// 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;
using System.Composition;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.Host.Mef;
using Microsoft.CodeAnalysis.LanguageServer.Handler.Commands;
using Microsoft.CommonLanguageServerProtocol.Framework;
using Roslyn.LanguageServer.Protocol;
 
namespace Microsoft.CodeAnalysis.LanguageServer.Handler;
 
[ExportCSharpVisualBasicStatelessLspService(typeof(ExecuteWorkspaceCommandHandler)), Shared]
[Method(Methods.WorkspaceExecuteCommandName)]
internal class ExecuteWorkspaceCommandHandler : ILspServiceRequestHandler<ExecuteCommandParams, object?>
{
    public bool MutatesSolutionState => false;
 
    public bool RequiresLSPSolution => true;
 
    [ImportingConstructor]
    [Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
    public ExecuteWorkspaceCommandHandler()
    {
    }
 
    public async Task<object?> HandleRequestAsync(ExecuteCommandParams request, RequestContext context, CancellationToken cancellationToken)
    {
        var handlerProvider = context.GetRequiredService<AbstractHandlerProvider>();
        var lspServices = context.GetRequiredService<ILspServices>();
 
        var requestMethod = AbstractExecuteWorkspaceCommandHandler.GetRequestNameForCommandName(request.Command);
 
        var handler = (AbstractExecuteWorkspaceCommandHandler)handlerProvider.GetMethodHandler(requestMethod, TypeRef.FromOrNull(typeof(ExecuteCommandParams)), TypeRef.FromOrNull(typeof(object)), LanguageServerConstants.DefaultLanguageName);
 
        var result = await handler.HandleRequestAsync(request, context, cancellationToken).ConfigureAwait(false);
 
        return result;
    }
}