text: // Copyright (c) 2010 Satoshi Nakamoto
  // Copyright (c) 2009-2018 The Picscoin Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include <chainparamsbase.h>
  
  #include <tinyformat.h>
  #include <util/system.h>
  #include <util/memory.h>
  
  #include <assert.h>
  
  const std::string CBaseChainParams::MAIN = "main";
  const std::string CBaseChainParams::TESTNET = "test";
  const std::string CBaseChainParams::REGTEST = "regtest";
  
  void SetupChainParamsBaseOptions()
  {
      gArgs.AddArg("-regtest", "Enter regression test mode, which uses a special chain in which blocks can be solved instantly. "
                                     "This is intended for regression testing tools and app development.", ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::CHAINPARAMS);
      gArgs.AddArg("-testnet", "Use the test chain", ArgsManager::ALLOW_ANY, OptionsCategory::CHAINPARAMS);
      gArgs.AddArg("-vbparams=deployment:start:end", "Use given start/end times for specified version bits deployment (regtest-only)", ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::CHAINPARAMS);
  }
  
  static std::unique_ptr<CBaseChainParams> globalChainBaseParams;
  
  const CBaseChainParams& BaseParams()
  {
      assert(globalChainBaseParams);
      return *globalChainBaseParams;
  }
  
  std::unique_ptr<CBaseChainParams> CreateBaseChainParams(const std::string& chain)
  {
      if (chain == CBaseChainParams::MAIN)
          return MakeUnique<CBaseChainParams>("", 1336);
      else if (chain == CBaseChainParams::TESTNET)
          return MakeUnique<CBaseChainParams>("testnet4", 11336);
      else if (chain == CBaseChainParams::REGTEST)
          return MakeUnique<CBaseChainParams>("regtest", 25566);
      else
          throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
  }
  
  void SelectBaseParams(const std::string& chain)
  {
      globalChainBaseParams = CreateBaseChainParams(chain);
      gArgs.SelectConfigNetwork(chain);
  }
  