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** Copyright (C) 2016 The Qt Company Ltd.
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** GNU General Public License Usage
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** General Public License version 3 as published by the Free Software
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#pragma once

#include "timelinemodel.h"
#include <functional>

namespace Timeline {

class TIMELINE_EXPORT TimelineModel::TimelineModelPrivate {
public:
    static const int DefaultRowHeight = 30;

    enum BoxColorProperties {
        SelectionIdHueMultiplier = 25,
        FractionHueMultiplier = 96,
        FractionHueMininimum = 10,
        Saturation = 150,
        Lightness = 166
    };

    struct Range {
        Range() : start(-1), duration(-1), selectionId(-1), parent(-1) {}
        Range(qint64 start, qint64 duration, int selectionId) :
            start(start), duration(duration), selectionId(selectionId), parent(-1) {}
        qint64 start;
        qint64 duration;
        int selectionId;
        int parent;
        inline qint64 timestamp() const {return start;}
    };

    struct RangeEnd {
        RangeEnd() : startIndex(-1), end(-1) {}
        RangeEnd(int startIndex, qint64 end) :
            startIndex(startIndex), end(end) {}
        int startIndex;
        qint64 end;
        inline qint64 timestamp() const {return end;}
    };

    TimelineModelPrivate(int modelId);

    int firstIndexNoParents(qint64 startTime) const;

    void incrementStartIndices(int index)
    {
        for (int i = 0; i < endTimes.size(); ++i) {
            if (endTimes[i].startIndex >= index)
                endTimes[i].startIndex++;
        }
    }

    inline int insertStart(const Range &start)
    {
        for (int i = ranges.count();;) {
            if (i == 0) {
                ranges.prepend(start);
                return 0;
            }
            const Range &range = ranges[--i];
            if (range.start < start.start || (range.start == start.start &&
                                              range.duration >= start.duration)) {
                ranges.insert(++i, start);
                return i;
            }
        }
    }

    inline int insertEnd(const RangeEnd &end)
    {
        for (int i = endTimes.count();;) {
            if (i == 0) {
                endTimes.prepend(end);
                return 0;
            }
            if (endTimes[--i].end <= end.end) {
                endTimes.insert(++i, end);
                return i;
            }
        }
    }

    template<typename RangeDelimiter>
    static inline int lowerBound(const QVector<RangeDelimiter> &container, qint64 time)
    {
        int fromIndex = 0;
        int toIndex = container.count() - 1;
        while (toIndex - fromIndex > 1) {
            int midIndex = (fromIndex + toIndex)/2;
            if (container[midIndex].timestamp() < time)
                fromIndex = midIndex;
            else
                toIndex = midIndex;
        }

        return fromIndex;
    }

    int prevItemById(std::function<bool(int)> matchesId, qint64 time, int currentSelected) const;
    int nextItemById(std::function<bool(int)> matchesId, qint64 time, int currentSelected) const;

    QVector<Range> ranges;
    QVector<RangeEnd> endTimes;

    QVector<int> rowOffsets;
    const int modelId;
    QString displayName;

    bool expanded;
    bool hidden;
    int expandedRowCount;
    int collapsedRowCount;
};

} // namespace Timeline
