<?php
class SiwappDateRange
{
  protected $from;
  protected $to;
  protected $corrected;
  
  function __construct($from, $to)
  {
    $this->corrected = false;
    
    $from = sfDate::getInstance($from);
    $to   = sfDate::getInstance($to);
    
    if (!($to->get()))
    {
      $to->set(time());
    }
    
    if (!$from->get())
    {
      $from->set($to->get())->subtractYear(1);
    }
    
    if ($from->cmp($to) > 0)
    {
      $tmp = $from;
      $from = $to;
      $to = $tmp;
      
      $this->corrected = true;
    }
    
    $this->from = $from->setHour(0)->setMinute(0)->setSecond(0);
    $this->to   = $to->setHour(23)->setMinute(59)->setSecond(59);
  }
  
  public static function fromArray($date)
  {
    $from = $to = null;
    
    if ($date)
    {
      if (isset($date['from']))
      {
        if (is_array($date['from']))
        {
          $from = $date['from']['year'].'/'.$date['from']['month'].'/'.$date['from']['day'];
        }
        else
        {
          $from = $date['from'];
        }
      }

      if (isset($date['to']))
      {
        if (is_array($date['to']))
        {
          $to = $date['to']['year'].'/'.$date['to']['month'].'/'.$date['to']['day'];
        }
        else
        {
          $to = $date['to'];
        }
      }
    }
    else
    {
      $to   = sfDate::getInstance(time())->setHour(23)->setMinute(59)->setSecond(59);
      $from = sfDate::getInstance($to)->subtractYear(1)->setHour(0)->setMinute(0)->setSecond(0);
    }
    
    return new SiwappDateRange($from, $to);
  }
  
  public function isCorrected()
  {
    return $this->corrected;
  }
  
  public function getFrom()
  {
    return $this->from;
  }
  
  public function getTo()
  {
    return $this->to;
  }
  
  public function toArray()
  {
    return array(
      'from' => array(
        'year'  => date('Y', $this->getFrom()->get()),
        'month' => date('m', $this->getFrom()->get()),
        'day'   => date('d', $this->getFrom()->get())
      ),
      'to' => array(
        'year'  => date('Y', $this->getTo()->get()),
        'month' => date('m', $this->getTo()->get()),
        'day'   => date('d', $this->getTo()->get())
      )
    );
  }
}