// /***************************************************************************
// Aaru Data Preservation Suite
// ----------------------------------------------------------------------------
//
// Filename       : EncodingsViewModel.cs
// Author(s)      : Natalia Portillo <claunia@claunia.com>
//
// Component      : GUI view models.
//
// --[ Description ] ----------------------------------------------------------
//
//     View model and code for the encodings list dialog.
//
// --[ License ] --------------------------------------------------------------
//
//     This program is free software: you can redistribute it and/or modify
//     it under the terms of the GNU General public License as
//     published by the Free Software Foundation, either version 3 of the
//     License, or (at your option) any later version.
//
//     This program is distributed in the hope that it will be useful,
//     but WITHOUT ANY WARRANTY; without even the implied warranty of
//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//     GNU General public License for more details.
//
//     You should have received a copy of the GNU General public License
//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2020 Natalia Portillo
// ****************************************************************************/

using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Reactive;
using System.Text;
using System.Threading.Tasks;
using Aaru.Gui.Models;
using Aaru.Gui.Views.Dialogs;
using JetBrains.Annotations;
using ReactiveUI;

namespace Aaru.Gui.ViewModels.Dialogs
{
    public sealed class EncodingsViewModel : ViewModelBase
    {
        readonly Encodings _view;

        public EncodingsViewModel(Encodings view)
        {
            _view        = view;
            Encodings    = new ObservableCollection<EncodingModel>();
            CloseCommand = ReactiveCommand.Create(ExecuteCloseCommand);

            Task.Run(() =>
            {
                List<EncodingModel> encodings = Encoding.GetEncodings().Select(info => new EncodingModel
                {
                    Name        = info.Name,
                    DisplayName = info.GetEncoding().EncodingName
                }).ToList();

                encodings.AddRange(Claunia.Encoding.Encoding.GetEncodings().Select(info => new EncodingModel
                {
                    Name        = info.Name,
                    DisplayName = info.DisplayName
                }));

                foreach(EncodingModel encoding in encodings.OrderBy(t => t.DisplayName))
                    Encodings.Add(encoding);
            });
        }

        [NotNull]
        public string Title => "Encodings";
        [NotNull]
        public string CloseLabel => "Close";
        public ReactiveCommand<Unit, Unit>         CloseCommand { get; }
        public ObservableCollection<EncodingModel> Encodings    { get; }

        void ExecuteCloseCommand() => _view.Close();
    }
}