﻿// 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.

#nullable disable

using System.Windows.Media;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.Shared.Extensions;
using Microsoft.VisualStudio.Language.Intellisense;

namespace Microsoft.VisualStudio.LanguageServices.Implementation.Utilities
{
    internal class SymbolViewModel<T> : AbstractNotifyPropertyChanged where T : ISymbol
    {
        private readonly IGlyphService _glyphService;

        public T Symbol { get; }

        private static readonly SymbolDisplayFormat s_symbolDisplayFormat = new(
            genericsOptions: SymbolDisplayGenericsOptions.IncludeTypeParameters,
            memberOptions: SymbolDisplayMemberOptions.IncludeParameters,
            parameterOptions: SymbolDisplayParameterOptions.IncludeType | SymbolDisplayParameterOptions.IncludeParamsRefOut | SymbolDisplayParameterOptions.IncludeOptionalBrackets,
            miscellaneousOptions: SymbolDisplayMiscellaneousOptions.EscapeKeywordIdentifiers | SymbolDisplayMiscellaneousOptions.UseSpecialTypes | SymbolDisplayMiscellaneousOptions.IncludeNullableReferenceTypeModifier);

        private static readonly SymbolDisplayFormat s_symbolAutomationFormat = new(
            genericsOptions: SymbolDisplayGenericsOptions.IncludeTypeParameters,
            memberOptions: SymbolDisplayMemberOptions.IncludeParameters,
            parameterOptions: SymbolDisplayParameterOptions.IncludeType | SymbolDisplayParameterOptions.IncludeParamsRefOut | SymbolDisplayParameterOptions.IncludeOptionalBrackets,
            kindOptions: SymbolDisplayKindOptions.IncludeTypeKeyword,
            miscellaneousOptions: SymbolDisplayMiscellaneousOptions.EscapeKeywordIdentifiers | SymbolDisplayMiscellaneousOptions.UseSpecialTypes | SymbolDisplayMiscellaneousOptions.IncludeNullableReferenceTypeModifier);

        public SymbolViewModel(T symbol, IGlyphService glyphService)
        {
            Symbol = symbol;
            _glyphService = glyphService;
            _isChecked = true;
        }

        private bool _isChecked;
        public bool IsChecked
        {
            get => _isChecked;
            set => SetProperty(ref _isChecked, value);
        }

        public string SymbolName => Symbol.ToDisplayString(s_symbolDisplayFormat);

        public ImageSource Glyph => Symbol.GetGlyph().GetImageSource(_glyphService);

        public string SymbolAutomationText => Symbol.ToDisplayString(s_symbolAutomationFormat);
    }
}
