reverse bridge

This commit is contained in:
kislovdm
2026-04-09 11:54:47 +03:00
parent b19189a6e2
commit bd0daf5054
4 changed files with 426 additions and 1 deletions
+11 -1
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@@ -6,6 +6,7 @@ from dotenv import load_dotenv
from bridge import MaxToTelegramBridge
from config import load_settings
from reverse_bridge import TelegramToMaxBridge
from storage import BridgeStorage
from telegram_api import TelegramClient
@@ -35,12 +36,21 @@ def build_client() -> tuple[MaxClient, MaxToTelegramBridge]:
def main() -> None:
load_dotenv()
_setup_logging()
max_client, bridge = build_client()
settings = load_settings()
max_client = MaxClient(phone=settings.max_phone, work_dir=settings.max_work_dir)
telegram_client = TelegramClient(
bot_token=settings.telegram_bot_token,
fallback_user_id=settings.telegram_fallback_user_id,
)
storage = BridgeStorage(settings.sqlite_path)
bridge = MaxToTelegramBridge(max_client=max_client, telegram=telegram_client, storage=storage)
reverse_bridge = TelegramToMaxBridge(max_client=max_client, telegram=telegram_client, storage=storage)
logger = logging.getLogger("max2telegram")
@max_client.on_start
async def on_start() -> None:
logger.info("Max client started as %s", max_client.me.id)
asyncio.create_task(reverse_bridge.start())
@max_client.on_message()
async def on_message(message: Message) -> None:
+323
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@@ -0,0 +1,323 @@
import asyncio
import logging
import time
from dataclasses import dataclass, field
from typing import Any
from pymax import MaxClient
from pymax.files import Photo, Video
from storage import BridgeStorage
from telegram_api import TelegramClient
logger = logging.getLogger(__name__)
def _normalize_title(value: str) -> str:
return str(value or "").strip().casefold()
def _telegram_chat_title(chat: dict[str, Any]) -> str:
# для каналов обычно есть title; для групп тоже; в крайнем случае — username
return str(chat.get("title") or chat.get("username") or "").strip()
@dataclass
class _MediaGroupBuffer:
first_seen_monotonic: float
updates: list[dict[str, Any]] = field(default_factory=list)
class TelegramToMaxBridge:
def __init__(self, *, max_client: MaxClient, telegram: TelegramClient, storage: BridgeStorage) -> None:
self._max_client = max_client
self._telegram = telegram
self._storage = storage
self._max_title_to_id: dict[str, int] = {}
self._bot_id: str | None = None
self._offset: int | None = None
self._media_groups: dict[tuple[str, str], _MediaGroupBuffer] = {}
self._media_group_grace_sec = 1.2
async def start(self) -> None:
me = await self._telegram.get_me()
self._bot_id = str(me.get("id") or "")
if not self._bot_id:
raise RuntimeError("Cannot resolve Telegram bot id (getMe)")
self._refresh_max_chat_cache()
logger.info("Telegram->Max bridge started (bot_id=%s)", self._bot_id)
while True:
try:
updates = await self._telegram.get_updates(offset=self._offset, timeout=25, limit=100)
await self._handle_updates(updates)
except Exception:
logger.exception("Telegram polling loop error")
await asyncio.sleep(2)
async def _handle_updates(self, updates: list[dict[str, Any]]) -> None:
