<?php

$func = include('includes/auth.php');

		$k = Index::get($_REQUEST['model'] . '.PRIMARY')->getData();
		$mm = Model::get($_REQUEST['model']);
		$model = $mm->getName();
		$key = $k['fields'][1];
		$p = $mm->getParent();
		
		
		$clause = ' ';
		if ( !empty($_REQUEST['match']) )
			foreach ( $_REQUEST['match'] as $k => $v )
				$clause .= sprintf(' AND `%1$s` = "%2$s" ', $k, $v);
		
		
		// reorder
		if ( !$p->queryValue(sprintf('SELECT ( COUNT(DISTINCT position) = COUNT(*) ) AND ( MIN(position) = 0 ) FROM %1$s WHERE 1 %2$s', $model, $clause)) ) {
			$lst = $p->queryList(sprintf('SELECT id FROM %1$s WHERE 1 %2$s ORDER BY position', $model, $clause));
			//~ while ( !$lst[0]['position'] )
				//~ array_push($lst, array_shift($lst));
			foreach ( $lst as $poss => $item )
				$p->query(sprintf('UPDATE %1$s SET position = %4$s WHERE id = %3$s %2$s ORDER BY position', $model, $clause, $item['id'], $poss));
		}
		
		$result = $p->query(sprintf(
			'SELECT * FROM %1$s WHERE %3$s = %2$u LIMIT 1;',
			$model,
			$_REQUEST['id'],
			$key
		));
		
		$pos = $result[0][0]['position'];
		
		if ( $pos < $_REQUEST['position'] )
			$presql = 'UPDATE %4$s SET position = position - 1 WHERE %2$s < position AND position < %3$u + 1 ' . $clause;
		
		else $presql = 'UPDATE %4$s SET position = position + 1 WHERE %3$s - 1 < position AND position < %2$u ' . $clause;
		
		if ( $pos !== $_GET['position'] )
			$p->query(sprintf(
				$presql . ';' .
				'UPDATE %4$s SET position = %3$s WHERE %5$s = %1$s;',
				$_REQUEST['id'],
				$pos,
				$_REQUEST['position'],
				$model,
				$key
			));
		
?>