/*=========================================================================

   Library: iMSTK

   Copyright (c) Kitware, Inc. & Center for Modeling, Simulation,
   & Imaging in Medicine, Rensselaer Polytechnic Institute.

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0.txt

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

=========================================================================*/

#pragma once

#include "imstkLoopThreadObject.h"

#include <map>
#include <string>

#include <vrpn_Connection.h>
#include <vrpn_MainloopContainer.h>

namespace imstk
{
///
/// \brief Enumeration for device types
///
enum class DeviceType
{
    SpaceExplorer3DConnexion,
    Navigator3DConnexion,
    NovintFalcon,
    PhantomOmni,
    OSVR_HDK,
    Arduino
};

///
/// \class VRPNDeviceServer
/// \brief Devices server using VRPN
///
class VRPNDeviceServer : public LoopThreadObject
{
public:

    ///
    /// \brief Constructor
    ///
    VRPNDeviceServer(const std::string& machine = "localhost", int port = vrpn_DEFAULT_LISTEN_PORT_NO) :
        m_machine(machine),
        m_port(port),
        LoopThreadObject(machine + ":" + std::to_string(port))
    {}

    ///
    /// \brief Destructor
    ///
    virtual ~VRPNDeviceServer() override = default;

    ///
    /// \brief Add device
    ///
    void addDevice(const std::string& deviceName, DeviceType deviceType, int id = 0);

    ///
    /// \brief Add serial device
    ///
    void addSerialDevice(const std::string& deviceName, DeviceType deviceType, const std::string& port = "COM6", int baudRate = 57600, int id = 0);

protected:

    ///
    /// \brief Initialize the server module
    ///
    void initThread() override;

    ///
    /// \brief Run the server module
    ///
    void updateThread() override;

    ///
    /// \brief Clean the server module
    ///
    void stopThread() override;

private:

    ///
    /// \struct
    /// \brief TODO
    ///
    struct SerialInfo
    {
        int baudRate;
        std::string port;
    };

    const std::string m_machine;                                       ///< machine name or IP
    const int m_port;                                                  ///< connection port

    std::map<std::string, std::pair<DeviceType, int>> m_deviceInfoMap; ///< list of iMSTK client info
    std::map<std::string, SerialInfo> m_SerialInfoMap;
    vrpn_Connection* m_serverConnection = nullptr;                     ///< VRPN server connection
    vrpn_MainloopContainer* m_deviceConnections = nullptr;             ///< VRPN device connections
};
} // imstk
