#ifndef FREERTOS_CPP_TICKS_HPP
#define FREERTOS_CPP_TICKS_HPP

extern "C"
{
#include "FreeRTOS.h"
#include "task.h"
}

namespace freertos
{

class Ticks final
{
public:
    explicit constexpr Ticks( TickType_t value ) noexcept : value_ { value }
    {
    }

    constexpr TickType_t count() const noexcept
    {
        return value_;
    }

private:
    TickType_t value_;
};

class TickPoint final
{
public:
    explicit constexpr TickPoint( TickType_t value ) noexcept : value_ { value }
    {
    }

    static TickPoint now() noexcept
    {
        return TickPoint { xTaskGetTickCount() };
    }

    constexpr TickType_t count() const noexcept
    {
        return value_;
    }

    friend constexpr Ticks operator-( TickPoint later,
                                      TickPoint earlier ) noexcept
    {
        return Ticks { static_cast< TickType_t >( later.value_ -
                                                  earlier.value_ ) };
    }

private:
    TickType_t value_;
};

} // namespace freertos

#endif