#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2013 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using System;
using System.Collections.Generic;
using System.Linq;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;

namespace HeuristicLab.DataImporter.DbExplorer.Interfaces {
  [StorableClass]
  public class DbTable {
    [StorableConstructor]
    protected DbTable(bool deserializing)
      : base() {
      this.informationLoaded = new DateTime(1990, 1, 1);
    }

    public DbTable(string ownerName, string tableName)
      : base() {
      this.informationLoaded = new DateTime(1990, 1, 1);
      this.columns = new List<DbColumn>();
      this.ownerName = ownerName;
      this.tableName = tableName;
    }

    [Storable]
    private string ownerName;
    public string OwnerName {
      get { return this.ownerName; }
      set { this.ownerName = value; }
    }

    [Storable]
    private string tableName;
    public string TableName {
      get { return this.tableName; }
      set { this.tableName = value; }
    }

    [Storable]
    private List<DbColumn> columns;
    public IEnumerable<DbColumn> Columns {
      get { return this.columns; }
    }

    public bool IsSelected {
      get { return columns.Any(col => col.Selected); }
    }

    private int affectedRows;
    public int AffectedRows {
      get { return this.affectedRows; }
      set { this.affectedRows = value; }
    }

    private int totalRows;
    public int TotalRows {
      get { return this.totalRows; }
      set { this.totalRows = value; }
    }

    private DateTime informationLoaded;
    public DateTime InformationLoaded {
      get { return this.informationLoaded; }
    }

    public void AddColumn(DbColumn column) {
      this.columns.Add(column);
    }

    public void ClearSelection() {
      foreach (DbColumn col in columns) {
        col.Selected = false;
        col.FilterColumn = false;
        col.LikeValue = "";
      }
    }

    public void SelectAllColumns() {
      foreach (DbColumn col in this.columns)
        col.Selected = true;
    }

    public int SelectedColumnsCount {
      get { return this.columns.Count(col => col.Selected); }
    }

    public IEnumerable<DbColumn> SelectedColumns {
      get { return this.columns.Where(col => col.Selected); }
    }

    public IEnumerable<DbColumn> FilterColumns {
      get { return this.columns.Where(col => col.FilterColumn); }
    }

    public void UpdateInformationLoaded() {
      this.informationLoaded = DateTime.Now;
    }

    public bool ReloadOfInformationNeeded {
      get { return DateTime.Now.Subtract(this.InformationLoaded).Minutes > 5; }
    }

    public override string ToString() {
      string s = this.tableName + "   " + SelectedColumnsCount + "/" + this.columns.Count;
      return s;
    }
  }
}