/*
   Copyright (c) 2009, 2014, Oracle and/or its affiliates. All rights reserved.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   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, version 2.0, for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
*/

#ifndef _CONFIGFACTORY_HPP
#define _CONFIGFACTORY_HPP

#include <util/Properties.hpp>
#include <kernel/NodeBitmask.hpp>
#include <NdbEnv.h>

struct ConfigFactory
{

  static Uint32 get_ndbt_base_port(void)
  {
    Uint32 port = 0;
    const char* base_port_str = NdbEnv_GetEnv("NDBT_BASE_PORT", (char*)0, 0);
    if (base_port_str)
      port = atoi(base_port_str);
    if (!port)
      port = 11000; // default
    return port;
  }

  static Uint32 getNodeId(NodeBitmask & mask, unsigned arr[], unsigned i)
  {
    Uint32 nodeId = 0;
    if (arr != 0)
    {
      nodeId = arr[i];
    }
    else
    {
      nodeId = mask.find_first();
    }

    require(mask.get(nodeId));
    mask.clear(nodeId);
    return nodeId;
  }

  static Properties create(unsigned mgmds = 1,
                           unsigned ndbds = 1,
                           unsigned mysqlds = 1,
                           unsigned mgmd_nodeids[] = 0,
                           unsigned ndbd_nodeids[] = 0,
                           unsigned mysqld_nodeids[] = 0)
  {
    Uint32 base_port = get_ndbt_base_port() + /* mysqld */ 1;
    Properties config;
    require(mgmds >= 1 && ndbds >= 1 && mysqlds >= 1);
    NodeBitmask mask;
    mask.set();
    mask.clear(Uint32(0));

    for (unsigned i = 0; i < mgmds; i++)
    {
      Uint32 nodeId = getNodeId(mask, mgmd_nodeids, i);
      Properties node_settings;
      node_settings.put("NodeId", nodeId);
      node_settings.put("HostName", "localhost");
      node_settings.put("PortNumber", base_port + i);

      config.put("ndb_mgmd", nodeId, &node_settings);
    }

    for (unsigned i = 0; i < ndbds; i++)
    {
      Uint32 nodeId = getNodeId(mask, ndbd_nodeids, i);
      Properties node_settings;
      node_settings.put("NodeId", nodeId);
      if (ndbds == 1)
        node_settings.put("NoOfReplicas", 1);

      config.put("ndbd", nodeId, &node_settings);
    }

    for (unsigned i = 0; i < mysqlds; i++)
    {
      Uint32 nodeId = getNodeId(mask, mysqld_nodeids, i);
      Properties node_settings;
      node_settings.put("NodeId", nodeId);
      config.put("mysqld", nodeId, &node_settings);
    }

    return config;
  }

  static bool
  put(Properties& config, const char* section, Uint32 section_no,
      const char* key, Uint32 value)
  {
    Properties* p;
    if (!config.getCopy(section, section_no, &p))
      return false;
    if (!p->put(key, value))
      return false;
    if (!config.put(section, section_no, p, true))
      return false;
    return true;
  }

  static bool
  write_config_ini(Properties& config, const char* path)
  {
    FILE* config_file = fopen(path, "w");
    if (config_file == NULL)
      return false;

    Properties::Iterator it(&config);

    while (const char* name = it.next())
    {
      BaseString section_name(name);
      fprintf(config_file, "[%s]\n",
              section_name.substr(0, section_name.lastIndexOf('_')).c_str());

      const Properties* p;
      if (!config.get(name, &p))
        return false;

      Properties::Iterator it2(p);

      while (const char* name2 = it2.next())
      {

        PropertiesType type;
        if (!p->getTypeOf(name2, &type))
          return false;

        switch (type) {
        case PropertiesType_Uint32:
        {
          Uint32 value;
          if (!p->get(name2, &value))
            return false;
          fprintf(config_file, "%s=%u\n", name2, value);
          break;
        }

        case PropertiesType_char:
        {
          const char* value;
          if (!p->get(name2, &value))
            return false;
          fprintf(config_file, "%s=%s\n", name2, value);
          break;
        }

        default:
          abort();
          break;
        }
      }
      fprintf(config_file, "\n");
    }

    fclose(config_file);
    return true;
  }

  static bool
  create_directories(const char* path, Properties & config)
  {
    Properties::Iterator it(&config);

    while (const char* name = it.next())
    {
      BaseString dir;
      dir.assfmt("%s/%s", path, name);
      printf("Creating %s...\n", dir.c_str());
      if (!NdbDir::create(dir.c_str()))
        return false;
    }
    return true;
  }

};

#endif /* _CONFIGFACTORY_HPP */