genericdatabaseapiservice/OpenAPIDocCtrl.cs.tmpl

using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using System.IO;
using System.Threading.Tasks;

namespace ${env['packagename']}.Controllers {
    [Route("/${env['routeprefix']}/api/openapi/JSON")]
    public class OpenAPIDocCtrl : ControllerBase {
        private IWebHostEnvironment _hostingEnvironment;

        public OpenAPIDocCtrl(IWebHostEnvironment environment) {
            _hostingEnvironment = environment;
        }

        [HttpGet]
        public async Task<IActionResult> Index() {
            return Content(
                await System.IO.File.ReadAllTextAsync(Path.Combine(_hostingEnvironment.WebRootPath, "openapi-original.json")),
                "text/plain"
            );
        }
    }
}