160 lines
5.9 KiB
Python
160 lines
5.9 KiB
Python
from io import BytesIO
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from typing import Annotated
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import httpx
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import PIL.Image
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from loguru import logger
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import nonebot
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from nonebot.matcher import Matcher
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from nonebot.adapters import Bot, Event, Message
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from nonebot.adapters.discord import Bot as DiscordBot
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from nonebot.adapters.onebot.v11 import Bot as OnebotV11Bot
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from nonebot.adapters.onebot.v11 import Message as OnebotV11Message
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from nonebot.adapters.onebot.v11 import MessageEvent as OnebotV11MessageEvent
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import nonebot.params
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from nonebot_plugin_alconna import Image, RefNode, Reply, UniMessage
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from PIL import UnidentifiedImageError
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from returns.result import Failure, Result, Success
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from konabot.common.nb.exc import BotExceptionMessage
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async def download_image_bytes(url: str) -> Result[bytes, str]:
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# if "/matcha/cache/" in url:
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# url = url.replace('127.0.0.1', '10.126.126.101')
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logger.debug(f"开始从 {url} 下载图片")
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async with httpx.AsyncClient() as c:
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try:
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response = await c.get(url)
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except (httpx.ConnectError, httpx.RemoteProtocolError) as e:
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return Failure(f"HTTPX 模块下载图片时出错：{e}")
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except httpx.ConnectTimeout:
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return Failure("下载图片失败了，网络超时了qwq")
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if response.status_code != 200:
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return Failure("无法下载图片，可能存在网络问题需要排查")
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return Success(response.content)
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def bytes_to_pil(raw_data: bytes | BytesIO) -> Result[PIL.Image.Image, str]:
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try:
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if not isinstance(raw_data, BytesIO):
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img_pil = PIL.Image.open(BytesIO(raw_data))
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else:
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img_pil = PIL.Image.open(raw_data)
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img_pil.verify()
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if not isinstance(raw_data, BytesIO):
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img = PIL.Image.open(BytesIO(raw_data))
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else:
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raw_data.seek(0)
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img = PIL.Image.open(raw_data)
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return Success(img)
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except UnidentifiedImageError:
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return Failure("图像无法读取，可能是格式不支持orz")
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except IOError:
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return Failure("图像无法读取，可能是网络存在问题orz")
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async def unimsg_img_to_pil(image: Image) -> Result[PIL.Image.Image, str]:
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if image.url is not None:
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raw_result = await download_image_bytes(image.url)
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elif image.raw is not None:
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raw_result = Success(image.raw)
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else:
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return Failure("由于一些内部问题，下载图片失败了orz")
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return raw_result.bind(bytes_to_pil)
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async def extract_image_from_qq_message(
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msg: OnebotV11Message,
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evt: OnebotV11MessageEvent,
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bot: OnebotV11Bot,
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allow_reply: bool = True,
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) -> Result[PIL.Image.Image, str]:
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if allow_reply and (reply := evt.reply) is not None:
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return await extract_image_from_qq_message(
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reply.message,
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evt,
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bot,
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False,
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)
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for seg in msg:
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if seg.type == "reply" and allow_reply:
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msgid = seg.data.get("id")
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if msgid is None:
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return Failure("消息可能太久远，无法读取到消息原文")
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try:
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msg2 = await bot.get_msg(message_id=msgid)
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except Exception as e:
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logger.warning(f"获取消息内容时出错：{e}")
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return Failure("消息可能太久远，无法读取到消息原文")
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msg2_data = msg2.get("message")
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if msg2_data is None:
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return Failure("消息可能太久远，无法读取到消息原文")
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logger.debug("发现消息引用，递归一层")
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return await extract_image_from_qq_message(
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msg=OnebotV11Message(msg2_data),
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evt=evt,
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bot=bot,
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allow_reply=False,
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)
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if seg.type == "image":
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url = seg.data.get("url")
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if url is None:
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return Failure("无法下载图片，可能有一些网络问题")
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data = await download_image_bytes(url)
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return data.bind(bytes_to_pil)
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return Failure("请在消息中包含图片，或者引用一个含有图片的消息")
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async def extract_image_from_message(
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msg: Message,
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evt: Event,
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bot: Bot,
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allow_reply: bool = True,
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) -> Result[PIL.Image.Image, str]:
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if (
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isinstance(bot, OnebotV11Bot)
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and isinstance(msg, OnebotV11Message)
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and isinstance(evt, OnebotV11MessageEvent)
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):
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# 看起来 UniMessage 在这方面能力似乎不足，因此用 QQ 的
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logger.debug('获取图片的路径 Fallback 到 QQ 模块')
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return await extract_image_from_qq_message(msg, evt, bot, allow_reply)
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for seg in UniMessage.of(msg, bot):
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logger.info(seg)
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if isinstance(seg, Image):
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return await unimsg_img_to_pil(seg)
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elif isinstance(seg, Reply) and allow_reply:
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msg2 = seg.msg
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logger.debug(f"深入搜索引用的消息：{msg2}")
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if msg2 is None or isinstance(msg2, str):
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continue
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return await extract_image_from_message(msg2, evt, bot, False)
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elif isinstance(seg, RefNode) and allow_reply:
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if isinstance(bot, DiscordBot):
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return Failure("暂时不支持在 Discord 中通过引用的方式获取图片")
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else:
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return Failure("暂时不支持在这里中通过引用的方式获取图片")
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return Failure("请在消息中包含图片，或者引用一个含有图片的消息")
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async def _ext_img(
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evt: Event,
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bot: Bot,
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matcher: Matcher,
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) -> PIL.Image.Image | None:
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match await extract_image_from_message(evt.get_message(), evt, bot):
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case Success(img):
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return img
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case Failure(err):
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# raise BotExceptionMessage(err)
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await matcher.send(await UniMessage().text(err).export())
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return None
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assert False
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PIL_Image = Annotated[PIL.Image.Image, nonebot.params.Depends(_ext_img)]
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