text: // Copyright (c) 2014-2021 The Bitcoin developers
  // Copyright (c) 2017-2021 The TrumpCoin developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #ifndef TrumpCoin_CHAINPARAMSBASE_H
  #define TrumpCoin_CHAINPARAMSBASE_H
  
  #include <memory>
  #include <string>
  #include <vector>
  
  /**
   * CBaseChainParams defines the base parameters (shared between trumpcoin-cli and trumpcoind)
   * of a given instance of the TrumpCoin system.
   */
  class CBaseChainParams
  {
  public:
      ///@{
      /** Chain name strings */
      static const std::string MAIN;
      static const std::string TESTNET;
      static const std::string REGTEST;
      ///@}
  
      const std::string& DataDir() const { return strDataDir; }
      int RPCPort() const { return nRPCPort; }
  
      CBaseChainParams() = delete;
      CBaseChainParams(const std::string& data_dir, int rpc_port) : nRPCPort(rpc_port), strDataDir(data_dir) {}
  
  private:
      int nRPCPort;
      std::string strDataDir;
  };
  
  /**
   * Creates and returns a std::unique_ptr<CBaseChainParams> of the chosen chain.
   * @returns a CBaseChainParams* of the chosen chain.
   * @throws a std::runtime_error if the chain is not supported.
   */
  std::unique_ptr<CBaseChainParams> CreateBaseChainParams(const std::string& chain);
  
  /**
   * Append the help messages for the chainparams options to the
   * parameter string.
   */
  void AppendParamsHelpMessages(std::string& strUsage, bool debugHelp=true);
  
  /**
   * Return the currently selected parameters. This won't change after app startup
   * startup, except for unit tests.
   */
  const CBaseChainParams& BaseParams();
  
  /** Sets the params returned by Params() to those for the given network. */
  void SelectBaseParams(const std::string& chain);
  
  /**
   * Returns the appropriate chain name from the program arguments.
   * @return CBaseChainParams::MAX_NETWORK_TYPES if an invalid combination is given. CBaseChainParams::MAIN by default.
   */
  std::string ChainNameFromCommandLine();
  
  #endif // TrumpCoin_CHAINPARAMSBASE_H
  