using System;

using HeuristicLab.Core;
using HeuristicLab.Random;

namespace HeuristicLab.Problems.ProgramSynthesis {

  public class SeededRandomPool {
    public int Seed;
    protected readonly ObjectPool<IRandom> Pool;

    public SeededRandomPool() : this(new System.Random().Next()) { }

    public SeededRandomPool(int seed) : this(seed, () => new FastRandom()) { }

    public SeededRandomPool(int seed, Func<IRandom> randomCreator) {
      Seed = seed;
      Pool = new ObjectPool<IRandom>(randomCreator);
    }

    public IRandom ResetAndAllocate() {
      var random = Pool.Allocate();
      random.Reset(Seed);

      return random;
    }

    public void Free(IRandom random) {
      Pool.Free(random);
    }

    public void Clear() {
      Pool.Clear();
    }
  }
}