Import AITURK IDE 1.0.0-beta.1 from Hermes 63279301; preserve MIT license

plugins/platforms/telegram/telegram_ids.py

@@ -0,0 +1,51 @@
+"""Helpers for Telegram Bot API chat identifiers.
+
+Telegram's Bot API accepts a ``chat_id`` in two forms: a numeric ID (an int,
+e.g. ``123456789`` for a DM or ``-1001234567890`` for a channel/supergroup) or
+an ``@username`` string for public channels and groups. Hermes historically
+coerced every ``chat_id`` with ``int()``, which crashes on the username form
+(``ValueError: invalid literal for int()``). Normalizing here lets numeric IDs
+pass through as ints while usernames pass through unchanged — both are valid
+values for the Bot API.
+"""
+
+from __future__ import annotations
+
+import re
+from typing import Any, Union
+
+# Telegram usernames are 5-32 chars: letters, digits, underscores, with a
+# leading "@". (Telegram also permits 4-char usernames for some legacy/official
+# accounts, but the 5-32 public rule is the safe lower bound for routing.)
+_TELEGRAM_USERNAME_RE = re.compile(r"@[A-Za-z0-9_]{4,32}")
+
+
+def normalize_telegram_chat_id(chat_id: Any) -> Union[int, str]:
+    """Return a Bot API-compatible chat_id.
+
+    Numeric values (incl. negative channel IDs) are returned as ``int``; any
+    non-numeric value (e.g. an ``@username``) is returned as a stripped string.
+    Telegram's Bot API accepts both, so this never raises on a username the way
+    a bare ``int(chat_id)`` would.
+    """
+    chat_id_str = str(chat_id).strip()
+    try:
+        return int(chat_id_str)
+    except (TypeError, ValueError):
+        return chat_id_str
+
+
+def telegram_chat_id_key(chat_id: Any) -> str:
+    """Stable string key for a chat_id (for dict keys / persisted state)."""
+    return str(normalize_telegram_chat_id(chat_id))
+
+
+def looks_like_telegram_username(chat_id: Any) -> bool:
+    """True when the value is an ``@username``-format Telegram chat identifier."""
+    return bool(_TELEGRAM_USERNAME_RE.fullmatch(str(chat_id).strip()))
+
+
+def parse_telegram_username_target(target_ref: Any) -> Union[str, None]:
+    """Return the value when it is an ``@username`` target, else ``None``."""
+    value = str(target_ref).strip()
+    return value if looks_like_telegram_username(value) else None