using System;
using System.Linq;
using System.Windows.Forms;
using Tanshu.Accounts.Entities;
using Tanshu.Accounts.Repository;

namespace Tanshu.Accounts.PointOfSale
{
    public partial class UserForm : Form
    {
        User _user;
        public UserForm(Guid? userID)
        {
            InitializeComponent();
            if (userID.HasValue)
                _user = UserBI.Get(userID.Value);
        }

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

        private void btnDelete_Click(object sender, EventArgs e)
        {
            UserBI.Delete(_user.UserID);
            btnCancel_Click(sender, e);
        }

        private void UserForm_Load(object sender, EventArgs e)
        {
            var roles = RoleBI.List();
            clbRoles.DataSource = roles;
            if (_user == null)
                return;
            txtUsername.Text = _user.Name;
            txtPassword.Text = _user.Password;
            txtRetype.Text = _user.Password;
            chkLocked.Checked = _user.LockedOut;

            for (int i = 0; i < clbRoles.Items.Count; i++)
            {
                var item = (Role)clbRoles.Items[i];
                clbRoles.SetItemChecked(i, _user.Roles.Any(x => x.RoleID == item.RoleID));
            }
        }

        private void Save()
        {
            if (_user == null)
                _user = new User();
            else
                _user = UserBI.Get(_user.UserID);

            _user.Name = txtUsername.Text.Trim();
            if (_user.Password != txtPassword.Text.Trim())
                _user.Password = txtPassword.Text.Trim();
            _user.LockedOut = (chkLocked.Checked == true ? true : false);
            _user.Roles = clbRoles.CheckedItems.OfType<Role>().ToList();

            if (_user.UserID == Guid.Empty)
                UserBI.Insert(_user);
            else
                UserBI.Update(_user);
        }

        private void btnSave_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrEmpty(txtUsername.Text.Trim()))
            {
                MessageBox.Show("Username cannot be blank.");
                txtUsername.Focus();
            }
            else if (txtPassword.Text.Trim() != txtRetype.Text.Trim())
            {
                MessageBox.Show("Passwords do not match.");
                txtPassword.Focus();
            }
            else if (_user == null && string.IsNullOrEmpty(txtPassword.Text.Trim()))
            {
                MessageBox.Show("Password cannot be empty.");
                txtPassword.Focus();
            }
            else
            {
                Save();
                this.Close();
            }
        }

        private void clbRoles_Format(object sender, ListControlConvertEventArgs e)
        {
            e.Value = ((Role)e.ListItem).Name;
        }
    }
}