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

    $po = new PurchaseOrderManager($pdo2, $company_id);

    $id = (int)($data['id'] ?? 0);

    if ($id > 0) {
        $result = $po->getPoById($id);
        if (!$result) {
            http_response_code(404);
            $answer['message'] = 'Purchase order not found.';
            exit(json_encode($answer));
        }
        $answer['output'] = $result;

        $answer['receivable_items'] = $po->getReceivableItems($result);
        $answer['returnable_items'] = $po->getReturnableItems($result);

        // Check for active purchase invoice linked to this PO
        $active_pi_id = $po->getActivePurchaseInvoiceId($id);
        $answer['has_active_pi'] = $active_pi_id > 0 ? 1 : 0;
        $answer['active_pi_id']  = $active_pi_id;

    } else {
        $answer['output'] = $po->getPoList();
    }

    $answer['success'] = 1;
    exit(json_encode($answer));
?>