SELECT value, language FROM {$wpdb->prefix}icl_strings WHERE id=%d",
			$string_id
		)
	);

	if ( $result && ( ! $language_code || $language_code === $result->language ) ) {
		return $result->value;
	}

	if ( ! $language_code ) {
		if ( isset( $sitepress_settings['st']['strings_language'] ) ) {
			$language_code = $sitepress_settings['st']['strings_language'];
		} else {
			return false;
		}
	}

	$translations = icl_get_string_translations_by_id( $string_id );
	if ( isset( $translations[ $language_code ] ) ) {
		return $translations[ $language_code ]['value'];
	}

	return false;
}

function icl_get_string_translations_by_id( $string_id ) {
	global $wpdb;

	$found        = false;
	$translations = WPML_Non_Persistent_Cache::get( $string_id, 'icl_get_string_translations_by_id', $found );
	if ( ! $found ) {
		$translations = array();

		if ( $string_id ) {
			$results = $wpdb->get_results( $wpdb->prepare( "SELECT language, value, status FROM {$wpdb->prefix}icl_string_translations WHERE string_id=%d", $string_id ) );
			foreach ( $results as $row ) {
				$translations[ $row->language ] = array(
					'value'  => $row->value,
					'status' => $row->status,
				);
			}
		}
		WPML_Non_Persistent_Cache::set( $string_id, $translations, 'icl_get_string_translations_by_id' );
	}

	return $translations;

}

/**
 * @param array<string,mixed> $string_translations
 *
 * @return string[]
 */
function icl_get_strings_tracked_in_pages( $string_translations ) {
	global $wpdb;
	// get string position in page - if found
	$found_strings = $strings_in_page = array();
	foreach ( array_keys( (array) $string_translations ) as $string_id ) {
		$found_strings[] = $string_id;
	}
	if ( $found_strings ) {
		$res = $wpdb->get_results(
			"
            SELECT kind, string_id  FROM {$wpdb->prefix}icl_string_positions
            WHERE string_id IN (" . wpml_prepare_in( $found_strings, '%d' ) . ')'
		);
		foreach ( $res as $row ) {
			$strings_in_page[ $row->kind ][ $row->string_id ] = true;
		}
	}
	return $strings_in_page;
}

function icl_sw_filters_widget_title( $val ) {
	$val = icl_translate( WPML_ST_WIDGET_STRING_DOMAIN, 'widget title - ' . md5( $val ), $val );
	return $val;
}

function icl_sw_filters_widget_text( $val ) {
	$val = icl_translate( WPML_ST_WIDGET_STRING_DOMAIN, 'widget body - ' . md5( $val ), $val );
	return $val;
}

/**
 * @param string       $translation String This parameter is not important to the filter since we filter before other filters.
 * @param string       $text
 * @param string|array $domain
 * @param bool|string  $name
 *
 * @return string
 * @throws \WPML\Auryn\InjectionException
 * @deprecated since WPML ST 3.0.0
 *
 */
function icl_sw_filters_gettext( $translation, $text, $domain, $name = false ) {
	static $gettext_hooks;

	if ( null === $gettext_hooks ) {
		$factory       = WPML\Container\make( HooksFactory::class );
		$gettext_hooks = $factory->create();
		$gettext_hooks = $gettext_hooks ?: false;
	}

	return $gettext_hooks ? $gettext_hooks->gettext_filter( $translation, $text, $domain, $name ) : $translation;
}

/**
 * @return bool
 * @throws \WPML\Auryn\InjectionException
 * @deprecated since WPML ST 3.0.0
 *
 */
function icl_sw_must_track_strings() {
	/** @var \WPML\ST\Gettext\Hooks $gettext_hooks */
	$gettext_hooks = WPML\Container\make( Hooks::class );

	if ( method_exists( $gettext_hooks, 'must_track_strings' ) ) {
		return $gettext_hooks->must_track_strings();
	}

	return false;
}

function icl_st_track_string( $text, $domain, $kind = ICL_STRING_TRANSLATION_STRING_TRACKING_TYPE_PAGE ) {

	if ( is_multisite() && ms_is_switched() ) {
		return;
	}

	require_once dirname( __FILE__ ) . '/gettext/wpml-string-scanner.class.php';

	static $string_scanner = null;
	if ( ! $string_scanner ) {
		try {
			$wp_filesystem  = wpml_get_filesystem_direct();
			$string_scanner = new WPML_String_Scanner( $wp_filesystem, new WPML_ST_File_Hashing() );
		} catch ( Exception $e ) {
			trigger_error( $e->getMessage(), E_USER_WARNING );
		}
	}

	if ( $string_scanner ) {
		$string_scanner->track_string( $text, $domain, $kind );
	}
}

