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<?php

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/**

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* Class WPML_Flags

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* @package wpml-core

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class WPML_Flags {

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/** @var icl_cache */

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private $cache;

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/** @var WPDB $wpdb */

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private $wpdb;

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/** @var WP_Filesystem_Direct */

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private $filesystem;

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/**

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* @param WPDB $wpdb

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* @param icl_cache $cache

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* @param WP_Filesystem_Direct $filesystem

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public function __construct( $wpdb, icl_cache $cache, WP_Filesystem_Direct $filesystem ) {

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$this->wpdb = $wpdb;

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$this->cache = $cache;

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$this->filesystem = $filesystem;

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}

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/**

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* @param $lang_code

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* @return bool|object

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public function get_flag( $lang_code ) {

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$flag = $this->cache->get( $lang_code );

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if ( ! $flag ) {

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$flag = $this->wpdb->get_row( $this->wpdb->prepare( "SELECT flag, from_template

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FROM {$this->wpdb->prefix}icl_flags

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WHERE lang_code=%s", $lang_code ) );

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$this->cache->set( $lang_code, $flag );

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}

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return $flag;

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}

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public function get_flag_url( $lang_code ) {

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$flag = $this->get_flag( $lang_code );

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if ( ! $flag ) {

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return '';

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}

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$path = '';

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if ( $flag->from_template ) {

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$wp_upload_dir = wp_upload_dir();

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$base_url = $wp_upload_dir['baseurl'];

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$path = 'flags/';

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} else {

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$base_url = $this->get_wpml_flags_url();

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}

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$path .= $flag->flag;

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return $this->append_path_to_url( $base_url, $path );

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}

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public function clear() {

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$this->cache->clear();

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}

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/**

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* @param array $allowed_file_types

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* @return string[]

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public function get_wpml_flags( $allowed_file_types = null ) {

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if ( null === $allowed_file_types ) {

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$allowed_file_types = array( 'gif', 'jpeg', 'png', 'svg' );

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}

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$files = array_keys( $this->filesystem->dirlist( $this->get_wpml_flags_directory(), false ) );

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$result = $this->filter_flag_files( $allowed_file_types, $files );

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sort( $result );

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return $result;

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}

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/**

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* @return string

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public final function get_wpml_flags_directory() {

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return WPML_PLUGIN_PATH . '/res/flags/';

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}

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/**

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* @return string

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public final function get_wpml_flags_url() {

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return ICL_PLUGIN_URL . '/res/flags/';

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}

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/**

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* @param array $allowed_file_types

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* @param array $files

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* @return array

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private function filter_flag_files( $allowed_file_types, $files ) {

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$result = array();

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foreach ( $files as $file ) {

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$path = $this->get_wpml_flags_directory() . $file;

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if ( $this->filesystem->exists( $path ) ) {

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$ext = pathinfo( $path, PATHINFO_EXTENSION );

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if ( in_array( $ext, $allowed_file_types, true ) ) {

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$result[] = $file;

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}

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}

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}

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return $result;

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}

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/**

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* @param $base_url

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* @param $path

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* @return string

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private function append_path_to_url( $base_url, $path ) {

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$base_url_parts = wp_parse_url( $base_url );

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$base_url_path_components = array();

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if ( array_key_exists( 'path', $base_url_parts ) ) {

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$base_url_path_components = explode( '/', untrailingslashit( $base_url_parts['path'] ) );

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}

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$sub_dir_path_components = explode( '/', trim( $path, '/' ) );

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foreach ( $sub_dir_path_components as $sub_dir_path_part ) {

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$base_url_path_components[] = $sub_dir_path_part;

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}

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$base_url_parts['path'] = implode( '/', $base_url_path_components );

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return http_build_url( $base_url_parts );

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}

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}

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