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<?php
/**
* Css handler.
*
* @package ThemeIsle\GutenbergBlocks\CSS
*/
namespace ThemeIsle\GutenbergBlocks\CSS;
use ThemeIsle\GutenbergBlocks\Base_CSS;
use tubalmartin\CssMin\Minifier as CSSmin;
/**
* Class CSS_Handler
*/
class CSS_Handler extends Base_CSS {
/**
* The main instance var.
*
* @var CSS_Handler
*/
public static $instance = null;
/**
* Initialize the class
*/
public function init() {
add_action( 'rest_api_init', array( $this, 'register_routes' ) );
add_action( 'rest_api_init', array( $this, 'autoload_block_classes' ) );
add_action( 'before_delete_post', array( __CLASS__, 'delete_css_file' ) );
add_action( 'customize_save_after', array( __CLASS__, 'save_widgets_styles' ) );
}
/**
* Register REST API route
*
* @since 1.3.0
* @access public
*/
public function register_routes() {
$namespace = $this->namespace . $this->version;
register_rest_route(
$namespace,
'/post_styles/(?P<id>\d+)',
array(
array(
'methods' => \WP_REST_Server::EDITABLE,
'callback' => array( $this, 'save_post_meta' ),
'args' => array(
'id' => array(
'type' => 'integer',
'required' => true,
'description' => __( 'ID of the Post.', 'otter-blocks' ),
'validate_callback' => function ( $param, $request, $key ) {
return is_numeric( $param );
},
),
),
'permission_callback' => function () {
return current_user_can( 'publish_posts' );
},
),
)
);
register_rest_route(
$namespace,
'/block_styles/(?P<id>\d+)',
array(
array(
'methods' => \WP_REST_Server::EDITABLE,
'callback' => array( $this, 'save_block_meta' ),
'args' => array(
'id' => array(
'type' => 'integer',
'required' => true,
'description' => __( 'ID of the Reusable Block.', 'otter-blocks' ),
'validate_callback' => function ( $param, $request, $key ) {
return is_numeric( $param );
},
),
),
'permission_callback' => function () {
return current_user_can( 'publish_posts' );
},
),
)
);
register_rest_route(
$namespace,
'/widget_styles',
array(
array(
'methods' => \WP_REST_Server::EDITABLE,
'callback' => array( $this, 'save_widgets_styles' ),
'permission_callback' => function () {
return current_user_can( 'edit_theme_options' );
},
),
)
);
}
/**
* Function to save post CSS.
*
* @param \WP_REST_Request $request Rest request.
*
* @return mixed
* @since 1.3.0
* @access public
*/
public function save_post_meta( \WP_REST_Request $request ) {
if ( ! current_user_can( 'edit_posts' ) ) {
return false;
}
$post_id = $request->get_param( 'id' );
self::generate_css_file( $post_id );
return rest_ensure_response( array( 'message' => __( 'CSS updated.', 'otter-blocks' ) ) );
}
/**
* Generate CSS file.
*
* @param int $post_id Post id.
*/
public static function generate_css_file( $post_id ) {
$css = self::instance()->get_blocks_css( $post_id );
self::save_css_file( $post_id, $css );
}
/**
* Get CSS url for post.
*
* @param int/string $type Post ID or Widget.
*
* @return string File url.
*/
public static function get_css_url( $type = 'widgets' ) {
$file_name = '';
if ( 'widgets' === $type ) {
$file_name = get_option( 'themeisle_blocks_widgets_css_file' );
} else {
$file_name = get_post_meta( $type, '_themeisle_gutenberg_block_stylesheet', true );
}
if ( empty( $file_name ) ) {
return false;
}
$wp_upload_dir = wp_upload_dir( null, false );
$baseurl = $wp_upload_dir['baseurl'] . '/themeisle-gutenberg/';
return $baseurl . $file_name . '.css';
}
/**
* Check if we have a CSS file for this post.
*
* @param int/string $type Post ID or Widget.
