#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.Data.Common;
using System.Data.SqlClient;
using HeuristicLab.DataImporter.DbExplorer.Interfaces;

namespace HeuristicLab.DataImporter.DbExplorer.MsSqlServer {
  public class SqlServerConnection : DbConnectionBase {
    private string constring;

    public SqlServerConnection(string serverName, string databaseName, string userName, string password, bool useWindowsAuthentication)
      : base(databaseName, userName, password) {
      this.serverName = serverName;
      this.useWindowsAuthentication = useWindowsAuthentication;

      this.constring = "Server=" + serverName + "; Initial Catalog=" + databaseName;
      if (useWindowsAuthentication)
        this.constring += @"; Integrated Security=true";
      else
        this.constring += "; User ID=" + userName + "; Password=" + password;
    }

    private string serverName;
    public string ServerName {
      get { return this.serverName; }
      set { this.serverName = value; }
    }

    private bool useWindowsAuthentication;
    public bool UseWindowsAuthentication {
      get { return this.useWindowsAuthentication; }
      set { this.useWindowsAuthentication = value; }
    }

    public override DbConnection CreateConnection() {
      return new SqlConnection(constring);
    }

    public override bool TestConnection() {
      System.Data.Common.DbConnection con = null;
      try {
        con = this.CreateConnection();
        con.Open();
        this.ErrorMessage = "";
        return true;
      }
      catch (SqlException e) {
        this.ErrorMessage = e.Message;
        this.CreateConnection().Close();
        return false;
      }
      finally {
        if (con != null)
          con.Close();
      }
    }
  }
}