<?php
/**
 * class.serverConfiguration.php
 *
 * ProcessMaker Open Source Edition
 * Copyright (C) 2004 - 2008 Colosa Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * For more information, contact Colosa Inc, 2566 Le Jeune Rd.,
 * Coral Gables, FL, 33134, USA, or email info@colosa.com.
 * /**
 * @package workflow.ProcessMaker
 */

/**
 * ServerConfiguration - serverConf class
 * @author Hugo Loza
 * @copyright 2010 COLOSA
 * @license GNU Affero General Public License
 */
class serverConf {
  private $_aProperties = array ();
  private $_aHeartbeatConfig = array ();
  private $_aWSapces = array ();
  private $aWSinfo = array ();
  private $pluginsA = array ();
  private $errors = array ();
  private static $instance = NULL;
  private $haveSetupData = false;
  private $beatType = 'starting';
  private $ip;
  private $index = 0;
  private $os;
  private $webserver;
  private $host;
  private $php;
  private $mysql;
  private $pmVersion;
  private $pmProduct = 'PMCE';
  private $nextBeatDate;
  var $logins;
  private $lanDirection;
  private $lanLanguage;
  

  private function __construct() {
    $this->filePath = PATH_DATA . 'srvConf.singleton';
  }

  /**
   * This function is instancing to this object
   * @param
   * @return object
   */
  function &getSingleton() {
    if (self::$instance == NULL) {
      self::$instance = new serverConf ( );
      if ((file_exists ( self::$instance->filePath ))&&(filesize(self::$instance->filePath)>0)){
        self::$instance->unSerializeInstance ( file_get_contents ( self::$instance->filePath ) );
      }
    }
    return self::$instance;
  }

  /**
   * This function generates a storable representation of this obejct
   * @param
   * @return void
   */
  function serializeInstance() {
    return serialize ( self::$instance );
  }

  /**
   * This function takes a single serialized object and converts it back a object
   * @param string $serialized
   * @return void
   */
  function unSerializeInstance($serialized) {
    if (self::$instance == NULL) {
      self::$instance = new serverConf ( );
    }

 	if($instance = @unserialize ( $serialized )){
    	self::$instance = $instance;
  	}
  }

  /**
   * This will save the object in the specified file (defined as a property of this class)
   * @param
   * @return void
   */

  function saveSingleton() {
    $this->filePath = PATH_DATA . 'srvConf.singleton';
    $size = file_put_contents ( $this->filePath, $this->serializeInstance () );
  }

  /**
   * With this is possible to save a property that will be saved in the properties
   * array of this class.
   * @param string $propertyName
   * @param string $propertyValue
   */
  function setProperty($propertyName, $propertyValue) {
    $this->_aProperties [$propertyName] = $propertyValue;
    $this->saveSingleton ();
  }

  /**
   * To unset a defined property. If it doesn't exist then it does nothing.
   * @param string $propertyName
   * @return void
   */
  function unsetProperty($propertyName) {
    if (isset ( $this->_aProperties [$propertyName] )) {
      unset ( $this->_aProperties [$propertyName] );
      $this->saveSingleton ();
    }
  }

  /**
   * Returns the value of a defined property. If it doesn't exist then returns null
   * @param string $propertyName
   * @return string/null
   */
  function getProperty($propertyName) {
    if (isset ( $this->_aProperties [$propertyName] )) {
      return $this->_aProperties [$propertyName];
    } 
    else {
      return null;
    }
  }

  /**
   * Used to have a record of succesful logins to the system (total and by WS)
   * @param
   * @return void
   */
  function sucessfulLogin() {
    $this->logins ++;
    if ( isset ($this->workspaces[SYS_SYS]) && isset ($this->workspaces[SYS_SYS]['WSP_LOGINS']) )
      $this->workspaces[SYS_SYS]['WSP_LOGINS'] ++;

    if ( isset ($this->workspaces[SYS_SYS]) && !isset ($this->workspaces[SYS_SYS]['WSP_LOGINS']) )
      $this->workspaces[SYS_SYS]['WSP_LOGINS'] = 1;
    
