Construction graph improvements (#17960)

Content.Shared/Construction/Serialization/GraphNodeEntitySerializer.cs

@@ -0,0 +1,53 @@
+using Content.Shared.Construction.NodeEntities;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Serialization;
+using Robust.Shared.Serialization.Manager;
+using Robust.Shared.Serialization.Markdown;
+using Robust.Shared.Serialization.Markdown.Mapping;
+using Robust.Shared.Serialization.Markdown.Validation;
+using Robust.Shared.Serialization.Markdown.Value;
+using Robust.Shared.Serialization.TypeSerializers.Interfaces;
+
+namespace Content.Shared.Construction.Serialization;
+
+public sealed class GraphNodeEntitySerializer : ITypeSerializer<IGraphNodeEntity, ValueDataNode>, ITypeSerializer<IGraphNodeEntity, MappingDataNode>
+{
+    public ValidationNode Validate(ISerializationManager serializationManager, ValueDataNode node,
+        IDependencyCollection dependencies, ISerializationContext? context = null)
+    {
+        var id = node.Value;
+
+        var protoMan = dependencies.Resolve<IPrototypeManager>();
+
+        if (!protoMan.HasIndex<EntityPrototype>(id))
+        {
+            return new ErrorNode(node, $"Entity Prototype {id} was not found!");
+        }
+
+        return new ValidatedValueNode(node);
+    }
+
+    public IGraphNodeEntity Read(ISerializationManager serializationManager, ValueDataNode node,
+        IDependencyCollection dependencies, SerializationHookContext hookCtx, ISerializationContext? context = null, ISerializationManager.InstantiationDelegate<IGraphNodeEntity>? instanceProvider = null)
+    {
+        return new StaticNodeEntity(node.Value);
+    }
+
+    public ValidationNode Validate(ISerializationManager serializationManager, MappingDataNode node,
+        IDependencyCollection dependencies, ISerializationContext? context = null)
+    {
+        return serializationManager.ValidateNode<IGraphNodeEntity>(node, context);
+    }
+
+    public IGraphNodeEntity Read(ISerializationManager serializationManager, MappingDataNode node,
+        IDependencyCollection dependencies, SerializationHookContext hookCtx, ISerializationContext? context = null, ISerializationManager.InstantiationDelegate<IGraphNodeEntity>? instanceProvider = null)
+    {
+        return serializationManager.Read(node, hookCtx, context, instanceProvider, false);
+    }
+
+    public DataNode Write(ISerializationManager serializationManager, IGraphNodeEntity value, IDependencyCollection dependencies,
+        bool alwaysWrite = false, ISerializationContext? context = null)
+    {
+        return serializationManager.WriteValue(value, alwaysWrite, context, false);
+    }
+}