max_update_id = None
for upd in updates:
upd_id = upd.get("update_id")
if isinstance(upd_id, int):
max_update_id = upd_id if max_update_id is None else max(max_update_id, upd_id)
message = None
for container in ("message", "edited_message", "channel_post", "edited_channel_post"):
candidate = upd.get(container)
if isinstance(candidate, dict):
message = candidate
break
if not message:
continue
if self._is_own_telegram_message(message):
continue
await self._handle_message(message)
if max_update_id is not None:
self._offset = max_update_id + 1
await self._flush_ready_media_groups()
def _is_own_telegram_message(self, message: dict[str, Any]) -> bool:
sender = message.get("from")
if isinstance(sender, dict):
if sender.get("is_bot") is True:
# важно: не уйти в цикл на собственных постах бота
return True
if self._bot_id and str(sender.get("id") or "") == self._bot_id:
return True
return False
async def _handle_message(self, message: dict[str, Any]) -> None:
chat = message.get("chat")
if not isinstance(chat, dict):
return
chat_title = _telegram_chat_title(chat)
normalized = _normalize_title(chat_title)
if not normalized:
logger.error("Telegram chat without title/username, skip (chat=%s)", chat)
return
max_chat_id = self._resolve_max_chat_id_by_title(normalized)
if max_chat_id is None:
# требование: если в MAX нет канала/группы — ошибка и не пересылать
logger.error("MAX чат с названием '%s' не найден — сообщение не пересылаю", chat_title)
return
telegram_chat_id = str(chat.get("id"))
telegram_message_id = str(message.get("message_id"))
media_group_id = message.get("media_group_id")
if media_group_id is not None:
key = (telegram_chat_id, str(media_group_id))
buf = self._media_groups.get(key)
if buf is None:
buf = _MediaGroupBuffer(first_seen_monotonic=time.monotonic())
self._media_groups[key] = buf
buf.updates.append(message)
return
await self._forward_single_message(
max_chat_id=max_chat_id,
telegram_chat_id=telegram_chat_id,
telegram_message_id=telegram_message_id,
message=message,
media_group_id=None,
)
async def _flush_ready_media_groups(self) -> None:
now = time.monotonic()
ready: list[tuple[tuple[str, str], _MediaGroupBuffer]] = []
for key, buf in self._media_groups.items():
if (now - buf.first_seen_monotonic) >= self._media_group_grace_sec:
ready.append((key, buf))
for key, buf in ready:
self._media_groups.pop(key, None)
telegram_chat_id, media_group_id = key
# сообщения альбома приходят отдельно; отправляем в MAX одним сообщением с несколькими attachments
await self._forward_media_group(
telegram_chat_id=telegram_chat_id,
media_group_id=media_group_id,
messages=buf.updates,
)
async def _forward_media_group(self, *, telegram_chat_id: str, media_group_id: str, messages: list[dict[str, Any]]) -> None:
if not messages:
return
chat = messages[0].get("chat")
if not isinstance(chat, dict):
return
chat_title = _telegram_chat_title(chat)
normalized = _normalize_title(chat_title)
max_chat_id = self._resolve_max_chat_id_by_title(normalized)
if max_chat_id is None:
logger.error("MAX чат с названием '%s' не найден — media group не пересылаю", chat_title)
