using System;
using System.Linq;
using System.Windows.Forms;
using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.MainForm;
using HeuristicLab.Optimization;
using HeuristicLab.Optimization.Views;
using HeuristicLab.PluginInfrastructure;

namespace HeuristicLab.Problems.MetaOptimization.Views {
  [View("MetaOptimization View")]
  [Content(typeof(MetaOptimizationProblem), IsDefaultView = true)]
  public sealed partial class MetaOptimizationProblemView : ProblemView {
    public new MetaOptimizationProblem Content {
      get { return (MetaOptimizationProblem)base.Content; }
      set { base.Content = value; }
    }

    public MetaOptimizationProblemView() {
      InitializeComponent();
    }

    protected override void DeregisterContentEvents() {
      // TODO: Deregister your event handlers here
      base.DeregisterContentEvents();
    }

    protected override void RegisterContentEvents() {
      base.RegisterContentEvents();
      // TODO: Register your event handlers here
    }

    #region Event Handlers (Content)
    // TODO: Put event handlers of the content here
    #endregion

    protected override void OnContentChanged() {
      base.OnContentChanged();
      if (Content == null) {
        // TODO: Add code when content has been changed and is null
      } else {
        // TODO: Add code when content has been changed and is not null
      }
    }

    protected override void SetEnabledStateOfControls() {
      base.SetEnabledStateOfControls();
      // TODO: Enable or disable controls based on whether the content is null or the view is set readonly
    }

    #region Event Handlers (child controls)

    private void createExperimentButton_Click(object sender, EventArgs e) {
      if (Content != null) {
        long max = 100000;
        long count = Content.ParameterConfigurationTree.GetCombinationCount(max);

        System.Windows.Forms.DialogResult result = System.Windows.Forms.DialogResult.OK;
        if (count > 512) {
          if (count == max) {
            result = System.Windows.Forms.MessageBox.Show(string.Format("Do you really want to create more than {0}+ optimizers? Be aware that this might take a significant amount of time and memory.", count), "Create Experiment", System.Windows.Forms.MessageBoxButtons.OKCancel);
          } else {
            result = System.Windows.Forms.MessageBox.Show(string.Format("Do you really want to create {0} optimizers? Be aware that this might take a significant amount of time and memory.", count), "Create Experiment", System.Windows.Forms.MessageBoxButtons.OKCancel);
          }
        }
        if (result == System.Windows.Forms.DialogResult.OK) {
          CreateExperimentDialog dlg = new CreateExperimentDialog(ApplicationManager.Manager.GetInstances<IEngine>(), typeof(SequentialEngine.SequentialEngine));
          DialogResult dlgResult = dlg.ShowDialog();

          if (dlgResult == DialogResult.OK) {
            var algorithm = (EngineAlgorithm)Content.Algorithm.Clone();
            if(Content.Problems.Count > 0) algorithm.Problem = Content.Problems.First();
            algorithm.Engine = (IEngine)dlg.Engine.Clone();
            Experiment experiment;

            if (dlg.CreateBatchRuns) {
              experiment = Content.ParameterConfigurationTree.GenerateExperiment(algorithm, true, dlg.Repetitions);
            } else {
              experiment = Content.ParameterConfigurationTree.GenerateExperiment(algorithm);
            }
            MainFormManager.MainForm.ShowContent(experiment);
          }
        }
      }
    }

    #endregion

    private void parameterCollectionView_DragEnterOver(object sender, System.Windows.Forms.DragEventArgs e) {
      e.Effect = DragDropEffects.None;
      var type = e.Data.GetData(Constants.DragDropDataFormat).GetType();
      if (!ReadOnly && (Content.AlgorithmType.ValidTypes.Contains(type))) {
        IAlgorithm algorithm = e.Data.GetData(Constants.DragDropDataFormat) as IAlgorithm;
        if (algorithm != null && algorithm.Problem == null || Content.ProblemType.ValidTypes.Contains(algorithm.Problem.GetType())) {
          e.Effect = DragDropEffects.Copy;
        }
      }
    }
    private void parameterCollectionView_DragDrop(object sender, System.Windows.Forms.DragEventArgs e) {
      if (e.Effect != DragDropEffects.None) {
        IAlgorithm algorithm = e.Data.GetData(Constants.DragDropDataFormat) as IAlgorithm;
        Content.ImportAlgorithm(algorithm);
      }
    }
  }
}