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<?php
// Do not allow direct access!
if ( ! defined( 'ABSPATH' ) ) {
die();
}
/**
* Class Ionos_Assistant_Config
* Loads and parse the main configuration and handle the different settings
*/
class Ionos_Assistant_Config {
/**
* Placeholders available in keys
* (ex. contract market)
*/
const CONFIG_KEY_PLACEHOLDER_MARKET = 'market';
/**
* @var Ionos_Assistant_Config
*/
private static $instance;
/**
* @var string[]
*/
private static $paths;
/**
* @var array
*/
private $config = array();
/**
* Ionos_Assistant_Config constructor
*/
private function __construct() {
// Set up the paths for the cascading INI configurations
if ( empty( self::$paths ) ) {
self::set_paths();
}
// 1. INI configuration
self::retrieve_ini_params();
// 2. DB (WP options) configuration
self::retrieve_db_params();
// 3. Cookie configuration
self::retrieve_cookie_params();
}
/**
* Retrieve the Singleton object
*
* @return Ionos_Assistant_Config
*/
public static function get_instance() {
if ( ! isset( self::$instance ) ) {
self::$instance = new self;
}
return self::$instance;
}
/**
* Destructor (for testing purpose)
*/
public static function reset_instance() {
self::$instance = null;
}
/**
* Singleton wrapper function to retrieve a specific parameter without much code
* Call: Ionos_Assistant_Config::get()
*
* @param string $param
* @param string $section
* @param string $fallback_param
* @param string $fallback_wording
* @return string
*/
public static function get( $param, $section = null, $fallback_param = null, $fallback_wording = null ) {
return self::get_instance()->get_param( $param, $section, $fallback_param, $fallback_wording );
}
/**
* Singleton wrapper function to retrieve a section without much code
* Call: Ionos_Assistant_Config::section()
*
* @param string $section
* @return array
*/
public static function section( $section ) {
return self::get_instance()->get_section( $section );
}
/**
* Singleton wrapper function for feature
* Call: Ionos_Assistant_Config::get()
*
* @param string $param
* @param string $fallback_param
* @param string $fallback_wording
* @return boolean
*/
public static function feature( $param, $fallback_param = null, $fallback_wording = null ) {
return (bool) self::get_instance()->get_param( $param, 'features', $fallback_param, $fallback_wording );
}
/**
* Setup the config file(s) directory paths
*
* @param string[] $config_paths
*/
public static function set_paths( $config_paths = array() ) {
if ( ! empty( $config_paths ) ) {
self::$paths = (array) $config_paths;
} else {
self::$paths = array(
1 => Ionos_Assistant::get_plugin_dir_path() . 'config/main.ini',
2 => Ionos_Assistant::get_plugin_dir_path() . 'config/local.ini',
3 => '/etc/wordpress/config.ini',
);
}
}
/**
* Retrieve a specific parameter
*
* @param string $param
* @param string $section
* @param string $fallback_param
* @param string $fallback_wording
* @return string
*/
public function get_param( $param, $section = null, $fallback_param = null, $fallback_wording = null ) {
$key = $this->replace_placeholders( $param );
$fallback_key = $this->replace_placeholders( $fallback_param );
if ( get_option( 'ionos_assistant_' . $param ) !== false ) {
return get_option( 'ionos_assistant_' . $param );
}
if ( ! empty( $section ) && array_key_exists( $section, $this->config ) ) {
$config = $this->config[ $section ];
} else {
$config = $this->config;
}
if ( is_array( $config ) ) {
if ( array_key_exists( $key, $config ) ) {
return $config[ $key ];
} elseif ( $fallback_key && array_key_exists( $fallback_key, $config ) ) {
return $config[ $fallback_key ];
}
}
if ( ! is_null( $fallback_wording ) ) {
return $fallback_wording;
}
return null;
}
/**
* Retrieve a whole section from the configuration
*
* @param string $section
* @return array
*/
public function get_section( $section ) {
if ( ! empty( $section ) && array_key_exists( $section, $this->config ) && is_array( $this->config[ $section ] ) ) {
return $this->config[ $section ];
}
return array();
}
/**
* Parse config params for placeholders having dynamical values
* (ex. contract market, languages...)
*
* @param string $chain
* @return string
*/
private function replace_placeholders( $chain ) {
$placeholder_open_tag = '{';
$placeholder_close_tag = '}';
// Contract market (CA, DE, ES, FR, IT, MX, UK, US)
$market = Ionos_Assistant::get_market();
$chain = str_replace(
$placeholder_open_tag . self::CONFIG_KEY_PLACEHOLDER_MARKET . $placeholder_close_tag,
$market,
$chain
);
return $chain;
}
/**
* Parse the different configuration file(s),
* in the order that they have in the $paths array
*/
private function retrieve_ini_params() {
foreach ( self::$paths as $file_path ) {
if ( is_file( $file_path ) && is_readable( $file_path ) ) {
$this->config = array_replace_recursive(
$this->config,
parse_ini_file( $file_path, true )
);
}
}
}
/**
* Configuration can be overwritten by database entries
* Each database entry is a "WP option"
*/
private function retrieve_db_params() {
foreach ( $this->config as $section => $params ) {
foreach ( $params as $param => $value ) {
$wp_option_key = 'ionos_assistant_config.' . $section . '.' . $param;
$wp_option_value = get_option( $wp_option_key );
if ( false !== $wp_option_value ) {
// We make sure the option is passed as string just like in the INI files
$this->config[ $section ][ $param ] = (string) $wp_option_value;
}
}
}
}
/**
* Configuration can be overwritten by a cookie with single parameter change
* Each cookie name must be prefixed with "assistant-config-" to work
*/
private function retrieve_cookie_params() {
if ( array_key_exists( 'features', $this->config ) && is_array( $this->config['features'] ) ) {
foreach ( $this->config['features'] as $param => $value ) {
if ( isset( $_COOKIE[ 'ionos-assistant-config-' . $param ] ) ) {
$this->config['features'][ $param ] = filter_var( $_COOKIE[ 'ionos-assistant-config-' . $param ], FILTER_SANITIZE_STRING );
}
}
}
}
}