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607 | class TelegramClient(BaseClient):
"""Messaging client adapter for Telegram.
Listens for incoming text messages and commands via the Telegram Bot API
(long-polling) and forwards them to the registered LLM handler.
Args:
config: Telegram-specific configuration (bot token).
handler: Async callable that receives the user's text and returns the
LLM's reply.
"""
def __init__(self, config: TelegramClientConfig, handler: LLMHandler) -> None:
super().__init__(handler)
self._config = config
self._app: Application | None = None
self._stop_event: asyncio.Event | None = None
self._approval_messages: dict[str, tuple[str, str]] = {}
# ------------------------------------------------------------------
# Telegram update handlers
# ------------------------------------------------------------------
async def _reply_text_safe(self, message, text: str, **kwargs):
"""Send a reply using Markdown; retry as plain text on parse errors."""
try:
# Escape special characters in Telegram markdown
for char in RESERVED_PARSE_CHARACTERS:
text = text.replace(char, f"\\{char}")
return await message.reply_text(
text, parse_mode=MARKDOWN_PARSE_MODE, **kwargs
)
except BadRequest as exc:
if "Can't parse entities" not in str(exc):
raise
logger.warning(
"Markdown parse failed in reply_text, retrying plain text: %s", exc
)
return await message.reply_text(text, **kwargs)
async def _edit_message_text_safe(self, query, text: str, **kwargs) -> None:
"""Edit a message using Markdown; retry as plain text on parse errors."""
try:
await query.edit_message_text(
text, parse_mode=MARKDOWN_PARSE_MODE, **kwargs
)
except BadRequest as exc:
if "Can't parse entities" not in str(exc):
raise
logger.warning(
"Markdown parse failed in edit_message_text, retrying plain text: %s",
exc,
)
await query.edit_message_text(text, **kwargs)
async def _send_message_safe(self, bot, chat_id: str, text: str, **kwargs) -> None:
"""Send a message using Markdown; retry as plain text on parse errors."""
try:
await bot.send_message(
chat_id=chat_id,
text=text,
parse_mode=MARKDOWN_PARSE_MODE,
**kwargs,
)
except BadRequest as exc:
if "Can't parse entities" not in str(exc):
raise
logger.warning(
"Markdown parse failed in send_message, retrying plain text: %s", exc
)
await bot.send_message(chat_id=chat_id, text=text, **kwargs)
async def _edit_chat_message_text_safe(
self,
bot,
chat_id: str,
message_id: str,
text: str,
**kwargs,
) -> None:
"""Edit a chat message by ID using Markdown with plain-text fallback."""
message_id_int = int(message_id)
try:
await bot.edit_message_text(
chat_id=chat_id,
message_id=message_id_int,
text=text,
parse_mode=MARKDOWN_PARSE_MODE,
**kwargs,
)
except BadRequest as exc:
if "Can't parse entities" not in str(exc):
raise
logger.warning(
"Markdown parse failed in edit_message_text by id, retrying plain text: %s",
exc,
)
await bot.edit_message_text(
chat_id=chat_id,
message_id=message_id_int,
text=text,
**kwargs,
)
@property
def _orchestrator(self):
"""Return the bound Orchestrator instance if one is registered as handler, else None."""
bound_self = getattr(self._handler, "__self__", None)
if bound_self is not None and bound_self.__class__.__name__ == "Orchestrator":
return bound_self
return None
async def _handle_command(
self, update: Update, context: ContextTypes.DEFAULT_TYPE
) -> None:
"""Catch-all handler for slash-commands delegated to orchestrator.
Extracts the bare command name from the incoming message and delegates
to ``Orchestrator.handle_admin_command()``. Any client that integrates
admin commands only needs to hook into that single orchestrator method.
