function deleteDiagramExe()
{
if (!is_numeric($_SESSION['userId'])) {
print "Wrong way";
exit;
}
if (!is_numeric($_REQUEST['diagramId'])) {
print "Wrong diagram id : " . $_REQUEST['diagramId'];
exit;
}
//TODO: usually ONLY the author can delete the diagram
$d = new Delegate();
$userdiagram = $d->userdiagramGetByIds($_SESSION['userId'], $_REQUEST['diagramId']);
if (is_object($userdiagram) && is_numeric($userdiagram->userId)) {
//delete diagramdata
$diagramDatas = $d->diagramdataGetByDiagramId($userdiagram->diagramId);
$storageFolder = getStorageFolder();
foreach ($diagramDatas as $diagramData) {
//TODO: we can make more tests here
unlink($storageFolder . '/' . $diagramData->fileName);
$d->diagramdataDeleteByDiagramIdAndType($diagramData->diagramId, $diagramData->type);
}
//delete all users linked to this diagram
$userdiagrams = $d->userdiagramGetByDiagramId($userdiagram->diagramId);
foreach ($userdiagrams as $userdiagram) {
$d->userdiagramDelete($userdiagram->userId, $userdiagram->diagramId);
}
//delete diagram
if ($d->diagramDelete($userdiagram->diagramId)) {
addMessage("Diagram deleted");
} else {
addError("Diagram could not be deleted from database");
}
redirect('../myDiagrams.php');
} else {
print 'Error: no right over that diagram';
}
}
