<?
// +-------------------------------------------------------
// |            Nucleus Internet Time Plug-in
// +-------------------------------------------------------
// |
// +-INFO--------------------------------------------------
// |  Author:   Jeroen Budts (TeRanEX)
// |  URL:      http://budts.be/weblog/
// |  JabberID: teranex@jabber.org
// |
// +-TODO--------------------------------------------------
// |
// +-HISTORY-----------------------------------------------
// |  2004-04-19: - (v0.1)   Initial Release
// |  2004-04-22: - (v0.1.1) added 'supportsfeature tableprefix'
// |
// +-CVS---------------------------------------------------
// | $Id: NP_InternetTime.php,v 1.3 2004/04/22 20:29:08 Jeroen Budts Exp $
// |
// +-------------------------------------------------------

class NP_InternetTime extends NucleusPlugin {

// --------- Plug-in Info ---------------------------------
  // name of plugin
  function getName() {
	return 'Internet Time';
  }

  // author of plugin
  function getAuthor() {
	return 'TeRanEX';
  }
  // an URL to the plugin website
  function getURL() {
	return 'http://budts.be/weblog/';
  }

  // version of the plugin
  function getVersion() {
	return '0.1';
  }

  // a description to be shown on the installed plugins listing
  function getDescription() {
	return 'A plug-in to display the time of an item and/or comment in Internet Beats';
  }

  function supportsFeature($what) {
	switch($what) {
	  case 'SqlTablePrefix':
		return 1;
	  default:
		return 0;
	}
  }

// --------- Install and Uninstall functions --------------
  function install() {
	$this->createOption('ShowCentiBeats', 'Show CentiBeats (more precision)?', 'yesno', 'yes');
  }

// --------- Various Functions ----------------------------
  // code to calculate UTC offset based on
  // http://be2.php.net/manual/nl/function.localtime.php#27516
  function getUTCOffset($timeOffset) {
	$Offset = date("O", time());
	$Parity = $Offset < 0 ? -1 : 1;
	$Offset = $Parity * $Offset;
	$Offset = ($Offset - ($Offset % 100))/100*60 + $Offset % 100;
	return (($Parity * $Offset)/60)+$timeOffset;
  }

  function getBMTHour($iHour, $timeOffset) {
	//BMT is UTC+0100 (getUTCOffset+1)
	$tmp = $iHour-floor($this->getUTCOffset($timeOffset))+1;
	if ($tmp < 0)
	  $tmp = 24+$tmp;
	if ($tmp == 24)
	  $tmp = 0;
	return $tmp;
  }

  function getBMTMinutes($iMin, $timeOffset) {
	$offset = $this->getUTCOffset($timeOffset);
	$offset = $offset - floor($offset);
	return $iMin + round($offset*60);
  }

  function addLeadingZeroes($swatchTime) {
	if (strlen($swatchTime) == 2)
	  $swatchTime = '0'.$swatchTime;
	elseif (strlen($swatchTime) == 1)
	  $swatchBeat = '00'.$swatchTime;
	return $swatchTime;
  }

  function getInternetTime($iTime, $timeOffset) {
	$iTime_arr = localtime($iTime);
	$swatchBeat = (($this->getBMTHour($iTime_arr[2], $timeOffset)*60*60)+($this->getBMTMinutes($iTime_arr[1], $timeOffset)*60)+$iTime_arr[0])/86.4;
	if ($this->getOption('ShowCentiBeats') == 'yes') {
	  $swatchBeat = round($swatchBeat, 2);
	  $intPart = floor($swatchBeat);
	  $fracPart = round(($swatchBeat - $intPart) * 100);
	  $intPart = $this->addLeadingZeroes($intPart);
	  if ($fracPart < 10)
		$fracPart = '0'.$fracPart;
	  $swatchBeat = $intPart.'.'.$fracPart;
	}
	else {
	  $swatchBeat = round($swatchBeat);
	  $swatchBeat = $this->addLeadingZeroes($swatchBeat);
	}
	return $swatchBeat;
  }

// --------- do...-Functions ------------------------------
  function doSkinVar($skinType) {
	global $blog;
	echo '@'.$this->getInternetTime(time(), $blog->getTimeOffset);
  }

  function doTemplateVar(&$item) {
	global $blog;
	echo '@'.$this->getInternetTime($item->timestamp, $blog->getTimeOffset);
  }

  function doTemplateCommentsVar(&$item, &$comment) {
	global $blog;
	echo '@'.$this->getInternetTime($comment['timestamp'], $blog->getTimeOffset);
  }
}
?>