iface & doi

src/Nyanlabs.Pubresolv/Doi.cs

@@ -11,14 +11,32 @@ public readonly struct Doi
         try
         {
             Prefix = short.Parse(match.Groups["prefix"].Value);
+            if (Prefix > 1000 && Prefix < 10000)
+            {
                 Suffix = match.Groups["suffix"].Value;
             }
+            else
+            {
+                throw new();
+            }
+        }
         catch (Exception)
         {
             throw new ArgumentException($"Invalid DOI string: {doi}");
         }
     }
 
+    public Doi(short prefix, string suffix)
+    {
+        if (prefix > 1000 && prefix < 10000)
+        {
+            Prefix = prefix;
+            Suffix = suffix;
+            return;
+        }
+        throw new ArgumentException($"Invalid prefix: {prefix}");
+    }
+
     public short Prefix { get; }
     public string Suffix { get; }
 

src/Nyanlabs.Pubresolv/IResolver.cs

@@ -1,6 +1,9 @@
+using System.Net;
+
 namespace Nyanlabs.Pubresolv;
 
 public interface IResolver
 {
     public Task Resolve(Doi doi);
+    public Task<bool> Authenticate(ICredentials credentials);
 }