/**
 * @param string $translation
 * @param string $text
 * @param string $_gettext_context
 * @param string $domain
 *
 * @return string
 * @throws \WPML\Auryn\InjectionException
 * @deprecated since WPML ST 3.0.0
 *
 */
function icl_sw_filters_gettext_with_context( $translation, $text, $_gettext_context, $domain ) {
	if ( $_gettext_context ) {
		return icl_sw_filters_gettext(
			$translation,
			$text,
			array(
				'domain'  => $domain,
				'context' => $_gettext_context,
			)
		);
	} else {
		return icl_sw_filters_gettext( $translation, $text, $domain );
	}
}

/**
 * @param string       $translation
 * @param string       $single
 * @param string       $plural
 * @param string       $number
 * @param string|array $domain
 * @param string|false $_gettext_context
 *
 * @return string
 * @throws \WPML\Auryn\InjectionException
 * @deprecated since WPML ST 3.0.0
 *
 */
function icl_sw_filters_ngettext( $translation, $single, $plural, $number, $domain, $_gettext_context = false ) {
	if ( $number == 1 ) {
		return icl_sw_filters_gettext_with_context( $translation, $single, $_gettext_context, $domain );
	} else {
		return icl_sw_filters_gettext_with_context( $translation, $plural, $_gettext_context, $domain );
	}
}

/**
 * @param string $translation
 * @param string $single
 * @param string $plural
 * @param string $number
 * @param string $_gettext_context
 * @param string $domain
 *
 * @return string
 * @throws \WPML\Auryn\InjectionException
 * @deprecated since WPML ST 3.0.0
 *
 */
function icl_sw_filters_nxgettext( $translation, $single, $plural, $number, $_gettext_context, $domain ) {
	return icl_sw_filters_ngettext( $translation, $single, $plural, $number, $domain, $_gettext_context );
}

/**
 * @return array Translated User IDs
 */
function icl_st_register_user_strings_all() {
	global $sitepress, $authordata;
	$wpml_translated_users = new WPML_ST_User_Fields( $sitepress, $authordata );
	$processedIds = $wpml_translated_users->init_register_strings();

	/**
	 * Actions runs after user strings are registered
	 */
	do_action( 'wpml_st_string_registered' );

	return $processedIds;
}

function icl_st_update_string_actions( $context, $name, $old_value, $new_value, $force_complete = false ) {
	if ( class_exists( 'WPML_WPDB_User' ) ) {
		global $wpdb;
		require_once dirname( __FILE__ ) . '/wpml-st-string-update.class.php';

		$string_update = new WPML_ST_String_Update( $wpdb );
		$string_update->update_string( $context, $name, $old_value, $new_value, $force_complete );

		/**
		 * Action that runs after registered strings are updated
		 */
		do_action( 'wpml_st_string_updated' );
	}
}

/**
 * @param array<string,mixed> $old_options
 * @param array<string,mixed> $new_options
 *
 * @throws \WPML\Auryn\InjectionException
 */
function icl_st_update_widget_title_actions( $old_options, $new_options ) {

	if ( isset( $new_options['title'] ) ) { // case of 1 instance only widgets
		$buf = $new_options;
		unset( $new_options );
		$new_options[0] = $buf;
		unset( $buf );
		$buf = $old_options;
		unset( $old_options );
		$old_options[0] = $buf;
		unset( $buf );
	}

	$defaultLang = Languages::getDefaultCode();

	foreach ( $new_options as $k => $o ) {
		if ( isset( $o['title'] ) ) {
			if ( isset( $old_options[ $k ]['title'] ) && $old_options[ $k ]['title'] ) {
				icl_st_update_string_actions( WPML_ST_WIDGET_STRING_DOMAIN, 'widget title - ' . md5( $old_options[ $k ]['title'] ), $old_options[ $k ]['title'], $o['title'] );
			} else {
				if ( $new_options[ $k ]['title'] ) {
					icl_register_string( WPML_ST_WIDGET_STRING_DOMAIN, 'widget title - ' . md5( $new_options[ $k ]['title'] ), $new_options[ $k ]['title'], false, $defaultLang );
				}
			}
		}
	}
}

