Base::getBestSellersFilter

protected function getBestSellersFilter()
{
	$filter = array();

	if (!empty($this->arParams['FILTER']))
	{
		$filter = array('=LID' => $this->getSiteId());
		$subFilter = array('LOGIC' => 'OR');

		$statuses = array(
			'CANCELED' => true,
			'ALLOW_DELIVERY' => true,
			'PAYED' => true,
			'DEDUCTED' => true
		);

		if ($this->arParams['PERIOD'] > 0)
		{
			$date = ConvertTimeStamp(AddToTimeStamp(array('DD' => '-'.$this->arParams['PERIOD'])));
			if (!empty($date))
			{
				foreach ($this->arParams['FILTER'] as $field)
				{
					if (isset($statuses[$field]))
					{
						$subFilter[] = array(
							'>=DATE_'.$field => $date,
							'='.$field => 'Y'
						);
					}
					else
					{
						if (empty($this->storage['ORDER_STATUS']) || in_array($field, $this->storage['ORDER_STATUS']))
						{
							$subFilter[] = array(
								'=STATUS_ID' => $field,
								'>=DATE_UPDATE' => $date,
							);
						}
					}
				}
				unset($field);
			}
		}
		else
		{
			foreach ($this->arParams['FILTER'] as $field)
			{
				if (isset($statuses[$field]))
				{
					$subFilter[] = array(
						'='.$field => 'Y'
					);
				}
				else
				{
					if (empty($this->storage['ORDER_STATUS']) || in_array($field, $this->storage['ORDER_STATUS']))
					{
						$subFilter[] = array(
							'=STATUS_ID' => $field,
						);
					}
				}
			}
			unset($field);
		}

		$filter[] = $subFilter;
	}

	return $filter;
}