return
# Telegram может прислать несколько элементов с caption только на первом. Берём text/caption с первого, где он есть.
text = ""
for m in messages:
cand = str(m.get("text") or m.get("caption") or "").strip()
if cand:
text = cand
break
reply_to = self._resolve_reply_to_max_id(max_chat_id=max_chat_id, message=messages[0])
attachments: list[Any] = []
for m in messages:
attachments.extend(await self._extract_attachments(m))
if not text and not attachments:
return
sent = await self._max_client.send_message(
chat_id=max_chat_id,
text=text,
attachments=attachments if attachments else None,
reply_to=reply_to,
)
if not sent:
logger.error("MAX send_message returned empty for media group (chat_id=%s)", max_chat_id)
return
max_message_id = str(getattr(sent, "id", "") or "")
if not max_message_id:
logger.error("Cannot resolve MAX message id after sending media group (chat_id=%s)", max_chat_id)
return
for m in messages:
tid = str(m.get("message_id"))
if tid:
self._storage.save_mapping(
telegram_chat_id=telegram_chat_id,
telegram_message_id=tid,
max_chat_id=str(max_chat_id),
max_message_id=max_message_id,
media_group_id=media_group_id,
)
logger.info(
"Forwarded Telegram media group %s (count=%s) -> MAX %s/%s",
media_group_id,
len(messages),
max_chat_id,
max_message_id,
)
async def _forward_single_message(
self,
*,
max_chat_id: int,
telegram_chat_id: str,
telegram_message_id: str,
message: dict[str, Any],
media_group_id: str | None,
) -> None:
text = str(message.get("text") or message.get("caption") or "").strip()
attachments = await self._extract_attachments(message)
if not text and not attachments:
return
reply_to = self._resolve_reply_to_max_id(max_chat_id=max_chat_id, message=message)
sent = await self._max_client.send_message(
chat_id=max_chat_id,
text=text,
attachments=attachments if attachments else None,
reply_to=reply_to,
)
if not sent:
logger.error("MAX send_message returned empty (chat_id=%s)", max_chat_id)
return
max_message_id = str(getattr(sent, "id", "") or "")
if not max_message_id:
logger.error("Cannot resolve MAX message id after sending (chat_id=%s)", max_chat_id)
return
self._storage.save_mapping(
telegram_chat_id=telegram_chat_id,
telegram_message_id=telegram_message_id,
max_chat_id=str(max_chat_id),
max_message_id=max_message_id,
media_group_id=media_group_id,
)
logger.info("Forwarded Telegram %s/%s -> MAX %s/%s", telegram_chat_id, telegram_message_id, max_chat_id, max_message_id)
def _resolve_reply_to_max_id(self, *, max_chat_id: int, message: dict[str, Any]) -> str | None:
reply = message.get("reply_to_message")
if not isinstance(reply, dict):
return None
reply_mid = reply.get("message_id")
if reply_mid is None:
return None
chat = message.get("chat")
if not isinstance(chat, dict):
return None
telegram_chat_id = str(chat.get("id"))
mapped = self._storage.get_max_message_id_for_telegram(
telegram_chat_id=telegram_chat_id,
telegram_message_id=str(reply_mid),
)
# reply_to в MAX — это id сообщения; если не нашли, просто отправляем без reply
return mapped
async def _extract_attachments(self, message: dict[str, Any]) -> list[Any]:
attachments: list[Any] = []
# photo: массив размеров, берём последний (самый большой)
photos = message.get("photo")
if isinstance(photos, list) and photos:
best = None
for p in photos:
if isinstance(p, dict) and p.get("file_id"):
best = p
if best and isinstance(best, dict):
file_id = str(best.get("file_id"))
if file_id:
try:
url = await self._telegram.get_file_url(file_id)
attachments.append(Photo(url=url))
except Exception:
logger.exception("Cannot fetch Telegram photo URL")
video = message.get("video")
if isinstance(video, dict) and video.get("file_id"):
file_id = str(video.get("file_id"))
if file_id:
try:
url = await self._telegram.get_file_url(file_id)
attachments.append(Video(url=url))
except Exception:
logger.exception("Cannot fetch Telegram video URL")
return attachments
def _refresh_max_chat_cache(self) -> None:
title_to_id: dict[str, int] = {}
for chat in getattr(self._max_client, "chats", []) or []:
title = getattr(chat, "title", None)
chat_id = getattr(chat, "id", None)
if title and chat_id is not None:
title_to_id[_normalize_title(str(title))] = int(chat_id)
self._max_title_to_id = title_to_id
def _resolve_max_chat_id_by_title(self, normalized_title: str) -> int | None:
chat_id = self._max_title_to_id.get(normalized_title)
if chat_id is not None:
return chat_id
# на всякий случай обновим кэш (например, если добавили чат во время работы)
self._refresh_max_chat_cache()
return self._max_title_to_id.get(normalized_title)
+55
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@@ -22,6 +22,25 @@ class BridgeStorage:
)
"""
)
conn.execute(
"""
CREATE TABLE IF NOT EXISTS message_mapping (
telegram_chat_id TEXT NOT NULL,
telegram_message_id TEXT NOT NULL,
max_chat_id TEXT NOT NULL,
max_message_id TEXT NOT NULL,
media_group_id TEXT,
created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (telegram_chat_id, telegram_message_id)
)
"""
)
conn.execute(
"CREATE INDEX IF NOT EXISTS idx_message_mapping_max ON message_mapping (max_chat_id, max_message_id)"
)
conn.execute(
"CREATE INDEX IF NOT EXISTS idx_message_mapping_media_group ON message_mapping (telegram_chat_id, media_group_id)"
)
conn.commit()
def was_forwarded(self, message_id: str, chat_id: str) -> bool:
@@ -39,3 +58,39 @@ class BridgeStorage:
(message_id, chat_id),
)
conn.commit()
def save_mapping(
self,
*,
telegram_chat_id: str,
telegram_message_id: str,
max_chat_id: str,
max_message_id: str,
media_group_id: str | None = None,
) -> None:
with closing(self._connect()) as conn:
conn.execute(
"""
INSERT OR REPLACE INTO message_mapping
(telegram_chat_id, telegram_message_id, max_chat_id, max_message_id, media_group_id)
VALUES (?, ?, ?, ?, ?)
