cron.php

<?php
/*
PHPLoU-bot - an LordOfUltima bot writen in PHP
Copyright (C) 2012 Roland Braband / rbraband

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

*/
class Cron implements SplSubject {
  public $note;
  
  private $lastExec;

  protected $observers= array ();
  
  const TICK0    = 'cron.tick_0';
  const TICK1   = 'cron.tick_1';
  const TICK5   = 'cron.tick_5';
  const TICK10   = 'cron.tick_10';
  const TICK15   = 'cron.tick_15';
  const TICK20   = 'cron.tick_20';
  const TICK30   = 'cron.tick_30';
  const HOURLY   = 'cron.hourly';
  const DAILY   = 'cron.daily';
  const WEEKLY   = 'cron.weekly';
  const MONTHLY = 'cron.monthly';
  const YEARLY   = 'cron.yearly';
  
  private $crons = array(
    array('cron.hourly',  'is',   1),
    array('cron.daily',   'Gis',  1),
    array('cron.weekly',  'wGis', 1),
    array('cron.monthly', 'jGis', 100001),
    array('cron.yearly',   'zGis', 1)
  );
  
  private $ticks = array(
    array('cron.tick_0',  's',   10),
    array('cron.tick_1',   'is',      100),
    array('cron.tick_5',   'is',      500),
    array('cron.tick_10', 'is',      1000),
    array('cron.tick_15', 'is',      1500),
    array('cron.tick_20', 'is',      2000),
    array('cron.tick_30', 'is',      3000),
  );

  static function factory() {
        
      // New Cron Object
      $cron = new Cron;
      
      // Return the object
      return $cron;
  }

  public function check() {
    $return = false;//sollte alle events zurückgeben!
    $this->lastExec = time();
    foreach($this->crons as $cron) {
      if (abs(date($cron[1], $this->lastExec) +1) == $cron[2]) {
        $this->kick(CRON, $cron[0]);
        $return = true;
      }
    }
    foreach($this->ticks as $tick) {
      if (!(abs(date($tick[1], $this->lastExec)) % $tick[2])) {
        $this->kick(TICK, $tick[0]);
        $return = true;
      }
    }
    return $return;
  }

  private function kick($type, $event) {
    $this->note = array('type' => $type,
                        'name' => $event,
                        'time' => $this->lastExec
                        );
    $this->notify();
  }

  public function attach(SplObserver $observer) {
    $this->observers[spl_object_hash($observer)] = $observer;
  }
  
  public function detach(SplObserver $observer) {
    unset($this->observers[spl_object_hash($observer)]);
  }
  
  public function notify() {
    foreach ($this->observers as $obj) {
      $obj->update($this);
    }
  }

}
?>