Fix PDA capitalization to be PascalCase (#17335)

Content.Client/PDA/PdaSystem.cs

@@ -0,0 +1,48 @@
+using Content.Shared.PDA;
+using Content.Shared.Light;
+using Robust.Client.GameObjects;
+
+namespace Content.Client.PDA;
+
+public sealed class PdaSystem : SharedPdaSystem
+{
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<PdaComponent, AppearanceChangeEvent>(OnAppearanceChange);
+    }
+
+    private void OnAppearanceChange(EntityUid uid, PdaComponent component, ref AppearanceChangeEvent args)
+    {
+        if (args.Sprite == null)
+            return;
+
+        if (Appearance.TryGetData<bool>(uid, UnpoweredFlashlightVisuals.LightOn, out var isFlashlightOn, args.Component))
+            args.Sprite.LayerSetVisible(PdaVisualLayers.Flashlight, isFlashlightOn);
+
+        if (Appearance.TryGetData<bool>(uid, PdaVisuals.IdCardInserted, out var isCardInserted, args.Component))
+            args.Sprite.LayerSetVisible(PdaVisualLayers.IdLight, isCardInserted);
+    }
+
+    protected override void OnComponentInit(EntityUid uid, PdaComponent component, ComponentInit args)
+    {
+        base.OnComponentInit(uid, component, args);
+
+        if (!TryComp<SpriteComponent>(uid, out var sprite))
+            return;
+
+        if (component.State != null)
+            sprite.LayerSetState(PdaVisualLayers.Base, component.State);
+
+        sprite.LayerSetVisible(PdaVisualLayers.Flashlight, component.FlashlightOn);
+        sprite.LayerSetVisible(PdaVisualLayers.IdLight, component.IdSlot.StartingItem != null);
+    }
+
+    public enum PdaVisualLayers : byte
+    {
+        Base,
+        Flashlight,
+        IdLight
+    }
+}