<?php

/**

 * Frontend for statistics data. Handles fetching and calculating data from raw statistics stored in stats-data.php.

 * @package EnanoBot

 * @subpackage stats

 * @author Dan Fuhry <dan@enanocms.org>

 */

if ( !isset($GLOBALS['stats_data']) )

{

  require(dirname(__FILE__) . '/stats-data.php');

  $data =& $stats_data;

}

define('NOW', time());

/**

 * Gets the number of messages posted in IRC in the last X minutes.

 * @param string Channel

 * @param int Optional - time period for message count. Defaults to 10 minutes.

 * @param int Optional - Base time, defaults to right now

 * @return int

 */

function stats_message_count($channel, $mins = 10, $base = NOW)

{

  global $data;

  $time_min = $base - ( $mins * 60 );

  $time_max = $base;

  if ( !isset($data['messages'][$channel]) )

  {

    return 0;

  }

  $count = 0;

  foreach ( $data['messages'][$channel] as $message )

  {

    if ( $message['time'] >= $time_min && $message['time'] <= $time_max )

    {

      $count++;

    }

  }

  return $count;

}

/**

 * Gets the percentages as to who's posted the most messages in the last X minutes.

 * @param string Channel name

 * @param int Optional - How many minutes, defaults to 10

 * @param int Optional - Base time, defaults to right now

 * @return array Associative, with floats.

 */

function stats_activity_percent($channel, $mins = 10, $base = NOW)

{

  global $data;

  if ( !($total = stats_message_count($channel, $mins, $base)) )

  {

    return array();

  }

  $results = array();

  $usercounts = array();

  $time_min = $base - ( $mins * 60 );

  $time_max = $base;

  foreach ( $data['messages'][$channel] as $message )

  {

    if ( $message['time'] >= $time_min && $message['time'] <= $time_max )

    {

      if ( !isset($usercounts[$message['nick']]) )

        $usercounts[$message['nick']] = 0;

      $usercounts[$message['nick']]++;

    }

  }

  foreach ( $usercounts as $nick => $count )

  {

    $results[$nick] = $count / $total;

  }

  arsort($results);

  return $results;

}