namespace HeuristicLab.Problems.ProgramSynthesis.Push.Individual {
  using System.Collections.Generic;

  using HeuristicLab.Core;
  using HeuristicLab.Encodings.IntegerVectorEncoding;
  using HeuristicLab.Optimization;
  using HeuristicLab.Problems.ProgramSynthesis.Push.Configuration;
  using HeuristicLab.Problems.ProgramSynthesis.Push.Expressions;
  using HeuristicLab.Problems.ProgramSynthesis.Push.Generators.CodeGenerator;
  using HeuristicLab.Problems.ProgramSynthesis.Push.SolutionCreator;

  public static class IndividualExtensions {

    public static PushProgram ToPushProgram(this Individual individual, IReadOnlyPushConfiguration config, IRandom random) {
      return individual.IntegerVector().ToPushProgram(config, random);
    }

    public static PushProgram ToPushProgram(this IntegerVector vector, IReadOnlyPushConfiguration config, IRandom random) {
      //var currentIndex = 0;
      //var close = 0;
      var expressions = new List<Expression>(vector.Length);

      for (var i = vector.Length - 1; i >= 0; i--) {
        var index = vector[i];

        if (index == PushSolutionEncoding.End)
          break;

        // skip noops
        if (index == PushSolutionEncoding.Noop)
          continue;

        var expression = CodeGeneratorUtils.MapToExpression(
          index,
          random,
          config.ErcOptions,
          config);

        expressions.Add(expression);
      }

      return new PushProgram(expressions);

      //using (var mapper = IndividualMapper.Create()) {
      //  return mapper.FromPlush(vector, ref currentIndex, ref close, 0, config, random);
      //}
    }
  }
}