initial commit

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

events/on_message.py

@@ -0,0 +1,38 @@
+import asyncio,discord
+from discord.ext import commands
+from core.ctx import Ctx
+from core.limiter import Limiter
+async def setup(bot):
+    lim=Limiter()
+    async def run(ctx,st,wait,uid):
+        try:
+            if wait>0:await asyncio.sleep(wait)
+            st.tasks.discard(asyncio.current_task())
+            await bot.invoke(ctx)
+        except asyncio.CancelledError:pass
+        except Exception as e:bot.hook.put(f"dispatch failed for {uid}: {e!r}"[:1900])
+    async def handler(m):
+        if m.author.bot or not m.content.startswith(await bot.get_prefix(m)):return
+        uid=m.author.id
+        if uid!=bot.user.id and uid not in bot.wl:return
+        ctx=await bot.get_context(m,cls=Ctx)
+        if ctx.command is None:return
+        st,wait,full=lim.admit(uid)
+        if full:
+            n=lim.flush(st)
+            bot.hook.put(f"{m.author} ({uid}) flooded, {n} pending commands dropped")
+            try:await m.add_reaction("\u274c")
+            except Exception:pass
+            try:await m.reply(f"too many pending commands, {n} dropped",mention_author=False)
+            except Exception:pass
+            return
+        ctx.limited=wait>0
+        where=f"#{getattr(m.channel,'name',None) or 'dm'} ({m.guild.name if m.guild else 'dm'})"
+        bot.hook.put(f"{m.author} ({uid}) ran `{m.content[:200]}` in {where}")
+        lim.track(uid,st,asyncio.create_task(run(ctx,st,wait,uid)))
+    async def on_command_error(ctx,e):
+        if isinstance(e,(commands.CommandNotFound,commands.CheckFailure)):return
+        bot.hook.put(f"error in `{ctx.command}` by {ctx.author.id}: `{e!r}`"[:1900])
+        try:await ctx.send(f"error: `{e}`"[:1900])
+        except Exception:pass
+    bot.on_message=handler;bot.on_command_error=on_command_error