using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using HeuristicLab.Services.Optimization.ControllerService.Interfaces;
using HeuristicLab.Problems.TravelingSalesman;
using System.Reflection;
using System.IO;
using Microsoft.Scripting.Hosting;
using IronPython.Hosting;
using HeuristicLab.Algorithms.GeneticAlgorithm;
using HeuristicLab.Persistence.Core;
using HeuristicLab.Core;

namespace HeuristicLab.Services.Optimization.ControllerService.Tests {
  class Program {
    static void Main(string[] args) {
      Console.WriteLine(AppDomain.CurrentDomain.BaseDirectory);    
      //TestScenarioParser();
      TestCodeDOM();
      //TestPython();
      //TestOtis();
      //TestJobResults();
    }

    static void TestJobResults() {
      IScenarioManager manager = new HiveScenarioManager();
      Console.WriteLine("Press key to continue");
      Console.ReadKey();
      IList<Model.Run> results = manager.GetJobResults(new Model.User() { Password = "fschoeppl", Username = "fschoeppl" }, "cfd0cd8d-76a5-4bf6-bfcb-53fbfe3efe24");
      foreach (var run in results) {
        Console.WriteLine(run);
      }
    }

    static void TestStorable() {
      TravelingSalesmanProblem tsp = new TravelingSalesmanProblem();
      GeneticAlgorithm algo = new GeneticAlgorithm();
      algo.Problem = tsp;

      
    }

    static void TestCodeDOM() {
      ScenarioParser parser = new ScenarioParser();
      var scen = parser.GetByName("Traveling Salesman Problem");
      TravelingSalesmanProblem tsp = new TravelingSalesmanProblem();
      GeneticAlgorithm algo = new GeneticAlgorithm();
      algo.Problem = tsp;

      // http://stackoverflow.com/questions/3188882/compile-and-run-dynamic-code-without-generating-exe
      using (var csCodeProvider = new Microsoft.CSharp.CSharpCodeProvider()) {                

        var cp = new System.CodeDom.Compiler.CompilerParameters() {
            GenerateInMemory = true
          };

        var loadedAssemblies = AppDomain.CurrentDomain.GetAssemblies().ToList();
        var loadedPaths = loadedAssemblies.Select(a => a.Location).ToArray();

        var referencedPaths = Directory.GetFiles(AppDomain.CurrentDomain.BaseDirectory, "*.dll");
        foreach (var loadedAssembly in referencedPaths) {
          cp.ReferencedAssemblies.Add(loadedAssembly);          
        }
        cp.ReferencedAssemblies.Add("System.dll");

        tsp.BestKnownQuality = HLMapper.ConvertToDoubleValue(scen.InputParameters.FindByName("BestKnownQuality"));
        
        var res = csCodeProvider.CompileAssemblyFromSource(
         cp
         ,
          @"using System;
            using System.Collections.Generic;
            using System.Linq;
            using System.Text;
            using HeuristicLab.Data;
            using HeuristicLab.Services.Optimization.ControllerService.Model; 
            using HeuristicLab.Optimization;
            using HeuristicLab.Services.Optimization.ControllerService;
            using HeuristicLab.Algorithms.GeneticAlgorithm;
            using HeuristicLab.Problems.TravelingSalesman;
            public class TSPScenarioMapper : IScenarioMapper {
              public void MapScenario(OptimizationScenario scenario, IAlgorithm algorithm) {
                Console.WriteLine(""Mapping scenario!"");
                var ga = algorithm as GeneticAlgorithm;
                var problem = algorithm.Problem as TravelingSalesmanProblem;
                
                problem.BestKnownQuality = HLMapper.ConvertToDoubleValue(scenario.InputParameters.FindByName(""BestKnownQuality""));
                problem.BestKnownSolution = HLMapper.ConvertToPermutation(scenario.InputParameters.FindByName(""BestKnownSolution""));
                problem.Coordinates = HLMapper.ConvertToDoubleMatrix(scenario.InputParameters.FindByName(""Coordinates""));
                var evalParam = HLMapper.GetStringValue(scenario.InputParameters.FindByName(""EvaluatorParameter""));
                if (evalParam == ""HeuristicLab.Problems.TravelingSalesman.TSPRoundedEuclideanPathEvaluator"") {
                  problem.EvaluatorParameter.Value = new TSPRoundedEuclideanPathEvaluator();
                }
                else if (evalParam == ""HeuristicLab.Problems.TravelingSalesman.TSPGeoPathEvaluator"") {
                  problem.EvaluatorParameter.Value = new TSPGeoPathEvaluator();
                }
                else {
                  problem.EvaluatorParameter.Value = new TSPEuclideanPathEvaluator();
                }
                problem.UseDistanceMatrix = HLMapper.ConvertToBoolValue(scenario.InputParameters.FindByName(""UseDistanceMatrix""));
                Console.WriteLine(""Mapping algorithm..."");
                ga.Mutator = HLMapper.FindInItemSet<HeuristicLab.Optimization.IManipulator>(ga.MutatorParameter.ValidValues, scenario.AlgorithmParameters.FindByName(""Mutator""));
                ga.CrossoverParameter.Value = HLMapper.FindOperator<HeuristicLab.Optimization.ICrossover>(problem, scenario.AlgorithmParameters.FindByName(""CrossoverParameter""));
                ga.Elites = HLMapper.ConvertToIntValue(scenario.AlgorithmParameters.FindByName(""Elites""));
                ga.MaximumGenerations = HLMapper.ConvertToIntValue(scenario.AlgorithmParameters.FindByName(""MaximumGenerations""));
                ga.MutationProbability = HLMapper.ConvertToPercentValue(scenario.AlgorithmParameters.FindByName(""MutationProbability""));                
                ga.PopulationSize = HLMapper.ConvertToIntValue(scenario.AlgorithmParameters.FindByName(""PopulationSize""));
                ga.Seed = HLMapper.ConvertToIntValue(scenario.AlgorithmParameters.FindByName(""Seed""));
                ga.Selector = HLMapper.FindInItemSet<HeuristicLab.Optimization.ISelector>(ga.SelectorParameter.ValidValues, scenario.AlgorithmParameters.FindByName(""Selector""));
                ga.SetSeedRandomly = HLMapper.ConvertToBoolValue(scenario.AlgorithmParameters.FindByName(""SetSeedRandomly""));
              }
            }"
        );        

        foreach (var error in res.Errors) {
          Console.WriteLine(error);
        }        
        
        var type = res.CompiledAssembly.GetType("TSPScenarioMapper");
        var mapper = Activator.CreateInstance(type) as IScenarioMapper;
        mapper.MapScenario(scen, algo);
      }      
    }

    static void TestPython() {
      ScenarioParser parser = new ScenarioParser();
      var scen = parser.GetByName("Traveling Salesman Problem");
      //TravelingSalesmanProblem tsp = new TravelingSalesmanProblem();
      //GeneticAlgorithm algo = new GeneticAlgorithm();
      //algo.Problem = tsp;
      var rt = Python.CreateRuntime();
      // workaround to load all referenced assemblies into the current AppDomain
      var loadedAssemblies = AppDomain.CurrentDomain.GetAssemblies().ToList();
      var loadedPaths = loadedAssemblies.Select(a => a.Location).ToArray();

      var referencedPaths = Directory.GetFiles(AppDomain.CurrentDomain.BaseDirectory, "*.dll");
      var toLoad = referencedPaths.Where(r => !loadedPaths.Contains(r, StringComparer.InvariantCultureIgnoreCase)).ToList();
      toLoad.ForEach(path => loadedAssemblies.Add(AppDomain.CurrentDomain.Load(AssemblyName.GetAssemblyName(path))));

      foreach (var assm in AppDomain.CurrentDomain.GetAssemblies()) {                
        rt.LoadAssembly(assm);  
      }
      
