using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using VEPROMS.CSLA.Library;

[assembly: log4net.Config.XmlConfigurator(Watch = true)]

namespace WinApp
{
	public partial class frmUser : Form
	{
		public frmUser()
		{
			InitializeComponent();
		}
		private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
		private void BeforeFormClosing(object sender, FormClosingEventArgs e)
		{
			e.Cancel = (SaveAsNeeded() == DialogResult.Cancel);
		}
		private User _user;
		private GroupInfoList _gil=GroupInfoList.Get();
		private void frmUser_Load(object sender, EventArgs e)
		{
			userInfoListBindingSource.DataSource = UserInfoList.Get();
			groupInfoListBindingSource.DataSource = _gil;
			SetupDetail();
			SetupButtons();
			log.Info("This is a test");
			//frmMembership f = new frmMembership();
			//f.Show();
			//f.TopMost = true;
		}
		private DialogResult SaveAsNeeded()
		{
			if (_user != null && _user.IsSavable)
			{
				DialogResult dr = MessageBox.Show("Do you want to save changes", "Save Changes", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
				if (dr == DialogResult.Yes) Save();
				if (dr == DialogResult.No) Cancel();
				// TODO: Need a Cancel
				return dr;
			}
			return DialogResult.Yes;
		}
		private void SetupDetail()
		{
			if (lbUsers.SelectedIndex != -1)
			{
				int uid = (int)lbUsers.SelectedValue;
				if (_user == null || _user.UID != uid)
				{
					if (SaveAsNeeded() != DialogResult.Cancel)
					{
						_user = User.Get(uid);
						userBindingSource.DataSource = _user;
						userMembershipsBindingSource.DataSource = _user.UserMemberships;
					}
				}
			}
		}
		private void lbUser_SelectedValueChanged(object sender, EventArgs e)
		{
			SetupDetail();
		}
		private void SetupButtons()
		{
			if (_user != null)
			{
				btnSave.Enabled = _user.IsSavable;
				btnCancel.Enabled = _user.IsDirty;
				btnNew.Enabled = _user.IsValid;
				btnGroups.Enabled = this.userMembershipsDataGridView.SelectedRows.Count > 0;
				btnNewGA.Enabled = _gil.Count > this.userMembershipsDataGridView.Rows.Count;
				btnRemoveGA.Enabled = this.userMembershipsDataGridView.SelectedRows.Count > 0;
			}
			else
			{
				btnSave.Enabled = false;
				btnCancel.Enabled = false;
				btnNew.Enabled = true;
				btnGroups.Enabled = false;
				btnNewGA.Enabled = false;
				btnRemoveGA.Enabled = false;
			}
		}
		private void CurrentItemChanged(object sender, EventArgs e)
		{
			SetupButtons();
		}
		private void btnCancel_Click(object sender, EventArgs e)
		{
			Cancel();
		}
		private void btnSave_Click(object sender, EventArgs e)
		{
			Save();
		}
		private void btnNew_Click(object sender, EventArgs e)
		{
			New();
		}
		private void Cancel()
		{
			_user.CancelEdit();
			//if (_user.IsDirty)
			//{
			//	foreach (UserMembership m in _user.UserMemberships)
			//		if(m.IsDirty)
			//			m.CancelEdit();
			//}
			_user.BeginEdit();
		}
		private void Save()
		{
			userBindingSource.RaiseListChangedEvents = false;
			userMembershipsBindingSource.RaiseListChangedEvents = false;
			userBindingSource.EndEdit();
			userMembershipsBindingSource.EndEdit();

			try
			{
				User temp = _user.Clone();
				_user = temp.Save();
				_user.BeginEdit();
				userBindingSource.DataSource = null;
				userMembershipsBindingSource.DataSource = null;
				int uid = _user.UID;
				userInfoListBindingSource.DataSource = UserInfoList.Get();
				if (lbUsers.SelectedIndex == -1)
					lbUsers.SelectedValue = uid;
				userBindingSource.DataSource = _user;
				userMembershipsBindingSource.DataSource = _user.UserMemberships;
			}
			catch (Csla.DataPortalException ex)
			{
				MessageBox.Show(ex.BusinessException.ToString(),
				"Error saving", MessageBoxButtons.OK,
				MessageBoxIcon.Exclamation);
			}
			catch (Exception ex)
			{
				MessageBox.Show(ex.ToString(), "Error saving",
				MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
			}
			finally
			{
				userBindingSource.RaiseListChangedEvents = true;
				userMembershipsBindingSource.RaiseListChangedEvents = true;
				userBindingSource.ResetBindings(false);
				userMembershipsBindingSource.ResetBindings(false);
			}
			SetupButtons();
		}
		public void New()
		{
			if (SaveAsNeeded() != DialogResult.Cancel)
			{
				_user = User.New();
				userBindingSource.DataSource = _user;
				userMembershipsBindingSource.DataSource = _user.UserMemberships;
				lbUsers.SelectedIndex = -1;
			}
		}

		private void btnGroups_Click(object sender, EventArgs e)
		{
			frmGroups fg = new frmGroups(GetGID());
			fg.ShowDialog();
		}

		private void btnNewGA_Click(object sender, EventArgs e)
		{
			using (frmGroupSelect f = new frmGroupSelect())
			{
				f.ShowDialog();
				if (f.DialogResult == DialogResult.OK)
				{
					_user.UserMemberships.Add(Group.Get(f.GID));   // TODO KBR - using
					SetupButtons();
				}
			}
		}
		private int GetGID()
		{
			return int.Parse(userMembershipsDataGridView.SelectedRows[0].Cells[0].Value.ToString());
		}
		private void btnRemoveGA_Click(object sender, EventArgs e)
		{
			if (this.userMembershipsDataGridView.SelectedRows.Count > 0)
			{
				MessageBox.Show("Conversion Error");
				//TODO: KBR _user.UserMemberships.Remove(GetGID());
			}
		}

		private void userMembershipsDataGridView_SelectionChanged(object sender, EventArgs e)
		{
			SetupButtons();
		}

		private void btnStack_Click(object sender, EventArgs e)
		{
			_user.BeginEdit();
		}

		private void btnPop_Click(object sender, EventArgs e)
		{
			_user.CancelEdit();
		}
	}
}