/*============================================================================
  CMake - Cross Platform Makefile Generator
  Copyright 2015 Stephen Kelly <steveire@gmail.com>
  Copyright 2016 Tobias Hunger <tobias.hunger@qt.io>

  Distributed under the OSI-approved BSD License (the "License");
  see accompanying file Copyright.txt for details.

  This software is distributed WITHOUT ANY WARRANTY; without even the
  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the License for more information.
============================================================================*/

#pragma once

#include "cmListFileCache.h"
#include "cmState.h"

#if defined(CMAKE_BUILD_WITH_CMAKE)
#include "cm_jsoncpp_value.h"
#include "cm_uv.h"
#endif

#include <string>
#include <vector>

class cmServerProtocol;
class cmServerRequest;
class cmServerResponse;

class cmServer
{
public:
  cmServer();
  ~cmServer();

  void Serve();

  // for callbacks:
  void PopOne();
  void handleData(std::string const& data);

private:
  void RegisterProtocol(cmServerProtocol* protocol);

  // Handle requests:
  cmServerResponse SetProtocolVersion(const cmServerRequest& request);

  void PrintHello() const;

  // Write responses:
  void WriteProgress(const cmServerRequest& request, int min, int current,
                     int max, const std::string& message) const;
  void WriteResponse(const cmServerResponse& response) const;
  void WriteParseError(const std::string& message) const;

  void WriteJsonObject(Json::Value const& jsonValue) const;

  static cmServerProtocol* FindMatchingProtocol(
    const std::vector<cmServerProtocol*>& protocols, int major, int minor);

  cmServerProtocol* Protocol = nullptr;
  std::vector<cmServerProtocol*> SupportedProtocols;
  std::vector<std::string> Queue;

  std::string DataBuffer;
  std::string JsonData;

  uv_loop_t* Loop = nullptr;

  typedef union
  {
    uv_tty_t tty;
    uv_pipe_t pipe;
  } InOutUnion;

  InOutUnion Input;
  InOutUnion Output;
  uv_stream_t* InputStream = nullptr;
  uv_stream_t* OutputStream = nullptr;

  mutable bool Writing = false;

  friend class cmServerRequest;
};