[@typespec/http-server-csharp] 1.15.0 : generated Program.cs is a MVC one not a WebAPI?

[svaboda-oss]

I'm starting to learn the .NET/API/Typespec ecosystem, so my question is kind of certainly dumb. Why generate MVC Program.cs and not for WebAPI? (in packages/http-server-csharp/src/components/project/program.tsx)

[Jiyon Yu (viys)]

In ASP.NET Core, “MVC” and “Web API” are not separate hosting models. A generated Program.cs that calls AddControllers() and MapControllers() is using the MVC controller infrastructure in API mode; it does not imply that Razor views or server-rendered pages are being generated. The important distinction is whether the generated controllers return API results and whether the project references the Web API-compatible ASP.NET Core packages. If the generated file includes AddControllersWithViews() or view middleware, that would be a stronger sign that the emitter selected the wrong template. Sharing the generated service registration and one controller would make that distinction clear.

[svaboda-oss]

Hello!
Thx for your quick reply...

As a matter of fact, the generated Program.cs includes this:

builder.Services.AddControllersWithViews(options => { options.Filters.Add<HttpServiceExceptionFilter>(); });

And here is one of my generated controller :

`// Generated by @typespec/http-server-csharp
//
#nullable enable

using LodelApi;
using Microsoft.AspNetCore.Mvc;
using System;
using System.Net;
using System.Text.Json;
using System.Text.Json.Nodes;
using System.Text.Json.Serialization;
using System.Threading.Tasks;

namespace LodelApi.Controllers;

[ApiController]
public partial class ResourceApiOperationsController : ControllerBase
{
internal virtual IResourceApiOperations ResourceApiOperationsImpl { get; }
public ResourceApiOperationsController(IResourceApiOperations operations)
{
ResourceApiOperationsImpl = operations;
}

[HttpGet]
[Route("/v1/resources/")]
[ProducesResponseType((int)HttpStatusCode.OK, Type = typeof(ResourceApi.ResourceApiOperationsListAllResponse))]
public virtual async Task<IActionResult> ListAll(
    [FromQuery(Name="inTitle")]
    string? inTitle
)
{
    var result = await ResourceApiOperationsImpl.ListAllAsync(inTitle);
    return Ok(result);
}

}
`