style:idea默认格式化了部分代码

feat:添加根据消息事件获取群信息的接口

astrbot/core/platform/astr_message_event.py

@@ -1,11 +1,9 @@
 import abc
 import asyncio
 from dataclasses import dataclass
-from .astrbot_message import AstrBotMessage
-from .platform_metadata import PlatformMetadata
-from astrbot.core.message.message_event_result import MessageEventResult, MessageChain
-from astrbot.core.platform.message_type import MessageType
-from typing import List, Union
+from typing import List, Union, Optional
+
+from astrbot.core.db.po import Conversation
 from astrbot.core.message.components import (
     Plain,
     Image,
@@ -15,9 +13,12 @@ from astrbot.core.message.components import (
     AtAll,
     Forward,
 )
-from astrbot.core.utils.metrics import Metric
+from astrbot.core.message.message_event_result import MessageEventResult, MessageChain
+from astrbot.core.platform.message_type import MessageType
 from astrbot.core.provider.entites import ProviderRequest
-from astrbot.core.db.po import Conversation
+from astrbot.core.utils.metrics import Metric
+from .astrbot_message import AstrBotMessage, Group
+from .platform_metadata import PlatformMetadata
 
 
 @dataclass
@@ -37,11 +38,11 @@ class MessageSesion:
 
 class AstrMessageEvent(abc.ABC):
     def __init__(
-        self,
-        message_str: str,
-        message_obj: AstrBotMessage,
-        platform_meta: PlatformMetadata,
-        session_id: str,
+            self,
+            message_str: str,
+            message_obj: AstrBotMessage,
+            platform_meta: PlatformMetadata,
+            session_id: str,
     ):
         self.message_str = message_str
         """纯文本的消息"""
@@ -320,14 +321,14 @@ class AstrMessageEvent(abc.ABC):
     """LLM 请求相关"""
 
     def request_llm(
-        self,
-        prompt: str,
-        func_tool_manager=None,
-        session_id: str = None,
-        image_urls: List[str] = [],
-        contexts: List = [],
-        system_prompt: str = "",
-        conversation: Conversation = None,
+            self,
+            prompt: str,
+            func_tool_manager=None,
+            session_id: str = None,
+            image_urls: List[str] = [],
+            contexts: List = [],
+            system_prompt: str = "",
+            conversation: Conversation = None,
     ) -> ProviderRequest:
         """
         创建一个 LLM 请求。
@@ -363,3 +364,37 @@ class AstrMessageEvent(abc.ABC):
             system_prompt=system_prompt,
             conversation=conversation,
         )
+
+    async def get_group(self, group_id: str = None) -> Optional[Group]:
+        """
+        获取群聊，如果不填写group_id，且消息是私聊消息，则返回 None
+        目前只实现了 GeweChat 协议
+        """
+        # 确定有效的 group_id
+        if group_id is None:
+            group_id = self.message_obj.group_id
+
+        if group_id is None:
+            return None
+
+        # 检查平台是否为 gewechat
+        if self.platform_meta.name != "gewechat":
+            return None
+
+        from astrbot.core.platform.sources.gewechat.gewechat_event import (
+            GewechatPlatformEvent,
+        )
+
+        assert isinstance(self, GewechatPlatformEvent)
+        client = self.client
+
+        # 从客户端获取群信息
+        res = await client.get_group(group_id)
+
+        data = res["data"]
+
+        # 检查 chatroomId 是否为空
+        if data["chatroomId"] == "":
+            return None
+
+        return Group.from_dict(data)