def build_dm_session_key(email: str, account_id: str) -> str:
    return f"zoomchat:dm:{account_id}:{email}"


def build_group_session_key(channel_id: str, account_id: str) -> str:
    return f"zoomchat:group:{account_id}:{channel_id}"


def resolve_session_key(chat_type: str, peer_id: str, channel_id: str | None, account_id: str) -> str:
    if chat_type == "1on1":
        return build_dm_session_key(peer_id, account_id)
    return build_group_session_key(channel_id or peer_id, account_id)