feat(transcribe,texts): voice notes and round videos to the bot come with a transcript, beavergram finds them by sha256 and telegram premium transcribes
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"""Голосовые и кружки Бобра расшифровывает Telegram Premium, а достаёт beavergram.
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Бот получает файл из лички с Бобром; userbot beavergram видит то же
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сообщение с аккаунта Бобра и кладёт медиа по sha256 содержимого. По хешу
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находится сообщение, по сообщению - расшифровка: готовая или свежая через
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`/api/media/transcribe`. Треки и аудиофайлы не расшифровываются - только
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`voice` и `video_note`; трек агент при нужде расшифрует MCP-тулзой сам.
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"""
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from __future__ import annotations
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import asyncio
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import hashlib
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import logging
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from dataclasses import dataclass, field
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from typing import TYPE_CHECKING, Any
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from urllib.parse import parse_qs, urlsplit
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import aiohttp
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if TYPE_CHECKING:
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from collections.abc import Mapping
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from pathlib import Path
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from beaver_gateway.transcribe import Audio
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__all__ = ["BeavergramTranscriber"]
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_log = logging.getLogger(__name__)
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HEARD = frozenset({"audio/ogg", "video/mp4"})
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"""Типы, под которыми Telegram-окно отдаёт голосовое и кружок."""
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SPOKEN = ("voice", "video_note")
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@dataclass(slots=True)
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class BeavergramTranscriber:
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origin: str
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token: str = field(repr=False)
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tg_user_id: int
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"""Аккаунт Бобра в beavergram ищется по его Telegram id."""
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find_for: float = 15.0
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"""Сколько ждать, пока userbot поймает и скачает то же сообщение."""
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find_every: float = 1.0
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wait: int = 60
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"""Сколько beavergram ждёт Premium-расшифровку, прежде чем ответить pending."""
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request_timeout: float = 10.0
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_account: int | None = field(default=None, init=False, repr=False)
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@classmethod
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def from_env(cls, env: Mapping[str, str]) -> BeavergramTranscriber | None:
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"""Из `BEAVERGRAM_MCP` (`https://host/mcp?token=…`) и `TELEGRAM_USER_ID`."""
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url = urlsplit(env.get("BEAVERGRAM_MCP", ""))
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token = parse_qs(url.query).get("token", [""])[0]
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user = env.get("TELEGRAM_USER_ID", "")
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if not (url.scheme and url.netloc and token and user.isdigit()):
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return None
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return cls(
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origin=f"{url.scheme}://{url.netloc}", token=token, tg_user_id=int(user)
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)
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async def __call__(self, audio: Audio) -> str | None:
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if audio.media_type not in HEARD:
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return None
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try:
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digest = await asyncio.to_thread(_sha256, audio.path)
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async with aiohttp.ClientSession(
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base_url=self.origin,
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headers={"Authorization": f"Bearer {self.token}"},
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timeout=aiohttp.ClientTimeout(total=self.request_timeout),
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) as http:
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return await self._transcribe(http, digest)
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except (aiohttp.ClientError, TimeoutError, OSError, ValueError) as exc:
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_log.warning(
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"beavergram: %s не расшифровано: %s: %s",
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audio.path.name,
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type(exc).__name__,
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exc,
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)
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return None
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async def _transcribe(self, http: aiohttp.ClientSession, digest: str) -> str | None:
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account = await self._account_id(http)
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if account is None:
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_log.warning("beavergram: нет аккаунта с tg_user_id %s", self.tg_user_id)
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return None
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place = await self._find(http, digest, account)
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if place is None:
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_log.info("beavergram: голосового с sha256 %s нет", digest[:12])
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return None
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if place.get("extracted_text"):
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return place["extracted_text"]
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result = await _json(
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http.post(
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"/api/media/transcribe",
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json={
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"account_id": account,
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"chat_id": place["chat_id"],
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"message_id": place["message_id"],
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"wait": self.wait,
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},
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timeout=aiohttp.ClientTimeout(total=self.wait + self.request_timeout),
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)
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)
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if result.get("status") == "done":
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return result.get("text")
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_log.info(
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"beavergram: расшифровка %s/%s - %s %s",
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place["chat_id"],
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place["message_id"],
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result.get("status"),
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result.get("error") or "",
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)
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return None
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async def _account_id(self, http: aiohttp.ClientSession) -> int | None:
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if self._account is None:
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accounts = await _json(http.get("/api/accounts"))
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self._account = next(
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(
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a["account_id"]
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for a in accounts
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if a.get("tg_user_id") == self.tg_user_id
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),
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None,
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)
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return self._account
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async def _find(
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self, http: aiohttp.ClientSession, digest: str, account: int
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) -> dict[str, Any] | None:
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loop = asyncio.get_running_loop()
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deadline = loop.time() + self.find_for
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while True:
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places = await _json(
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http.get(
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"/api/media/lookup",
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params={"sha256": digest, "account_id": account},
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)
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)
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if places or loop.time() >= deadline:
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return next((p for p in places if p.get("kind") in SPOKEN), None)
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await asyncio.sleep(self.find_every)
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async def _json(request: Any) -> Any:
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async with request as response:
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response.raise_for_status()
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return await response.json()
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def _sha256(path: Path) -> str:
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with path.open("rb") as file:
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return hashlib.file_digest(file, "sha256").hexdigest()
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