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feat(telegram): render tool hints as expandable blockquotes (#2752)

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Flo 2026-04-03 13:27:53 +03:00 committed by GitHub
parent a662ace8dd
commit a6aa0b7932
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1 changed files with 20 additions and 5 deletions
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nanobot/channels/telegram.py
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@ -28,6 +28,16 @@ TELEGRAM_MAX_MESSAGE_LEN = 4000 # Telegram message character limit
TELEGRAM_REPLY_CONTEXT_MAX_LEN = TELEGRAM_MAX_MESSAGE_LEN # Max length for reply context in user message
def _escape_telegram_html(text: str) -> str:
"""Escape text for Telegram HTML parse mode."""
return text.replace("&", "&amp;").replace("<", "&lt;").replace(">", "&gt;")
def _tool_hint_to_telegram_blockquote(text: str) -> str:
"""Render tool hints as an expandable blockquote (collapsed by default)."""
return f"<blockquote expandable>{_escape_telegram_html(text)}</blockquote>" if text else ""
def _strip_md(s: str) -> str:
"""Strip markdown inline formatting from text."""
s = re.sub(r'\*\*(.+?)\*\*', r'\1', s)
@ -120,7 +130,7 @@ def _markdown_to_telegram_html(text: str) -> str:
text = re.sub(r'^>\s*(.*)$', r'\1', text, flags=re.MULTILINE)
# 5. Escape HTML special characters
text = text.replace("&", "&amp;").replace("<", "&lt;").replace(">", "&gt;")
text = _escape_telegram_html(text)
# 6. Links [text](url) - must be before bold/italic to handle nested cases
text = re.sub(r'\[([^\]]+)\]\(([^)]+)\)', r'<a href="\2">\1</a>', text)
@ -141,13 +151,13 @@ def _markdown_to_telegram_html(text: str) -> str:
# 11. Restore inline code with HTML tags
for i, code in enumerate(inline_codes):
# Escape HTML in code content
escaped = code.replace("&", "&amp;").replace("<", "&lt;").replace(">", "&gt;")
escaped = _escape_telegram_html(code)
text = text.replace(f"\x00IC{i}\x00", f"<code>{escaped}</code>")
# 12. Restore code blocks with HTML tags
for i, code in enumerate(code_blocks):
# Escape HTML in code content
escaped = code.replace("&", "&amp;").replace("<", "&lt;").replace(">", "&gt;")
escaped = _escape_telegram_html(code)
text = text.replace(f"\x00CB{i}\x00", f"<pre><code>{escaped}</code></pre>")
return text
@ -433,8 +443,12 @@ class TelegramChannel(BaseChannel):
# Send text content
if msg.content and msg.content != "[empty message]":
render_as_blockquote = bool(msg.metadata.get("_tool_hint"))
for chunk in split_message(msg.content, TELEGRAM_MAX_MESSAGE_LEN):
await self._send_text(chat_id, chunk, reply_params, thread_kwargs)
await self._send_text(
chat_id, chunk, reply_params, thread_kwargs,
render_as_blockquote=render_as_blockquote,
)
async def _call_with_retry(self, fn, *args, **kwargs):
"""Call an async Telegram API function with retry on pool/network timeout and RetryAfter."""
@ -468,10 +482,11 @@ class TelegramChannel(BaseChannel):
text: str,
reply_params=None,
thread_kwargs: dict | None = None,
render_as_blockquote: bool = False,
) -> None:
"""Send a plain text message with HTML fallback."""
try:
html = _markdown_to_telegram_html(text)
html = _tool_hint_to_telegram_blockquote(text) if render_as_blockquote else _markdown_to_telegram_html(text)
await self._call_with_retry(
self._app.bot.send_message,
chat_id=chat_id, text=html, parse_mode="HTML",