using System;
using System.Collections.Generic;
using System.Windows.Forms;

using NHibernate;
using TBF.Entities;


namespace TBF.Forms
{
    public partial class EditUsers: Form
    {
        NHibernate.ISession session;
        IList<User> ListOfUsers;
        int LastSelectedIndex;

        public EditUsers()
        {
            InitializeComponent();
        }

        private void EditUsers_Activated(object sender, EventArgs e)
        {
            Cursor.Current = Cursors.WaitCursor;
            session = FluentCommon.CreateSession(Database.Users);
            ListUsers();
            RefreshButtonStates();
        }

        public void ListUsers()
		{
            Cursor.Current = Cursors.WaitCursor;
            
            if (User.CurrentUser.IsMemberOf(Grp.GID.Administrators) || User.CurrentUser.IsMemberOf(Grp.GID.HeadOfLab))
            {
                /// Admin and HeadOfLab can edit all users
                ListOfUsers = session.CreateQuery("FROM User")
					                 .List<User>();
            }
            else
            {
                /// user can only edit their own data
                ListOfUsers = session.CreateQuery("FROM User WHERE id= :CurrentUserId")
					                 .SetParameter("CurrentUserId", User.CurrentUser.Id)
					                 .List<User>();
            }

            listViewUsers.Items.Clear();
            foreach (var person in ListOfUsers)
            {
                ListViewItem item = new ListViewItem(person.Name);
                item.SubItems.Add(person.Id.ToString());
                item.Tag = person;
                this.listViewUsers.Items.Add(item);
            }
            this.listViewUsers.Refresh();

            Cursor.Current = Cursors.Default; 
        }

        private void btnOk_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        
        private void RefreshButtonStates()
		{
            btnEdit.Enabled = (listViewUsers.SelectedItems.Count > 0);
            btnDelete.Enabled = (listViewUsers.SelectedItems.Count >  0);
        }

        private void listViewUsers_SelectedIndexChanged(object sender, EventArgs e)
        {
            RefreshButtonStates();
            if (listViewUsers.SelectedItems.Count > 0)
            {
                LastSelectedIndex = listViewUsers.SelectedItems[0].Index;
            }
            else
			{
                LastSelectedIndex = -1;
            }
        }

        private void btnEdit_Click(object sender, EventArgs e)
        {
            Forms.EditSelectedUser dlg = new Forms.EditSelectedUser();
            dlg.CurrentEditUser = (User)listViewUsers.SelectedItems[0].Tag;
            dlg.Session = session;
            dlg.ShowDialog();
            ListUsers();
        }

        private void listViewUsers_DoubleClick(object sender, EventArgs e)
        {
            btnEdit_Click (sender, e);
        }

        private void btnAdd_Click(object sender, EventArgs e)
        {
            Forms.EditSelectedUser dlg;
            dlg = new Forms.EditSelectedUser();
			dlg.Session = session;
            dlg.CurrentEditUser = new Entities.User();
            dlg.ShowDialog();
            ListUsers();
        }

        private void btnDelete_Click(object sender, EventArgs e)
        {
            Object Selecteduser = listViewUsers.SelectedItems[0].Tag;
            FluentCommon.DeleteFromDb(session, Selecteduser);
            ListUsers();
        }
    }

}