/**
* Поменять позиции местами
*
* @param int $parentId
* @param int $nodeId1
* @param int $nodeId2
* @throws DatabaseException
* @throws GraphException
*/
public function swapPositions($parentId, $nodeId1, $nodeId2)
{
$directChilds = $this->edgesGateway->findDirectChildren($parentId);
if (empty($directChilds)) {
throw new GraphException('Child nodes not found.');
}
$childNodeIds = ArrayHelper::getColumn($directChilds, 'end');
if (!in_array($nodeId1, $childNodeIds) || !in_array($nodeId2, $childNodeIds)) {
throw new GraphException('Specified node is not a child.');
}
$sourcePosition = ArrayHelper::first(ArrayHelper::find($directChilds, ['end' => $nodeId1]));
$targetPosition = ArrayHelper::first(ArrayHelper::find($directChilds, ['end' => $nodeId2]));
$tmpPos = $sourcePosition['pos'];
$sourcePosition['pos'] = $targetPosition['pos'];
$targetPosition['pos'] = $tmpPos;
$this->edgesGateway->updatePositions([$sourcePosition, $targetPosition]);
}
