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<?php
/**
* Class Ionos_Assistant_Cache_Manager
* Handles the creation and reading of the Assistant cache
*/
class Ionos_Assistant_Cache_Manager {
/**
* @var string
*/
private $cache_path = '';
/**
* Ionos_Assistant_Cache_Manager constructor.
*
* @param string $cache_path
*/
function __construct( $cache_path = null ) {
if ( $cache_path ) {
$this->cache_path = $cache_path;
} else {
$this->cache_path = Ionos_Assistant::get_plugin_dir_path() . '/cache/';
}
}
/**
* Loads the cache for all themes and plugins
* (or the themes and plugins of a given site type)
*
* @param Ionos_Assistant_Sitetype_Filter $site_type_filter
*/
public function fill_cache( $site_type_filter ) {
$site_types = $site_type_filter->get_sitetypes( false );
foreach ( $site_types as $name ) {
$this->fill_theme_cache( $name, $site_type_filter->get_theme_slugs( $name ) );
$this->fill_plugin_cache( $name, $site_type_filter->get_plugins( $name ) );
}
}
/**
* Loads the plugins/themes cache for a given site type
*
* @param string $type
* @param string $site_type
* @return string
*/
public function load_cache( $type, $site_type ) {
return $this->load_cache_file( $type, $site_type );
}
/**
* Checks if plugins/themes cache exists for a given site type
*
* @param string $type
* @param string $site_type
*
* @return boolean
*/
public function has_cache( $type, $site_type ) {
return ( is_file ( $this->get_cache_file_path( $type, $site_type ) ) );
}
/**
* Generates a serialized cache file for themes
*
* @param string $site_type
* @param array $theme_slugs
*/
public function fill_theme_cache( $site_type, $theme_slugs ) {
$content = array();
foreach ( $theme_slugs as $theme_slug ) {
$theme_data = $this->get_data_from_api( 'theme', $theme_slug );
// skip theme if no data is available
if ( ! $theme_data ) {
continue;
}
$theme_data['id'] = $theme_slug;
$theme_data['description'] = $theme_data['sections']['description'];
$content[ $theme_slug ] = $theme_data;
}
$this->save_cache_file( 'theme', $site_type, $content );
}
/**
* Generates a serialized cache file for plugins
*
* @param string $site_type
* @param array $plugins
*/
public function fill_plugin_cache( $site_type, $plugins ) {
$content = array();
foreach ( $plugins as $plugin_slug => $plugin_config ) {
$plugin_data = $this->get_data_from_api( 'plugin', $plugin_slug );
// skip plugin if no data is available
if ( ! $plugin_data ) {
continue;
}
$content[ $plugin_slug ] = array_merge( $plugin_data, $plugin_config );
}
$this->save_cache_file( 'plugin', $site_type, $content );
}
/**
* Loads plugin or theme data to be cached, using the WordPress API
*
* @param String $type Possible types: theme|plugin
* @param String $slug The slug from theme or plugin that should be load
*
* @return array Data from api to the given slug
*/
public function get_data_from_api( $type, $slug ) {
try {
$url = $this->get_api_url( $type, $slug );
$net_client = curl_init( $url );
// body is returned as value instead of error code
curl_setopt( $net_client, CURLOPT_RETURNTRANSFER, true );
$data = curl_exec( $net_client );
curl_close( $net_client );
} catch ( Exception $e ) {
return array();
}
// Data can be empty if the plugin isn't available on WP.org, for example German Market
if ( empty( $data ) || ( $data === 'null' ) || ( $data === 'false' ) ) {
return array();
} else {
return json_decode( $data, true );
}
}
/**
* Builds and returns WordPress API URL for the needed plugin or theme
*
* @param string $type
* @param string $slug
*
* @return string
* @throws Exception When no valid type is given
*/
public function get_api_url( $type, $slug ) {
switch ( $type ) {
case 'theme':
$url = 'https://api.wordpress.org/themes/info/1.1/?action=theme_information&request[slug]=' . $slug;
break;
case 'plugin':
$url = 'https://api.wordpress.org/plugins/info/1.1/?' .
http_build_query( array(
'action' => 'plugin_information',
'request' => array(
'slug' => $slug,
'fields' => array(
'short_description' => true,
'icons' => true
)
)
) );
break;
default:
throw new Exception( 'No valid type was given. Type given was: ' . $type );
break;
}
return $url;
}
/**
* Generates the cache file
*
* @param string $type
* @param string $site_type
* @param array $content
*
* @return bool|int
*/
public function save_cache_file( $type, $site_type, $content ) {
return file_put_contents(
$this->get_cache_file_path( $type, $site_type ),
serialize( $content )
);
}
/**
* Opens the cache file
*
* @param string $type
* @param string $site_type
*
* @return bool|string
*/
public function load_cache_file( $type, $site_type ) {
$filepath = $this->get_cache_file_path( $type, $site_type );
if ( is_file( $filepath ) ) {
return unserialize(
file_get_contents( $filepath )
);
}
return false;
}
/**
* Builds the plugins or themes cache filename for a given site type
*
* @param string $type
* @param string $site_type
*
* @return string
*/
public function get_cache_file_path( $type, $site_type ) {
return $this->cache_path . $type . '-' . $site_type . '-meta.txt';
}
}