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#pragma once
#include <chrono>
#include <cstdint>
#include <vector>
namespace platform
{
// Note: this class is NOT thread-safe.
class BatteryLevelTracker
{
public:
class Subscriber
{
public:
virtual void OnBatteryLevelReceived(uint8_t level) = 0;
};
void Subscribe(Subscriber * subscriber);
void Unsubscribe(Subscriber * subscriber);
void UnsubscribeAll();
private:
void RequestBatteryLevel();
std::vector<Subscriber *> m_subscribers;
std::chrono::system_clock::time_point m_lastRequestTime;
uint8_t m_lastReceivedLevel = 0;
bool m_isTrackingInProgress = false;
};
} // platform
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