Rename project and namespaces

src/ModelContextProtocol/Protocol/Types/Reference.cs

@@ -0,0 +1,68 @@
+using System.Diagnostics.CodeAnalysis;
+using System.Text.Json.Serialization;
+
+namespace ModelContextProtocol.Protocol.Types;
+
+/// <summary>
+/// Represents a reference to a resource or prompt. Umbrella type for both ResourceReference and PromptReference from the spec schema.
+/// <see href="https://github.com/modelcontextprotocol/specification/blob/main/schema/2024-11-05/schema.json">See the schema for details</see>
+/// </summary>
+public class Reference
+{
+    /// <summary>
+    /// The type of content. Can be ref/resource or ref/prompt.
+    /// </summary>
+    [JsonPropertyName("type")]
+    public string Type { get; set; } = string.Empty;
+
+    /// <summary>
+    /// The URI or URI template of the resource.
+    /// </summary>
+    [JsonPropertyName("uri")]
+    public string? Uri { get; set; }
+
+    /// <summary>
+    /// The name of the prompt or prompt template.
+    /// </summary>
+    [JsonPropertyName("name")]
+    public string? Name { get; set; }
+
+    /// <summary>
+    /// Returns a string representation of the reference.
+    /// </summary>
+    public override string ToString()
+    {
+        return $"\"{Type}\": \"{Uri ?? Name}\"";
+    }
+
+    /// <summary>
+    /// Validates the reference object.
+    /// </summary>
+    public bool Validate([NotNullWhen(false)] out string? validationMessage)
+    {
+        if (Type == "ref/resource")
+        {
+            if (string.IsNullOrEmpty(Uri))
+            {
+                validationMessage = "Uri is required for ref/resource";
+                return false;
+            }
+        }
+        else if (Type == "ref/prompt")
+        {
+            if (string.IsNullOrEmpty(Name))
+            {
+                validationMessage = "Name is required for ref/prompt";
+                return false;
+            }
+        }
+        else
+        {
+            validationMessage = $"Unknown reference type: {Type}";
+            return false;
+        }
+
+        validationMessage = null;
+        return true;
+    }
+}