// SysfsRead.hpp
//
// SPDX-License-Identifier GPL-3.0-or-later
//  Author: Unai Blazquez Gomez <unaibg2000@gmail.com>

#pragma once

#include <filesystem>

enum class SysfsStatus
{
  /// @brief File cannot be opened or does not exist.
  Unreachable,
  /// @brief File exists but is just empty.
  Empty,
  /// @brief File content indicates taht production is enabled (e.g. "1")
  Enabled,
  /// @brief File requests a cooldown ("error: temp too high")
  ErrorTempTooHigh,
  /// @brief File contains an UnexpectedValue; producer must not send.
  UnexpectedValue
};

class SysfsReader
{
 public:
  /// @brief Construct a SysfsReader bound to a specific input file path.
  /// @param input_path Path to the sysfs-like input file.
  explicit SysfsReader(const std::filesystem::path& input_path);

  /// @brief Read and interpret the current status of the input file.
  ///
  /// This function never throws on common I/O errors; instead it reports them
  /// via the SysfsStatus enum.
  /// @return Interpreted status of the input file
  SysfsStatus read_status() const;

 private:
  std::filesystem::path m_path;  // Path to the input file.
};