catalog impl

src/isnd/Data/Packages/Package.cs

@@ -2,6 +2,8 @@ using System;
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using isnd.Data.Catalog;
 using isnd.Interfaces;
 using Newtonsoft.Json;
 
@@ -44,5 +46,23 @@ namespace isnd.Data.Packages
 
         public virtual Commit LatestVersion{ get; set; }
         public DateTime CommitTimeStamp { get; set; }
+
+        internal RegistrationLeaf ToLeave()
+        {
+            if (!(Versions != null &&
+            Versions.Count > 0)) throw new Exception("NO VERSION");
+            var v = Versions.First();
+            RegistrationLeaf leave = new RegistrationLeaf
+            {
+                PackageContent = v.NugetLink,
+                Entry = new CatalogEntry
+                {
+                    idp = Id,
+                    version = v.FullString,
+                    authors = $"{Owner.FullName} <${Owner.Email}>"
+                }
+            };
+            return leave;
+        }
     }
 }