"""Read-only checks against the installed game (skipped when it is not installed)."""
import random

import pytest

from ackit.game import Game
from ackit.inject import pack_bnk_path, is_pack
from ackit.pack import Pack
from ackit.verify.selfcheck import rebuild_identical
from ackit.wad import Wad, write_wad
from ackit.wem import split_concatenated

pytestmark = pytest.mark.game


def test_wad_roundtrip_identical(real_game_dir, tmp_path):
    g = Game(real_game_dir)
    src = g.wad("SFX")
    out = str(tmp_path / "rt.wad")
    write_wad(Wad(src), out, {})
    a, b = open(src, "rb"), open(out, "rb")
    while True:
        x, y = a.read(1 << 22), b.read(1 << 22)
        assert x == y
        if not x:
            break


def test_stream_packs_noop_identical(real_game_dir):
    g = Game(real_game_dir)
    wad = g.wad("SFX")
    w = Wad(wad)
    for e in w.entries:
        if is_pack(wad, e.hash):
            bnk = open(pack_bnk_path(wad, e.hash), "rb").read()
            payload = w.read(e.hash)
            nb, npay = Pack(bnk).rebuild(payload, {})
            assert nb == bnk and npay == payload


def test_builder_reproduces_game_wems(real_game_dir):
    g = Game(real_game_dir)
    lang = g.language()
    w = Wad(g.wad(lang))
    rnd = random.Random(5)
    n = 0
    for e in rnd.sample(w.entries, 80):
        for _, r in split_concatenated(w.read(e.hash))[0][:3]:
            assert rebuild_identical(r)
            n += 1
    assert n >= 80