<?php
$month=date('Y-m');
$month_sql='';
if(isset($_GET['month'])) {
	$month = htmlspecialchars($_GET['month']);
	$month_sql = " AND DATE_FORMAT(item_valid_from, '%Y-%m') = ".$this->db->quote($_GET['month']);
}

echo $this->html->form($URL, 'GET', array(
	array('month',$month,'text',false,'','YYYY-MM:'),
	array(false,'SELECT BY MONTH','submit')
));

if($month_sql == '') $month='';
$queries += array( //TODO: use build_query_select()!!!
	"Nakoupeno celkem $month"
		=> 'SELECT COUNT(item_id),SUM(item_price_in) FROM item WHERE item_valid_till=0'.$month_sql,
	"Použito celkem $month"
		=> 'SELECT COUNT(item_id),SUM(item_price_in) FROM item WHERE item_valid_till=0 AND status_id = 2'.$month_sql,
	"Prodáno celkem $month"
		=> 'SELECT COUNT(item_id),SUM(item_price_out),SUM(item_price_in),(SUM(item_price_out)-SUM(item_price_in)) as sale_profit FROM item WHERE item_valid_till=0 AND status_id = 3'.$month_sql,
	"Skladem celkem $month"
		=> 'SELECT COUNT(item_id),SUM(item_price_in) FROM item WHERE item_valid_till=0 AND status_id = 1'.$month_sql,
	"Bilance celkem =(prodej - všechny nákupy) $month"
		=> "SELECT (
				SUM(item_price_out)
				-(SELECT SUM(item_price_in) FROM item WHERE item_valid_till=0$month_sql)
			) FROM item WHERE item_valid_till=0 AND ( status_id = 3 )$month_sql",
);