*
* @return bool
*/
public static function has_css_file( $type = 'widgets' ) {
$file_name = '';
if ( 'widgets' === $type ) {
$file_name = get_option( 'themeisle_blocks_widgets_css_file' );
} else {
$file_name = get_post_meta( $type, '_themeisle_gutenberg_block_stylesheet', true );
}
if ( empty( $file_name ) ) {
return false;
}
$wp_upload_dir = wp_upload_dir( null, false );
$basedir = $wp_upload_dir['basedir'] . '/themeisle-gutenberg/';
$file_path = $basedir . $file_name . '.css';
return is_file( $file_path );
}
/**
* Function to save reusable block CSS.
*
* @param \WP_REST_Request $request Rest request.
*
* @return mixed
* @since 1.3.0
* @access public
*/
public function save_block_meta( \WP_REST_Request $request ) {
if ( ! current_user_can( 'edit_posts' ) ) {
return false;
}
$post_id = $request->get_param( 'id' );
$css = $this->get_reusable_block_css( $post_id );
self::save_css_file( $post_id, $css );
return rest_ensure_response( array( 'message' => __( 'CSS updated.', 'otter-blocks' ) ) );
}
/**
* Function to save CSS into WordPress Filesystem.
*
* @param int $post_id Post id.
* @param string $css CSS string.
*
* @return bool
* @since 1.3.0
* @access public
*/
public static function save_css_file( $post_id, $css ) {
if ( empty( $css ) ) {
return self::delete_css_file( $post_id );
}
global $wp_filesystem;
require_once ABSPATH . '/wp-admin/includes/file.php';
WP_Filesystem();
$file_name = 'post-v2-' . $post_id . '-' . time();
$wp_upload_dir = wp_upload_dir( null, false );
$upload_dir = $wp_upload_dir['basedir'] . '/themeisle-gutenberg/';
$file_path = $upload_dir . $file_name . '.css';
$css = wp_filter_nohtml_kses( $css );
$css = self::compress( $css );
update_post_meta( $post_id, '_themeisle_gutenberg_block_styles', $css );
$existing_file = get_post_meta( $post_id, '_themeisle_gutenberg_block_stylesheet', true );
$existing_file_path = $upload_dir . $existing_file . '.css';
if ( $existing_file && is_file( $existing_file_path ) ) {
self::delete_css_file( $post_id );
}
if ( count( self::$google_fonts ) > 0 ) {
update_post_meta( $post_id, '_themeisle_gutenberg_block_fonts', self::$google_fonts );
} else {
if ( get_post_meta( $post_id, '_themeisle_gutenberg_block_fonts', true ) ) {
delete_post_meta( $post_id, '_themeisle_gutenberg_block_fonts' );
}
}
if ( self::is_writable() ) {
$target_dir = $wp_filesystem->is_dir( $upload_dir );
if ( ! $wp_filesystem->is_writable( $wp_upload_dir['basedir'] ) ) {
return false;
}
if ( ! $target_dir ) {
wp_mkdir_p( $upload_dir );
}
$wp_filesystem->put_contents( $file_path, $css, FS_CHMOD_FILE );
if ( file_exists( $file_path ) ) {
update_post_meta( $post_id, '_themeisle_gutenberg_block_stylesheet', $file_name );
}
}
return true;
}
/**
* Function to delete CSS from WordPress Filesystem.
*
* @param int $post_id Post id.
*
* @return bool
* @since 1.3.0
* @access public
*/
public static function delete_css_file( $post_id ) {
global $wp_filesystem;
if ( ! current_user_can( 'edit_posts' ) ) {
return false;
}
require_once ABSPATH . '/wp-admin/includes/file.php';
WP_Filesystem();
$wp_upload_dir = wp_upload_dir( null, false );
if ( ! $wp_filesystem->is_writable( $wp_upload_dir['basedir'] ) ) {
return;
}
$file_name = get_post_meta( $post_id, '_themeisle_gutenberg_block_stylesheet', true );
if ( $file_name ) {
delete_post_meta( $post_id, '_themeisle_gutenberg_block_stylesheet' );
}
$upload_dir = $wp_upload_dir['basedir'] . '/themeisle-gutenberg/';
$file_path = $upload_dir . $file_name . '.css';
if ( ! file_exists( $file_path ) || ! self::is_writable() ) {
return;
}
$wp_filesystem->delete( $file_path, true );
return true;
}
/**
* Function to save/resave widget styles.
