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f122e21092
* 增加 html to image 缓存 * 对 template_service.render 进行封装，管理缓存逻辑 * cache key 为 html 的 sha256 * cache value 为 reply_photo 后 telegram 返回的 file_id * 存入 redis，并设置合理的 ttl Co-authored-by: 洛水居室 <luoshuijs@outlook.com> Co-authored-by: xtaodada <xtao@xtaolink.cn>
127 lines
4.1 KiB
Python
127 lines
4.1 KiB
Python
from enum import Enum
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from typing import Optional, Union, List
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from telegram import Message, InputMediaPhoto, InputMediaDocument
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from core.template.cache import HtmlToFileIdCache
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from core.template.error import ErrorFileType, FileIdNotFound
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class FileType(Enum):
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PHOTO = 1
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DOCUMENT = 2
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@staticmethod
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def media_type(file_type: "FileType"):
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"""对应的 Telegram media 类型"""
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if file_type == FileType.PHOTO:
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return InputMediaPhoto
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elif file_type == FileType.DOCUMENT:
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return InputMediaDocument
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else:
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raise ErrorFileType
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class RenderResult:
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"""渲染结果"""
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def __init__(
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self,
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html: str,
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photo: Union[bytes, str],
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file_type: FileType,
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cache: HtmlToFileIdCache,
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ttl: int = 24 * 60 * 60,
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caption: Optional[str] = None,
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parse_mode: Optional[str] = None,
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filename: Optional[str] = None,
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):
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"""
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`html`: str 渲染生成的 html
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`photo`: Union[bytes, str] 渲染生成的图片。bytes 表示是图片，str 则为 file_id
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"""
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self.caption = caption
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self.parse_mode = parse_mode
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self.filename = filename
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self.html = html
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self.photo = photo
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self.file_type = file_type
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self._cache = cache
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self.ttl = ttl
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async def reply_photo(self, message: Message, *args, **kwargs):
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"""是 `message.reply_photo` 的封装，上传成功后，缓存 telegram 返回的 file_id，方便重复使用"""
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if self.file_type != FileType.PHOTO:
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raise ErrorFileType
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reply = await message.reply_photo(photo=self.photo, *args, **kwargs)
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await self.cache_file_id(reply)
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return reply
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async def reply_document(self, message: Message, *args, **kwargs):
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"""是 `message.reply_document` 的封装，上传成功后，缓存 telegram 返回的 file_id，方便重复使用"""
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if self.file_type != FileType.DOCUMENT:
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raise ErrorFileType
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reply = await message.reply_document(document=self.photo, *args, **kwargs)
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await self.cache_file_id(reply)
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return reply
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async def edit_media(self, message: Message, *args, **kwargs):
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"""是 `message.edit_media` 的封装，上传成功后，缓存 telegram 返回的 file_id，方便重复使用"""
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if self.file_type != FileType.PHOTO:
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raise ErrorFileType
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media = InputMediaPhoto(
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media=self.photo, caption=self.caption, parse_mode=self.parse_mode, filename=self.filename
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)
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edit_media = await message.edit_media(media, *args, **kwargs)
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await self.cache_file_id(edit_media)
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return edit_media
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async def cache_file_id(self, reply: Message):
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"""缓存 telegram 返回的 file_id"""
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if self.is_file_id():
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return
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if self.file_type == FileType.PHOTO and reply.photo:
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file_id = reply.photo[0].file_id
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elif self.file_type == FileType.DOCUMENT and reply.document:
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file_id = reply.document.file_id
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else:
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raise FileIdNotFound
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await self._cache.set_data(self.html, self.file_type.name, file_id, self.ttl)
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def is_file_id(self) -> bool:
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return isinstance(self.photo, str)
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class RenderGroupResult:
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def __init__(self, results: List[RenderResult]):
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self.results = results
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async def reply_media_group(self, message: Message, *args, **kwargs):
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"""是 `message.reply_media_group` 的封装，上传成功后，缓存 telegram 返回的 file_id，方便重复使用"""
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reply = await message.reply_media_group(
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media=[
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FileType.media_type(result.file_type)(
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media=result.photo, caption=result.caption, parse_mode=result.parse_mode, filename=result.filename
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)
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for result in self.results
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],
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*args,
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**kwargs,
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)
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for index, value in enumerate(reply):
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result = self.results[index]
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await result.cache_file_id(value)
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