#include "vector.hh"

#include "state_saver.hh"

Vector::Vector(double x, double y)
    : x_{ x }
    , y_{ y }
{}
double Vector::get_x() const
{
    return x_;
}
double Vector::get_y() const
{
    return y_;
}
Vector& Vector::operator+=(const Vector& rhs)
{
    x_ += rhs.get_x();
    y_ += rhs.get_y();
    return *this;
}
Vector& Vector::operator-=(const Vector& rhs)
{
    x_ -= rhs.get_x();
    y_ -= rhs.get_y();
    return *this;
}
Vector& Vector::operator*=(double scalar)
{
    x_ *= scalar;
    y_ *= scalar;
    return *this;
}
Vector operator+(const Vector& lhs, const Vector& rhs)
{
    Vector lhs1{ lhs };
    return lhs1 += rhs;
}
Vector operator-(const Vector& lhs, const Vector& rhs)
{
    Vector lhs1{ lhs };
    return lhs1 -= rhs;
}
Vector operator*(const Vector& lhs, double scalar)
{
    Vector lhs1{ lhs };
    return lhs1 *= scalar;
}
Vector operator*(double scalar, const Vector& rhs)
{
    return rhs * scalar;
}
double operator*(const Vector& lhs, const Vector& rhs)
{
    return lhs.get_x() * rhs.get_x() + lhs.get_y() * rhs.get_y();
}

FormatNumericalData Vector::format_numerical_data_{ "[ ", " ]", 12, true,
                                                    true };

std::ostream& operator<<(std::ostream& os, const Vector& vec)
{
    StateSaver savestate{ os };
    Vector::format_numerical_data_.formatOs(os);
    os << Vector::format_numerical_data_.prefix << vec.get_x() << " , "
       << vec.get_y() << Vector::format_numerical_data_.suffix;
    return os;
}