using System.Linq;
using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Data;
using HeuristicLab.Operators;
using HeuristicLab.Optimization;
using HeuristicLab.Parameters;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
using System.Collections.Generic;
using System;

namespace HeuristicLab.Problems.MetaOptimization {
  /// <summary>
  /// TODO
  /// </summary>
  [Item("RunsAnalyzer", "")]
  [StorableClass]
  public sealed class RunsAnalyzer : SingleSuccessorOperator, IAnalyzer {

    public ValueLookupParameter<ResultCollection> ResultsParameter {
      get { return (ValueLookupParameter<ResultCollection>)Parameters["Results"]; }
    }
    public ScopeTreeLookupParameter<ParameterConfigurationTree> ParameterConfigurationParameter {
      get { return (ScopeTreeLookupParameter<ParameterConfigurationTree>)Parameters["ParameterConfigurationTree"]; }
    }
    public ScopeTreeLookupParameter<DoubleValue> QualityParameter {
      get { return (ScopeTreeLookupParameter<DoubleValue>)Parameters["Quality"]; }
    }
    public LookupParameter<DoubleArray> ProblemQualityReferenceParameter {
      get { return (LookupParameter<DoubleArray>)Parameters["ProblemQualityReferences"]; }
    }
    public LookupParameter<ConstrainedItemList<IProblem>> ProblemsParameter {
      get { return (LookupParameter<ConstrainedItemList<IProblem>>)Parameters[MetaOptimizationProblem.ProblemsParameterName]; }
    }
    public ValueLookupParameter<ItemDictionary<StringValue, RunCollection>> RunsParameter {
      get { return (ValueLookupParameter<ItemDictionary<StringValue, RunCollection>>)Parameters["Runs"]; }
    }

    public RunsAnalyzer()
      : base() {
      Parameters.Add(new ScopeTreeLookupParameter<DoubleValue>("Quality", ""));
      Parameters.Add(new ValueLookupParameter<ResultCollection>("Results", ""));
      Parameters.Add(new ScopeTreeLookupParameter<ParameterConfigurationTree>("ParameterConfigurationTree", ""));
      Parameters.Add(new LookupParameter<DoubleArray>("ProblemQualityReferences", ""));
      Parameters.Add(new LookupParameter<ConstrainedItemList<IProblem>>(MetaOptimizationProblem.ProblemsParameterName, ""));
      Parameters.Add(new ValueLookupParameter<ItemDictionary<StringValue, RunCollection>>("Runs", "", new ItemDictionary<StringValue, RunCollection>()));
    }

    [StorableConstructor]
    private RunsAnalyzer(bool deserializing) : base(deserializing) { }
    private RunsAnalyzer(RunsAnalyzer original, Cloner cloner) : base(original, cloner) { }
    public override IDeepCloneable Clone(Cloner cloner) {
      return new RunsAnalyzer(this, cloner);
    }

    public override IOperation Apply() {
      ResultCollection results = ResultsParameter.ActualValue;
      ItemArray<ParameterConfigurationTree> solutions = ParameterConfigurationParameter.ActualValue;
      ItemArray<DoubleValue> qualities = QualityParameter.ActualValue;
      ItemDictionary<StringValue, RunCollection> allRuns = RunsParameter.ActualValue;

      foreach (var solution in solutions) {
        string key = solution.ParameterInfoString;
        if (allRuns.Count(x => x.Key.Value == key) == 0) {
          allRuns.Add(new StringValue(key), new RunCollection());
        }

        foreach (var run in solution.Runs) {
          if (!((BoolValue)run.Results["Meta.FromCache"]).Value) {
            run.Results["Meta.FromCache"] = new BoolValue(true);
            allRuns.Single(x => x.Key.Value == key).Value.Add(run);
          }
        }
      }

      if (!results.ContainsKey("Runs")) {
        results.Add(new Result("Runs", allRuns));
      }

      return base.Apply();
    }
  }
}