Component.php

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<?php
 
namespace Rsi\Fred;
 
/**
 *  Basic component class.
 */
class Component extends \Rsi\Thing{
 
  public $filemtimeTtl = 0;
 
  protected $_fred = null;
  protected $_config = null;
  protected $_name = null;
 
  protected $_components = []; //!< Local components (key = component name, value = component).
  protected $_session = null;
 
  public function __construct($fred,$config = null){
    $this->_fred = $fred;
    $this->_config = $config;
    $this->publish('fred');
    $this->init();
  }
 
  public function __destruct(){
    $this->done();
  }
 
  protected function init(){
    $this->configure($this->_config);
  }
 
  protected function done(){
  }
  /**
   * Public configuration.
   * @return array  Public configuration for this component in key => value pairs.
   */
  public function clientConfig(){
    if($config = $this->config('client')) foreach($config as $key => &$value)
      if(is_string($value)) $value = $this->component('trans')->str($value);
    unset($value);
    return $config ?: [];
  }
  /**
   * Retrieve a config value.
   * @param string|array $key  Key to look at. An array indicates a nested key. If the array is ['foo' => ['bar' => 'acme']],
   *   then the nested key for the 'acme' value will be ['foo','bar'].
   * @param mixed $default  Default value if the key does not exist.
   * @return mixed  Found value, or default value if the key does not exist.
   */
  public function config($key,$default = null){
    return \Rsi\Record::get($this->_config,$key,$default);
  }
  /**
   * Ping function.
   */
  public function ping(){
  }
  /**
   * Filemtime with session cache.
   * @param string $filename  File to get modification time for.
   * @return int  Last modification time. False if file does not exists.
   */
  public function filemtime($filename){
    $key = str_replace($this->_fred->rootPath,'~',$filename);
    $check_time = time();
    if(
      ($file_time = \Rsi\Record::get($file_times = $this->session->fileTimes ?: [],$key)) &&
      ($file_time['check'] >= $check_time - $this->filemtimeTtl)
    ) return $file_time['time'];
    $this->session->fileTimes = [$key => ['time' => $time = \Rsi\File::mtime($filename),'check' => $check_time]] + $file_times;
    return $time;
  }
  /**
   * Get a component (local or default).
   * @param string $name  Name of the component.
   * @return Rsi\\Fred\\Component
   */
  public function component($name){
    if(array_key_exists($name,$this->_components)) return $this->_components[$name];
    return $this->_fred->may($name) ?: false;
  }
  /**
   * Get multiple components in an array.
   * @param string $names,...  Names of the components.
   * @return array  Key = component name, value = component.
   */
  public function components(...$names){
    $components = [];
    foreach($names as $name) $components[$name] = $this->component($name);
    return $components;
  }
 
  protected function getSession(){
    if(!$this->_session) $this->_session = new Component\Session(get_called_class());
    return $this->_session;
  }
 
}