/**
 * @param array<string,mixed> $old_options
 * @param array<string,mixed> $new_options
 *
 * @throws \WPML\Auryn\InjectionException
 */
function icl_st_update_text_widgets_actions( $old_options, $new_options ) {
	global $wpdb;

	// remove filter for showing permalinks instead of sticky links while saving
	$GLOBALS['__disable_absolute_links_permalink_filter'] = 1;

	$widget_text = get_option( 'widget_text' );
	if ( is_array( $widget_text ) ) {
	    $defaultLang = Languages::getDefaultCode();

		foreach ( $widget_text as $k => $w ) {
			if ( isset( $old_options[ $k ]['text'] ) && trim( $old_options[ $k ]['text'] ) && $old_options[ $k ]['text'] != $w['text'] ) {
				$old_md5 = md5( $old_options[ $k ]['text'] );
				$string  = $wpdb->get_row( $wpdb->prepare( "SELECT id, value, status FROM {$wpdb->prefix}icl_strings WHERE context=%s AND name=%s", WPML_ST_WIDGET_STRING_DOMAIN, 'widget body - ' . $old_md5 ) );
				if ( $string ) {
					icl_st_update_string_actions( WPML_ST_WIDGET_STRING_DOMAIN, 'widget body - ' . $old_md5, $old_options[ $k ]['text'], $w['text'] );
				} else {
					icl_register_string( WPML_ST_WIDGET_STRING_DOMAIN, 'widget body - ' . md5( $w['text'] ), $w['text'], false, $defaultLang );
				}
			} elseif ( isset( $new_options[ $k ]['text'] ) && ( ! isset( $old_options[ $k ]['text'] ) || $old_options[ $k ]['text'] != $new_options[ $k ]['text'] ) ) {
				icl_register_string( WPML_ST_WIDGET_STRING_DOMAIN, 'widget body - ' . md5( $new_options[ $k ]['text'] ), $new_options[ $k ]['text'], false, $defaultLang );
			}
		}
	}

	// add back the filter for showing permalinks instead of sticky links after saving
	unset( $GLOBALS['__disable_absolute_links_permalink_filter'] );

}

function icl_st_get_contexts( $status ) {
	global $sitepress, $wpdb, $wp_query;

	$wpml_strings = new WPML_ST_Strings( $sitepress, $wpdb, $wp_query );
	return $wpml_strings->get_per_domain_counts( $status );
}

function icl_st_admin_notices() {
	global $icl_st_err_str;
	if ( $icl_st_err_str ) {
		echo '<div class="error"><p>' . $icl_st_err_str . '</p></div>';
	}
}

function icl_st_generate_po_file( $strings ) {

	require_once WPML_ST_PATH . '/inc/gettext/wpml-po-parser.class.php';

	$po = WPML_PO_Parser::create_po( $strings );

	return $po;
}

function _icl_st_get_options_writes( $path ) {
	static $found_writes = array();
	if ( is_dir( $path ) ) {
		$dh = opendir( $path );
		while ( $file = readdir( $dh ) ) {
			if ( $file == '.' || $file == '..' ) {
				continue;
			}
			if ( is_dir( $path . '/' . $file ) ) {
				_icl_st_get_options_writes( $path . '/' . $file );
			} elseif ( preg_match( '#(\.php|\.inc)$#i', $file ) ) {
				$content = file_get_contents( $path . '/' . $file );
				$int     = preg_match_all( '#(add|update)_option\(([^,]+),([^)]+)\)#im', $content, $matches );
				if ( $int ) {
					foreach ( $matches[2] as $m ) {
						$option_name = trim( $m );
						if ( 0 === strpos( $option_name, '"' ) || 0 === strpos( $option_name, "'" ) ) {
							$option_name = trim( $option_name, "\"'" );
						} elseif ( false === strpos( $option_name, '$' ) ) {
							if ( false !== strpos( $option_name, '::' ) ) {
								$cexp = explode( '::', $option_name );
								if ( class_exists( $cexp[0] ) ) {
									if ( defined( $cexp[0] . '::' . $cexp[1] ) ) {
										$option_name = constant( $cexp[0] . '::' . $cexp[1] );
									}
								}
							} else {
								if ( defined( $option_name ) ) {
									$option_name = constant( $option_name );
								}
							}
						} else {
							$option_name = false;
						}
						if ( $option_name ) {
							$found_writes[] = $option_name;
						}
					}
				}
			}
		}
	}
	return $found_writes;
}

