ECS configuration component (#7353)

Content.Server/Configurable/ConfigurationSystem.cs

@@ -0,0 +1,64 @@
+using Content.Server.Tools.Components;
+using Content.Shared.Interaction;
+using Robust.Server.GameObjects;
+using static Content.Shared.Configurable.SharedConfigurationComponent;
+
+namespace Content.Server.Configurable;
+
+public sealed class ConfigurationSystem : EntitySystem
+{
+    [Dependency] private readonly UserInterfaceSystem _uiSystem = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<ConfigurationComponent, ConfigurationUpdatedMessage>(OnUpdate);
+        SubscribeLocalEvent<ConfigurationComponent, ComponentStartup>(OnStartup);
+        SubscribeLocalEvent<ConfigurationComponent, InteractUsingEvent>(OnInteractUsing);
+    }
+    
+    private void OnInteractUsing(EntityUid uid, ConfigurationComponent component, InteractUsingEvent args)
+    {
+        if (args.Handled)
+            return;
+
+        if (!TryComp(args.Used, out ToolComponent? tool) || !tool.Qualities.Contains(component.QualityNeeded))
+            return;
+
+        if (!TryComp(args.User, out ActorComponent? actor))
+            return;
+
+        args.Handled = _uiSystem.TryOpen(uid, ConfigurationUiKey.Key, actor.PlayerSession);
+    }
+
+    private void OnStartup(EntityUid uid, ConfigurationComponent component, ComponentStartup args)
+    {
+        UpdateUi(uid, component);
+    }
+
+    private void UpdateUi(EntityUid uid, ConfigurationComponent component)
+    {
+        if (_uiSystem.TryGetUi(uid, ConfigurationUiKey.Key, out var ui))
+            ui.SetState(new ConfigurationBoundUserInterfaceState(component.Config));
+    }
+
+    private void OnUpdate(EntityUid uid, ConfigurationComponent component, ConfigurationUpdatedMessage args)
+    {
+        foreach (var key in component.Config.Keys)
+        {
+            var value = args.Config.GetValueOrDefault(key);
+
+            if (string.IsNullOrWhiteSpace(value) || component.Validation != null && !component.Validation.IsMatch(value))
+                continue;
+
+            component.Config[key] = value;
+        }
+
+        UpdateUi(uid, component);
+
+        // TODO raise event.
+        // TODO support float (spinbox) and enum (drop-down) configurations
+        // TODO support verbs.
+    }
+}