支持 Slack 和 Discord 自动注册命令

app/modules/discord/discord.py

@@ -31,6 +31,8 @@ class Discord:
     Discord Bot 通知与交互实现（基于 discord.py 2.6.4）
     """
 
+    _MAX_SLASH_COMMANDS = 100
+
     def __init__(
         self,
         DISCORD_BOT_TOKEN: Optional[str] = None,
@@ -69,7 +71,7 @@ class Discord:
         self._client: Optional[discord.Client] = discord.Client(
             intents=intents, proxy=settings.PROXY_HOST
         )
-        self._tree: Optional[app_commands.CommandTree] = None
+        self._tree: Optional[app_commands.CommandTree] = app_commands.CommandTree(self._client)
         self._loop: asyncio.AbstractEventLoop = asyncio.new_event_loop()
         self._thread: Optional[threading.Thread] = None
         self._ready_event = threading.Event()
@@ -84,6 +86,7 @@ class Discord:
         self._typing_interval_seconds = 5
         self._typing_initial_delay_seconds = 1
         self._typing_max_duration_seconds = 10 * 60
+        self._registered_commands: Optional[Dict[str, dict]] = None
 
         self._register_events()
         self._start()
@@ -101,6 +104,11 @@ class Discord:
             self._bot_user_id = self._client.user.id if self._client.user else None
             self._ready_event.set()
             logger.info(f"Discord Bot 已登录：{self._client.user}")
+            if self._registered_commands is not None:
+                try:
+                    await self._sync_registered_commands()
+                except Exception as err:
+                    logger.error(f"同步 Discord 斜杠命令失败：{err}")
 
         @self._client.event
         async def on_message(message: discord.Message):
@@ -232,6 +240,169 @@ class Discord:
     def get_state(self) -> bool:
         return self._ready_event.is_set() and self._client is not None
 
+    def register_commands(self, commands: Dict[str, dict]) -> bool:
+        """
+        注册 Discord 斜杠命令。
+
+        :param commands: 命令字典，键为斜杠命令，值包含描述和分类等元数据
+        :return: 是否成功提交同步任务
+        """
+        self._registered_commands = dict(commands or {})
+        return self._schedule_command_sync()
+
+    def delete_commands(self) -> bool:
+        """
+        清理 Discord 斜杠命令。
+
+        :return: 是否成功提交同步任务
+        """
+        self._registered_commands = {}
+        return self._schedule_command_sync()
+
+    def _schedule_command_sync(self) -> bool:
+        """在 Discord 事件循环中提交命令同步任务。"""
+        if not self._tree or not self._loop:
+            return False
+        if not self.get_state():
+            logger.debug("Discord Bot 未就绪，斜杠命令将在登录后同步")
+            return True
+        try:
+            future = asyncio.run_coroutine_threadsafe(
+                self._sync_registered_commands(), self._loop
+            )
+            return bool(future.result(timeout=30))
+        except Exception as err:
+            logger.error(f"同步 Discord 斜杠命令失败：{err}")
+            return False
+
+    async def _sync_registered_commands(self) -> bool:
+        """将当前命令集合同步到 Discord 应用命令树。"""
+        if not self._tree or not self._client:
+            return False
+        if not self._client.is_ready():
+            await self._client.wait_until_ready()
+
+        guild = discord.Object(id=self._guild_id) if self._guild_id else None
+        self._tree.clear_commands(guild=guild)
+
+        commands = self._registered_commands or {}
+        registered_count = 0
+        seen_names = set()
+        for command_text, command_data in commands.items():
+            if registered_count >= self._MAX_SLASH_COMMANDS:
+                logger.warning(
+                    f"Discord 斜杠命令数量超过 {self._MAX_SLASH_COMMANDS} 个，后续命令已跳过"
+                )
+                break
+            command_name = self._normalize_slash_command_name(command_text)
+            if not command_name or command_name in seen_names:
+                logger.warning(f"跳过无效或重复的 Discord 斜杠命令：{command_text}")
+                continue
+            seen_names.add(command_name)
+            description = self._normalize_slash_command_description(
+                command_data.get("description") if isinstance(command_data, dict) else None,
+                command_name,
+            )
+            self._tree.add_command(
+                self._build_slash_command(command_text, command_name, description),
+                guild=guild,
+                override=True,
+            )
+            registered_count += 1
+
+        synced_commands = await self._tree.sync(guild=guild)
+        logger.info(f"Discord 斜杠命令已同步：{len(synced_commands)} 个")
+        return True
+
+    @staticmethod
+    def _normalize_slash_command_name(command_text: str) -> str:
+        """转换为 Discord 允许的斜杠命令名称。"""
+        command_name = str(command_text or "").strip().lstrip("/").lower()
+        if not re.fullmatch(r"[a-z0-9_-]{1,32}", command_name):
+            return ""
+        return command_name
+
+    @staticmethod
+    def _normalize_slash_command_description(
+        description: Optional[str],
+        fallback: str,
+    ) -> str:
+        """整理 Discord 斜杠命令描述，满足长度要求。"""
+        normalized = str(description or fallback or "MoviePilot").strip()
+        return normalized[:100] or "MoviePilot"
+
+    def _build_slash_command(
+        self,
+        command_text: str,
+        command_name: str,
+        description: str,
+    ) -> app_commands.Command:
+        """构建 Discord 斜杠命令对象。"""
+
+        async def _callback(
+            interaction: discord.Interaction,
+            args: Optional[str] = None,
+        ) -> None:
+            await self._handle_slash_command(interaction, command_text, args)
+
+        _callback.__name__ = f"moviepilot_{command_name}"
+        _callback = app_commands.describe(args="命令参数")(_callback)
+        return app_commands.Command(
+            name=command_name,
+            description=description,
+            callback=_callback,
+        )
+
+    async def _handle_slash_command(
+        self,
+        interaction: discord.Interaction,
+        command_text: str,
+        args: Optional[str] = None,
+    ) -> None:
+        """处理 Discord 斜杠命令回调，并转发到统一消息入口。"""
+        try:
+            await interaction.response.defer(ephemeral=True, thinking=True)
+        except Exception as err:
+            logger.debug(f"延迟响应 Discord 斜杠命令失败：{err}")
+
+        userid = str(interaction.user.id) if interaction.user else None
+        chat_id = str(interaction.channel.id) if interaction.channel else None
+        username = None
+        if interaction.user:
+            username = (
+                getattr(interaction.user, "display_name", None)
+                or getattr(interaction.user, "global_name", None)
+                or getattr(interaction.user, "name", None)
+            )
+        if userid and chat_id:
+            self._update_user_chat_mapping(userid, chat_id)
+
+        arg_text = str(args or "").strip()
+        payload = {
+            "type": "message",
+            "userid": userid,
+            "username": username,
+            "user_tag": str(interaction.user) if interaction.user else None,
+            "text": f"{command_text} {arg_text}".strip(),
+            "message_id": str(interaction.id),
+            "chat_id": chat_id,
+            "channel_type": "dm"
+            if isinstance(interaction.channel, discord.DMChannel)
+            else "guild",
+        }
+        await self._post_to_ds(payload)
+
+        try:
+            if interaction.response.is_done():
+                await interaction.followup.send("命令已提交，请稍等...", ephemeral=True)
+            else:
+                await interaction.response.send_message(
+                    "命令已提交，请稍等...",
+                    ephemeral=True,
+                )
+        except Exception as err:
+            logger.debug(f"发送 Discord 斜杠命令确认失败：{err}")
+
     def send_msg(
         self,
         title: str,