// 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.Immutable;
using System.Composition;
using System.Diagnostics.CodeAnalysis;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.CodeActions;
using Microsoft.CodeAnalysis.CodeFixes;
using Microsoft.CodeAnalysis.CodeFixes.GenerateMember;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.GenerateMember.GenerateEnumMember;
using Microsoft.CodeAnalysis.Shared.Extensions;

namespace Microsoft.CodeAnalysis.CSharp.CodeFixes.GenerateEnumMember;

[ExportCodeFixProvider(LanguageNames.CSharp, Name = PredefinedCodeFixProviderNames.GenerateEnumMember), Shared]
[ExtensionOrder(After = PredefinedCodeFixProviderNames.GenerateConstructor)]
[method: ImportingConstructor]
[method: SuppressMessage("RoslynDiagnosticsReliability", "RS0033:Importing constructor should be [Obsolete]", Justification = "Used in test code: https://github.com/dotnet/roslyn/issues/42814")]
internal sealed class GenerateEnumMemberCodeFixProvider() : AbstractGenerateMemberCodeFixProvider
{
    private const string CS0117 = nameof(CS0117); // error CS0117: 'Color' does not contain a definition for 'Red'
    private const string CS1061 = nameof(CS1061); // error CS1061: 'Color' does not contain a definition for 'Red' and no accessible extension method 'Red' accepting a first argument of type 'Color' could be found

    public override ImmutableArray<string> FixableDiagnosticIds { get; } =
        [CS0117, CS1061];

    protected override Task<ImmutableArray<CodeAction>> GetCodeActionsAsync(Document document, SyntaxNode node, CancellationToken cancellationToken)
    {
        var service = document.GetRequiredLanguageService<IGenerateEnumMemberService>();
        return service.GenerateEnumMemberAsync(document, node, cancellationToken);
    }

    protected override bool IsCandidate(SyntaxNode node, SyntaxToken token, Diagnostic diagnostic)
        => node is IdentifierNameSyntax;
}