using System;
using System.ComponentModel;
using System.Windows.Forms;
using HeuristicLab.Problems.DataAnalysis;
using HeuristicLab.Problems.Instances.DataAnalysis;

namespace HeuristicLab.ExperimentGeneration.DataAnalysis.ExperimentWizard {
  public partial class ProblemDataPage : HeuristicLab.ExperimentGeneration.DataAnalysis.Wizard.WizardPage {
    private RegressionProblem problem;
    private RegressionCSVInstanceProvider instanceProvider;

    private DataAnalysisWizardContext context;
    public DataAnalysisWizardContext Context {
      get { return context; }
    }

    public ProblemDataPage(DataAnalysisWizardContext context) {
      InitializeComponent();
      this.context = context;
      stringConvertibleMatrixView.ReadOnly = true;
      problem = new RegressionProblem();
      instanceProvider = new RegressionCSVInstanceProvider();
    }

    private void ProblemDataPage_SetActive(object sender, CancelEventArgs e) {
      SetWizardButton(Wizard.WizardButtons.Next);
    }

    private void ProblemDataPage_WizardNext(object sender, Wizard.WizardPageEventArgs e) {
      context.Problem = problem;
    }

    private void btnChooseFile_Click(object sender, System.EventArgs e) {
      OpenFileDialog fileDialog = new OpenFileDialog();
      fileDialog.Filter = "csv files (*.csv)|*.csv|All files (*.*)|*.*";
      if (fileDialog.ShowDialog() == DialogResult.OK) {
        try {
          txtFilePath.Text = fileDialog.FileName;
          IRegressionProblemData problemData = instanceProvider.LoadData(fileDialog.FileName);
          problem.Load(problemData);
          stringConvertibleMatrixView.Content = problem.ProblemData.Dataset;
        }
        catch (Exception ex) {
          MessageBox.Show(String.Format("There was an error parsing the file: {0}", Environment.NewLine + ex.Message), "Error while parsing", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
      }
    }
  }
}