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#pragma once
#include <QDateTime>
#include <QMetaType>
#include <QtDebug>
#include "util/assert.h"
/// Counts the total number of times a track has been played
/// and if the track has been played during the current session.
class PlayCounter final {
public:
explicit PlayCounter(int timesPlayed = 0)
: m_timesPlayed(timesPlayed),
m_playedFlag(false) {
}
/// Set the total number of times a track has been played
/// while keeping the played flag and time stamp as is.
void setTimesPlayed(int timesPlayed) {
DEBUG_ASSERT(timesPlayed >= 0);
m_timesPlayed = timesPlayed;
}
/// Returns the total number of times a track has been played
int getTimesPlayed() const {
return m_timesPlayed;
}
/// Sets the (last) played at time stamp of a track without
/// affecting the play count.
void setLastPlayedAt(const QDateTime& lastPlayedAt) {
m_lastPlayedAt = lastPlayedAt;
}
/// Returns the actual time at which the track has been played.
const QDateTime& getLastPlayedAt() const {
return m_lastPlayedAt;
}
/// Returns true if track is considered as played during the current session.
bool isPlayed() const {
return m_playedFlag;
}
/// Sets or resets the played flag for the current session.
void setPlayedFlag(bool setPlayed) {
m_playedFlag = setPlayed;
}
/// Sets the played status of a track for the current session but
/// keeps the total play count.
void triggerLastPlayedNow() {
setLastPlayedNow();
setPlayedFlag(true);
}
/// Sets the played status of a track for the current session and
/// increments or decrements the total play count accordingly.
void updateLastPlayedNowAndTimesPlayed(bool setPlayed);
private:
void incTimesPlayed() {
DEBUG_ASSERT(m_timesPlayed >= 0);
++m_timesPlayed;
}
void decTimesPlayed() {
VERIFY_OR_DEBUG_ASSERT(m_timesPlayed > 0) {
// Prevent invalid state
m_timesPlayed = 1;
}
--m_timesPlayed;
}
void setLastPlayedNow() {
setLastPlayedAt(QDateTime::currentDateTime());
}
int m_timesPlayed;
QDateTime m_lastPlayedAt;
// The last played flag is not stored persistently and
// only valid during the current session.
bool m_playedFlag;
};
Q_DECLARE_METATYPE(PlayCounter)
bool operator==(const PlayCounter& lhs, const PlayCounter& rhs);
inline bool operator!=(const PlayCounter& lhs, const PlayCounter& rhs) {
return !(lhs == rhs);
}
QDebug operator<<(QDebug dbg, const PlayCounter& arg);
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