From 4434b3752c844d6744a7ddee8e958ee3bb31d179 Mon Sep 17 00:00:00 2001
From: GoodWheatley <109803540+GoodWheatley@users.noreply.github.com>
Date: Sat, 1 Apr 2023 17:47:21 -0400
Subject: [PATCH] Chat Filter (April Fools) (#14999)

---
 .../Components/ChatFilterAccentComponent.cs   |  9 ++
 .../EntitySystems/ChatFilterAccentSystem.cs   | 90 +++++++++++++++++++
 Content.Shared/CCVar/CCVars.cs                |  6 ++
 .../Prototypes/Entities/Mobs/Species/base.yml |  1 +
 4 files changed, 106 insertions(+)
 create mode 100644 Content.Server/Speech/Components/ChatFilterAccentComponent.cs
 create mode 100644 Content.Server/Speech/EntitySystems/ChatFilterAccentSystem.cs

diff --git a/Content.Server/Speech/Components/ChatFilterAccentComponent.cs b/Content.Server/Speech/Components/ChatFilterAccentComponent.cs
new file mode 100644
index 0000000000..e2f1a92f0c
--- /dev/null
+++ b/Content.Server/Speech/Components/ChatFilterAccentComponent.cs
@@ -0,0 +1,9 @@
+namespace Content.Server.Speech.Components;
+
+// #####. ##### ### ###. #####? ### #####!
+
+[RegisterComponent]
+public sealed class ChatFilterAccentComponent : Component
+{
+
+}
diff --git a/Content.Server/Speech/EntitySystems/ChatFilterAccentSystem.cs b/Content.Server/Speech/EntitySystems/ChatFilterAccentSystem.cs
new file mode 100644
index 0000000000..89b83e0e1f
--- /dev/null
+++ b/Content.Server/Speech/EntitySystems/ChatFilterAccentSystem.cs
@@ -0,0 +1,90 @@
+using System.Text.RegularExpressions;
+using Content.Server.Speech.Components;
+using Content.Shared.CCVar;
+using Robust.Shared.Configuration;
+
+namespace Content.Server.Speech.EntitySystems;
+
+public sealed class ChatFilterAccentSystem : EntitySystem
+{
+    [Dependency] private readonly IConfigurationManager _cfg = default!;
+
+    private static readonly Dictionary<string, string> DirectReplacements = new()
+    {
+        { "fuck", "####" },
+        { "shit", "####" },
+        { "ass", "###" },
+        { "dick", "####" },
+        { "bitch", "#####" },
+        { "piss", "####" },
+        { "damn", "####" },
+        { "kill", "####" },
+        { "hurt", "####" },
+        { "god", "###" },
+        { "hell", "####" },
+        { "nuke", "####" },
+        { "dang", "####" },
+        { "lol", "###" },
+        { "nukies", "#####" },
+        { "nukie", "#####" },
+        { "gun", "###" },
+        { "ammo", "####" },
+        { "bridge", "#####" },
+        { "med", "###" },
+        { "clown", "#####" },
+        { "admin", "#####" },
+        { "badmin", "######" },
+        { "admeme", "######" },
+        { "badmeme", "######" },
+        { "centcom", "#######" },
+        { "singulo", "#######" },
+        { "singuloose", "##########" },
+        { "sword", "#####" },
+        { "dead", "####" },
+        { "died", "####" },
+        { "sus", "###" },
+        { "aos", "###" },
+        { "kos", "###" },
+        { "anomaly", "#######" },
+        { "shuttle", "#######" },
+        { "hos", "###" },
+        { "drunk", "#####" },
+        { "bar", "###" },
+        { "arrest", "#####" },
+        { "bomb", "####" },
+        { "I", "#" },
+        { "traitor", "#######" },
+        { "tator", "#####" },
+        { "bad", "###" },
+    };
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<ChatFilterAccentComponent, AccentGetEvent>(OnAccentGet);
+    }
+
+    public string Accentuate(string message)
+    {
+        var msg = message;
+
+        if (_cfg.GetCVar(CCVars.GameChatFilter) == true)
+        {
+
+            foreach (var (first, replace) in DirectReplacements)
+            {
+                msg = Regex.Replace(msg, $@"{first}", replace, RegexOptions.IgnoreCase);
+            }
+
+            return msg;
+        }
+
+        return msg;
+    }
+
+    private void OnAccentGet(EntityUid uid, ChatFilterAccentComponent component, AccentGetEvent args)
+    {
+        args.Message = Accentuate(args.Message);
+    }
+}
diff --git a/Content.Shared/CCVar/CCVars.cs b/Content.Shared/CCVar/CCVars.cs
index d589d555e5..b1606def37 100644
--- a/Content.Shared/CCVar/CCVars.cs
+++ b/Content.Shared/CCVar/CCVars.cs
@@ -276,6 +276,12 @@ namespace Content.Shared.CCVar
         public static readonly CVarDef<bool> GameTableBonk =
             CVarDef.Create("game.table_bonk", false, CVar.SERVERONLY);
 
+        /// <summary>
+        /// Enables the Roblox chat filter. True by default.
+        /// </summary>
+        public static readonly CVarDef<bool> GameChatFilter =
+            CVarDef.Create("game.chat_filter", true, CVar.SERVERONLY);
+
 #if EXCEPTION_TOLERANCE
         /// <summary>
         ///     Amount of times round start must fail before the server is shut down.
diff --git a/Resources/Prototypes/Entities/Mobs/Species/base.yml b/Resources/Prototypes/Entities/Mobs/Species/base.yml
index 3c9b8eb85f..94c374e50c 100644
--- a/Resources/Prototypes/Entities/Mobs/Species/base.yml
+++ b/Resources/Prototypes/Entities/Mobs/Species/base.yml
@@ -396,3 +396,4 @@
       interfaces:
         - key: enum.HumanoidMarkingModifierKey.Key # sure, this can go here too
           type: HumanoidMarkingModifierBoundUserInterface
+    - type: ChatFilterAccent