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<?php
/**
* Astra Cache
*
* @package Astra
* @author Brainstorm Force
* @copyright Copyright (c) 2020, Brainstorm Force
* @link https://www.brainstormforce.com
* @since Astra 2.1.0
*/
/**
* Class Astra_Cache_Base.
*/
// @codingStandardsIgnoreStart
class Astra_Cache_Base { // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedClassFound
// @codingStandardsIgnoreEnd
/**
* Member Variable
*
* @var array instance
*/
private static $dynamic_css_files = array();
/**
* Asset slug for filename.
*
* @since 2.1.0
* @var string
*/
private $asset_slug = '';
/**
* Check if we are on a single or archive query page.
*
* @since 2.1.0
* @var string
*/
private $asset_query_var = '';
/**
* Asset Type - archive/post
*
* @since 2.1.0
* @var string
*/
private $asset_type = '';
/**
* Uploads directory.
*
* @since 2.1.0
* @var array
*/
private $uploads_dir = array();
/**
* Cache directory from uploads folder.
*
* @since 2.1.0
* @var String
*/
private $cache_dir;
/**
* Set priority for add_action call for action `wp_enqueue_scripts`
*
* @since 2.1.0
* @var string
*/
protected $asset_priority = '';
/**
* Constructor
*
* @since 2.1.0
* @param String $cache_dir Base cache directory in the uploads directory.
*/
public function __construct( $cache_dir ) {
if ( true === is_admin() ) {
return false;
}
$this->cache_dir = $cache_dir;
add_action( 'wp', array( $this, 'init_cache' ) );
add_action( 'wp_enqueue_scripts', array( $this, 'setup_cache' ), $this->asset_priority );
}
/**
* Setup class variables.
*
* @since 2.1.0
* @return void
*/
public function init_cache() {
$this->asset_type = $this->asset_type();
$this->asset_query_var = $this->asset_query_var();
$this->asset_slug = $this->asset_slug();
$this->uploads_dir = astra_addon_filesystem()->get_uploads_dir( $this->cache_dir );
// Create uploads directory.
astra_addon_filesystem()->maybe_create_uploads_dir( $this->uploads_dir['path'] );
}
/**
* Get Current query type. single|archive.
*
* @since 2.1.0
* @return String
*/
private function asset_query_var() {
if ( 'post' === $this->asset_type || 'home' === $this->asset_type || 'frontpage' === $this->asset_type ) {
$slug = 'single';
} else {
$slug = 'archive';
}
return apply_filters( 'astra_addon_cache_asset_query_var', $slug );
}
/**
* Get current asset slug.
*
* @since 2.1.0
* @return String
*/
private function asset_slug() {
if ( 'home' === $this->asset_type || 'frontpage' === $this->asset_type ) {
return $this->asset_type;
} else {
return $this->asset_type . $this->cache_key_suffix();
}
}
/**
* Append queried object ID to cache if it is not `0`
*
* @since 2.1.0
* @return Mixed queried object id if that is not 0; else false.
*/
private function cache_key_suffix() {
return get_queried_object_id() !== 0 ? '-' . get_queried_object_id() : false;
}
/**
* Get the archive title.
*
* @since 2.1.0
* @return $title Returns the archive title.
*/
private function asset_type() {
$title = 'post';
if ( is_category() ) {
$title = 'category';
} elseif ( is_tag() ) {
$title = 'tag';
} elseif ( is_author() ) {
$title = 'author';
} elseif ( is_year() ) {
$title = 'year-' . get_query_var( 'year' );
} elseif ( is_month() ) {
$title = 'month-' . get_query_var( 'monthnum' );
} elseif ( is_day() ) {
$title = 'day-' . get_query_var( 'day' );
} elseif ( is_tax( 'post_format' ) ) {
if ( is_tax( 'post_format', 'post-format-aside' ) ) {
$title = 'asides';
} elseif ( is_tax( 'post_format', 'post-format-gallery' ) ) {
$title = 'galleries';
} elseif ( is_tax( 'post_format', 'post-format-image' ) ) {
$title = 'images';
} elseif ( is_tax( 'post_format', 'post-format-video' ) ) {
$title = 'videos';
} elseif ( is_tax( 'post_format', 'post-format-quote' ) ) {
$title = 'quotes';
} elseif ( is_tax( 'post_format', 'post-format-link' ) ) {
$title = 'links';
} elseif ( is_tax( 'post_format', 'post-format-status' ) ) {
$title = 'statuses';
} elseif ( is_tax( 'post_format', 'post-format-audio' ) ) {
$title = 'audio';
} elseif ( is_tax( 'post_format', 'post-format-chat' ) ) {
$title = 'chats';
}
} elseif ( is_post_type_archive() ) {
$title = 'archives';
} elseif ( is_tax() ) {
$tax = get_taxonomy( get_queried_object()->taxonomy );
$title = sanitize_key( $tax->name );
}
if ( is_search() ) {
$title = 'search';
}
if ( is_404() ) {
$title = '404';
}
if ( is_front_page() ) {
$title = 'post';
}
if ( is_home() ) {
$title = 'home';
}
return apply_filters( 'astra_addon_cache_asset_type', $title );
}
/**
* Create an array of all the files that needs to be merged in dynamic CSS file.
