//----------------------------------------------------------------------------

#ifndef SHARING_OWNERSHIP_HPP
#define SHARING_OWNERSHIP_HPP

#include <string>
#include <vector>

namespace sharing {

struct Exam
{
  std::string title;
  std::vector<double> marks;
};

Exam
make_Exam(std::string title,
          std::vector<double> marks);

struct Sensor
{
  std::string device;
  std::vector<double> values;
};

Sensor
make_Sensor(std::string device,
            std::vector<double> values);

struct Album
{
  std::string artist;
  std::vector<std::string> songs;
};

Album
make_Album(std::string artist,
           std::vector<std::string> songs);

} // namespace sharing

#endif // SHARING_OWNERSHIP_HPP

//----------------------------------------------------------------------------

//----------------------------------------------------------------------------

#include "ownership.hpp"

namespace sharing {

Exam
make_Exam(std::string title,
          std::vector<double> marks)
{
  return Exam{std::move(title), std::move(marks)};
}

Sensor
make_Sensor(std::string device,
            std::vector<double> values)
{
  return Sensor{std::move(device), std::move(values)};
}

Album
make_Album(std::string artist,
           std::vector<std::string> songs)
{
  return Album{std::move(artist), std::move(songs)};
}

} // namespace sharing

//----------------------------------------------------------------------------

//----------------------------------------------------------------------------

#include "ownership.hpp"

#include <iostream>

void
test_make_Exam()
{
  std::cout << "\n~~~~ " << __func__ << "() ~~~~\n";
  std::cout << "• from prepared variables\n";
  std::string title="maths";
  std::vector<double> marks={8.0, 15.0, 4.0, 13.0, 11.0,
                             9.0, 17.0, 10.0, 12.0, 7.0};
  const auto e1=sharing::make_Exam(std::move(title), std::move(marks));
  std::cout << e1.title << ':';
  for(const auto &elem: e1.marks)
  {
    std::cout << ' ' << elem;
  }
  std::cout << '\n';
  std::cout << "any state could be suitable for the previous variables...\n";
  std::cout << title << ':';
  for(const auto &elem: marks)
  {
    std::cout << ' ' << elem;
  }
  std::cout << "\n... but the empty state is the most probable.\n";
  std::cout << "• from temporaries\n";
  const auto e2=sharing::make_Exam("maths", {8.0, 15.0, 4.0, 13.0, 11.0,
                                             9.0, 17.0, 10.0, 12.0, 7.0});
  std::cout << e2.title << ':';
  for(const auto &elem: e2.marks)
  {
    std::cout << ' ' << elem;
  }
  std::cout << '\n';
}

void
test_make_Sensor()
{
  std::cout << "\n~~~~ " << __func__ << "() ~~~~\n";
  std::cout << "• from prepared variables\n";
  std::string device="pressure";
  std::vector<double> values={0.8, 1.5, 0.4, 1.3, 1.1,
                              0.9, 1.7, 1.0, 1.2, 0.7};
  const auto s1=sharing::make_Sensor(std::move(device), std::move(values));
  std::cout << s1.device << ':';
  for(const auto &elem: s1.values)
  {
    std::cout << ' ' << elem;
  }
  std::cout << '\n';
  std::cout << "any state could be suitable for the previous variables...\n";
  std::cout << device << ':';
  for(const auto &elem: values)
  {
    std::cout << ' ' << elem;
  }
  std::cout << "\n... but the empty state is the most probable.\n";
  std::cout << "• from temporaries\n";
  const auto s2=sharing::make_Sensor("pressure", {0.8, 1.5, 0.4, 1.3, 1.1,
                                                  0.9, 1.7, 1.0, 1.2, 0.7});
  std::cout << s2.device << ':';
  for(const auto &elem: s2.values)
  {
    std::cout << ' ' << elem;
  }
  std::cout << '\n';
}

void
test_make_Album()
{
  std::cout << "\n~~~~ " << __func__ << "() ~~~~\n";
  std::cout << "• from prepared variables\n";
  std::string artist="David Bowie";
  std::vector<std::string> songs={"Space Oddity",
                                  "Life On Mars",
                                  "Ziggy Stardust",
                                  "The Jean Genie",
                                  "Ashes To Ashes",
                                  "Heroes"};
  const auto a1=sharing::make_Album(std::move(artist), std::move(songs));
  std::cout << a1.artist << ':';
  for(const auto &elem: a1.songs)
  {
    std::cout << "  '" << elem << '\'';
  }
  std::cout << '\n';
  std::cout << "any state could be suitable for the previous variables...\n";
  std::cout << artist << ':';
  for(const auto &elem: songs)
  {
    std::cout << "  '" << elem << '\'';
  }
  std::cout << "\n... but the empty state is the most probable.\n";
  std::cout << "• from temporaries\n";
  const auto a2=sharing::make_Album("David Bowie",
                                    {"Space Oddity",
                                     "Life On Mars",
                                     "Ziggy Stardust",
                                     "The Jean Genie",
                                     "Ashes To Ashes",
                                     "Heroes"});
  std::cout << a2.artist << ':';
  for(const auto &elem: a2.songs)
  {
    std::cout << "  '" << elem << '\'';
  }
  std::cout << '\n';
}

int
main()
{
  test_make_Exam();
  test_make_Sensor();
  test_make_Album();
  return 0;
}

//----------------------------------------------------------------------------