WIP NuGet API 3.5.0

src/isnd/Controllers/PackagesController.GetVersions.cs

@@ -0,0 +1,37 @@
+using Microsoft.AspNetCore.Mvc;
+using NuGet.Versioning;
+
+namespace isnd.Controllers
+{
+    public partial class PackagesController 
+    {
+        [HttpGet(_pkgRootPrefix + ApiConfig.Get + "/{id}/{lower}/index.json")]
+        public IActionResult GetVersions(
+            string id,
+            string lower,
+            bool prerelease = false,
+            string packageType = null,
+            int skip = 0,
+            int take = 25)
+        {
+            if (take > maxTake)
+            {
+                ModelState.AddModelError("take", "Maximum exceeded");
+            }
+            // NugetVersion
+            if (!NuGetVersion.TryParse(lower, out NuGetVersion parsedVersion))
+            {
+                ModelState.AddModelError("lower", "invalid version string");
+            }
+            if (!ModelState.IsValid)
+            {
+                return BadRequest(ModelState);
+            }
+            return Ok(new
+            {
+                versions = _packageManager.GetVersions(
+                    id, parsedVersion, prerelease, packageType, skip, take)
+            });
+        }
+    }
+}