*
* @return bool
* @since 1.7.0
* @access public
*/
public static function save_widgets_styles() {
global $wp_filesystem;
require_once ABSPATH . '/wp-admin/includes/file.php';
WP_Filesystem();
$css = self::instance()->get_widgets_css();
if ( empty( $css ) ) {
$file_path = get_option( 'themeisle_blocks_widgets_css_file' );
if ( ! file_exists( $file_path ) ) {
return false;
}
delete_option( 'themeisle_blocks_widgets_css_file' );
delete_option( 'themeisle_blocks_widgets_css' );
return $wp_filesystem->delete( $file_path, true );
}
if ( count( self::$google_fonts ) > 0 ) {
update_option( 'themeisle_blocks_widgets_fonts', self::$google_fonts );
} else {
if ( get_option( 'themeisle_blocks_widgets_fonts' ) ) {
delete_option( 'themeisle_blocks_widgets_fonts' );
}
}
$file_name = 'widgets-' . time();
$wp_upload_dir = wp_upload_dir( null, false );
$upload_dir = $wp_upload_dir['basedir'] . '/themeisle-gutenberg/';
$file_path = $upload_dir . $file_name . '.css';
$css = wp_filter_nohtml_kses( $css );
$css = self::compress( $css );
update_option( 'themeisle_blocks_widgets_css', $css );
if ( self::is_writable() ) {
$existing_file = get_option( 'themeisle_blocks_widgets_css_file' );
$existing_file_path = $upload_dir . $existing_file . '.css';
if ( $existing_file && is_file( $existing_file_path ) ) {
$wp_filesystem->delete( $existing_file_path, true );
}
$target_dir = $wp_filesystem->is_dir( $upload_dir );
if ( ! $wp_filesystem->is_writable( $wp_upload_dir['basedir'] ) ) {
return false;
}
if ( ! $target_dir ) {
wp_mkdir_p( $upload_dir );
}
$wp_filesystem->put_contents( $file_path, $css, FS_CHMOD_FILE );
if ( file_exists( $file_path ) ) {
update_option( 'themeisle_blocks_widgets_css_file', $file_name );
}
}
return true;
}
/**
* Check if the path is writable.
*
* @return boolean
* @since 2.0.0
* @access public
*/
public static function is_writable() {
global $wp_filesystem;
include_once ABSPATH . 'wp-admin/includes/file.php';
WP_Filesystem();
$wp_upload_dir = wp_upload_dir( null, false );
$upload_dir = $wp_upload_dir['basedir'];
if ( ! function_exists( 'WP_Filesystem' ) ) {
return false;
}
$writable = WP_Filesystem( false, $upload_dir );
return $writable && 'direct' === $wp_filesystem->method;
}
/**
* Compress CSS
*
* @param string $css Compress css.
*
* @return string Compressed css.
* @since 1.3.0
* @access public
*/
public static function compress( $css ) {
$compressor = new CSSmin();
// Override any PHP configuration options before calling run().
$compressor->setMemoryLimit( '256M' );
$compressor->setMaxExecutionTime( 120 );
$compressor->setPcreBacktrackLimit( 3000000 );
$compressor->setPcreRecursionLimit( 150000 );
$css = htmlspecialchars_decode( $css );
$css = $compressor->run( $css );
return $css;
}
/**
* The instance method for the static class.
* Defines and returns the instance of the static class.
*
* @static
* @return CSS_Handler
* @since 1.3.0
* @access public
*/
public static function instance() {
if ( is_null( self::$instance ) ) {
self::$instance = new self();
self::$instance->init();
}
return self::$instance;
}
/**
* Throw error on object clone
*
* The whole idea of the singleton design pattern is that there is a single
* object therefore, we don't want the object to be cloned.
*
* @access public
* @return void
* @since 1.3.0
*/
public function __clone() {
// Cloning instances of the class is forbidden.
_doing_it_wrong( __FUNCTION__, esc_html__( 'Cheatin’ huh?', 'otter-blocks' ), '1.0.0' );
}
/**
* Disable unserializing of the class
*
* @access public
* @return void
* @since 1.3.0
*/
public function __wakeup() {
// Unserializing instances of the class is forbidden.
_doing_it_wrong( __FUNCTION__, esc_html__( 'Cheatin’ huh?', 'otter-blocks' ), '1.0.0' );
}
}
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