    $this->saveSingleton ();
  }

  function setWsInfo($wsname,$info){
    $this->aWSinfo[$wsname]=$info;
  }

  /**
   * This will togle the status of a workspace (enabled,disabled)
   * @param string $wsName
   * @return void
   */
  function changeStatusWS($wsName) {

    if (isset ( $this->_aWSapces [$wsName] )) { //Enable WS
      unset ( $this->_aWSapces [$wsName] );
    } 
    else {
      $this->_aWSapces [$wsName] = 'disabled';
    }
    $this->saveSingleton ();
  }

  /**
   * Return the status of a WS. If is disabled will return 1 otherwise 0
   * @param $wsname
   * @return boolean
   */
  function isWSDisabled($wsName) {
    return isset ( $this->_aWSapces [$wsName] );
  }

  /**
   * Check only if the server address or server name has changed,
   * to send another beat in next minute.
   * @param
   * @return boolean
   */
  function checkIfHostNameHasChanged() {
    //removed the PM_VERSION control, because when an upgrade is done, the haveSetupData has to be changed.
    if ($this->ip != getenv ( 'SERVER_ADDR' ))
      return false;

    if ($this->host != getenv ( 'SERVER_NAME' ))
      return false;

    return $this->haveSetupData;
  }


  /**
   * Will return a list of all WS in this system and their related information.
   * @uses getWorkspaceInfo
   * @param
   * @return array
   */
  function getWSList() {
    $dir = PATH_DB;
    $wsArray = array ();
    if (file_exists ( $dir )) {
      if ($handle = opendir ( $dir )) {
        while ( false !== ($file = readdir ( $handle )) ) {
          if (($file != ".") && ($file != "..")) {
            if (file_exists ( PATH_DB . $file . '/db.php' )) { //print $file."/db.php <hr>";
              $statusl = ($this->isWSDisabled ( $file )) ? 'DISABLED' : 'ENABLED';
              //$wsInfo = $this->getWorkspaceInfo ( $file );
              if(isset($this->aWSinfo[$file])){
                $wsInfo = $this->aWSinfo[$file];
              }else{
                $wsInfo ['num_processes'] = "not gathered yet";
                $wsInfo ['num_cases'] = "not gathered yet";;
                $wsInfo ['num_users'] = "not gathered yet";
              }
              $wsArray [$file] = array ('WSP_ID' => $file, 'WSP_NAME' => $file, 'WSP_STATUS' => $statusl, 'WSP_PROCESS_COUNT' => $wsInfo ['num_processes'], 'WSP_CASES_COUNT' => $wsInfo ['num_cases'], 'WSP_USERS_COUNT' => isset($wsInfo ['num_users'])?$wsInfo ['num_users']:"" );
              if (isset ( $this->workspaces [$file] ['WSP_LOGINS'] ))
                $wsArray [$file] ['WSP_LOGINS'] = $this->workspaces [$file] ['WSP_LOGINS'];

            }
          }
        }
        closedir ( $handle );
      }
    }
    return $wsArray;

  }
  /**
   * Will return all the information of a WS.
   * - Status
   * - # of cases
   * - # of processes
   * - # of users
   * @param string $wsName
   * @return array
   */
  function getWorkspaceInfo($wsName) {
    $aResult = Array ('num_processes' => '0', 'num_cases' => '0' );
    $result = array();
    require_once 'classes/model/Process.php';
    require_once 'classes/model/Application.php';
    require_once 'classes/model/Users.php';

    $Criteria  = new Criteria('workflow');
    $Criteria->add (ProcessPeer::PRO_STATUS, 'ACTIVE' , CRITERIA::EQUAL );
    $aResult['num_processes'] = ProcessPeer::doCount($Criteria);

    $Criteria  = new Criteria('workflow');
    $Criteria->add (ApplicationPeer::APP_STATUS, 'COMPLETED' , CRITERIA::NOT_EQUAL );
    $aResult['num_cases'] = ApplicationPeer::doCount($Criteria);

