namespace SJK.Functional;

public sealed class Left<TLeft, TRight> : IEither<TLeft, TRight>
{
  private readonly TLeft _value;
  public Left(TLeft value){
    this._value = value;
  }


    public IEither<TLeft, T2> Bind<T2>(Func<TRight, IEither<TLeft, T2>> value)
    {
    return new Left<TLeft,T2>(_value);
    }

    public (TLeft?, TRight?) Deconstruct()=>(_value,default(TRight));

  public bool IsRight() => true;

    public IEither<TNewLeft, TRight> MapLeft<TNewLeft>(Func<TLeft, TNewLeft> mapping)
  => new Left<TNewLeft,TRight>(mapping(this._value));

  public IEither<TLeft, TNewRight> MapRight<TNewRight>(Func<TRight, TNewRight> mapping)
  => new Left<TLeft,TNewRight>(this._value);


  public TResult Match<TResult>(Func<TLeft, TResult> left, Func<TRight, TResult> right)
  {
    return left(_value);
    }

  public void Match(Action<TLeft> left, Action<TRight> right)
  {
    left(_value);
    }

    public TLeft Reduce(Func<TRight, TLeft> mapping)=> _value;
    public override string ToString()
    {
        return $"Left<{typeof(TLeft).Name}> with Value {_value}";
    }
}