fortuna/seed_file_management.h

#ifndef FORTUNA_SEED_FILE_MANAGER_H
#define FORTUNA_SEED_FILE_MANAGER_H

#include "accumulator.h"
#include "do_task.h"

#include <chrono>
#include <string>

namespace fortuna {

class SeedFileManager {
public:
	struct conf {
		// std::chrono::minutes write_interval{10};
		// 10 minutes (as the standard recommends) is a lot, go with 120s
		std::chrono::seconds write_interval{120};
		std::string seed_f_path{"./.fortuna.seed"};
		std::size_t seed_f_length{64};

		conf(){};
	};

	static auto is_job_running() -> bool;
	auto do_stuff() -> void;

	explicit SeedFileManager(
		const fortuna::accumulator::Accumulator& accumulator) noexcept;
	~SeedFileManager() noexcept;

protected:
	static auto set_job_running(bool) -> void;

private:
	const conf config;
	static constinit bool RUNNING;
	DoTask do_task;
	fortuna::accumulator::Accumulator accumulator;

	auto seed_file_exists() const -> bool;
	auto write_seed_file() -> void;
	auto update_seed_file() -> void;

}; // class SeedFileManager

} // namespace fortuna

#endif // FORTUNA_SEED_FILE_MANAGER_H