from core.constants import SIGS


def get_ref_regex_for_sig(sig):
    """Utility function to get the regex string for a SIG reference for a named SIG. If no match is found, None will be returned."""

    for s in SIGS:
        if s.name.upper() == sig.upper():
            return s.ref_regex
    return None


def get_sig_name_from_comment_name(sig):
    """Utility function to get the name of a SIG from its "comment name". Generally these will be the same but there are
    some cases (e.g. is "TOTA" Towers, Tiles or Toilets?) where we need to transform one to the other."""

    for s in SIGS:
        if any(n.upper() == sig.upper() for n in s.comment_names):
            return s.name
    return None


# Regex matching any SIG's "comment name", i.e. how it may be referred to in spot comments
ANY_SIG_REGEX = r"(" + r"|".join(n for s in SIGS for n in s.comment_names) + r")"