<?php

///// DEPENDENCIES /////////////////////////////////////////////////////////////

include_once CS_ADMIN . 'modules/monitor/plugins/rest/MonitorRestservice.php';
include_once CS_ADMIN . 'modules/rest/api/plugins/CSRestservicePlugin.php';

///// CLASS DEFINITION /////////////////////////////////////////////////////////

/**
 * Observer plugin which checks if a HTTP content exists
 */
class HTTPContentObserver extends CSMonitorObserverPlugin {
///// PUBLIC METHODS /////////////////////////////////////////////////////////

  /**
   * This function is automatically called to start the observation
   *
   * @param int $ObserverID
   * @param object $Service
   * @return method
   */
  public function observe($ObserverID, $Service = NULL) {
    return $this->_processObservation();
  }

  /**
   * Adds additional editor fields to the Contentserv interface
   *
   * @param CSGuiEditor $editor
   * @param CSMonitorObserver $observer
   */
  public function prepareEditor(CSGuiEditor $editor, CSMonitorObserver $observer) {
    $this->_observer = $observer;
    $editor->addField("url", CS::translate('URL', 'csalive'), '', '', FALSE, array(
      'PaneTitle' => CS::translate('REST_GUI_EDIT_SETTINGS'),
    ));

    $editor->addField("timeOut", CS::translate('timeOut', 'csalive'), '', '', FALSE, array(
      'PaneTitle' => CS::translate('REST_GUI_EDIT_SETTINGS'),
      'noEmptyOption' => true
    ));

    $editor->addField("searchText", CS::translate('SEARCH_TEXT', 'csalive'), '', '', FALSE, array(
      'PaneTitle' => CS::translate('REST_GUI_EDIT_SETTINGS'),
      'noEmptyOption' => true
    ));

    $editor->addField("SelectedInDesignServer", CS::translate('CSALIVE_MONITOR_HTML_CONTENT', 'csalive'), $this->getServerNames(), 'HTML1', FALSE, array(
      'PaneTitle' => CS::translate('REST_GUI_EDIT_SETTINGS'),
      'noEmptyOption' => true
    ));

  }

///// PROTECTED METHODS //////////////////////////////////////////////////////

  /**
   * Checks wether a HTTP content exists and saves the corresponding value
   * 1: TRUE | 2: FALSE
   */
  protected function _processObservation() {
    $observation = CSMonitor::createObservation($this->_observer->getID(), 'HTML.' . $this->getSelectedInDesignServer());
    $observation->setTimestamp(CS::getDate());
    $observation->setUnit('Status');
    $state = CSMonitor::MONITOR_GUI_NOTIFICATION_NONE_ID;
    $observation->setState($state);
    $observation->setWarningValue(1);
    $observation->setCriticalValue(2);

    $intMeasuredValue = 2;
    if ($this->getContentStatus() === true) {
      $intMeasuredValue = 1;
    }

    $observation->setMeasuredValue($intMeasuredValue);
    $observation->store();
  }

///// PRIVATE METHODS //////////////////////////////////////////////////////

  /**
   * Gets Status if the value from searchText exist in value from URL Response
   *
   * @return boolean
   */
  private function getContentStatus() {
    $objCurl = curl_init();
    $arrCurlOpt = array(
      CURLOPT_URL            =>  $this->getURL(),
      CURLOPT_RETURNTRANSFER => true,
      CURLOPT_TIMEOUT        => $this->getTimeOut()
    );

    curl_setopt_array($objCurl, $arrCurlOpt);
    $strResult = curl_exec($objCurl);

    curl_close($objCurl);

    if (strstr($strResult, $this->getSearchText())) {
      return true;
    } else {
      return false;
    }
  }

  /**
   * Gets the entered value from the editor
   *
   * @return the entered Values
   */
  private function getURL() {
    $strURL = $this->_observer->getValue('url');
    return $strURL;
  }

  private function getTimeOut() {
    $intTimeOut = $this->_observer->getValue('timeOut');
    return $intTimeOut;
  }

  private function getSearchText() {
    $strSearchText = $this->_observer->getValue('searchText');
    return $strSearchText;
  }

  /**
   * Gets the entered value from the editor
   *
   * @return String Share name
   */
  private function getSelectedInDesignServer() {
    $strServer = $this->_observer->getValue('SelectedInDesignServer');
    return $strServer;
  }

  /**
   * Creates an array of 10 share names to choose from.
   * So that they don't overwrite each other accidentally
   *
   * @return array List of all selectable shares
   */
  private function getServerNames() {
    $arrSelectableServers = array();

    for ($intI = 1; $intI <= 10; $intI++) {
      $arrSelectableServers['HTML' . $intI] = 'HTML' . $intI;
    }
    return $arrSelectableServers;
  }

}