// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0

#include "profilertr.h"
#include "qmlprofileranimationsmodel.h"
#include "qmlprofilermodelmanager.h"

#include <utils/qtcassert.h>
#include <tracing/timelineformattime.h>

#include <QCoreApplication>
#include <QHash>
#include <QUrl>
#include <QString>
#include <QStack>

using namespace QmlDebug;
namespace Profiler::Internal {

QmlProfilerAnimationsModel::QmlProfilerAnimationsModel(QmlProfilerModelManager *manager,
                                                       Timeline::TimelineModelAggregator *parent) :
    QmlProfilerTimelineModel(manager, Event, UndefinedRangeType, ProfileAnimations, parent)
{
    m_minNextStartTimes[0] = m_minNextStartTimes[1] = 0;
}

void QmlProfilerAnimationsModel::clear()
{
    m_minNextStartTimes[0] = m_minNextStartTimes[1] = 0;
    m_maxGuiThreadAnimations = m_maxRenderThreadAnimations = 0;
    m_data.clear();
    QmlProfilerTimelineModel::clear();
}

void QmlProfilerAnimationsModel::loadEvent(const QmlEvent &event, const QmlEventType &type)
{
    Q_UNUSED(type)
    AnimationThread lastThread = (AnimationThread)event.number<qint32>(2);

    // initial estimation of the event duration: 1/framerate
    qint64 estimatedDuration = event.number<qint32>(0) > 0 ? 1e9 / event.number<qint32>(0) : 1;

    // the profiler registers the animation events at the end of them
    qint64 realEndTime = event.timestamp();

    // ranges should not overlap. If they do, our estimate wasn't accurate enough
    qint64 realStartTime = qMax(event.timestamp() - estimatedDuration,
                                m_minNextStartTimes[lastThread]);

    // Sometimes our estimate is far off or the server has miscalculated the frame rate
    if (realStartTime >= realEndTime)
        realEndTime = realStartTime + 1;

    // Don't "fix" the framerate even if we've fixed the duration.
    // The server should know better after all and if it doesn't we want to see that.
    const Item lastEvent{
        .framerate = event.number<qint32>(0),
        .animationcount = event.number<qint32>(1),
        .typeId = event.typeIndex()};

    m_data.insert(insert(realStartTime, realEndTime - realStartTime, lastThread), lastEvent);

    if (lastThread == GuiThread)
        m_maxGuiThreadAnimations = qMax(lastEvent.animationcount, m_maxGuiThreadAnimations);
    else
        m_maxRenderThreadAnimations = qMax(lastEvent.animationcount,
                                           m_maxRenderThreadAnimations);

    m_minNextStartTimes[lastThread] = event.timestamp() + 1;
}

void QmlProfilerAnimationsModel::finalize()
{
    computeNesting();
    setExpandedRowCount((m_maxGuiThreadAnimations == 0 || m_maxRenderThreadAnimations == 0) ? 2 : 3);
    setCollapsedRowCount(expandedRowCount());
    QmlProfilerTimelineModel::finalize();
}

int QmlProfilerAnimationsModel::rowFromThreadId(int threadId) const
{
    return (threadId == GuiThread || m_maxGuiThreadAnimations == 0) ? 1 : 2;
}

qint64 QmlProfilerAnimationsModel::rowMaxValue(int rowNumber) const
{
    switch (rowNumber) {
    case 1:
        return m_maxGuiThreadAnimations > 0 ? m_maxGuiThreadAnimations : m_maxRenderThreadAnimations;
    case 2:
        return m_maxRenderThreadAnimations;
    default:
        return QmlProfilerTimelineModel::rowMaxValue(rowNumber);
    }
}

int QmlProfilerAnimationsModel::typeId(int index) const
{
    return m_data[index].typeId;
}

int QmlProfilerAnimationsModel::expandedRow(int index) const
{
    return rowFromThreadId(selectionId(index));
}

int QmlProfilerAnimationsModel::collapsedRow(int index) const
{
    return rowFromThreadId(selectionId(index));
}

QRgb QmlProfilerAnimationsModel::color(int index) const
{
    double fpsFraction = m_data[index].framerate / 60.0;
    if (fpsFraction > 1.0)
        fpsFraction = 1.0;
    if (fpsFraction < 0.0)
        fpsFraction = 0.0;
    return colorByFraction(fpsFraction);
}

float QmlProfilerAnimationsModel::relativeHeight(int index) const
{
    return (float)m_data[index].animationcount / (float)(selectionId(index) == GuiThread ?
                                                             m_maxGuiThreadAnimations :
                                                             m_maxRenderThreadAnimations);
}

Timeline::RowLabels QmlProfilerAnimationsModel::labels() const
{
    Timeline::RowLabels result;

    if (m_maxGuiThreadAnimations > 0)
        result.append({Tr::tr("GUI Thread"), GuiThread});

    if (m_maxRenderThreadAnimations > 0)
        result.append({Tr::tr("Render Thread"), RenderThread});

    return result;
}

Timeline::ItemDetails QmlProfilerAnimationsModel::details(int index) const
{
    Timeline::ItemDetails result;

    result.insert(QStringLiteral("displayName"), displayName());
    result.insert(Tr::tr("Duration"), Timeline::formatTime(duration(index)));
    result.insert(Tr::tr("Framerate"), QString::fromLatin1("%1 FPS").arg(m_data[index].framerate));
    result.insert(Tr::tr("Animations"), QString::number(m_data[index].animationcount));
    result.insert(Tr::tr("Context"), selectionId(index) == GuiThread ? Tr::tr("GUI Thread") :
                                                                   Tr::tr("Render Thread"));
    return result;
}

} // namespace Profiler::Internal
