<?php
require_once 'includes/db.php';

if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    $order_id = $_POST['order_id'];
    $new_invoice_number = $_POST['new_invoice_number'];

    // Update invoice number and mark as accounted
    $stmt = $conn->prepare("UPDATE orders SET invoice_number = ?, is_accounted = 1, status = 'Accounted' WHERE id = ?");
    $stmt->bind_param("si", $new_invoice_number, $order_id);
    $stmt->execute();
    $stmt->close();

    header("Location: pages/invoice_management.php");
    exit;
}
?>