From 129516a48f8824163dcf1124523b1c906749d449 Mon Sep 17 00:00:00 2001
From: surtur <a_mirre@utb.cz>
Date: Mon, 13 Dec 2021 05:59:27 +0100
Subject: [PATCH] add seed_file_management.h holding SeedFileManager

---
 CMakeLists.txt         |  2 +-
 seed_file_management.h | 37 +++++++++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+), 1 deletion(-)
 create mode 100644 seed_file_management.h

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b15b150..31139b9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -184,7 +184,7 @@ add_subdirectory(lib/da_threading EXCLUDE_FROM_ALL)
     endif(NOT CMAKE_EXE_LINKER_FLAGS MATCHES "-fuse-ld=lld")
   endif()
 
-add_executable(fortuna main.cpp generator.cpp generator.h fortuna.cpp fortuna.h accumulator.cpp accumulator.h pool.cpp pool.h event_adder.h event_adder_impl.h event_scheduler.h entropy_src.h urandom_entropy_src.h do_task.cpp do_task.h util.h)
+add_executable(fortuna main.cpp generator.cpp generator.h fortuna.cpp fortuna.h accumulator.cpp accumulator.h pool.cpp pool.h event_adder.h event_adder_impl.h event_scheduler.h entropy_src.h urandom_entropy_src.h do_task.cpp do_task.h util.h seed_file_management.h)
 # ref: https://cmake.org/pipermail/cmake/2016-May/063400.html
 target_link_libraries(fortuna
     PRIVATE cryptopp
diff --git a/seed_file_management.h b/seed_file_management.h
new file mode 100644
index 0000000..bb21c5c
--- /dev/null
+++ b/seed_file_management.h
@@ -0,0 +1,37 @@
+#ifndef FORTUNA_SEED_FILE_MANAGER_H
+#define FORTUNA_SEED_FILE_MANAGER_H
+
+#include <chrono>
+#include <string>
+
+#include "accumulator.h"
+#include "do_task.h"
+
+namespace fortuna {
+
+class SeedFileManager {
+public:
+	struct conf
+	{
+		std::chrono::minutes write_interval{10};
+		std::string seed_f_path = "./fortuna.seed";
+		std::size_t seed_f_length = 64;
+
+		conf(){};
+	};
+
+private:
+	const conf config;
+	DoTask do_task;
+	fortuna::accumulator::Accumulator& accumulator;
+
+	auto write_seed_file() -> void;
+	auto update_seed_file() -> void;
+
+public:
+	SeedFileManager(conf config, fortuna::accumulator::Accumulator& accumulator);
+}; // class SeedFileManager
+
+} // namespace fortuna
+
+#endif // FORTUNA_SEED_FILE_MANAGER_H