if ( ! function_exists( 'array_unique_recursive' ) ) {
	function array_unique_recursive( $array ) {
		$scalars = array();
		foreach ( $array as $key => $value ) {
			if ( is_scalar( $value ) ) {
				if ( isset( $scalars[ $value ] ) ) {
					unset( $array[ $key ] );
				} else {
					$scalars[ $value ] = true;
				}
			} elseif ( is_array( $value ) ) {
				$array[ $key ] = array_unique_recursive( $value );
			}
		}

		return $array;
	}
}

function _icl_st_filter_empty_options_out( $array ) {
	$empty_found = false;
	foreach ( $array as $k => $v ) {
		if ( is_array( $v ) && ! empty( $v ) ) {
			list($array[ $k ], $empty_found) = _icl_st_filter_empty_options_out( $v );
		} else {
			if ( empty( $v ) ) {
				unset( $array[ $k ] );
				$empty_found = true;
			}
		}
	}
	return array( $array, $empty_found );
}

function wpml_register_admin_strings( $serialized_array ) {
	try {
		wpml_st_load_admin_texts()->icl_register_admin_options( unserialize( $serialized_array ) );
	} catch ( Exception $e ) {
		trigger_error( $e->getMessage(), E_USER_WARNING );
	}
}

function icl_is_string_translation( $translation ) {
	// determine if the $translation data is for string translation.

	foreach ( $translation as $key => $value ) {
		if ( $key == 'body' or $key == 'title' ) {
			return false;
		}
		if ( preg_match( '/string-(.*)/', $key ) ) {
			return true;
		}
	}

	// if we get here assume it's not a string.
	return false;

}

function icl_translation_add_string_translation( $rid, $translation, $lang_code ) {
	global $wpdb;
	foreach ( $translation as $key => $value ) {
		if ( preg_match( '/string-(.*)/', $key, $match ) ) {
			$string_id = $match[1];

			$string_translation_id = $wpdb->get_var(
				$wpdb->prepare(
					"SELECT id
                                                      FROM {$wpdb->prefix}icl_string_translations
                                                      WHERE string_id=%d AND language=%s",
					$string_id,
					$lang_code
				)
			);

			$md5_when_sent        = $wpdb->get_var(
				$wpdb->prepare(
					"	SELECT md5
																		FROM {$wpdb->prefix}icl_string_status
                														WHERE rid=%d AND string_translation_id=%d",
					$rid,
					$string_translation_id
				)
			);
			$current_string_value = $wpdb->get_var(
				$wpdb->prepare(
					"	SELECT value
																		FROM {$wpdb->prefix}icl_strings
																		WHERE id=%d",
					$string_id
				)
			);
			if ( $md5_when_sent == md5( $current_string_value ) ) {
				$status = ICL_TM_COMPLETE;
			} else {
				$status = ICL_TM_NEEDS_UPDATE;
			}
			$value = str_replace( '&#0A;', "\n", $value );
			icl_add_string_translation( $string_id, $lang_code, html_entity_decode( $value ), $status );
		}
	}

	return true;
}

function icl_st_admin_notices_string_updated() {
	?>
	<div class="updated">
			<p><?php _e( 'Strings translations updated', 'wpml-string-translation' ); ?></p>
	</div>
	<?php
}

/**
 * @param string $path
 *
 * @return bool
 */
function wpml_st_file_path_is_valid( $path ) {
	return (bool) ( validate_file( $path ) === 0 || validate_file( $path ) === 2 );
}

/**
 * @param string|array $context
 *
 * @return array
 */
function wpml_st_extract_context_parameters( $context ) {
	if ( is_array( $context ) ) {
		$domain          = isset( $context['domain'] ) ? $context['domain'] : '';
		$gettext_context = isset( $context['context'] ) ? $context['context'] : '';
	} else {
		$domain          = $context;
		$gettext_context = '';
	}

	return array( $domain, $gettext_context );
}
