using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using HeuristicLab.Common;

namespace HeuristicLab.Algorithms.Bandits.Models {
  // uniform distribution [a..b[
  public class UniformModel : IModel {

    private readonly double a;
    private readonly double b;

    public UniformModel(double lower = 0.0, double upper = 1.0) {
      this.a = lower;
      this.b = upper;
    }

    public double Sample(Random random) {
      return random.NextDouble() * (b - a) + a;
    }

    public void Update(double reward) {
      throw new NotSupportedException();
    }

    public void Reset() {
      throw new NotSupportedException();
    }

    public object Clone() {
      return new UniformModel(a, b);
    }

    public override string ToString() {
      return string.Format("U({0:F2},{1:F2})", a, b);
    }
  }
}