🧱 Grpc service basis

DysonNetwork.Shared/Data/CloudFileReferenceObject.cs

@@ -1,3 +1,5 @@
+using Google.Protobuf.WellKnownTypes;
+
 namespace DysonNetwork.Shared.Data;
 
 /// <summary>
@@ -14,4 +16,43 @@ public class CloudFileReferenceObject : ModelBase, ICloudFile
     public string? Hash { get; set; }
     public long Size { get; set; }
     public bool HasCompression { get; set; } = false;
+
+    /// <summary>
+    /// Converts the current object to its protobuf representation
+    /// </summary>
+    public global::DysonNetwork.Shared.Proto.CloudFileReferenceObject ToProtoValue()
+    {
+        var proto = new global::DysonNetwork.Shared.Proto.CloudFileReferenceObject
+        {
+            Id = Id,
+            Name = Name,
+            MimeType = MimeType ?? string.Empty,
+            Hash = Hash ?? string.Empty,
+            Size = Size,
+            HasCompression = HasCompression,
+            // Backward compatibility fields
+            ContentType = MimeType ?? string.Empty,
+            Url = string.Empty // This should be set by the caller if needed
+        };
+
+        // Convert file metadata
+        if (FileMeta != null)
+        {
+            foreach (var (key, value) in FileMeta)
+            {
+                proto.FileMeta[key] = Value.ForString(value?.ToString() ?? string.Empty);
+            }
+        }
+
+        // Convert user metadata
+        if (UserMeta != null)
+        {
+            foreach (var (key, value) in UserMeta)
+            {
+                proto.UserMeta[key] = Value.ForString(value?.ToString() ?? string.Empty);
+            }
+        }
+
+        return proto;
+    }
 }