/**
* POST, res, target
*
* Retags all the tagevents tagged by "source" as "target", then
* deletes "source".
*
* Returns 204 on success, 404 on missing tags.
*
*/
function tagMerge(folksoQuery $q, folksoDBconnect $dbc, folksoSession $fks)
{
$r = new folksoResponse();
$u = $fks->userSession(null, 'folkso', 'redac');
if (!$u instanceof folksoUser || !$u->checkUserRight('folkso', 'redac')) {
return $r->unAuthorized($u);
}
try {
$i = new folksoDBinteract($dbc);
/* build query. all the funny quote marks are there because the
stored procedure 'tagmerge' needs 4 arguments to distinguish
between numeric args and non numeric args*/
$source_part = '';
if (is_numeric($q->tag)) {
$source_part = $q->tag . ", ''";
} else {
$source_part = "'', '" . $i->dbquote($q->tag) . "'";
}
$target_part = '';
if (is_numeric($q->get_param('target'))) {
$target_part = $q->get_param('target') . ", ''";
} else {
$target_part = "'', '" . $i->dbquote($q->get_param('target')) . "'";
}
$i->query("CALL TAGMERGE({$source_part}, {$target_part})");
} catch (dbException $e) {
return $r->handleDBexception($e);
}
$row = $i->result->fetch_object();
$newid = $row->newid;
switch ($row->status) {
case 'OK':
$r->setOk(204, 'Merge successful');
$r->t($i->first_val('status'));
$r->addHeader('X-Folksonomie-TargetId: ' . $newid);
break;
case 'NOTARGET':
$r->setError(404, 'Invalid target tag', $status . $q->get_param('target') . " is not present in the database. Merge not accomplished.");
break;
case 'NOSOURCE':
$r->setError(404, 'Invalid source tag', $q->res . " is not present in the database. Merge not accomplished.");
break;
default:
$r->setError(500, 'Strange server error', "fv: " . $status . 'This should not have happened.' . $row->status);
}
return $r;
}