feat(discord): add configurable bot message filtering, allow bot to receive other bots' messages (#6505)

* feat(discord): add configurable bot message filtering

Add `discord_allow_bot_messages` config option to allow receiving
messages from other Discord bots. This is useful for bot-to-bot
communication scenarios like message forwarding between channels.

By default, bot messages are still ignored (backward compatible).

Usage: Set `discord_allow_bot_messages: true` in your Discord
platform configuration.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat(discord): add WebUI config for discord_allow_bot_messages

Add configuration option to the dashboard for the new
discord_allow_bot_messages feature. Users can now enable/disable
this option through the WebUI in all supported languages
(zh-CN, en-US, ru-RU).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* refactor(discord): use typed constructor argument for allow_bot_messages

Address code review feedback:
- Add `allow_bot_messages` as a typed constructor argument in DiscordBotClient
- Simplify the on_message check by using the instance attribute directly
- Pass the parameter in constructor instead of using setattr

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: MinaraAgent <minara-agent@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

astrbot/core/config/default.py

@@ -454,6 +454,7 @@ CONFIG_METADATA_2 = {
                         "discord_proxy": "",
                         "discord_command_register": True,
                         "discord_activity_name": "",
+                        "discord_allow_bot_messages": False,
                     },
                     "Misskey": {
                         "id": "misskey",
@@ -919,6 +920,11 @@ CONFIG_METADATA_2 = {
                         "type": "string",
                         "hint": "可选的 Discord 活动名称。留空则不设置活动。",
                     },
+                    "discord_allow_bot_messages": {
+                        "description": "允许接收机器人消息",
+                        "type": "bool",
+                        "hint": "启用后，AstrBot 将接收来自其他 Discord 机器人的消息。适用于机器人间通信场景（如消息转发）。默认关闭。",
+                    },
                     "port": {
                         "description": "回调服务器端口",
                         "type": "int",

astrbot/core/platform/sources/discord/client.py

@@ -15,9 +15,12 @@ else:
 class DiscordBotClient(discord.Bot):
     """Discord客户端封装"""
 
-    def __init__(self, token: str, proxy: str | None = None) -> None:
+    def __init__(
+        self, token: str, proxy: str | None = None, allow_bot_messages: bool = False
+    ) -> None:
         self.token = token
         self.proxy = proxy
+        self.allow_bot_messages = allow_bot_messages
 
         # 设置Intent权限，遵循权限最小化原则
         intents = discord.Intents.default()
@@ -95,7 +98,7 @@ class DiscordBotClient(discord.Bot):
 
     async def on_message(self, message: discord.Message) -> None:
         """当接收到消息时触发"""
-        if message.author.bot:
+        if message.author.bot and not self.allow_bot_messages:
             return
 
         logger.debug(

astrbot/core/platform/sources/discord/discord_platform_adapter.py

@@ -142,7 +142,8 @@ class DiscordPlatformAdapter(Platform):
             return
 
         proxy = self.config.get("discord_proxy") or None
-        self.client = DiscordBotClient(token, proxy)
+        allow_bot_messages = bool(self.config.get("discord_allow_bot_messages"))
+        self.client = DiscordBotClient(token, proxy, allow_bot_messages)
         self.client.on_message_received = on_received
 
         async def callback() -> None:

dashboard/src/i18n/locales/en-US/features/config-metadata.json

@@ -390,6 +390,10 @@
         "description": "Discord Activity Name",
         "hint": "Optional Discord activity name. Leave empty to disable."
       },
+      "discord_allow_bot_messages": {
+        "description": "Allow Bot Messages",
+        "hint": "When enabled, AstrBot will receive messages from other Discord bots. Useful for bot-to-bot communication scenarios (e.g., message forwarding). Disabled by default."
+      },
       "discord_command_register": {
         "description": "Register Discord slash commands",
         "hint": "When enabled, AstrBot will automatically register plugin commands as Discord slash commands"

dashboard/src/i18n/locales/ru-RU/features/config-metadata.json

@@ -390,6 +390,10 @@
                 "description": "Название активности Discord",
                 "hint": "Статус бота в Discord. Оставьте пустым для отключения."
             },
+            "discord_allow_bot_messages": {
+                "description": "Разрешить сообщения от ботов",
+                "hint": "Если включено, AstrBot будет получать сообщения от других Discord-ботов. Полезно для взаимодействия между ботами (например, пересылка сообщений). По умолчанию отключено."
+            },
             "discord_command_register": {
                 "description": "Регистрировать слэш-команды Discord",
                 "hint": "Если включено, команды плагинов будут зарегистрированы как /команды Discord."

dashboard/src/i18n/locales/zh-CN/features/config-metadata.json

@@ -392,6 +392,10 @@
         "description": "Discord 活动名称",
         "hint": "可选的 Discord 活动名称。留空则不设置活动。"
       },
+      "discord_allow_bot_messages": {
+        "description": "允许接收机器人消息",
+        "hint": "启用后，AstrBot 将接收来自其他 Discord 机器人的消息。适用于机器人间通信场景（如消息转发）。默认关闭。"
+      },
       "discord_command_register": {
         "description": "注册 Discord 指令",
         "hint": "启用后，自动将插件指令注册为 Discord 斜杠指令"