using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Diagnostics;

using Miner.Interop;
//1
using Miner.mmSystem;

using Esri.ArcGIS.Geodatabase;
using Esri.ArcGIS.esriSystem;


namespace Miner.DeveloperSamples.Engine
{
  /// <summary>
  /// The ArcFM Engine Login sample enables the user to log into 
  /// an Oracle or SQL Server database.
  /// Currently, there is no support for personal geodatabases.
  /// </summary>
 /// 
 public class EngineLoginObject : System.Windows.Forms.Form, IMMLoginObject, IMMChangeDefaultVersion
 {

  private MMDefaultLoginObjectClass _defaultLoginObject;
  private bool _initialLogin;
  private bool _loginChanged;
  private IPropertySet propertySet;
  
  //ViewerLoginObject Form Variables//

   /// <summary>
   /// Required designer variable.
   /// </summary>
  private System.ComponentModel.Container components = null;

  public EngineLoginObject()
  { 
   
  //Windows Generated Code//

//2
  #region IMMChangeDefaultVersion Members

  public void ChangeDefaultVersion(IVersion pVersion)
  {
   _defaultLoginObject.ChangeDefaultVersion(pVersion);
  }

  #endregion

//3
  #region IMMLoginObject Members

  public bool Login(bool vbInitialLogin)
  {
   _initialLogin = vbInitialLogin;
   this.ShowDialog();
   return _loginChanged;
  }

  public string GetFullTableName(string bstrBaseTableName)
  {
//4
   return _defaultLoginObject.GetFullTableName(bstrBaseTableName);
  }

//5
  private void cmdCancel_Click(object sender, System.EventArgs e)
  {
   if(_defaultLoginObject.IsValidLogin)
   {
    this.Close();
   }
   else
   {
    Process.GetCurrentProcess().Kill();
   }

  }

  private void cmdOK_Click(object sender, System.EventArgs e)
  {
   propertySet = new PropertySetClass();
   System.Windows.Forms.Cursor.Current = Cursors.WaitCursor;

    //Check for valid user name and password
//6
   string userName = txtUser.Text.Trim();
   string password = txtPassword.Text.Trim();
   string server = txtServer.Text.Trim();
   string instance = txtInstance.Text.Trim();
   string database = txtDatabase.Text.Trim();

   if(!ValidateUserPassword(userName, password, server)) 
    return;
   
    //Set server, instance, database
   propertySet.SetProperty("SERVER", server);
   propertySet.SetProperty("INSTANCE", instance);
   propertySet.SetProperty("DATABASE", database);
   propertySet.SetProperty("VERSION", "SDE.DEFAULT");

    //Set user and password
   propertySet.SetProperty("USER", userName);
   propertySet.SetProperty("PASSWORD", password);

    //Try to login using ArcFM's default login object
   _defaultLoginObject.SetConnectionProperties(propertySet);
   _defaultLoginObject.ShowDialog = false;
   _loginChanged = _defaultLoginObject.Login(_initialLogin);

   this.Close();
   
   System.Windows.Forms.Cursor.Current = Cursors.Default;
  }
//7
  public bool IsValidLogin
  {
   get
   {
    return _defaultLoginObject.IsValidLogin;
   }
  }
//8
  public string UserName
  {
   get
   {
    return _defaultLoginObject.UserName;
   }
  }
//9
  public IWorkspace LoginWorkspace
  {
   get
   {
    return _defaultLoginObject.LoginWorkspace;
   }
  }

  #endregion
//10
  private bool ValidateUserPassword(string userName, string password, string server)
  {
   if (userName.Length == 0)
   {
    MessageBox.Show("Enter User Name", "GeneralCaption");
    txtUser.Focus();
    return false;
   }

   if (userName.IndexOf("'") > 0 || userName.IndexOf(" ") > 0 || userName.IndexOf(@"""") > 0)
   {
    MessageBox.Show("Cannot Contain Special Characters", "Dev: ArcFM Engine Login");
    txtUser.Focus();
    return false;
   }

   if (password.Length == 0 && server != "")
   {
    MessageBox.Show("Please Enter Password", "Dev: ArcFM Engine Login");
    txtPassword.Focus();
    return false;
   }

   return true;
  }
//11
  private void ViewerLoginObject_Load(object sender, System.EventArgs e)
  {
   try
   {
    if (txtUser.Text == "")
    {
     this.ActiveControl = txtUser;
    }
    else
    {
     this.ActiveControl = txtPassword;
    }
   }
   catch (Exception exc)
   {
    MessageBox.Show("Error creating login object. " + exc.ToString());
    Process.GetCurrentProcess().Kill();
   }
  }
 }
}