import re


def bare_jid_from(msg) -> str:
    from_jid = msg["from"]
    from slixmpp import JID

    if isinstance(from_jid, JID):
        return from_jid.bare
    return str(from_jid).split("/")[0]


def extract_stanza_id(msg) -> str:
    stanza_ids = msg["stanza_id"]
    if stanza_ids:
        for sid in stanza_ids.values():
            return sid
    return msg["id"]


def extract_thread_id(msg) -> str | None:
    return msg["thread"] or None


def extract_muc_info(msg, msg_type: str) -> tuple[str | None, str | None]:
    if msg_type != "groupchat":
        return None, None
    room_jid = msg["mucroom"]
    muc_nick = msg["mucnick"]
    return room_jid, muc_nick


def is_delayed_message(msg) -> bool:
    delay = msg["delay"]
    if delay and delay.get("stamp"):
        return True
    return False


def check_bot_mention(body: str, nick: str) -> bool:
    if not body or not nick:
        return False
    pattern = re.compile(rf"\b{re.escape(nick)}\b[:,\s]?", re.IGNORECASE)
    return bool(pattern.search(body))