// 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.Collections.Immutable;
using System.Composition;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using Microsoft.CodeAnalysis.AddAnonymousTypeMemberName;
using Microsoft.CodeAnalysis.CodeFixes;
using Microsoft.CodeAnalysis.CSharp.Syntax;
 
namespace Microsoft.CodeAnalysis.CSharp.AddAnonymousTypeMemberName
{
    [ExportCodeFixProvider(LanguageNames.CSharp, Name = PredefinedCodeFixProviderNames.AddAnonymousTypeMemberName), Shared]
    internal class CSharpAddAnonymousTypeMemberNameCodeFixProvider
        : AbstractAddAnonymousTypeMemberNameCodeFixProvider<
            ExpressionSyntax,
            AnonymousObjectCreationExpressionSyntax,
            AnonymousObjectMemberDeclaratorSyntax>
    {
        private const string CS0746 = nameof(CS0746); // Invalid anonymous type member declarator. Anonymous type members must be declared with a member assignment, simple name or member access.
 
        [ImportingConstructor]
        [SuppressMessage("RoslynDiagnosticsReliability", "RS0033:Importing constructor should be [Obsolete]", Justification = "Used in test code: https://github.com/dotnet/roslyn/issues/42814")]
        public CSharpAddAnonymousTypeMemberNameCodeFixProvider()
        {
        }
 
        public override ImmutableArray<string> FixableDiagnosticIds { get; }
            = ImmutableArray.Create(CS0746);
 
        protected override bool HasName(AnonymousObjectMemberDeclaratorSyntax declarator)
            => declarator.NameEquals != null;
 
        protected override ExpressionSyntax GetExpression(AnonymousObjectMemberDeclaratorSyntax declarator)
            => declarator.Expression;
 
        protected override AnonymousObjectMemberDeclaratorSyntax WithName(AnonymousObjectMemberDeclaratorSyntax declarator, SyntaxToken name)
            => declarator.WithNameEquals(
                SyntaxFactory.NameEquals(
                    SyntaxFactory.IdentifierName(name)));
 
        protected override IEnumerable<string> GetAnonymousObjectMemberNames(AnonymousObjectCreationExpressionSyntax initializer)
            => initializer.Initializers.Where(i => i.NameEquals != null).Select(i => i.NameEquals!.Name.Identifier.ValueText);
    }
}