#include <chrono>
#include "Timer.h"


namespace PresenceDetection {
namespace Util {

Timer::Timer() :
	m_run(false)
{
}

Timer::~Timer()
{
	Stop();
}

void Timer::Start(int interval, std::function<void(void)> function)
{
	if (m_run.load(std::memory_order_acquire))
		Stop();

	m_run.store(true, std::memory_order_release);
	m_thread = std::thread([this, interval, function]()
		{
			while (m_run.load(std::memory_order_acquire))
			{
				function();
				std::this_thread::sleep_for(std::chrono::milliseconds(interval));
			}
		});
}

void Timer::Stop()
{
	m_run.store(false, std::memory_order_release);
}

bool Timer::IsRunning() const noexcept
{
	return (m_run.load(std::memory_order_acquire) && m_thread.joinable());
}

void Timer::Wait()
{
	if (m_thread.joinable())
		m_thread.join();
}

} // namespace Util
} // namespace PresenceDetection