Selectable Bar Signs (#29068)

* make bar sign selectable

* ajcm strongest soldier

* AJCM comes down hard for round 2

* good shit

* ok ballin

* bless'ed be the webedit

Content.Shared/BarSign/BarSignSystem.cs

@@ -0,0 +1,58 @@
+using System.Linq;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Random;
+
+namespace Content.Shared.BarSign;
+
+public sealed class BarSignSystem : EntitySystem
+{
+    [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
+    [Dependency] private readonly IRobustRandom _random = default!;
+    [Dependency] private readonly MetaDataSystem _metaData = default!;
+
+    public override void Initialize()
+    {
+        SubscribeLocalEvent<BarSignComponent, MapInitEvent>(OnMapInit);
+        Subs.BuiEvents<BarSignComponent>(BarSignUiKey.Key,
+            subs =>
+        {
+            subs.Event<SetBarSignMessage>(OnSetBarSignMessage);
+        });
+    }
+
+    private void OnMapInit(Entity<BarSignComponent> ent, ref MapInitEvent args)
+    {
+        if (ent.Comp.Current != null)
+            return;
+
+        var newPrototype = _random.Pick(GetAllBarSigns(_prototypeManager));
+        SetBarSign(ent, newPrototype);
+    }
+
+    private void OnSetBarSignMessage(Entity<BarSignComponent> ent, ref SetBarSignMessage args)
+    {
+        if (!_prototypeManager.TryIndex(args.Sign, out var signPrototype))
+            return;
+
+        SetBarSign(ent, signPrototype);
+    }
+
+    public void SetBarSign(Entity<BarSignComponent> ent, BarSignPrototype newPrototype)
+    {
+        var meta = MetaData(ent);
+        var name = Loc.GetString(newPrototype.Name);
+        _metaData.SetEntityName(ent, name, meta);
+        _metaData.SetEntityDescription(ent, Loc.GetString(newPrototype.Description), meta);
+
+        ent.Comp.Current = newPrototype.ID;
+        Dirty(ent);
+    }
+
+    public static List<BarSignPrototype> GetAllBarSigns(IPrototypeManager prototypeManager)
+    {
+        return prototypeManager
+            .EnumeratePrototypes<BarSignPrototype>()
+            .Where(p => !p.Hidden)
+            .ToList();
+    }
+}