using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;
using Tango.BL.Entities;
using Tango.MachineStudio.DB.ViewModels;

namespace Tango.MachineStudio.DB.Converters
{
    /// <summary>
    /// Converts user role to string.
    /// </summary>
    /// <seealso cref="System.Windows.Data.IValueConverter" />
    public class UsersRolesToStringConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value == null) return "";

            if (value is IEnumerable<UsersRole>)
            {
                IEnumerable<UsersRole> userRoles = value as IEnumerable<UsersRole>;
                return String.Join(", ", userRoles.Select(x => x.Role.Name));
            }
            else
            {
                IEnumerable<MultiComboVM<Role>> userRoles = value as IEnumerable<MultiComboVM<Role>>;
                return String.Join(", ", userRoles.Where(x => x.IsSelected).Select(x => x.Entity.Name));
            }
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}