62 lines
1.5 KiB
C++
62 lines
1.5 KiB
C++
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#include "platform/battery_tracker.hpp"
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#include "platform/platform.hpp"
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namespace
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{
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auto const kBatteryTrackingInterval = std::chrono::minutes(10);
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bool IsLevelExpired(std::chrono::system_clock::time_point lastRequestTime)
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{
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return std::chrono::system_clock::now() - lastRequestTime > kBatteryTrackingInterval;
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}
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} // namespace
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namespace platform
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{
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void BatteryLevelTracker::Subscribe(Subscriber * subscriber)
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{
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m_subscribers.push_back(subscriber);
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if (!IsLevelExpired(m_lastRequestTime))
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subscriber->OnBatteryLevelReceived(m_lastReceivedLevel);
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if (!m_isTrackingInProgress)
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{
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m_isTrackingInProgress = true;
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RequestBatteryLevel();
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}
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}
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void BatteryLevelTracker::Unsubscribe(Subscriber * subscriber)
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{
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m_subscribers.erase(std::remove(m_subscribers.begin(), m_subscribers.end(), subscriber), m_subscribers.end());
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}
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void BatteryLevelTracker::UnsubscribeAll()
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{
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m_subscribers.clear();
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}
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void BatteryLevelTracker::RequestBatteryLevel()
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{
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if (m_subscribers.empty())
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{
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m_isTrackingInProgress = false;
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return;
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}
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if (IsLevelExpired(m_lastRequestTime))
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{
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m_lastReceivedLevel = GetPlatform().GetBatteryLevel();
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m_lastRequestTime = std::chrono::system_clock::now();
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}
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for (auto s : m_subscribers)
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s->OnBatteryLevelReceived(m_lastReceivedLevel);
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GetPlatform().RunDelayedTask(Platform::Thread::Background, kBatteryTrackingInterval, [this]
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{ GetPlatform().RunTask(Platform::Thread::Gui, [this] { RequestBatteryLevel(); }); });
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}
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} // namespace platform
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