// Ensure source code is readable:
if (isset($_GET['source'])) {
    highlight_file($_SERVER['SCRIPT_FILENAME']);
    exit;
}
// Confirm if user already login
if (!empty($session->name) && in_array("admin", $user->rights)) {
    // Display inventory panel
    require_once 'model/inventory.php';
    $inventory = new Inventory($session);
    require_once 'view/inventory.php';
    $inventoryPanel = new inventoryView($inventory);
    $inventoryPanel->output();
    $inventoryPanel->addBn();
    $inventoryPanel->delBn();
    // Check for inventory panel submissions
    if (isset($_POST['addInventory'])) {
        if (!$_POST['enterQty']) {
            $boxMsg[] = "Please enter an amount first.";
        } else {
            $inventory->input($_POST['enterPid'], $_POST['enterQty']);
            $inventory->add();
        }
    }
    if (isset($_POST['delInventory'])) {
        if (!$_POST['enterQty']) {
            $boxMsg[] = "Please enter an amount first.";
        } else {
            $inventory->input($_POST['enterPid'], $_POST['enterQty']);
            $inventory->delete();