module.exports = {
    // 获取当前已连接的设备并发送CPCL指令
    sendCPCLDataToConnectedPrinter: function(cpclData) {
        try {
            // 获取BluetoothAdapter实例
            var BluetoothAdapter = plus.android.importClass("android.bluetooth.BluetoothAdapter");
            var BluetoothDevice = plus.android.importClass("android.bluetooth.BluetoothDevice");
            var BluetoothSocket = plus.android.importClass("android.bluetooth.BluetoothSocket");
            var UUID = plus.android.importClass("java.util.UUID");

            var bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
            if (!bluetoothAdapter.isEnabled()) {
                throw new Error('Bluetooth is not enabled');
            }

            // 获取已连接的设备
            var pairedDevices = bluetoothAdapter.getBondedDevices();
            if (pairedDevices.isEmpty()) {
                throw new Error('No paired devices found');
            }

            // 获取第一个已配对设备（可以根据需要改为选择具体的设备）
            var deviceIterator = pairedDevices.iterator();
            var device = deviceIterator.next();  // 这里假设我们只选择第一个已配对的设备

            var socket = device.createRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB")); // 标准蓝牙串口UUID

            // 连接到已配对设备
            socket.connect();
            var outputStream = socket.getOutputStream();

            // 发送CPCL指令
            outputStream.write(cpclData);
            outputStream.flush();

            // 发送完成后关闭连接
            outputStream.close();
            socket.close();

            console.log("CPCL data sent successfully to the printer");

            return true;
        } catch (e) {
            console.error("Failed to send CPCL data:", e);
            return false;
        }
    }
};