DocumentOrganizer/Diligent.WebAPI.Host/Controllers/V1/CategoriesController.cs

using Microsoft.AspNetCore.Mvc;

namespace Diligent.WebAPI.Host.Controllers.V1
{
    [ApiVersion("1.0")]
    [Route("v{version:apiVersion}/categories")]
    [ApiController]
    public class CategoriesController : ControllerBase
    {
        private readonly ICategoryService _categoryService;

        public CategoriesController(ICategoryService categoryService)
        {
            _categoryService = categoryService;
        }

        [HttpGet("names")]
        public async Task<IActionResult> GetCategoriesNames() =>
            Ok(await _categoryService.GetCategoriesNamesAsync());
    }
}