Initial commit

.gitignore

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+# Python cache
+__pycache__/
+*.py[cod]
+*$py.class
+
+# Build / packaging
+build/
+dist/
+*.egg-info/
+.eggs/
+
+# Virtual environments
+.venv/
+venv/
+env/
+
+# Tool caches
+.mypy_cache/
+.pytest_cache/
+.ruff_cache/
+
+# IDE / OS noise
+.idea/
+.vscode/
+.DS_Store
+Thumbs.db
+
+# Runtime artifacts
+*.log

__init__.py

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+from .mentionhelp import MentionHelp
+
+
+async def setup(bot):
+    await bot.add_cog(MentionHelp(bot))

info.json

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+{
+    "name": "mentionhelp",
+    "short": "Replies with prefix and help hint when the bot is mentioned.",
+    "description": "When someone mentions the bot without using a command, the bot replies with its prefix and tells them to use help.",
+    "end_user_data_statement": "This cog does not store end user data."
+}

mentionhelp.py

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+import discord
+from redbot.core import commands
+
+
+class MentionHelp(commands.Cog):
+    def __init__(self, bot):
+        self.bot = bot
+
+    def build_help_embed(self, message, prefix_text, main_prefix):
+        embed = discord.Embed(
+            title="Pomoc",
+            description=(
+                f"Użyj `{main_prefix}help`, aby zobaczyć wszystkie komendy bota."
+            ),
+            color=0xEB459E
+        )
+
+        author_name = str(message.author)
+        author_icon_url = message.author.display_avatar.url if message.author.display_avatar else None
+
+        if author_icon_url:
+            embed.set_author(name=author_name, icon_url=author_icon_url)
+        else:
+            embed.set_author(name=author_name)
+
+        if message.guild:
+            if message.guild.icon:
+                embed.set_thumbnail(url=message.guild.icon.url)
+                embed.set_footer(
+                    text=message.guild.name,
+                    icon_url=message.guild.icon.url
+                )
+            else:
+                embed.set_footer(text=message.guild.name)
+
+        return embed
+
+    @commands.Cog.listener()
+    async def on_message_without_command(self, message):
+        if message.author.bot:
+            return
+
+        if message.guild is None:
+            return
+
+        if self.bot.user is None:
+            return
+
+        mention_forms = {
+            f"<@{self.bot.user.id}>",
+            f"<@!{self.bot.user.id}>"
+        }
+
+        content = message.content.strip()
+
+        if content in mention_forms:
+            prefixes = await self.bot.get_valid_prefixes(message.guild)
+
+            visible_prefixes = [p for p in prefixes if not p.startswith("<@")]
+            main_prefix = visible_prefixes[0] if visible_prefixes else prefixes[0]
+            prefix_text = ", ".join(visible_prefixes) if visible_prefixes else ", ".join(prefixes)
+
+            embed = self.build_help_embed(message, prefix_text, main_prefix)
+            await message.channel.send(embed=embed)