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

Content.Server/Speech/EntitySystems/SpanishAccentSystem.cs

@@ -0,0 +1,65 @@
+using Content.Server.Speech.Components;
+using Robust.Shared.GameObjects;
+
+namespace Content.Server.Speech.EntitySystems
+{
+    public class SpanishAccentSystem : EntitySystem
+    {
+        public override void Initialize()
+        {
+            SubscribeLocalEvent<SpanishAccentComponent, AccentGetEvent>(OnAccent);
+        }
+
+        public string Accentuate(string message)
+        {
+            // Insert E before every S
+            message = InsertS(message);
+            // If a sentence ends with ?, insert a reverse ? at the beginning of the sentence
+            message = ReplaceQuestionMark(message);
+            return message;
+        }
+
+        private string InsertS(string message)
+        {
+            // Replace every new Word that starts with s/S
+            var msg = message.Replace(" s", " es").Replace(" S", " Es");
+
+            // Still need to check if the beginning of the message starts
+            if (msg.StartsWith("s"))
+            {
+                return msg.Remove(0, 1).Insert(0, "es");
+            }
+            else if (msg.StartsWith("S"))
+            {
+                return msg.Remove(0, 1).Insert(0, "Es");
+            }
+
+            return msg;
+        }
+
+        private string ReplaceQuestionMark(string message)
+        {
+            var sentences = AccentSystem.SentenceRegex.Split(message);
+            var msg = "";
+            foreach (var s in sentences)
+            {
+                if (s.EndsWith("?")) // We've got a question => add ¿ to the beginning
+                {
+                    // Because we don't split by whitespace, we may have some spaces in front of the sentence.
+                    // So we add the symbol before the first non space char
+                    msg += s.Insert(s.Length - s.TrimStart().Length, "¿");
+                }
+                else
+                {
+                    msg += s;
+                }
+            }
+            return msg;
+        }
+
+        private void OnAccent(EntityUid uid, SpanishAccentComponent component, AccentGetEvent args)
+        {
+            args.Message = Accentuate(args.Message);
+        }
+    }
+}