#ifndef TIME_CHART_H
#define TIME_CHART_H

#include <QtCore>

#include "Chart.h"

class TimeChart: public Chart
{
enum TimeUnit
{
    Day = 0,
    Week,
    Month,
    Quarter,
    HalfYear,
    TimeUnitsNum
};

public:
    TimeChart();
    void setDates(const QList<QDateTime>& dates, int period,
        int dataDirection = 1);

private:
    static TimeUnit findTimeUnit(int period);
    static QDate getIntervalStart(const QDate& date, TimeUnit timeUnit);
    static QDate getInterval(const QDate& start, TimeUnit timeUnit,
        int num);
    static QDate getIntervalEnd(const QDate& start, TimeUnit timeUnit);
    static QString getDateLabel(const QDate& date, TimeUnit timeUnit);
    static QString getIntervalFormat(TimeUnit timeUnit);
    static QString getIntervalLabel(const QDate& startDate,
        const QDate& endDate, TimeUnit timeUnit);
    static QDate getQuarterStart(const QDate& date);
    static QDate getHalfYearStart(const QDate& date);
    static int getDataPointsNum(int period, TimeUnit timeUnit);
    static int getTicksInterval(int pointsNum);

private:
    DataPoint createDataPoint(const QDate& thisIntervalStart, TimeUnit timeUnit,
        int intervalIndex);
    int getCardsNumForDate(const QDate& startDate, const QDate& endDate);

private:
    static const QList<int> TimeUnits;
    static const int MaxDataPoints = 28;
    static const int MaxXTicks = 12;

private:
    QList<QDateTime> dates;
};

#endif