Files
LangBot/src/langbot/pkg/platform/sources/line.py
Junyan Qin (Chin) 6421a6f5cb Feat/complete adapter features (#1849)
* feat: add voice and file supports for wecom

* feat: add   and  in query variables

* feat: supports for lark recv file message

* feat: kook recv voice msg

* feat: supports for Voice and File in discord

* chore: remove debug msg

* perf: remove unnecessary bot logs

* feat: implement bot log filtering and per label color (#1839)

* feat: add sender_name and group_name in query variables
2025-12-06 21:11:01 +08:00

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import typing
import quart
import traceback
import asyncio
import base64
import datetime
import langbot_plugin.api.definition.abstract.platform.adapter as abstract_platform_adapter
import langbot_plugin.api.entities.builtin.platform.message as platform_message
import langbot_plugin.api.entities.builtin.platform.events as platform_events
import langbot_plugin.api.entities.builtin.platform.entities as platform_entities
from ..logger import EventLogger
from linebot.v3 import WebhookHandler
from linebot.v3.exceptions import InvalidSignatureError
from linebot.v3.messaging import Configuration, ApiClient, MessagingApi, ReplyMessageRequest, TextMessage, ImageMessage
from linebot.v3.webhooks import (
MessageEvent,
TextMessageContent,
ImageMessageContent,
VideoMessageContent,
AudioMessageContent,
)
# from linebot import WebhookParser
from linebot.v3.webhook import WebhookParser
from linebot.v3.messaging import MessagingApiBlob
class LINEMessageConverter(abstract_platform_adapter.AbstractMessageConverter):
@staticmethod
async def yiri2target(message_chain: platform_message.MessageChain, api_client: ApiClient) -> typing.Tuple[list]:
content_list = []
for component in message_chain:
if isinstance(component, platform_message.At):
content_list.append({'type': 'at', 'target': component.target})
elif isinstance(component, platform_message.Plain):
content_list.append({'type': 'text', 'content': component.text})
elif isinstance(component, platform_message.Image):
# Only add image if it has a valid URL
if component.url:
content_list.append({'type': 'image', 'image': component.url})
elif isinstance(component, platform_message.Voice):
content_list.append({'type': 'voice', 'url': component.url, 'length': component.length})
return content_list
@staticmethod
async def target2yiri(message, bot_client) -> platform_message.MessageChain:
lb_msg_list = []
msg_create_time = datetime.datetime.fromtimestamp(int(message.timestamp) / 1000)
lb_msg_list.append(platform_message.Source(id=message.webhook_event_id, time=msg_create_time))
if isinstance(message.message, TextMessageContent):
lb_msg_list.append(platform_message.Plain(text=message.message.text))
elif isinstance(message.message, AudioMessageContent):
pass
elif isinstance(message.message, VideoMessageContent):
pass
elif isinstance(message.message, ImageMessageContent):
message_content = MessagingApiBlob(bot_client).get_message_content(message.message.id)
base64_string = base64.b64encode(message_content).decode('utf-8')
# 如果需要Data URI格式用于直接嵌入HTML等
# 首先需要知道图片类型LINE图片通常是JPEG
data_uri = f'data:image/jpeg;base64,{base64_string}'
lb_msg_list.append(platform_message.Image(base64=data_uri))
return platform_message.MessageChain(lb_msg_list)
class LINEEventConverter(abstract_platform_adapter.AbstractEventConverter):
@staticmethod
async def yiri2target(
event: platform_events.MessageEvent,
) -> MessageEvent:
pass
@staticmethod
async def target2yiri(event, bot_client) -> platform_events.Event:
message_chain = await LINEMessageConverter.target2yiri(event, bot_client)
if event.source.type == 'user':
return platform_events.FriendMessage(
sender=platform_entities.Friend(
id=event.message.id,
nickname=event.source.user_id,
remark='',
),
message_chain=message_chain,
time=event.timestamp,
source_platform_object=event,
)
else:
return platform_events.GroupMessage(
sender=platform_entities.GroupMember(
id=event.event.sender.sender_id.open_id,
member_name=event.event.sender.sender_id.union_id,
permission=platform_entities.Permission.Member,
group=platform_entities.Group(
id=event.message.id,
name='',
permission=platform_entities.Permission.Member,
),
special_title='',
