First Version of Structured Components

MinecraftClient/Protocol/Handlers/StructuredComponents/Core/StructuredComponentRegistry.cs

@@ -0,0 +1,63 @@
+using System;
+using System.Collections.Generic;
+
+namespace MinecraftClient.Protocol.Handlers.StructuredComponents.Core;
+
+public abstract class StructuredComponentRegistry(SubComponentRegistry subComponentRegistry, DataTypes dataTypes)
+{
+    private Dictionary<string, Type> ComponentParsers { get; } = new();
+    private Dictionary<int, string> IdToComponent { get; } = new();
+    private Dictionary<string, int> ComponentToId { get; } = new();
+
+    protected void RegisterComponent<T>(int id, string name) where T : StructuredComponent
+    {
+        if (string.IsNullOrEmpty(name) || string.IsNullOrWhiteSpace(name))
+            throw new ArgumentNullException(nameof(name));
+
+        name = name.ToLower();
+
+        if (ComponentParsers.ContainsKey(name) || IdToComponent.ContainsValue(name)
+                                               || ComponentToId.ContainsKey(name) || IdToComponent.ContainsKey(id))
+            throw new InvalidOperationException($"A component with name '{name}' or id '{id}' is already registered.");
+
+        ComponentParsers[name] = typeof(T);
+        IdToComponent[id] = name;
+        ComponentToId[name] = id;
+    }
+
+    public StructuredComponent ParseComponent(int id, Queue<byte> data)
+    {
+        if (IdToComponent.TryGetValue(id, out var name))
+        {
+            if (ComponentParsers.TryGetValue(name, out var type))
+            {
+                var component =
+                    Activator.CreateInstance(type, dataTypes, subComponentRegistry) as StructuredComponent 
+                    ?? throw new InvalidOperationException($"Could not instantiate a parser for a structured component type {name}");
+                
+                component.Parse(data);
+                return component;
+            }
+        }
+
+        throw new Exception($"No parser found for component with ID {id}");
+    }
+
+    public string GetComponentNameById(int id)
+    {
+        if (IdToComponent.TryGetValue(id, out var value))
+            return value;
+
+        throw new Exception($"No component found for ID {id}");
+    }
+
+    public int GetComponentIdByName(string name)
+    {
+        name = name.ToLower();
+
+        if (ComponentToId.TryGetValue(name, out var value))
+            return value;
+
+        throw new Exception($"No ID found for component {name}");
+    }
+}