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#include "qmlprofilerprocessedmodel.h"
#include <qmldebug/qmlprofilereventtypes.h>
#include <utils/qtcassert.h>
#include <QUrl>
#include <QDebug>

namespace QmlProfiler {
namespace Internal {

QmlDebug::QmlEventLocation getLocation(const QmlProfilerSimpleModel::QmlEventData &event);
QString getDisplayName(const QmlProfilerSimpleModel::QmlEventData &event);
QString getInitialDetails(const QmlProfilerSimpleModel::QmlEventData &event);

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

QString getDisplayName(const QmlProfilerSimpleModel::QmlEventData &event)
{
    const QmlDebug::QmlEventLocation eventLocation = getLocation(event);
    QString displayName;

    // generate hash
    if (eventLocation.filename.isEmpty()) {
        displayName = QmlProfilerProcessedModel::tr("<bytecode>");
    } else {
        const QString filePath = QUrl(eventLocation.filename).path();
        displayName = filePath.mid(filePath.lastIndexOf(QLatin1Char('/')) + 1) + QLatin1Char(':') +
                QString::number(eventLocation.line);
    }

    return displayName;
}

QString getInitialDetails(const QmlProfilerSimpleModel::QmlEventData &event)
{
    QString details;
    // generate details string
    if (event.data.isEmpty())
        details = QmlProfilerProcessedModel::tr("Source code not available.");
    else {
        details = event.data.join(QLatin1String(" ")).replace(QLatin1Char('\n'),QLatin1Char(' ')).simplified();
        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 = details.mid(details.lastIndexOf(QLatin1Char('/')) + 1);
    }

    return details;
}


bool compareStartTimes(const QmlProfilerSimpleModel::QmlEventData &t1, const QmlProfilerSimpleModel::QmlEventData &t2)
{
    return t1.startTime < t2.startTime;
}

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

QmlProfilerProcessedModel::QmlProfilerProcessedModel(Utils::FileInProjectFinder *fileFinder, QObject *parent)
    : QmlProfilerSimpleModel(parent)
    , m_detailsRewriter(new QmlProfilerDetailsRewriter(this, fileFinder))
    , m_emitChanged(false)
{
    connect(m_detailsRewriter, SIGNAL(rewriteDetailsString(int,QString)),
            this, SLOT(detailsChanged(int,QString)));
    connect(m_detailsRewriter, SIGNAL(eventDetailsChanged()),
            this, SLOT(detailsDone()));
}

QmlProfilerProcessedModel::~QmlProfilerProcessedModel()
{
}

void QmlProfilerProcessedModel::clear()
{
    m_detailsRewriter->clearRequests();

    // This call emits changed(). Don't emit it again here.
    QmlProfilerSimpleModel::clear();

    m_emitChanged = false;
}

void QmlProfilerProcessedModel::complete()
{
    // post-processing

    // sort events by start time
    qSort(eventList.begin(), eventList.end(), compareStartTimes);

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

        //
        // request further details from files
        //

        if (event->eventType != QmlDebug::Binding && event->eventType != 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;

        m_detailsRewriter->requestDetailsForLocation(i, event->location);
    }

    m_detailsRewriter->reloadDocuments();

    // This call emits changed(). Don't emit it again here.
    QmlProfilerSimpleModel::complete();

    m_emitChanged = false;
}

void QmlProfilerProcessedModel::detailsChanged(int requestId, const QString &newString)
{
    QTC_ASSERT(requestId < eventList.count(), return);

    QmlEventData *event = &eventList[requestId];
    event->data = QStringList(newString);

    m_emitChanged = true;
}

void QmlProfilerProcessedModel::detailsDone()
{
    if (m_emitChanged) {
        emit changed();
        m_emitChanged = false;
    }
}

}
}