"""Database of Vorbis setups used by the game's own WEMs (from all shipped WADs).

Each entry: stripped Wwise setup (hex), its codebook hash, decode alloc sizes, and
formats seen. Reusing a known setup guarantees hash/alloc values the game accepts.
"""
import json
import os

PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)), "data", "known_setups.json")
_DB = None


def db():
    global _DB
    if _DB is None:
        _DB = json.load(open(PATH))
    return _DB


def lookup_setup(ww_setup: bytes):
    h = ww_setup.hex()
    for e in db():
        if e["setup"] == h:
            return e
    return None