*
* @since 2.1.0
* @param array $file file path.
* @return void
*/
public static function add_css_file( $file ) {}
/**
* Append CSS style to the theme dynamic css.
*
* @since 2.1.0
* @param Array $dynamic_css_files Array of file paths to be to be added to minify cache.
* @return String CSS from the CSS files passed.
*/
public function get_css_from_files( $dynamic_css_files ) {
$dynamic_css_data = '';
foreach ( $dynamic_css_files as $key => $value ) {
// Get file contents.
$get_contents = astra_addon_filesystem()->get_contents( $value );
if ( $get_contents ) {
$dynamic_css_data .= $get_contents;
}
}
return $dynamic_css_data;
}
/**
* Refresh Assets, called through ajax
*
* @since 2.1.0
* @param String $cache_dir dirname of the cache.
* @return void
*/
public function ajax_refresh_assets( $cache_dir ) {
if ( ! current_user_can( 'edit_theme_options' ) ) {
wp_die();
}
check_ajax_referer( 'astra-addon-module-nonce', 'nonce' );
$this->init_cache();
astra_addon_filesystem()->reset_filesystem_access_status();
$this->delete_cache_files( $cache_dir );
}
/**
* Refresh Assets
*
* @since 2.1.0
* @param String $cache_dir dirname of the cache.
* @return void
*/
public function refresh_assets( $cache_dir ) {
if ( ! current_user_can( 'edit_theme_options' ) ) {
return;
}
$this->init_cache();
astra_addon_filesystem()->reset_filesystem_access_status();
$this->delete_cache_files( $cache_dir );
}
/**
* Deletes cache files
*
* @since 2.1.0
* @param String $cache_dir dirname of the cache.
* @return void
*/
private function delete_cache_files( $cache_dir ) {
$cache_dir = astra_addon_filesystem()->get_uploads_dir( $cache_dir );
$cache_files = astra_addon_filesystem()->get_filesystem()->dirlist( $cache_dir['path'], false, true );
if ( is_array( $cache_files ) ) {
foreach ( $cache_files as $file ) {
// don't delete index.php file.
if ( 'index.php' === $file['name'] ) {
continue;
}
// Delete only dynamic CSS files.
if ( false === strpos( $file['name'], 'dynamic-css' ) ) {
continue;
}
astra_addon_filesystem()->delete( trailingslashit( $cache_dir['path'] ) . $file['name'], true, 'f' );
}
}
}
/**
* Fetch theme CSS data to be added in the dynamic CSS file.
*
* @since 2.1.0
* @return void
*/
public function setup_cache() {}
/**
* Write dynamic asset files.
*
* @param String $style_data Dynamic CSS.
* @param String $type Asset type.
* @return void
*/
protected function write_assets( $style_data, $type ) {
$allow_file_generation = get_option( '_astra_file_generation', 'disable' );
if ( 'disable' === $allow_file_generation || is_customize_preview() ) {
return;
}
$assets_info = $this->get_asset_info( $type );
$post_timestamp = $this->get_post_timestamp( $assets_info );
// Check if we need to create a new file or override the current file.
if ( ! empty( $style_data ) && true === $post_timestamp['create_new_file'] ) {
$this->file_write( $style_data, $post_timestamp['timestamp'], $assets_info );
}
}
/**
* Get Dynamic CSS.
*
* @since 2.1.0
* @return void
*/
protected function get_dynamic_css() { }
/**
* Enqueue CSS files.
*
* @param string $type Gets the type theme/addon.
