#pragma once

#include <qcolor.h>
#include <qeasingcurve.h>
#include <qobject.h>
#include <qqmlengine.h>
#include <qqmlintegration.h>

namespace ZShell::controls {

class LinearIndicatorManager;

class LinearIndicatorSegment : public QObject {
Q_OBJECT
QML_ELEMENT
        QML_UNCREATABLE("LinearIndicatorSegments can only be retrieved from a "
                        "LinearIndicatorManager.")

Q_PROPERTY(qreal startFraction READ startFraction NOTIFY updated FINAL)
Q_PROPERTY(qreal endFraction READ endFraction NOTIFY updated FINAL)
Q_PROPERTY(int gapSize READ gapSize NOTIFY updated FINAL)

public:
explicit LinearIndicatorSegment(int gap, QObject* parent = nullptr);

qreal startFraction() const;
qreal endFraction() const;
int gapSize() const;

signals:
void updated();

private:
qreal m_startFraction;
qreal m_endFraction;
int m_gapSize;

friend LinearIndicatorManager;
};

class LinearIndicatorManager : public QObject {
Q_OBJECT
QML_ELEMENT

Q_PROPERTY(
	QList<ZShell::controls::LinearIndicatorSegment*> activeIndicators READ activeIndicators CONSTANT FINAL)

Q_PROPERTY(qreal progress READ progress WRITE update NOTIFY updated FINAL)
Q_PROPERTY(qreal completeEndProgress READ completeEndProgress WRITE updateCompleteEndProgress NOTIFY updated FINAL)
Q_PROPERTY(int gap READ gap WRITE setGap NOTIFY updated FINAL)

Q_PROPERTY(qreal duration READ duration CONSTANT FINAL)
Q_PROPERTY(qreal completeEndDuration READ completeEndDuration CONSTANT FINAL)

public:
explicit LinearIndicatorManager(QObject* parent = nullptr);

QList<LinearIndicatorSegment*> activeIndicators() const;

qreal progress() const;
qreal completeEndProgress() const;

int gap() const;
void setGap(int gap);

int duration() const;
int completeEndDuration() const;

void update(qreal progress);
void updateCompleteEndProgress(qreal progress);

signals:
void updated();

private:
static constexpr int SEGMENTS = 2;

std::array<QEasingCurve, 4> m_interpolators;
qreal m_progress;
qreal m_completeEndProgress;
int m_gap;

std::array<LinearIndicatorSegment*, SEGMENTS> m_activeIndicators;
};

} // namespace ZShell::controls
