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#include "qmlprofilerdatamodel.h"
#include "qmlprofilerbasemodel_p.h"
#include "qmlprofilermodelmanager.h"
#include <qmldebug/qmlprofilereventtypes.h>
#include <utils/qtcassert.h>
#include <QUrl>
#include <QDebug>
#include <algorithm>

namespace QmlProfiler {

class QmlProfilerDataModel::QmlProfilerDataModelPrivate :
        public QmlProfilerBaseModel::QmlProfilerBaseModelPrivate
{
public:
    QmlProfilerDataModelPrivate(QmlProfilerDataModel *qq) : QmlProfilerBaseModelPrivate(qq) {}
    QVector<QmlEventTypeData> eventTypes;
    QVector<QmlEventData> eventList;
    QHash<QmlEventTypeData, int> eventTypeIds;
private:
    Q_DECLARE_PUBLIC(QmlProfilerDataModel)
};

QString getInitialDetails(const QmlProfilerDataModel::QmlEventTypeData &event);

QmlDebug::QmlEventLocation getLocation(const QmlProfilerDataModel::QmlEventTypeData &event)
{
    QmlDebug::QmlEventLocation eventLocation = event.location;
    if ((event.rangeType == QmlDebug::Creating || event.rangeType == QmlDebug::Compiling)
            && eventLocation.filename.isEmpty()) {
        eventLocation.filename = getInitialDetails(event);
        eventLocation.line = 1;
        eventLocation.column = 1;
    }
    return eventLocation;
}

QString getDisplayName(const QmlProfilerDataModel::QmlEventTypeData &event)
{
    if (event.location.filename.isEmpty()) {
        return QmlProfilerDataModel::tr("<bytecode>");
    } else {
        const QString filePath = QUrl(event.location.filename).path();
        return filePath.mid(filePath.lastIndexOf(QLatin1Char('/')) + 1) + QLatin1Char(':') +
                QString::number(event.location.line);
    }
}

QString getInitialDetails(const QmlProfilerDataModel::QmlEventTypeData &event)
{
    QString details;
    // generate details string
    if (!event.data.isEmpty()) {
        details = event.data;
        details = details.replace(QLatin1Char('\n'),QLatin1Char(' ')).simplified();
        if (details.isEmpty()) {
            if (event.rangeType == QmlDebug::Javascript)
                details = QmlProfilerDataModel::tr("anonymous function");
        } else {
            QRegExp rewrite(QLatin1String("\\(function \\$(\\w+)\\(\\) \\{ (return |)(.+) \\}\\)"));
            bool match = rewrite.exactMatch(details);
            if (match)
                details = rewrite.cap(1) + QLatin1String(": ") + rewrite.cap(3);
            if (details.startsWith(QLatin1String("file://")) ||
                    details.startsWith(QLatin1String("qrc:/")))
                details = details.mid(details.lastIndexOf(QLatin1Char('/')) + 1);
        }
    } else if (event.rangeType == QmlDebug::Painting) {
        // QtQuick1 animations always run in GUI thread.
        details = QmlProfilerDataModel::tr("GUI Thread");
    }

    return details;
}


//////////////////////////////////////////////////////////////////////////////

QmlProfilerDataModel::QmlProfilerDataModel(Utils::FileInProjectFinder *fileFinder,
                                                     QmlProfilerModelManager *parent)
    : QmlProfilerBaseModel(fileFinder, parent, new QmlProfilerDataModelPrivate(this))
{
    Q_D(QmlProfilerDataModel);
    // The document loading is very expensive.
    d->modelManager->setProxyCountWeight(d->modelId, 4);
}

const QVector<QmlProfilerDataModel::QmlEventData> &QmlProfilerDataModel::getEvents() const
{
    Q_D(const QmlProfilerDataModel);
    return d->eventList;
}

const QVector<QmlProfilerDataModel::QmlEventTypeData> &QmlProfilerDataModel::getEventTypes() const
{
    Q_D(const QmlProfilerDataModel);
    return d->eventTypes;
}

int QmlProfilerDataModel::count() const
{
    Q_D(const QmlProfilerDataModel);
    return d->eventList.count();
}

void QmlProfilerDataModel::clear()
{
    Q_D(QmlProfilerDataModel);
    d->eventList.clear();
    d->eventTypes.clear();
    d->eventTypeIds.clear();
    // This call emits changed(). Don't emit it again here.
    QmlProfilerBaseModel::clear();
}

