Personalize intro acknowledgements

Author: keepsloading

README.md

@@ -41,6 +41,8 @@ This repository's source code is open source under the MIT license. See
   locks, slowmode, case history, and raid cleanup
 - SQLite-backed case history, warning points, temp-ban scheduling, and server
   config
+- personalized welcome and intro-channel acknowledgement messages so new
+  members do not all get the same canned response
 - native Discord AutoMod rules for spam, mention raids, hate-speech presets,
   and known scam-link patterns
 - local Memact Guard deletion for strong profanity, offensive extremist or

cogs/automod.py

@@ -2,6 +2,7 @@
 
 import asyncio
 from collections import defaultdict, deque
+import re
 import time
 from datetime import datetime, timedelta
 
@@ -42,6 +43,42 @@
     "http://memact.com",
     "http://www.memact.com",
 ]
+INTRO_TOPIC_KEYWORDS: tuple[tuple[str, tuple[str, ...]], ...] = (
+    ("builder/dev", ("app", "bot", "code", "coding", "developer", "javascript", "programming", "python", "tech")),
+    ("creative", ("art", "artist", "design", "drawing", "editing", "music", "photography", "video", "writer")),
+    ("gaming", ("fortnite", "game", "gaming", "minecraft", "roblox", "steam", "valorant")),
+    ("student", ("college", "school", "student", "study", "university")),
+    ("anime/media", ("anime", "manga", "movie", "series", "show")),
+    ("Memact", ("community", "memact", "server")),
+)
+INTRO_ACK_TEMPLATES = (
+    "Welcome, {name}. {detail} Glad to have you in {guild}.",
+    "Appreciate the intro, {name}. {detail} Settle in and make yourself at home.",
+    "{name}, intro received. {detail} You are officially more than just a username here.",
+    "Nice to meet you, {name}. {detail} The server has a little more context now.",
+)
+
+
+def _intro_word_count(content: str) -> int:
+    return len(re.findall(r"[A-Za-z0-9][A-Za-z0-9_'-]*", content))
+
+
+def _contains_intro_keyword(content: str, keyword: str) -> bool:
+    return re.search(rf"(?<![a-z0-9]){re.escape(keyword.casefold())}(?![a-z0-9])", content) is not None
+
+
+def _intro_detail(content: str) -> str:
+    normalized = content.casefold()
+    for label, keywords in INTRO_TOPIC_KEYWORDS:
+        if any(_contains_intro_keyword(normalized, keyword) for keyword in keywords):
+            return f"Noted the {label} angle from your intro."
+
+    word_count = _intro_word_count(content)
+    if word_count >= 45:
+        return "That was a proper intro, not a drive-by hello."
+    if word_count >= 18:
+        return "Clean intro, just enough signal for people to say hi back."
+    return "Short and sweet intro, which still counts."
 
 
 class AutomodCog(commands.Cog):
@@ -298,10 +335,26 @@ async def _acknowledge_intro_message(self, message: nextcord.Message) -> None:
             return
         if not self.bot.db.mark_intro_acknowledgement(message.guild.id, message.author.id, message_id=message.id):
             return
+        display_name = getattr(message.author, "display_name", message.author.name).strip() or message.author.name
+        safe_name = display_name[:40]
+        template = INTRO_ACK_TEMPLATES[(message.author.id + message.id) % len(INTRO_ACK_TEMPLATES)]
+        acknowledgement = template.format(
+            name=safe_name,
+            guild=message.guild.name,
+            detail=_intro_detail(message.clean_content or message.content),
+        )
         try:
             await message.add_reaction("\U0001f44b")
         except (nextcord.Forbidden, nextcord.HTTPException):
             pass
+        try:
+            await message.reply(
+                acknowledgement,
+                mention_author=False,
+                allowed_mentions=nextcord.AllowedMentions.none(),
+            )
+        except (nextcord.Forbidden, nextcord.HTTPException):
+            pass
 
     def _age_hours(self, then: datetime | None) -> float:
         if then is None: