DateTime.h

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#pragma once
#include <aws/crt/Exports.h>
 
#include <aws/crt/Types.h>
 
#include <aws/common/date_time.h>
 
#include <chrono>
 
namespace Aws
{
    namespace Crt
    {
        enum class DateFormat
        {
            RFC822 = AWS_DATE_FORMAT_RFC822,
            ISO_8601 = AWS_DATE_FORMAT_ISO_8601,
            AutoDetect = AWS_DATE_FORMAT_AUTO_DETECT,
        };
 
        enum class Month
        {
            January = AWS_DATE_MONTH_JANUARY,
            February = AWS_DATE_MONTH_FEBRUARY,
            March = AWS_DATE_MONTH_MARCH,
            April = AWS_DATE_MONTH_APRIL,
            May = AWS_DATE_MONTH_MAY,
            June = AWS_DATE_MONTH_JUNE,
            July = AWS_DATE_MONTH_JULY,
            August = AWS_DATE_MONTH_AUGUST,
            September = AWS_DATE_MONTH_SEPTEMBER,
            October = AWS_DATE_MONTH_OCTOBER,
            November = AWS_DATE_MONTH_NOVEMBER,
            December = AWS_DATE_MONTH_DECEMBER,
        };
 
        enum class DayOfWeek
        {
            Sunday = AWS_DATE_DAY_OF_WEEK_SUNDAY,
            Monday = AWS_DATE_DAY_OF_WEEK_MONDAY,
            Tuesday = AWS_DATE_DAY_OF_WEEK_TUESDAY,
            Wednesday = AWS_DATE_DAY_OF_WEEK_WEDNESDAY,
            Thursday = AWS_DATE_DAY_OF_WEEK_THURSDAY,
            Friday = AWS_DATE_DAY_OF_WEEK_FRIDAY,
            Saturday = AWS_DATE_DAY_OF_WEEK_SATURDAY,
        };
 
        class AWS_CRT_CPP_API DateTime final
        {
          public:
            DateTime() noexcept;

            DateTime(const std::chrono::system_clock::time_point &timepointToAssign) noexcept;

            DateTime(uint64_t millisSinceEpoch) noexcept;

            DateTime(double epoch_millis) noexcept;

            DateTime(const char *timestamp, DateFormat format) noexcept;
 
            bool operator==(const DateTime &other) const noexcept;
            bool operator<(const DateTime &other) const noexcept;
            bool operator>(const DateTime &other) const noexcept;
            bool operator!=(const DateTime &other) const noexcept;
            bool operator<=(const DateTime &other) const noexcept;
            bool operator>=(const DateTime &other) const noexcept;
 
            DateTime operator+(const std::chrono::milliseconds &a) const noexcept;
            DateTime operator-(const std::chrono::milliseconds &a) const noexcept;

            DateTime &operator=(double secondsSinceEpoch) noexcept;

            DateTime &operator=(uint64_t millisSinceEpoch) noexcept;

            DateTime &operator=(const std::chrono::system_clock::time_point &timepointToAssign) noexcept;

            DateTime &operator=(const char *timestamp) noexcept;
 
            explicit operator bool() const noexcept;
            int GetLastError() const noexcept;

            bool ToLocalTimeString(DateFormat format, ByteBuf &outputBuf) const noexcept;

            bool ToGmtString(DateFormat format, ByteBuf &outputBuf) const noexcept;

            double SecondsWithMSPrecision() const noexcept;

            uint64_t Millis() const noexcept;

            std::chrono::system_clock::time_point UnderlyingTimestamp() const noexcept;

            uint16_t GetYear(bool localTime = false) const noexcept;

            Month GetMonth(bool localTime = false) const noexcept;

            uint8_t GetDay(bool localTime = false) const noexcept;

            DayOfWeek GetDayOfWeek(bool localTime = false) const noexcept;

            uint8_t GetHour(bool localTime = false) const noexcept;

            uint8_t GetMinute(bool localTime = false) const noexcept;

            uint8_t GetSecond(bool localTime = false) const noexcept;

            bool IsDST(bool localTime = false) const noexcept;

            static DateTime Now() noexcept;

            std::chrono::milliseconds operator-(const DateTime &other) const noexcept;
 
          private:
            aws_date_time m_date_time;
            bool m_good;
        };
    } // namespace Crt
} // namespace Aws