      /*var scope = rt.CreateScope();
      scope.SetVariable("source", scen);
      scope.SetVariable("target", tsp);*/
      var engine = rt.GetEngine("py");
      char op = ' ';
      while (op != 'q') {
        try {
          TravelingSalesmanProblem tsp = new TravelingSalesmanProblem();
          GeneticAlgorithm algo = new GeneticAlgorithm();
          algo.Problem = tsp;
          Console.WriteLine("\n\n===============================================================");
          var script = engine.CreateScriptSourceFromFile(System.Configuration.ConfigurationManager.AppSettings["scenarioPath"] + @"\mapping.py");          
          var scope = engine.CreateScope();
          scope.SetVariable("source", scen);
          scope.SetVariable("problem", tsp);
          scope.SetVariable("algorithm", algo);          
          script.Execute(scope);                    
        }
        catch (Exception e) {
          Console.WriteLine(e);
        }
        Console.WriteLine("Hit 'q' to quit...");
        op = Console.ReadKey().KeyChar;
      }

      /*dynamic script = rt.UseFile("C:/temp/scenarios/mapping.py");
      script.SetVariable("source", scen);
      script.SetVariable("target", tsp);
      

      script.mapObjects(scen, tsp);*/
      
    }

    static void TestOtis() {
      Console.WriteLine();
      Otis.Configuration cfg = new Otis.Configuration();
      Model.DecimalValue dv = new Model.DecimalValue();
      dv.Value = 100;
      Console.WriteLine(dv);
      Console.WriteLine(typeof(HeuristicLab.Data.DoubleValue).AssemblyQualifiedName);
      Console.WriteLine(typeof(System.Double).AssemblyQualifiedName);

      // workaround to load all referenced assemblies into the current AppDomain
      var loadedAssemblies = AppDomain.CurrentDomain.GetAssemblies().ToList();
      var loadedPaths = loadedAssemblies.Select(a => a.Location).ToArray();

      var referencedPaths = Directory.GetFiles(AppDomain.CurrentDomain.BaseDirectory, "*.dll");
      var toLoad = referencedPaths.Where(r => !loadedPaths.Contains(r, StringComparer.InvariantCultureIgnoreCase)).ToList();
      toLoad.ForEach(path => loadedAssemblies.Add(AppDomain.CurrentDomain.Load(AssemblyName.GetAssemblyName(path))));
      
      foreach (var assm in AppDomain.CurrentDomain.GetAssemblies()) {
        //cfg.AddAssembly(assm);
        cfg.AddAssemblyReference(assm);        
      }
      //cfg.AddAssemblyReference("HeuristicLab.Data-3.3, Version=3.3.0.0, Culture=neutral, PublicKeyToken=ba48961d6f65dcec");
      //cfg.AddAssemblyReference("HeuristicLab.Data-3.3.dll");
      cfg.AddXmlFile(System.Configuration.ConfigurationManager.AppSettings["scenarioPath"] + @"\mapping.tsp.xml");

      Otis.IAssembler<TravelingSalesmanProblem,Model.OptimizationScenario> asm = cfg.GetAssembler<TravelingSalesmanProblem,Model.OptimizationScenario>();
      ScenarioParser parser = new ScenarioParser();
      var scen = parser.GetByName("Traveling Salesman Problem");
      TravelingSalesmanProblem tsp = new TravelingSalesmanProblem();
      //tsp.BestKnownQuality = new Data.DoubleValue();
      asm.Assemble(ref tsp, ref scen);
      Console.WriteLine(tsp.BestKnownQuality);      
    }

    static void TestMapping() {
    }

    // template for mapping Model.OptimizationScenario & e.g. TSP
    static void TestScenarioParser() {
      ScenarioParser parser = new ScenarioParser();
      var scen = parser.GetByName("Traveling Salesman Problem");
      TravelingSalesmanProblem tsp = new TravelingSalesmanProblem();
      // proceed with mapping between scen and tsp
    }
  }
}