New: Use ASP.NET Core instead of Nancy

src/Readarr.Api.V1/Author/AuthorLookupController.cs

@@ -0,0 +1,42 @@
+using System.Collections.Generic;
+using System.Linq;
+using Microsoft.AspNetCore.Mvc;
+using NzbDrone.Core.MediaCover;
+using NzbDrone.Core.MetadataSource;
+using Readarr.Http;
+
+namespace Readarr.Api.V1.Author
+{
+    [V1ApiController("author/lookup")]
+    public class AuthorLookupController : Controller
+    {
+        private readonly ISearchForNewAuthor _searchProxy;
+
+        public AuthorLookupController(ISearchForNewAuthor searchProxy)
+        {
+            _searchProxy = searchProxy;
+        }
+
+        [HttpGet]
+        public object Search([FromQuery] string term)
+        {
+            var searchResults = _searchProxy.SearchForNewAuthor(term);
+            return MapToResource(searchResults).ToList();
+        }
+
+        private static IEnumerable<AuthorResource> MapToResource(IEnumerable<NzbDrone.Core.Books.Author> author)
+        {
+            foreach (var currentAuthor in author)
+            {
+                var resource = currentAuthor.ToResource();
+                var poster = currentAuthor.Metadata.Value.Images.FirstOrDefault(c => c.CoverType == MediaCoverTypes.Poster);
+                if (poster != null)
+                {
+                    resource.RemotePoster = poster.Url;
+                }
+
+                yield return resource;
+            }
+        }
+    }
+}