work-flow/src/Workflow.Api/Endpoints/WorkflowDefinition/PublishWorkflowDefinitionEndpoint.cs

using FastEndpoints;
using MediatR;
using Workflow.Application.Features.WorkflowDefinitions.Commands;

namespace Workflow.Api.Endpoints.WorkflowDefinition;

public class PublishWorkflowDefinitionEndpoint : Endpoint<PublishWorkflowDefinitionRequest>
{
    private readonly IMediator _mediator;

    public PublishWorkflowDefinitionEndpoint(IMediator mediator) => _mediator = mediator;

    public override void Configure()
    {
        Post("/workflow-definitions/{Id}/publish");
        AllowAnonymous();
        Summary(s =>
        {
            s.Summary = "Publish a workflow definition";
        });
    }

    public override async Task HandleAsync(PublishWorkflowDefinitionRequest req, CancellationToken ct)
    {
        var command = new PublishWorkflowDefinitionCommand(req.Id);
        await _mediator.Send(command, ct);
        await SendOkAsync(ct);
    }
}

public class PublishWorkflowDefinitionRequest
{
    public Guid Id { get; set; }
}