<?php
    session_start();
    require_once '../../../assets/utils/db_auth.php';
    require_once '../../../assets/utils/classes/BarcodeManager.php';

    $label_action = $data['label_action'] ?? 'read';
    $product_sku  = trim($data['product_sku'] ?? '');
    $lot_number   = trim($data['lot_number'] ?? '');

    if (in_array($label_action, ['create', 'print', 'disable', 'enable'], true)) {
        require_role($user_role, ['owner', 'admin', 'staff']);
    }

    $bm = new BarcodeManager($pdo2, $company_id);

    if ($label_action === 'print') {
        $barcode = trim($data['barcode'] ?? '');
        if ($barcode === '') {
            $answer['message'] = 'No barcode provided.';
            http_response_code(400);
            exit(json_encode($answer));
        }
        $bm->recordPrint($barcode, 'sku');
        $answer['success'] = 1;
        exit(json_encode($answer));
    }

    if ($label_action === 'disable') {
        $barcode = trim($data['barcode'] ?? '');
        if ($barcode === '') {
            $answer['message'] = 'No barcode provided.';
            http_response_code(400);
            exit(json_encode($answer));
        }
        $bm->setStatus($barcode, 'sku', 0);
        $answer['success'] = 1;
        exit(json_encode($answer));
    }

    if ($label_action === 'create') {
        $serial_number  = trim($data['serial_number'] ?? '');
        $allow_unlisted = !empty($data['allow_unlisted']);

        if ($product_sku === '' || $lot_number === '' || $serial_number === '') {
            $answer['message'] = 'SKU, lot no, and serial no are required.';
            http_response_code(400);
            exit(json_encode($answer));
        }

        try {
            $output            = $bm->createSkuLabel($product_sku, $lot_number, $serial_number, $allow_unlisted);
            $answer['success'] = 1;
            $answer['output']  = $output;
        } catch (Exception $e) {
            $answer['message'] = $e->getMessage();
            http_response_code(($e->getMessage() === 'Lot not found.' || $e->getMessage() === 'SKU not found.') ? 404 : 400);
        }

        exit(json_encode($answer));
    }

    $answer['success'] = 1;
    $answer['output']  = $bm->listSkuLabels($product_sku, $lot_number);
    exit(json_encode($answer));
?>