﻿// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using System.Collections.Generic;
using System.Linq;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.Editor.EditorConfigSettings.Data;
using Microsoft.VisualStudio.LanguageServices.EditorConfigSettings.Common;

namespace Microsoft.VisualStudio.LanguageServices.EditorConfigSettings.Whitespace.ViewModel
{
    internal class TabSizeViewModel : EnumSettingViewModel<TabSizeSettings>
    {
        private readonly Setting _setting;

        public TabSizeViewModel(Setting setting)
        {
            _setting = setting;
        }

        protected override void ChangePropertyTo(TabSizeSettings newValue)
            => _setting.SetValue((int)newValue);

        protected override TabSizeSettings GetCurrentValue()
        {
            return _setting.GetValue() switch
            {
                1 => TabSizeSettings._1,
                2 => TabSizeSettings._2,
                3 => TabSizeSettings._3,
                4 => TabSizeSettings._4,
                5 => TabSizeSettings._5,
                6 => TabSizeSettings._6,
                7 => TabSizeSettings._7,
                _ => TabSizeSettings._8,
            };
        }

        protected override IReadOnlyDictionary<string, TabSizeSettings> GetValuesAndDescriptions()
        {
            return EnumerateOptions().ToDictionary(x => x.description, x => x.value);

            static IEnumerable<(string description, TabSizeSettings value)> EnumerateOptions()
            {
                yield return ("1", TabSizeSettings._1);
                yield return ("2", TabSizeSettings._2);
                yield return ("3", TabSizeSettings._3);
                yield return ("4", TabSizeSettings._4);
                yield return ("5", TabSizeSettings._5);
                yield return ("6", TabSizeSettings._6);
                yield return ("7", TabSizeSettings._7);
                yield return ("8", TabSizeSettings._8);
            }
        }
    }
}
