#include "Equations.h"
#include <iostream>
#include <cmath>
using std::cout;

Var::Var(float Val, bool Known)
{
    m_Val = Val;
    m_Known = Known;
}

float Var::getVal()
{
    return m_Val;
}

bool Var::Known()
{
    return m_Known;
}


void VfSquared(Var Vf, Var Vi, Var A, Var D)
{
    unsigned short int KnownCount = 0;

    if (Vf.Known())
    {
        KnownCount++;
    }
    if (Vi.Known())
    {
        KnownCount++;
    }
    if (A.Known())
    {
        KnownCount++;
    }
    if (D.Known())
    {
        KnownCount++;
    }

    if (KnownCount > 3)
    {
        cout << "\nError: Not enough known variables\n";
    }

    float Answer = 0;

    if (!Vf.Known())
    {
        if (D.Known())
        {
            Answer = sqrt(Vi.getVal() + (2 * A.getVal() * D.getVal()));

            //Time to show some work
            cout << "\nEquation:\n";
            cout << "Vf^2 = Vi + 2ad\n\n";

            cout << "Vf^2 = " << Vi.getVal() << " + 2(" << A.getVal() << ")(" << D.getVal() << ")\n";
            cout << "Vf^2 = " << Vi.getVal() << " + " << 2 * A.getVal() * D.getVal() << "\n";
            cout << "Vf = " << "sqrt(" << Vi.getVal() + (2 * A.getVal() * D.getVal()) << ")\n";
            cout << "Vf = " << Answer << "\n\n";
        }
    }
}