""",
(telegram_chat_id, telegram_message_id, max_chat_id, max_message_id, media_group_id),
)
conn.commit()
def get_max_message_id_for_telegram(
self, *, telegram_chat_id: str, telegram_message_id: str
) -> str | None:
with closing(self._connect()) as conn:
row = conn.execute(
"""
SELECT max_message_id
FROM message_mapping
WHERE telegram_chat_id = ? AND telegram_message_id = ?
""",
(telegram_chat_id, telegram_message_id),
).fetchone()
if not row:
return None
return str(row[0])
+37
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@@ -11,9 +11,11 @@ class TelegramApiError(RuntimeError):
class TelegramClient:
def __init__(self, bot_token: str, fallback_user_id: str, timeout: int = 30) -> None:
self._base_url = f"https://api.telegram.org/bot{bot_token}"
self._file_base_url = f"https://api.telegram.org/file/bot{bot_token}"
self._fallback_user_id = fallback_user_id
self._timeout = timeout
self._chat_title_to_id: dict[str, str] = {}
self._me: dict[str, Any] | None = None
async def resolve_target_chat_id(self, max_chat_name: str) -> tuple[str, bool]:
chat_id = await self._find_chat_id_by_title(max_chat_name)
@@ -79,6 +81,41 @@ class TelegramClient:
},
)
async def get_me(self) -> dict[str, Any]:
if self._me is not None:
return self._me
data = await self._request("getMe", {})
me = data.get("result")
if not isinstance(me, dict):
raise TelegramApiError(f"Telegram getMe: unexpected payload {data}")
self._me = me
return me
async def get_updates(self, *, offset: int | None, timeout: int = 25, limit: int = 100) -> list[dict[str, Any]]:
payload: dict[str, Any] = {
"timeout": timeout,
"limit": limit,
# чтобы получать посты из каналов (channel_post) и обычные сообщения
"allowed_updates": ["message", "edited_message", "channel_post", "edited_channel_post"],
}
if offset is not None:
payload["offset"] = offset
data = await self._request("getUpdates", payload)
result = data.get("result", [])
if not isinstance(result, list):
return []
return [u for u in result if isinstance(u, dict)]
async def get_file_url(self, file_id: str) -> str:
data = await self._request("getFile", {"file_id": file_id})
result = data.get("result")
if not isinstance(result, dict):
raise TelegramApiError(f"Telegram getFile: unexpected payload {data}")
file_path = result.get("file_path")
if not isinstance(file_path, str) or not file_path.strip():
raise TelegramApiError(f"Telegram getFile: missing file_path {data}")
return f"{self._file_base_url}/{file_path}"
async def _find_chat_id_by_title(self, chat_title: str) -> str | None:
normalized = self._normalize_title(chat_title)
if not normalized: