<?php

/*

  Belokan Micro Framework

  Licensed under GNU GPL

  http://gitorious.org/belokan

  ---

  Belokan/Log.php:

  Simple log system

*/

class Belokan_Log {

  private static

    $_instance;

  private

    $_stacks,

    $_logs;

  public static function getInstance ()

  {

    if (self::$_instance === null)

      self::$_instance = new self;

    return self::$_instance;

  }

  public function __construct ()

  {

    $this->_stacks = array();

    $this->_logs = array();

  }

  public function __destruct ()

  {

    if (Belokan_Config::getInstance()->get('log', 'autosave')) $this->write();

  }

  public function add ($log, $str)

  {

    if (!in_array($log, $this->_logs)) $this->_logs[] = $log;

    $this->_stacks[$log][] = '['.date('Y-m-d H:i').'] '.$str;

  }

  public function get ($log)

  {

    if (in_array($log, $this->_logs)) return $this->_stacks[$log];

    else return null;

  }

  public function write ()

  {

    if (count($this->_logs) == 0) return;

    foreach ($this->_logs as $log) {

      if (count($this->_stacks[$log]) == 0) continue;

      $tmp = '';

      foreach ($this->_stacks[$log] as $msg) $tmp .= $msg."\n";

      $logFile = fopen(Belokan_Config::getInstance()->get('dir', 'logs').$log.'.log', 'a');

      if ($logFile !== false) {

        fwrite($logFile, $tmp);

        fclose($logFile);

      }

    }

    $this->_stacks = array();

  }

}