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#ifndef SCIQLOP_DATETIMERANGE_H
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#define SCIQLOP_DATETIMERANGE_H
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#include <cmath>
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#include <QObject>
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#include <QDebug>
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#include <opaque/numeric_typedef.hpp>
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#include <Common/DateUtils.h>
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#include <Common/MetaTypes.h>
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#include <Common/Numeric.h>
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template <typename T>
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struct Seconds : opaque::numeric_typedef<T, Seconds<T>> ,
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opaque::binop::multipliable <Seconds<T>, true , Seconds<T>, T, T>,
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opaque::binop::dividable <Seconds<T>, true , Seconds<T>, T, T>,
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opaque::binop::addable <Seconds<T>, true , Seconds<T>, T, T>,
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opaque::binop::subtractable <Seconds<T>, true , Seconds<T>, T, T>
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{
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using base = opaque::numeric_typedef<T, Seconds<T>>;
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using base::base;
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operator T () const {return this->value;}
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};
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struct InvalidDateTimeRangeTransformation{};
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struct DateTimeRangeTransformation
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{
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double zoom;
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Seconds<double> shift;
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bool operator==(const DateTimeRangeTransformation& other) const
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{
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return SciQLop::numeric::almost_equal(zoom, other.zoom, 1) &&
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SciQLop::numeric::almost_equal<double>(shift, other.shift, 1);
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}
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DateTimeRangeTransformation merge(const DateTimeRangeTransformation& other) const
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{
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return DateTimeRangeTransformation{zoom*other.zoom,shift+other.shift};
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}
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};
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/**
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* @brief The SqpRange struct holds the information of time parameters
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*/
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struct DateTimeRange {
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DateTimeRange()
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:m_TStart(std::nan("")), m_TEnd(std::nan(""))
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{}
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DateTimeRange(double TStart, double TEnd)
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:m_TStart(TStart), m_TEnd(TEnd)
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{}
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/// Creates SqpRange from dates and times
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static DateTimeRange fromDateTime(const QDate &startDate, const QTime &startTime,
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const QDate &endDate, const QTime &endTime)
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{
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return {DateUtils::secondsSinceEpoch(QDateTime{startDate, startTime, Qt::UTC}),
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DateUtils::secondsSinceEpoch(QDateTime{endDate, endTime, Qt::UTC})};
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}
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static DateTimeRange fromDateTime(const QDateTime &start, const QDateTime &end)
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{
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return {DateUtils::secondsSinceEpoch(start),
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DateUtils::secondsSinceEpoch(end)};
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}
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/// Start time (UTC)
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double m_TStart;
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/// End time (UTC)
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double m_TEnd;
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Seconds<double> delta()const noexcept{return Seconds<double>{this->m_TEnd - this->m_TStart};}
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bool contains(const DateTimeRange &dateTime) const noexcept
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{
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return (m_TStart <= dateTime.m_TStart && m_TEnd >= dateTime.m_TEnd);
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}
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Seconds<double> center() const noexcept
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{
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return Seconds<double>((m_TStart + m_TEnd) / 2.);
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}
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bool intersect(const DateTimeRange &dateTime) const noexcept
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{
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return (m_TEnd >= dateTime.m_TStart && m_TStart <= dateTime.m_TEnd);
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}
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inline DateTimeRange transform(const DateTimeRangeTransformation& tr)const noexcept;
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bool operator==(const DateTimeRange &other) const
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{
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return SciQLop::numeric::almost_equal(m_TStart, other.m_TStart, 1) &&
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SciQLop::numeric::almost_equal(m_TEnd, other.m_TEnd, 1);
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}
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bool operator!=(const DateTimeRange &other) const { return !(*this == other); }
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void grow(double factor)noexcept
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{
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double grow_v{delta()*(factor - 1.)/2.};
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m_TStart -= grow_v;
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m_TEnd += grow_v;
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}
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void shrink(double factor)noexcept
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{
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double shrink_v{this->delta()*(1. - factor)/2.};
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m_TStart += shrink_v;
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m_TEnd -= shrink_v;
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}
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DateTimeRange& operator*=(double k)
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{
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this->grow(k);
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return *this;
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}
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DateTimeRange& operator/=(double k)
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{
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this->shrink(k);
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return *this;
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}
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// compute set difference
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std::vector<DateTimeRange> operator-(const DateTimeRange& other)const
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{
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std::vector<DateTimeRange> result;
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if(std::isnan(other.m_TStart)||std::isnan(other.m_TEnd)||!this->intersect(other))
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{
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result.emplace_back(m_TStart, m_TEnd);
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}
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else
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{
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if(this->m_TStart<other.m_TStart)
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{
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result.emplace_back(this->m_TStart, other.m_TStart);
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}
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if(this->m_TEnd>other.m_TEnd)
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{
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result.emplace_back(other.m_TEnd, this->m_TEnd);
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}
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}
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return result;
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}
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};
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template <class T>
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DateTimeRange& operator+=(DateTimeRange&r, Seconds<T> offset)
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{
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shift(r,offset);
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return r;
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}
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template <class T>
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DateTimeRange& operator-=(DateTimeRange&r, Seconds<T> offset)
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{
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shift(r,-offset);
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return r;
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}
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template <class T>
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void shift(DateTimeRange& r, Seconds<T> offset)
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{
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r.m_TEnd+=static_cast<double>(offset);
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r.m_TStart+=static_cast<double>(offset);
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}
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inline DateTimeRange operator*(const DateTimeRange& r, double k)
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{
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DateTimeRange result{r};
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result.grow(k);
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return result;
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}
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inline DateTimeRange operator/(const DateTimeRange& r, double k)
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{
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DateTimeRange result{r};
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result.shrink(k);
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return result;
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}
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template<class T>
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DateTimeRange operator+(const DateTimeRange& r, Seconds<T> offset)
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{
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DateTimeRange result{r};
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shift(result,offset);
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return result;
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}
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template<class T>
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DateTimeRange operator-(const DateTimeRange& r, Seconds<T> offset)
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{
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DateTimeRange result{r};
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shift(result,-offset);
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return result;
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}
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const auto INVALID_RANGE
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= DateTimeRange{std::numeric_limits<double>::quiet_NaN(), std::numeric_limits<double>::quiet_NaN()};
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inline QDebug operator<<(QDebug d, DateTimeRange obj)
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{
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auto tendDateTimeStart = DateUtils::dateTime(obj.m_TStart);
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auto tendDateTimeEnd = DateUtils::dateTime(obj.m_TEnd);
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d << "ts: " << tendDateTimeStart << " te: " << tendDateTimeEnd;
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return d;
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}
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DateTimeRange DateTimeRange::transform(const DateTimeRangeTransformation &tr) const noexcept
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{
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return DateTimeRange{*this} * tr.zoom + tr.shift;
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}
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// Required for using shared_ptr in signals/slots
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SCIQLOP_REGISTER_META_TYPE(SQPRANGE_REGISTRY, DateTimeRange)
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#endif // SCIQLOP_DATETIMERANGE_H
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