text: // Copyright (c) 2014-2018 The Bitcoin Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #ifndef BITCOIN_CHAINPARAMSBASE_H
  #define BITCOIN_CHAINPARAMSBASE_H
  
  #include <memory>
  #include <string>
  #include <vector>
  
  /**
   * CBaseChainParams defines the base parameters (shared between bgold-cli and bgoldd)
   * of a given instance of the Bitcoin system.
   */
  class CBaseChainParams
  {
  public:
      /** BIP70 chain name strings (main, test or regtest) */
      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);
  
  /**
   *Set the arguments for chainparams
   */
  void SetupChainParamsBaseOptions();
  
  /**
   * Return the currently selected parameters. This won't change after app
   * 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);
  
  #endif // BITCOIN_CHAINPARAMSBASE_H
  