#include <json/json.h>

#include <exception>
#include <map>
#include <memory>
#include <set>
#include <string>

#include "librados_fwd.hpp"

namespace Json
{
class Reader;
class FastWriter;
class Value;
} // namespace Json

class RadosUtils
{
  public:
    explicit RadosUtils(librados::Rados *rados_);
    unsigned int get_obj_acting_primary(const std::string &name, const std::string &pool);
    std::map<std::string, std::string> get_osd_location(unsigned int osd);
    std::set<unsigned int> get_osds(const std::string &pool);
    unsigned int get_pool_size(const std::string &pool);

  private:
    Json::Value do_mon_command(Json::Value &cmd);
    librados::Rados *rados;
    std::unique_ptr<Json::Reader> json_reader;
    std::unique_ptr<Json::FastWriter> json_writer;
};

class MyRadosException : public std::exception
{
  public:
    MyRadosException(int err, const std::string &msg) : descr("Rados err " + std::to_string(err) + ": " + msg){};
    const char *what() const throw()
    {
        return descr.c_str();
    }

  private:
    std::string descr;
};