using System.Collections.Generic;
using System.Composition;
using System.Linq;

using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CodeFixes;
using Microsoft.CodeAnalysis.CSharp.Syntax;

namespace MiKoSolutions.Analyzers.Rules.Maintainability
{
    [ExportCodeFixProvider(LanguageNames.CSharp, Name = nameof(MiKo_3060_CodeFixProvider)), Shared]
    public sealed class MiKo_3060_CodeFixProvider : MaintainabilityCodeFixProvider
    {
        public override string FixableDiagnosticId => "MiKo_3060";

        protected override SyntaxNode GetSyntax(IEnumerable<SyntaxNode> syntaxNodes) => syntaxNodes.OfType<ExpressionStatementSyntax>().FirstOrDefault();

        protected override SyntaxNode GetUpdatedSyntax(Document document, SyntaxNode syntax, Diagnostic issue) => null; // we want to remove the syntax

        protected override SyntaxNode GetUpdatedSyntaxRoot(Document document, SyntaxNode root, SyntaxNode syntax, SyntaxAnnotation annotationOfSyntax, Diagnostic issue) => root.WithoutUsing("System.Diagnostics"); // remove unused "using System.Diagnostics;"
    }
}