using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Linq;
using System.Windows.Forms;
using HeuristicLab.OKB.Client;
using HeuristicLab.MainForm;

namespace HeuristicLab.OKB.AlgorithmHost {

  [ViewAttribute("AlgorithmContainer View")]
  [Content(typeof(AlgorithmContainer), true)]
  public partial class AlgorithmContainerView : ParameterizedNamedItemContainerView {

    private Mapping resultMapping;

    public AlgorithmContainerView() {
      resultMapping = new Mapping();
      InitializeComponent();
    }

    public new AlgorithmContainer Content {
      get { return (AlgorithmContainer)base.Content; }
      set { base.Content = value; }
    }

    protected override void OnContentChanged() {
      base.OnContentChanged();
      if (Content == null) {
        resultMapping.Map = null;
      } else {
        resultMapping.Map = Content.ResultMapping;
        resultMappingView.Content = resultMapping;
      }
    }

    private DataTable backgroundLoadedResults = null;

    protected override void backgroundWorker_DoWork(object sender, DoWorkEventArgs e) {
      backgroundWorker.ReportProgress(0);
      var client = ClientFactory.Create<OKBTables.TableServiceClient, OKBTables.ITableService>();
      int count;
      DataTable results = client.PrepareDataTable(out count, "Result");
      results.BeginLoadData();
      DataTable newRows;
      do {
        newRows = client.GetNextRows(100);
        results.Merge(newRows);
      } while (newRows != null && newRows.Rows.Count > 0);
      client.FinishFetchingRows();
      client.Close();
      results.EndLoadData();
      backgroundLoadedResults = results;
      base.backgroundWorker_DoWork(sender, e);
    }

    protected override void backgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) {
      base.backgroundWorker_RunWorkerCompleted(sender, e);
      resultMappingView.Enabled = false;
      if (backgroundLoadedParameters != null) {
        resultMapping.Values.Clear();
        resultMapping.Values.Add(null);
        resultMapping.Values.AddRange(backgroundLoadedResults.Rows.Cast<DataRow>().Select(r => (string)r["Name"]));
        resultMappingView.Enabled = true;
      }
    }

    private void stripButton_Click(object sender, EventArgs e) {
      Content.Strip();
      this.Enabled = false;
    }
  }
}