Refactor AccentManager to be an entity system, makes accents ECS. (#4825)

Content.Server/Speech/EntitySystems/OwOAccentSystem.cs

@@ -0,0 +1,46 @@
+using System.Collections.Generic;
+using Content.Server.Speech.Components;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Random;
+
+namespace Content.Server.Speech.EntitySystems
+{
+    public class OwOAccentSystem : EntitySystem
+    {
+        [Dependency] private readonly IRobustRandom _random = default!;
+
+        private static readonly IReadOnlyList<string> Faces = new List<string>{
+            " (・`ω´・)", " ;;w;;", " owo", " UwU", " >w<", " ^w^"
+        }.AsReadOnly();
+
+        private static readonly IReadOnlyDictionary<string, string> SpecialWords = new Dictionary<string, string>()
+        {
+            { "you", "wu" },
+        };
+
+        private string RandomFace => _random.Pick(Faces);
+
+        public override void Initialize()
+        {
+            SubscribeLocalEvent<OwOAccentComponent, AccentGetEvent>(OnAccent);
+        }
+
+        public string Accentuate(string message)
+        {
+            foreach (var (word, repl) in SpecialWords)
+            {
+                message = message.Replace(word, repl);
+            }
+
+            return message.Replace("!", RandomFace)
+                .Replace("r", "w").Replace("R", "W")
+                .Replace("l", "w").Replace("L", "W");
+        }
+
+        private void OnAccent(EntityUid uid, OwOAccentComponent component, AccentGetEvent args)
+        {
+            args.Message = Accentuate(args.Message);
+        }
+    }
+}