),
message_chain=message_chain,
time=event.timestamp,
source_platform_object=event,
)
class LINEAdapter(abstract_platform_adapter.AbstractMessagePlatformAdapter):
bot: MessagingApi
api_client: ApiClient
parser: WebhookParser
bot_account_id: str # 用于在流水线中识别at是否是本bot直接以bot_name作为标识
message_converter: LINEMessageConverter
event_converter: LINEEventConverter
listeners: typing.Dict[
typing.Type[platform_events.Event],
typing.Callable[[platform_events.Event, abstract_platform_adapter.AbstractMessagePlatformAdapter], None],
]
config: dict
bot_uuid: str = None
card_id_dict: dict[str, str] # 消息id到卡片id的映射便于创建卡片后的发送消息到指定卡片
seq: int # 用于在发送卡片消息中识别消息顺序直接以seq作为标识
def __init__(self, config: dict, logger: EventLogger):
configuration = Configuration(access_token=config['channel_access_token'])
line_webhook = WebhookHandler(config['channel_secret'])
parser = WebhookParser(config['channel_secret'])
api_client = ApiClient(configuration)
bot_account_id = config.get('bot_account_id', 'langbot')
super().__init__(
config=config,
logger=logger,
listeners={},
card_id_dict={},
seq=1,
event_converter=LINEEventConverter(),
message_converter=LINEMessageConverter(),
line_webhook=line_webhook,
parser=parser,
configuration=configuration,
api_client=api_client,
bot=MessagingApi(api_client),
bot_account_id=bot_account_id,
)
async def send_message(self, target_type: str, target_id: str, message: platform_message.MessageChain):
pass
async def reply_message(
self,
message_source: platform_events.MessageEvent,
message: platform_message.MessageChain,
quote_origin: bool = False,
):
content_list = await self.message_converter.yiri2target(message, self.api_client)
for content in content_list:
if content['type'] == 'text':
self.bot.reply_message_with_http_info(
ReplyMessageRequest(
reply_token=message_source.source_platform_object.reply_token,
messages=[TextMessage(text=content['content'])],
)
)
elif content['type'] == 'image':
# LINE ImageMessage requires original_content_url and preview_image_url
image_url = content['image']
self.bot.reply_message_with_http_info(
ReplyMessageRequest(
reply_token=message_source.source_platform_object.reply_token,
messages=[ImageMessage(original_content_url=image_url, preview_image_url=image_url)],
)
)
async def is_muted(self, group_id: int) -> bool:
return False
def register_listener(
self,
event_type: typing.Type[platform_events.Event],
callback: typing.Callable[
[platform_events.Event, abstract_platform_adapter.AbstractMessagePlatformAdapter], None
],
):
self.listeners[event_type] = callback
def unregister_listener(
self,
event_type: typing.Type[platform_events.Event],
callback: typing.Callable[
[platform_events.Event, abstract_platform_adapter.AbstractMessagePlatformAdapter], None
],
):
self.listeners.pop(event_type)
def set_bot_uuid(self, bot_uuid: str):
"""设置 bot UUID用于生成 webhook URL"""
self.bot_uuid = bot_uuid
async def handle_unified_webhook(self, bot_uuid: str, path: str, request):
"""处理统一 webhook 请求。
Args:
bot_uuid: Bot 的 UUID
path: 子路径(如果有的话)
request: Quart Request 对象
Returns:
响应数据
"""
try:
signature = request.headers.get('X-Line-Signature')
body = await request.get_data(as_text=True)
# Check if signature header exists
if not signature:
await self.logger.warning('Missing X-Line-Signature header')
return quart.Response('Missing X-Line-Signature header', status=400)
try:
events = self.parser.parse(body, signature) # 解密解析消息
except InvalidSignatureError:
await self.logger.info(
f'Invalid signature. Please check your channel access token/channel secret.{traceback.format_exc()}'
)
return quart.Response('Invalid signature', status=400)
# 处理事件
if events and len(events) > 0:
lb_event = await self.event_converter.target2yiri(events[0], self.api_client)
if lb_event.__class__ in self.listeners:
await self.listeners[lb_event.__class__](lb_event, self)
return {'code': 200, 'message': 'ok'}
except Exception:
await self.logger.error(f'Error in LINE callback: {traceback.format_exc()}')
print(traceback.format_exc())
return {'code': 500, 'message': 'error'}
async def run_async(self):
# 统一 webhook 模式下,不启动独立的 Quart 应用
# 保持运行但不启动独立端口
# 打印 webhook 回调地址
async def keep_alive():
while True:
await asyncio.sleep(1)
await keep_alive()
async def kill(self) -> bool:
pass