property.hpp

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// (C) Copyright 2025, SECO Mind Srl
//
// SPDX-License-Identifier: Apache-2.0
 
#ifndef ASTARTE_DEVICE_SDK_PROPERTY_H
#define ASTARTE_DEVICE_SDK_PROPERTY_H

 
#include <optional>
#include <ostream>
 
#include "astarte_device_sdk/data.hpp"
#include "astarte_device_sdk/formatter.hpp"
 
namespace astarte::device {

class PropertyIndividual {
 public:
  explicit PropertyIndividual(const std::optional<Data>& data);

  [[nodiscard]] auto get_value() const -> const std::optional<Data>&;

  [[nodiscard]] auto operator==(const PropertyIndividual& other) const -> bool;

  [[nodiscard]] auto operator!=(const PropertyIndividual& other) const -> bool;
 
 private:
  std::optional<Data> data_;
};
 
}  // namespace astarte::device

template <>
struct astarte_fmt::formatter<astarte::device::PropertyIndividual> {
  template <typename ParseContext>
  constexpr auto parse(ParseContext& ctx) const {
    return ctx.begin();
  }

  template <typename FormatContext>
  auto format(const astarte::device::PropertyIndividual& data, FormatContext& ctx) const {
    const auto& opt_data = data.get_value();
    if (opt_data.has_value()) {
      return astarte_fmt::format_to(ctx.out(), "{}", opt_data.value());
    }
 
    return ctx.out();
  }
};

inline auto operator<<(std::ostream& out, const astarte::device::PropertyIndividual& data)
    -> std::ostream& {
  out << astarte_fmt::format("{}", data);
  return out;
}
 
#endif  // ASTARTE_DEVICE_SDK_PROPERTY_H