$response = json_decode($raw_response);

if (json_last_error() !== JSON_ERROR_NONE) {
    error_log("MONCASH JSON ERROR: " . json_last_error_msg());
    error_log("RAW RESPONSE: " . $raw_response);
    exit('FAILED');
}

error_log("MONCASH RAW RESPONSE: " . $raw_response);

if (!$response || !is_object($response)) {
    error_log("INVALID MONCASH RESPONSE");
    exit('FAILED');
}

if (!empty($response->payment_status) && $response->payment_status == true) {

    $order_id = $response->reference ?? null;

    if ($order_id) {

        $order_id = absint($order_id);
        $order = wc_get_order($order_id);

        if ($order) {

            if ($order->has_status('completed')) {
                error_log("ORDER ALREADY COMPLETED: " . $order_id);
                exit('OK');
            }

            $order->payment_complete();

            if (!$order->has_status('completed')) {
                $order->update_status('completed');
            }

            wc_reduce_stock_levels($order->get_id());

            $order->add_order_note('Payment confirmed via MonCash.', true);

        } else {
            error_log("ORDER NOT FOUND: " . $order_id);
        }
    }

    exit('OK');
}

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