* @since 2.1.0
* @return void
*/
public function enqueue_styles( $type ) {
if ( self::inline_assets() ) {
wp_add_inline_style( 'astra-' . $type . '-css', $this->get_dynamic_css() );
} else {
$assets_info = $this->get_asset_info( $type );
$post_timestamp = $this->get_post_timestamp( $assets_info );
if ( isset( $this->uploads_dir['url'] ) ) {
wp_enqueue_style( 'astra-' . $type . '-dynamic', $this->uploads_dir['url'] . 'astra-' . $type . '-dynamic-css-' . $this->asset_slug . '.css', array( 'astra-' . $type . '-css' ), $post_timestamp['timestamp'] );
}
}
}
/**
* Enqueue the assets inline.
*
* @since 2.1.0
* @return boolean
*/
public static function inline_assets() {
$inline = false;
$allow_file_generation = get_option( '_astra_file_generation', 'disable' );
if ( ( defined( 'SCRIPT_DEBUG' ) && true === SCRIPT_DEBUG ) || ! astra_addon_filesystem()->can_access_filesystem()
|| 'disable' === $allow_file_generation || is_customize_preview() ) {
$inline = true;
}
return apply_filters( 'astra_addon_load_dynamic_css_inline', $inline );
}
/**
* Returns the current Post Meta/ Option Timestamp.
*
* @since 2.1.0
* @param string $assets_info Gets the assets path info.
* @return array $timestamp_data.
*/
public function get_post_timestamp( $assets_info ) {
// Check if current page is a post/ archive page. false states that the current page is a post.
if ( 'single' === $this->asset_query_var ) {
$post_timestamp = get_post_meta( get_the_ID(), 'astra_style_timestamp_css', true );
} else {
$post_timestamp = get_option( 'astra_get_dynamic_css' );
}
$timestamp_data = $this->maybe_get_new_timestamp( $post_timestamp, $assets_info );
return $timestamp_data;
}
/**
* Gets the current timestamp.
*
* @since 2.1.0
* @return string $timestamp Timestamp.
*/
private function get_current_timestamp() {
$date = new DateTime();
$timestamp = $date->getTimestamp();
return $timestamp;
}
/**
* Returns the current Post Meta/ Option Timestamp or creates a new timestamp.
*
* @since 2.1.0
* @param string $post_timestamp Timestamp of the post meta/ option.
* @param string $assets_info Gets the assets path info.
* @return array $data.
*/
public function maybe_get_new_timestamp( $post_timestamp, $assets_info ) {
// Creates a new timestamp if the file does not exists or the timestamp is empty.
// If post_timestamp is empty that means it is an new post or the post is updated and a new file needs to be created.
// If a file does not exists then we need to create a new file.
if ( '' == $post_timestamp || ! file_exists( $assets_info['path'] ) ) {
$timestamp = $this->get_current_timestamp();
$data = array(
'create_new_file' => true,
'timestamp' => $timestamp,
);
} else {
$timestamp = $post_timestamp;
$data = array(
'create_new_file' => false,
'timestamp' => $timestamp,
);
}
return $data;
}
/**
* Returns an array of paths for the CSS assets
* of the current post.
*
* @param string $type Gets the type theme/addon.
* @since 2.1.0
* @return array
*/
public function get_asset_info( $type ) {
$css_suffix = 'astra-' . $type . '-dynamic-css';
$css_suffix = 'astra-' . $type . '-dynamic-css';
$info = array();
if ( ! isset( $this->uploads_dir['path'] ) || ! isset( $this->uploads_dir['url'] ) ) {
return $info;
}
$info['path'] = $this->uploads_dir['path'] . $css_suffix . '-' . $this->asset_slug . '.css';
$info['css_url'] = $this->uploads_dir['url'] . $css_suffix . '-' . $this->asset_slug . '.css';
return $info;
}
/**
* Updates the Post Meta/ Option Timestamp.
*
* @param string $timestamp Gets the current timestamp.
* @since 2.1.0
* @return void
*/
public function update_timestamp( $timestamp ) {
// Check if current page is a post/ archive page. false states that the current page is a post.
if ( 'single' === $this->asset_query_var ) {
update_post_meta( get_the_ID(), 'astra_style_timestamp_css', $timestamp );
} else {
update_option( 'astra_get_dynamic_css', $timestamp );
}
}
/**
* Creates CSS files.
*
* @param string $style_data Gets the CSS for the current Page.
* @param string $timestamp Gets the current timestamp.
* @param string $assets_info Gets the assets path info.
* @since 2.1.0
* @return void
*/
public function file_write( $style_data, $timestamp, $assets_info ) {
astra_addon_filesystem()->put_contents( $assets_info['path'], $style_data );
$this->update_timestamp( $timestamp );
}
}