// 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.Diagnostics;
using Microsoft.CodeAnalysis.Editing;
using Microsoft.CodeAnalysis.Shared.Extensions;

namespace Microsoft.CodeAnalysis.PreferFrameworkType;

[ExportCodeFixProvider(LanguageNames.CSharp, LanguageNames.VisualBasic, Name = PredefinedCodeFixProviderNames.PreferFrameworkType), Shared]
[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 PreferFrameworkTypeCodeFixProvider() : SyntaxEditorBasedCodeFixProvider
{
    public sealed override ImmutableArray<string> FixableDiagnosticIds { get; }
        = [IDEDiagnosticIds.PreferBuiltInOrFrameworkTypeDiagnosticId];

    public override Task RegisterCodeFixesAsync(CodeFixContext context)
    {
        var diagnostic = context.Diagnostics[0];
        if (diagnostic.Properties.ContainsKey(PreferFrameworkTypeConstants.PreferFrameworkType))
        {
            RegisterCodeFix(context, FeaturesResources.Use_framework_type, nameof(FeaturesResources.Use_framework_type));
        }

        return Task.CompletedTask;
    }

    protected override async Task FixAllAsync(
        Document document, ImmutableArray<Diagnostic> diagnostics,
        SyntaxEditor editor, CancellationToken cancellationToken)
    {
        var generator = editor.Generator;
        var semanticModel = await document.GetRequiredSemanticModelAsync(cancellationToken).ConfigureAwait(false);

        foreach (var diagnostic in diagnostics)
        {
            var node = diagnostic.Location.FindNode(
                findInsideTrivia: true, getInnermostNodeForTie: true, cancellationToken);

            if (semanticModel.GetSymbolInfo(node, cancellationToken).Symbol is ITypeSymbol typeSymbol)
            {
                var replacementNode = typeSymbol.SpecialType is SpecialType.System_IntPtr or SpecialType.System_UIntPtr
                    ? generator.QualifiedName(generator.GlobalAliasedName(generator.IdentifierName(nameof(System))), generator.IdentifierName(typeSymbol.Name))
                    : generator.TypeExpression(typeSymbol);
                editor.ReplaceNode(node, replacementNode.WithTriviaFrom(node));
            }
        }
    }

    protected override bool IncludeDiagnosticDuringFixAll(Diagnostic diagnostic)
        => diagnostic.Properties.ContainsKey(PreferFrameworkTypeConstants.PreferFrameworkType);
}