actually save new repo state

Plogon/BuildProcessor.cs

@@ -1302,20 +1302,16 @@ private BuildResult.ReviewedNeed GetNeedStatus(string key, string version, State
 
     private void CommitReviewedNeeds(IEnumerable<BuildResult.ReviewedNeed> needs)
     {
-        foreach (var need in needs)
-        {
-            if (need.ReviewedBy != null)
-                continue;
-
-            this.pluginRepository.State.ReviewedNeeds.Add(new State.Need
+        this.pluginRepository.AddReviewedNeeds(needs
+            .Where(need => need.ReviewedBy != null)
+            .Select(need => new State.Need
             {
                 Key = need.Name,
                 ReviewedBy = this.actor ?? throw new Exception("Committing, but reviewer is null"),
                 Version = need.Version,
                 ReviewedAt = DateTime.UtcNow,
                 Type = need.Type,
-            });
-        }
+            }));
     }
 
     private static void CopySourceForArchive(DirectoryInfo from, DirectoryInfo to, int depth = 0)

Plogon/Repo/PluginRepository.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 
@@ -148,4 +149,33 @@ public void UpdatePluginHave(string channelName, string plugin, string haveCommi
 
         SaveState();
     }
+
+    /// <summary>
+    /// Add a list of needs to the repository.
+    /// </summary>
+    /// <param name="needs">The needs to add.</param>
+    public void AddReviewedNeeds(IEnumerable<State.Need> needs)
+    {
+        foreach (var need in needs)
+        {
+            AddReviewedNeed(need);
+        }
+
+        this.SaveState();
+    }
+
+    /// <summary>
+    /// Add a need to the repository.
+    /// </summary>
+    /// <param name="need">The need to add.</param>
+    /// <exception cref="Exception">Thrown if the need was already reviewed.</exception>
+    private void AddReviewedNeed(State.Need need)
+    {
+        if (this.State.ReviewedNeeds.Any(x => x.Key == need.Key && x.Version == need.Version))
+        {
+            throw new Exception($"Need {need.Key}(v{need.Version}) already in state");
+        }
+
+        this.State.ReviewedNeeds.Add(need);
+    }
 }