base_path = trailingslashit( ABSPATH );
$this->base_url = trailingslashit( get_home_url() );
$this->default_cache_path = trailingslashit( WP_CONTENT_DIR ) . 'cache/awpp/';
$this->minify_files = [ 'css', 'js' ];
$this->options = get_option( AWPP_SETTINGS_OPTION );
}
public function run() {
add_action( 'awpp_settings', [ $this, 'register_settings' ] );
add_action( 'admin_bar_menu', [ $this, 'add_toolbar_item' ] );
add_action( 'wp_ajax_awpp_do_clear_minify_cache', [ $this, 'clear_cache' ] );
add_filter( 'script_loader_src', [ $this, 'change_url' ], 30, 1 );
add_filter( 'style_loader_src', [ $this, 'change_url' ], 30, 1 );
}
public function register_settings() {
$section = awpp_settings()->add_section( awpp_settings_page_assets(), 'minify', __( 'Minify', 'awpp' ) );
awpp_settings()->add_checkbox( $section, 'minify', __( 'Minify CSS and JS Files', 'awpp' ), true );
}
public function add_toolbar_item( $wp_admin_bar ) {
$cache_dir = $this->get_cache_dir();
$file_count = 0;
$file_size = 0;
foreach ( $this->minify_files as $folder ) {
$dir = $cache_dir . $folder . '/';
if ( ! is_dir( $dir ) ) {
mkdir( $dir, 0777, true );
}
$files = scandir( $dir );
foreach ( $files as $file ) {
if ( '.' == $file || '..' == $file ) {
continue;
}
//echo $dir . $file . ': ' . filesize( $dir . $file ) . '
';
$file_count ++;
$file_size = $file_size + filesize( $dir . $file );
}
}
$file_size = $this->format_bytes( $file_size );
// translators: x Files, x kB
$text = sprintf( _n( '%1$s File, %2$s', '%1$s Files, %2$s', $file_count, 'awpp' ), "$file_count", "$file_size" );
$html = '';
$html .= $text;
$html .= '';
$html .= '
';
$args = [
'id' => awpp_get_instance()->Init->admin_bar_id . '-minify',
'parent' => awpp_get_instance()->Init->admin_bar_id,
'title' => 'Minify Cache',
'href' => '',
'meta' => [
'class' => awpp_get_instance()->prefix . '-adminbar-minify ' . ( awpp_get_setting( 'minify' ) ? '' : 'disabled' ),
'html' => '' . $html . '
',
],
];
$wp_admin_bar->add_node( $args );
}
public function clear_cache() {
if ( ! wp_verify_nonce( $_POST['nonce'], 'awpp-clear-cache-nonce' ) ) {
awpp_exit_ajax( 'error', __( 'Invalid nonce', 'awpp' ) );
}
$cache_dir = $this->get_cache_dir();
$files_deleted = 0;
foreach ( $this->minify_files as $folder ) {
$files_deleted = $files_deleted + $this->rrmdir( "{$cache_dir}{$folder}/" );
}
awpp_exit_ajax( 'success', sprintf( '%s Files deleted', $files_deleted ) );
}
public function change_url( $url ) {
if ( is_admin() ) {
return $url;
}
if ( ! awpp_get_setting( 'minify' ) ) {
return $url;
}
$cache_dir = $this->get_cache_dir();
$type = '';
foreach ( $this->minify_files as $file ) {
if ( strpos( $url, '.' . $file ) !== false ) {
$type = $file;
}
}
if ( '' == $type ) {
return $url;
}
if ( strpos( $url, $this->base_url ) === false ) {
return $url;
}
$new_filename = str_replace( $this->base_url, '', $url );
$new_filename = hash( 'crc32', $new_filename, false ); // todo: check if those filenames are always(!) unique
$new_filename = $new_filename . '.' . $type;
$cache_type_dir = $cache_dir . $type . '/';
$new_path = $cache_type_dir . $new_filename;
$old_path = str_replace( $this->base_url, $this->base_path, $url );
$new_url = str_replace( $this->base_path, $this->base_url, $new_path );
if ( strpos( $old_path, '?' ) != false ) {
$old_path = explode( '?', $old_path )[0]; // Remove ?ver..
}
if ( file_exists( $new_path ) ) {
return $new_url;
}
if ( ! file_exists( $cache_type_dir ) ) {
mkdir( $cache_type_dir, 0777, true );
}
$path = plugin_dir_path( awpp_get_instance()->file ) . 'Classes/Libs';
require_once $path . '/minify/autoload.php';
require_once $path . '/path-converter/autoload.php';
if ( 'js' == $type ) {
$minifier = new \MatthiasMullie\Minify\JS( $old_path );
} else {
$minifier = new \MatthiasMullie\Minify\CSS( $old_path );
}
$minifier->minify( $new_path );
return $new_url;
}
/**
* Helpers
*/
public function format_bytes( $bytes, $precision = 2 ) {
$units = [ 'B', 'KB', 'MB', 'GB', 'TB' ];
$bytes = max( $bytes, 0 );
$pow = floor( ( $bytes ? log( $bytes ) : 0 ) / log( 1024 ) );
$pow = min( $pow, count( $units ) - 1 );
// Uncomment one of the following alternatives
// $bytes /= pow(1024, $pow);
$bytes /= ( 1 << ( 10 * $pow ) );
return round( $bytes, $precision ) . ' ' . $units[ $pow ];
}
public function rrmdir( $path ) {
if ( ! is_dir( $path ) ) {
return false;
}
$objects = scandir( $path );
$count = 0;
foreach ( $objects as $object ) {
if ( '.' != $object && '..' != $object ) {
if ( filetype( $path . '/' . $object ) == 'dir' ) {
$count = $count + $this->rrmdir( $path . '/' . $object );
} else {
$count ++;
unlink( $path . '/' . $object );
}
}
}
return $count;
}
public function get_cache_dir() {
$cache_dir = apply_filters( 'awpp_cache_dir', $this->default_cache_path );
$cache_dir = trailingslashit( $cache_dir );
if ( strpos( $cache_dir, $this->base_url ) !== false ) {
$cache_dir = str_replace( $this->base_url, ABSPATH, $cache_dir );
}
if ( '' == $cache_dir || '/' == $cache_dir ) {
$cache_dir = $this->default_cache_path;
}
return $cache_dir;
}
}