bool QmlProfilerDataModel::isEmpty() const
{
    Q_D(const QmlProfilerDataModel);
    return d->eventList.isEmpty();
}

inline static bool operator<(const QmlProfilerDataModel::QmlEventData &t1,
                             const QmlProfilerDataModel::QmlEventData &t2)
{
    return t1.startTime < t2.startTime;
}

inline static uint qHash(const QmlProfilerDataModel::QmlEventTypeData &type)
{
    return qHash(type.location.filename) ^
            ((type.location.line & 0xfff) |             // 12 bits of line number
            ((type.message << 12) & 0xf000) |           // 4 bits of message
            ((type.location.column << 16) & 0xff0000) | // 8 bits of column
            ((type.rangeType << 24) & 0xf000000) |      // 4 bits of rangeType
            ((type.detailType << 28) & 0xf0000000));    // 4 bits of detailType
}

inline static bool operator==(const QmlProfilerDataModel::QmlEventTypeData &type1,
                              const QmlProfilerDataModel::QmlEventTypeData &type2)
{
    return type1.message == type2.message && type1.rangeType == type2.rangeType &&
            type1.detailType == type2.detailType && type1.location.line == type2.location.line &&
            type1.location.column == type2.location.column &&
            // compare filename last as it's expensive.
            type1.location.filename == type2.location.filename;
}

void QmlProfilerDataModel::complete()
{
    Q_D(QmlProfilerDataModel);
    // post-processing

    // sort events by start time, using above operator<
    std::sort(d->eventList.begin(), d->eventList.end());

    // rewrite strings
    int n = d->eventTypes.count();
    for (int i = 0; i < n; i++) {
        QmlEventTypeData *event = &d->eventTypes[i];
        event->location = getLocation(*event);
        event->displayName = getDisplayName(*event);
        event->data = getInitialDetails(*event);

        //
        // request further details from files
        //

        if (event->rangeType != QmlDebug::Binding && event->rangeType != QmlDebug::HandlingSignal)
            continue;

        // This skips anonymous bindings in Qt4.8 (we don't have valid location data for them)
        if (event->location.filename.isEmpty())
            continue;

        // Skip non-anonymous bindings from Qt4.8 (we already have correct details for them)
        if (event->location.column == -1)
            continue;

        d->detailsRewriter->requestDetailsForLocation(i, event->location);
        d->modelManager->modelProxyCountUpdated(d->modelId, i + n, n * 2);
    }

    // Allow changed() event only after documents have been reloaded to avoid
    // unnecessary updates of child models.
    QmlProfilerBaseModel::complete();
}

void QmlProfilerDataModel::addQmlEvent(QmlDebug::Message message, QmlDebug::RangeType rangeType,
                                            int detailType, qint64 startTime,
                                            qint64 duration, const QString &data,
                                            const QmlDebug::QmlEventLocation &location,
                                            qint64 ndata1, qint64 ndata2, qint64 ndata3,
                                            qint64 ndata4, qint64 ndata5)
{
    Q_D(QmlProfilerDataModel);
    QString displayName;

    QmlEventTypeData typeData = {displayName, location, message, rangeType, detailType, data};
    QmlEventData eventData = {-1, startTime, duration, ndata1, ndata2, ndata3, ndata4, ndata5};

    QHash<QmlEventTypeData, int>::Iterator it = d->eventTypeIds.find(typeData);
    if (it != d->eventTypeIds.end()) {
        eventData.typeIndex = it.value();
    } else {
        eventData.typeIndex = d->eventTypes.size();
        d->eventTypeIds[typeData] = eventData.typeIndex;
        d->eventTypes.append(typeData);
    }

    d->eventList.append(eventData);

    d->modelManager->modelProxyCountUpdated(d->modelId, startTime,
                                            d->modelManager->estimatedProfilingTime() * 2);
}

qint64 QmlProfilerDataModel::lastTimeMark() const
{
    Q_D(const QmlProfilerDataModel);
    if (d->eventList.isEmpty())
        return 0;

    return d->eventList.last().startTime + d->eventList.last().duration;
}

void QmlProfilerDataModel::detailsChanged(int requestId, const QString &newString)
{
    Q_D(QmlProfilerDataModel);
    QTC_ASSERT(requestId < d->eventTypes.count(), return);

    QmlEventTypeData *event = &d->eventTypes[requestId];
    event->data = newString;
}

}