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


namespace PresenceDetection {
namespace Util {

Timer::Timer() :
	m_run(false),
	m_aborted(false),
	m_identifier(CreateRandomString(10))
{
}

Timer::~Timer()
{
	Abort();
	Wait();
}

bool Timer::operator==(const Timer& other) const
{
	return m_identifier == other.Identifier();
}

std::string Timer::Identifier() const
{
	return m_identifier;
}

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

void Timer::Abort()
{
	m_run.store(false, std::memory_order_release);
	{
		std::unique_lock<std::mutex> lock(m_mutex);
		m_aborted = true;
	}
	m_conditionVariable.notify_all();
}

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