from __future__ import annotations


def jid_to_thread_key(channel_id: str, jid: str, scope: str = "per_sender") -> str:
    if scope == "global":
        return f"{channel_id}:global"
    if "@g.us" in jid:
        return f"{channel_id}:group:{jid}"
    return f"{channel_id}:dm:{_extract_sender_number(jid)}"


def _extract_sender_number(jid: str) -> str:
    return jid.split("@")[0]


def jid_to_chat_type(jid: str) -> str:
    if "@g.us" in jid:
        return "group"
    if "@broadcast" in jid:
        return "broadcast"
    return "direct"


def normalize_phone(phone: str) -> str:
    return phone.lstrip("+").replace(" ", "").replace("-", "")


def resolve_session_scope(config: dict) -> str:
    scope = config.get("sessionScope", config.get("session_scope", "per_sender"))
    if scope not in ("per_sender", "global"):
        return "per_sender"
    return scope