local_api.h

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/***************************************************************************
 *   Copyright (C) 2023 Alec Leamas                                        *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, see <https://www.gnu.org/licenses/>. *
 **************************************************************************/
 
#ifndef LOCAL_SERVER_API__
#define LOCAL_SERVER_API__
 
#include <wx/cmdline.h>
 
#include "observable_evtvar.h"
 
using LocalApiResult = std::pair<bool, std::string>;
 
enum class CmdlineAction { Raise, Quit, Open, GetRestEndpoint, Fail, Skip };
 
class LocalApiException : public std::exception {
public:
  LocalApiException(const std::string why) : reason(why) {}
 
  const char* str() { return reason.c_str(); }
 
private:
  std::string reason;
};
 
class LocalServerApi {
public:
  static LocalServerApi& GetInstance();
 
  static void ReleaseInstance();
 
  EventVar on_raise;
 
  EventVar on_quit;
 
  std::function<bool(const std::string&)> open_file_cb;
 
  virtual void SetGetRestApiEndpointCb(std::function<std::string()> cb) {
    get_rest_api_endpoint_cb = cb;
  }
 
  std::function<std::string()> get_rest_api_endpoint_cb;
 
protected:
  LocalServerApi()
      : get_rest_api_endpoint_cb([]() { return "0.0.0.0/1024"; }) {}
 
  ~LocalServerApi() = default;
};
 
class LocalClientApi {
public:
  static std::unique_ptr<LocalClientApi> GetClient();
 
  LocalClientApi() = default;
  virtual ~LocalClientApi() = default;
 
  virtual LocalApiResult HandleCmdline(const wxCmdLineParser& parser);
  virtual LocalApiResult HandleCmdline(CmdlineAction action,
                                       const std::string& arg);
 
  virtual LocalApiResult SendRaise() = 0;
  virtual LocalApiResult SendOpen(const char* path) = 0;
  virtual LocalApiResult SendQuit() = 0;
  virtual LocalApiResult GetRestEndpoint() = 0;
 
protected:
  CmdlineAction ParseArgs(const wxCmdLineParser& parser, std::string& arg);
};
 
#endif  //  LOCAL_SERVER_API__