    $Criteria  = new Criteria('workflow');
    $Criteria->add (UsersPeer::USR_STATUS, array('DELETED','DISABLED') , CRITERIA::NOT_IN  );
    $aResult['num_users'] = UsersPeer::doCount($Criteria);
    return $aResult;
  }

  /**
   * Will list the plugins of the system
   * @param
   * @retun array
   */
  function getPluginsList() {
    return $this->pluginsA;
  }

  /***
   * Register a PLugin
   */
  function addPlugin($workspace,$info){
    $this->pluginsA[$workspace]=$info;
  }

  function getDBVersion(){
    $sMySQLVersion = '?????';
    if (defined ( "DB_HOST" )) {
      G::LoadClass ( 'net' );
      G::LoadClass ( 'dbConnections' );
      $dbNetView = new NET ( DB_HOST );
      $dbNetView->loginDbServer ( DB_USER, DB_PASS );

      $dbConns = new dbConnections ( '' );
      $availdb = '';
      foreach ( $dbConns->getDbServicesAvailables () as $key => $val ) {
        if ($availdb != '')
          $availdb .= ', ';
        $availdb .= $val ['name'];
      }

      try {
        $sMySQLVersion = $dbNetView->getDbServerVersion ( 'mysql' );
      }
      catch ( Exception $oException ) {
        $sMySQLVersion = '?????';
      }
    }
    return $sMySQLVersion;
  }

    /**
   * Will reset all the logins' count
   * @param
   * @return void
   */
  function resetLogins() {
    $this->logins = 0;
    if(is_array($this->workspaces)){
    foreach ( $this->workspaces as $wsName => $wsinfo ) {
      $this->workspaces [$wsName] ['WSP_LOGINS'] = 0;
    }
  }
  }
  

  /**
   * Get the value of language direction property
   * @param void
   * @return string
   */
  function getLanDirection() {
  	if (!isset($this->lanDirection) ) {
  		$this->lanDirection = 'L';
  	}
    if( defined('SYS_LANG') ) {
    	//if we already have the landirection for this language, just return from serverConf
    	if ( $this->lanLanguage == SYS_LANG ) 
    	  return $this->lanDirection;
    	
    	//if not , we need to query Database, in order to get the direction
    	$this->lanDirection = 'L';  //default value;
    	$this->lanLanguage = SYS_LANG;
      require_once 'classes/model/Language.php';
      $oLang = new Language();
      try{
        $aLang = $oLang->load(SYS_LANG);
        if( isset($aLang['LAN_DIRECTION']) ){
           $this->lanDirection = strtoupper($aLang['LAN_DIRECTION']);
        }
        $this->saveSingleton();
      } 
      catch(Exception $e){
        $this->lanDirection = 'L';
      }
    }
   return $this->lanDirection;
  }
/**
   * With this is possible to save a property that will be saved in the properties
   * array of this class.
   * @param string $propertyName
   * @param string $propertyValue
   * @param string $workspace
   */
  function setHeartbeatProperty($propertyName, $propertyValue, $workspace) {
    $this->_aHeartbeatConfig [$workspace][$propertyName] = $propertyValue;
    $this->saveSingleton ();
  }

  /**
   * To unset a defined property. If it doesn't exist then it does nothing.
   * @param string $propertyName
   * @param string $workspace
   * @return void
   */
  function unsetHeartbeatProperty($propertyName,$workspace) {
    if (isset ( $this->_aHeartbeatConfig [$workspace][$propertyName] ))
      unset ( $this->_aHeartbeatConfig [$workspace][$propertyName] );
    $this->saveSingleton ();
  }
  
  /**
   * Returns the value of a defined property. If it doesn't exist then returns null
   * @param string $propertyName
   * @return string/null
   */
  function getHeartbeatProperty($propertyName, $workspace) {
    if (isset ( $this->_aHeartbeatConfig [$workspace][$propertyName] )) {
      return $this->_aHeartbeatConfig [$workspace][$propertyName];
    } else {
      return null;
    }
  }


}