#ifndef FORTUNA_URANDOM_ENTROPY_SRC_CPP
#define FORTUNA_URANDOM_ENTROPY_SRC_CPP

#include "urandom_entropy_src.h"

namespace fortuna {
namespace accumulator {

std::vector<char> UrandomEntropySrc::bytes{};

auto UrandomEntropySrc::schedule(accumulator::EventSchedulerImpl scheduler)
	-> void {
	scheduler.schedule(std::chrono::milliseconds(100));
}

auto UrandomEntropySrc::event(accumulator::EventAdderImpl adder) -> void {
	std::ifstream file;
	file.exceptions(std::ifstream::failbit | std::ifstream::badbit);

	try {
		std::ifstream urandom("/dev/urandom", std::ios::in | std::ios::binary);
		// check if stream is open
		if (urandom) {
			urandom.read(
				reinterpret_cast<char*>(&UrandomEntropySrc::bytes),
				reinterpret_cast<uint64_t>(UrandomEntropySrc::bytes.size()));
			urandom.close();
		}
		else {
			// open failed
			fmt::print(stderr, "Failed to open /dev/urandom\n");
		}
	}
	catch (std::ifstream::failure& e) {
		fmt::print("io exception caugth: {}\n", e.what());
	}
}


} // namespace accumulator
} // namespace fortuna

#endif // FORTUNA_URANDOM_ENTROPY_SRC_CPP