"""
if not update.message:
return
raw = (update.message.text or "").strip()
# Handle both /cmd and /cmd@botname forms
command = (
raw.lstrip("/").split("@")[0].split()[0].lower()
if raw.startswith("/")
else ""
)
args = list(context.args or [])
chat_id = str(update.message.chat.id)
orch = self._orchestrator
if orch is not None:
response = await orch.handle_admin_command(chat_id, command, args)
else:
response = "Admin commands are only available in orchestrator mode."
await self._reply_text_safe(update.message, response)
async def _handle_message(
self, update: Update, context: ContextTypes.DEFAULT_TYPE
) -> None:
"""Handle incoming text messages by delegating to the LLM handler."""
if not update.message:
return
user_text = update.message.text or update.message.caption or ""
image_urls = await self._extract_image_data_urls(update, context)
if not user_text and not image_urls:
return
chat_id = str(update.message.chat.id)
logger.info(
"Received message from user %s in chat %s",
update.effective_user,
chat_id,
)
# Show a typing action while waiting for the LLM
if update.message.chat:
await context.bot.send_chat_action(
chat_id=update.message.chat.id, action="typing"
)
try:
# Keep backward compatibility with one-argument handlers used in
# tests/custom integrations, but pass channel context when the
# orchestrator handler is registered.
bound_self = getattr(self._handler, "__self__", None)
if (
bound_self is not None
and bound_self.__class__.__name__ == "Orchestrator"
):
message_content = build_user_content(user_text, image_urls=image_urls)
reply = await self._handler(
chat_id,
user_text,
message_content=message_content,
message_context={
"platform": "telegram",
"chat_type": getattr(update.message.chat, "type", None),
"effective_user_id": getattr(update.effective_user, "id", None),
},
)
else:
reply = await self._handler(user_text)
except Exception as exc:
logger.exception("Error from LLM handler: %s", exc)
reply = "⚠️ Sorry, I encountered an error. Please try again."
# Check if reply is a structured MessageResponse with approval metadata
if isinstance(reply, MessageResponse):
if reply.approval_id:
# Create inline keyboard with Approve/Reject buttons
keyboard = [
[
InlineKeyboardButton(
"✅ Approve", callback_data=f"approve:{reply.approval_id}"
),
InlineKeyboardButton(
"❌ Reject", callback_data=f"reject:{reply.approval_id}"
),
]
]
reply_markup = InlineKeyboardMarkup(keyboard)
approval_message = await self._reply_text_safe(
update.message,
reply.content,
reply_markup=reply_markup,
)
if (
approval_message is not None
and getattr(approval_message, "message_id", None) is not None
):
self._approval_messages[reply.approval_id] = (
chat_id,
str(approval_message.message_id),
)
if reply.images:
await self._send_images_with_bot(context.bot, chat_id, reply.images)
else:
# No approval needed, just send the content
await self._reply_text_safe(
update.message,
reply.content,
)
if reply.images:
await self._send_images_with_bot(context.bot, chat_id, reply.images)
else:
# Plain string response (backward compatibility)
await self._reply_text_safe(update.message, reply)
@staticmethod
def _photo_payload_from_url(image_url: str) -> str | InputFile:
"""Convert a URL/data URL into a Telegram send_photo payload."""
if not image_url.startswith("data:"):
return image_url
header, encoded = image_url.split(",", 1)
if ";base64" not in header:
raise ValueError("Unsupported non-base64 data URL")
media_type = "image/jpeg"
if header.startswith("data:"):
media_type = header[5:].split(";", 1)[0] or media_type
payload = base64.b64decode(encoded)
extension = mimetypes.guess_extension(media_type) or ".jpg"
return InputFile(payload, filename=f"reference{extension}")
async def _send_images_with_bot(
self, bot: Any, chat_id: str, image_urls: list[str]
) -> list[dict[str, str]]:
"""Send images using a specific bot instance and collect metadata."""
sent: list[dict[str, str]] = []
for image_url in image_urls:
try:
payload = self._photo_payload_from_url(image_url)
message = await bot.send_photo(chat_id=chat_id, photo=payload)
sent.append(
{
"message_id": str(message.message_id),
"timestamp": dt.now(UTC).isoformat(),
}
)
except Exception as exc:
logger.warning("Failed to send reference image: %s", exc)
return sent
async def _extract_image_data_urls(
self,
update: Update,
context: ContextTypes.DEFAULT_TYPE,
) -> list[str]:
"""Extract Telegram photo attachments as data URLs."""
