} else {
echo '<center><div class="alert alert-danger panel_login">Wrong username or password!</div></center>';
Utils::display_login();
}
} else {
if ($_GET["action"] == "logout") {
Utils::logout();
echo '<center><div class="alert alert-info panel_login">You have been successfully logged out.</div></center>';
Utils::display_login();
} else {
if ($_POST["actionDelete"] == "delete") {
$count = 0;
$delete_status = true;
Utils::display_admin_navbar("Category Manager");
foreach ($_POST["ckSelectItem"] as $item) {
$delete_status = $delete_status && $trivia->delete_theme($item);
$count += 1;
}
if ($delete_status) {
if ($count == 1) {
echo '<div class="container"><div class="alert alert-success col-sm-6 col-sm-offset-3">' . '1 Category successfully deleted.</div></div>';
} else {
echo '<div class="container"><div class="alert alert-success col-sm-6 col-sm-offset-3">' . $count . ' Categories successfully deleted.</div></div>';
}
} else {
echo '<div class="container"><div class="alert alert-danger col-sm-6 col-sm-offset-3">Error when trying to delete categories.</div></div>';
}
display_theme_panel();
} else {
if ($_POST["actionChange"] == "add" && $_POST["txtTheme"]) {
Utils::display_admin_navbar("Category Manager");
