I’m trying to make that with each new order that is received, the export of the plugin is generated automatically with the default settings that already has (in this case a pdf with a php code to configure the output), but I can’t make the sending of the same.

I tried this code but I can’t get it to send, and it’s clearly beyond my level.

add_action( 'woocommerce_new_order', 'new_order_export_and_email' );

function new_order_export_and_email( $order_id ) {

    // Check if the "WooCommerce Order Export Lite" plugin is installed and active
    if ( ! class_exists( 'WOO_Order_Export_Lite' ) ) {
        return;
    }

    // Generate the PDF export using the plugin's default settings
    $exporter = new WOO_Order_Export_Lite();
    $export_data = $exporter->export_order( $order_id );

    // Prepare the PDF file as an attachment
    $tempfile = tmpfile();
    fwrite( $tempfile, $export_data );
    $attachment = stream_get_meta_data( $tempfile )['uri'];

    // Prepare the email details
    $subject = "Nuevo pedido de WooCommerce - #" . $order_id . '"';
    $message = "Se ha generado un nuevo pedido en su tienda WooCommerce.nn";
    $message .= "Detalles del pedido:n";
    $message .= $export_data; // Include export data in the email body (optional)

    // Configure the email sending
    $to_email = "[email protected]"; // Replace with the recipient email address
    $from_email = "[email protected]"; // Replace with the store's email address
    $headers = "From: {$from_email}n";

    // Send the email with the PDF attachment
    wp_mail( $to_email, $subject, $message, $headers, array( $attachment => 'pedido-' . $order_id . '.pdf' ) );

    // Close and delete the temporary file
    fclose( $tempfile );
}