if not update.message or not update.message.photo:
return []
image_urls: list[str] = []
# Telegram provides sizes from smallest to largest.
best_photo = update.message.photo[-1]
try:
telegram_file = await context.bot.get_file(best_photo.file_id)
payload: bytes | None = None
download_as_bytearray = getattr(
telegram_file, "download_as_bytearray", None
)
if callable(download_as_bytearray):
payload = bytes(await download_as_bytearray())
if payload:
encoded = base64.b64encode(payload).decode("ascii")
image_urls.append(f"data:image/jpeg;base64,{encoded}")
except Exception as exc:
logger.warning("Failed to extract photo attachment: %s", exc)
return image_urls
async def _handle_callback_query(
self, update: Update, context: ContextTypes.DEFAULT_TYPE
) -> None:
"""Handle button press callbacks for approval decisions."""
if not update.callback_query:
return
query = update.callback_query
chat_id = str(query.message.chat.id) if query.message else None
if not chat_id or not query.data:
await query.answer("Invalid request.")
return
# Parse callback data: format is "approve:approval_id" or "reject:approval_id"
try:
decision, approval_id = query.data.split(":", 1)
except ValueError:
await query.answer("Invalid callback data.")
return
if decision not in ("approve", "reject"):
await query.answer("Unknown action.")
return
# Answer the callback query immediately to remove button loading state
await query.answer("Processing...")
# Format as text command and send to orchestrator
command_text = f"{decision} {approval_id}"
logger.info(
"Button press from user %s in chat %s: %s",
update.effective_user,
chat_id,
command_text,
)
try:
bound_self = getattr(self._handler, "__self__", None)
if (
bound_self is not None
and bound_self.__class__.__name__ == "Orchestrator"
):
reply = await self._handler(
chat_id,
command_text,
message_context={
"platform": "telegram",
"chat_type": (
getattr(query.message.chat, "type", None)
if query.message
else None
),
"effective_user_id": getattr(update.effective_user, "id", None),
},
)
else:
reply = await self._handler(command_text)
except Exception as exc:
logger.exception("Error from LLM handler during callback: %s", exc)
reply = "⚠️ Sorry, I encountered an error processing your decision."
# Extract content if reply is MessageResponse
reply_text = reply.content if isinstance(reply, MessageResponse) else reply
self._approval_messages.pop(approval_id, None)
# Keep final responses as normal messages after approval handling.
if chat_id and reply_text:
await self._send_message_safe(context.bot, chat_id, str(reply_text))
async def notify_tool_status(
self,
user_id: str,
status: str,
tool_name: str,
*,
approval_id: str | None = None,
detail: str | None = None,
) -> None:
"""Publish interim tool lifecycle feedback to Telegram users."""
if status == "running":
text = f"🔨 Running: `{tool_name}`"
elif status == "failed":
text = f"❌ Failed: `{tool_name}`"
if detail:
text += f"\n{detail}"
else:
return
bot = self._app.bot if self._app is not None else None
if (
status == "running"
and approval_id
and approval_id in self._approval_messages
and bot is not None
):
approval_chat_id, approval_message_id = self._approval_messages[approval_id]
try:
await self._edit_chat_message_text_safe(
bot,
approval_chat_id,
approval_message_id,
text,
)
return
except Exception as exc:
logger.warning(
"Could not edit approval message for running status: %s", exc
)
if bot is not None:
await self._send_message_safe(bot, user_id, text)
return
await self.send_message(user_id, text)
# ------------------------------------------------------------------
# Lifecycle
# ------------------------------------------------------------------
async def start(self) -> None:
"""Build the Telegram application and start polling for updates."""
