Publish Ludarium source

2026-09-03 02:08:58 +02:00
commit df869819ce
339 changed files with 46455 additions and 0 deletions
@@ -0,0 +1,28 @@
+using Ludarium.Domain;
+
+namespace Ludarium.Application;
+
+public sealed class SnapshotComparer : ISnapshotComparer
+{
+    public IReadOnlyList<SnapshotChange> Compare(IntegritySnapshot before, IntegritySnapshot after)
+    {
+        var changes = new List<SnapshotChange>();
+        var beforeByArtifact = before.Items.ToDictionary(x => x.ArtifactId);
+        var afterByArtifact = after.Items.ToDictionary(x => x.ArtifactId);
+        foreach (var oldItem in before.Items)
+        {
+            if (afterByArtifact.TryGetValue(oldItem.ArtifactId, out var current))
+            {
+                if (!oldItem.Sha256.Equals(current.Sha256, StringComparison.OrdinalIgnoreCase))
+                    changes.Add(new(SnapshotChangeKind.ContentChanged, oldItem, current, "The artifact identity is retained but its verified SHA-256 changed."));
+                else if (!oldItem.RelativePath.Equals(current.RelativePath, StringComparison.OrdinalIgnoreCase) || oldItem.LibraryId != current.LibraryId)
+                    changes.Add(new(SnapshotChangeKind.Moved, oldItem, current, "Verified content retained its artifact identity at a new location."));
+                else changes.Add(new(SnapshotChangeKind.Unchanged, oldItem, current, "Path and verified content are unchanged."));
+            }
+            else changes.Add(new(SnapshotChangeKind.Removed, oldItem, null, "The artifact is absent from the later available-root snapshot."));
+        }
+        foreach (var current in after.Items.Where(x => !beforeByArtifact.ContainsKey(x.ArtifactId)))
+            changes.Add(new(SnapshotChangeKind.Added, null, current, "A new artifact appears in the later snapshot."));
+        return changes.OrderBy(x => x.Kind).ThenBy(x => x.After?.RelativePath ?? x.Before?.RelativePath, StringComparer.OrdinalIgnoreCase).ToArray();
+    }
+}