#pragma once

#include <ostream>

class Vector2
{
    using PointType = long long;

    friend bool operator==(
            const Vector2& lhs,
            const Vector2& rhs
    );

    friend Vector2 operator+(
            Vector2 lhs,
            const Vector2& rhs
    );

    friend Vector2 operator-(
            Vector2 lhs,
            const Vector2& rhs
    );

public:
    Vector2();

    Vector2(
            PointType x,
            PointType y
    );

    PointType x() const;
    PointType y() const;

    PointType& x();
    PointType& y();

    Vector2 operator*(
            const PointType& rhs
    ) const;

    Vector2& operator+=(
            const Vector2& rhs
    );

    Vector2& operator-=(
            const Vector2& rhs
    );

private:
    PointType m_X;
    PointType m_Y;
};

bool operator==(
        const Vector2& lhs,
        const Vector2& rhs
);

bool operator!=(
        const Vector2& lhs,
        const Vector2& rhs
);

Vector2 operator+(
        Vector2 lhs,
        const Vector2& rhs
);

Vector2 operator-(
        Vector2 lhs,
        const Vector2& rhs
);

std::ostream& operator<<(
        std::ostream& os,
        const Vector2& obj
);