self._stop_event = asyncio.Event()
self._app = Application.builder().token(self._config.bot_token).build()
# Catch-all for slash commands (/start, /status, /clear, /tools, /reload, …).
self._app.add_handler(MessageHandler(filters.COMMAND, self._handle_command))
self._app.add_handler(
MessageHandler(
(filters.TEXT | filters.PHOTO) & ~filters.COMMAND, self._handle_message
)
)
self._app.add_handler(CallbackQueryHandler(self._handle_callback_query))
logger.info("Starting Telegram bot (polling)…")
await self._app.initialize()
await self._app.start()
updater = self._app.updater
if updater is None:
raise RuntimeError("Telegram updater is unavailable")
await updater.start_polling(drop_pending_updates=True)
logger.info("Telegram bot is running. Press Ctrl+C to stop.")
# Keep running until stop() signals shutdown.
await self._stop_event.wait()
async def send_message(self, user_id: str, text: str) -> dict:
"""Send a direct message to a specific user.
Uses the Markdown parsing with fallback to plain text on parse errors,
consistent with reply and edit methods.
Args:
user_id: Telegram chat_id as string.
text: Message text to send.
Returns:
Dict with keys: message_id, timestamp, status, user_id.
Raises:
RuntimeError: If the Telegram app cannot be initialized.
BadRequest: If send fails (invalid chat_id, permissions, etc.).
"""
# Initialize the app if not already done
if self._app is None:
self._app = Application.builder().token(self._config.bot_token).build()
await self._app.initialize()
try:
# Try to send with Markdown formatting first
try:
message = await self._app.bot.send_message(
chat_id=user_id,
text=text,
parse_mode=MARKDOWN_PARSE_MODE,
)
except BadRequest as exc:
if "Can't parse entities" not in str(exc):
raise
# Retry without Markdown on parse error
logger.warning(
"Markdown parse failed in send_message, retrying plain text: %s",
exc,
)
message = await self._app.bot.send_message(chat_id=user_id, text=text)
return {
"message_id": str(message.message_id),
"timestamp": dt.now(UTC).isoformat(),
"status": "sent",
"user_id": user_id,
}
except BadRequest as exc:
logger.error(
"Failed to send message to user %s: %s",
user_id,
exc,
)
raise
async def send_images(self, user_id: str, image_urls: list[str]) -> dict:
"""Send one or more images to a specific Telegram chat."""
if self._app is None:
self._app = Application.builder().token(self._config.bot_token).build()
await self._app.initialize()
sent_items = await self._send_images_with_bot(
self._app.bot, user_id, image_urls
)
return {
"status": "sent",
"user_id": user_id,
"count": len(sent_items),
"items": sent_items,
}
async def send_file(self, user_id: str, file_path: str) -> dict:
"""Send a local file to a specific Telegram chat as a document."""
resolved_path = Path(file_path).expanduser()
if not resolved_path.exists() or not resolved_path.is_file():
raise FileNotFoundError(f"File not found: {file_path}")
if self._app is None:
self._app = Application.builder().token(self._config.bot_token).build()
await self._app.initialize()
try:
with resolved_path.open("rb") as handle:
payload = InputFile(handle, filename=resolved_path.name)
message = await self._app.bot.send_document(
chat_id=user_id,
document=payload,
)
document = getattr(message, "document", None)
file_id = getattr(document, "file_id", None)
return {
"message_id": str(message.message_id),
"timestamp": dt.now(UTC).isoformat(),
"status": "sent",
"user_id": user_id,
"file_name": resolved_path.name,
"file_id": str(file_id) if file_id else None,
}
except BadRequest as exc:
logger.error(
"Failed to send file to user %s: %s",
user_id,
exc,
)
raise
async def stop(self) -> None:
"""Stop polling and shut down the Telegram application."""
if self._app is None:
return
if self._stop_event is not None:
self._stop_event.set()
logger.info("Stopping Telegram bot…")
updater = self._app.updater
if updater is not None:
await updater.stop()
await self._app.stop()
await self._app.shutdown()
self._app = None
self._stop_event = None
|