"""Deterministic old/current profile files inside the test-only workspace directory."""
import struct
from pathlib import Path


def signature(words):
    value = 0x0A57C0DE
    for word in words:
        value = ((value << 5) | (value >> 27)) & 0xFFFFFFFF
        value ^= word
        value ^= value >> 16
        value = (value + 0x9E3779B9) & 0xFFFFFFFF
    return value


def main():
    root = Path(__file__).resolve().parents[2]
    target = root / "build/arrival/fixtures"
    target.mkdir(parents=True, exist_ok=True)
    words = [0] * 69
    words[0] = 0x31435653
    words[1] = 45000
    words[8] = 2
    words[9] = 300000
    words[10] = (1 << 5) | 1
    words[11] = 5
    words[64] = 10
    words[67] = words[68] = 1
    current = struct.pack("<70I", *words, signature(words))
    (target / "valid.dat").write_bytes(current)
    (target / "tampered.dat").write_bytes(current[:-4] + b"\0\0\0\0")
    (target / "wrong-magic.dat").write_bytes(b"BAD!" + current[4:])
    (target / "truncated.dat").write_bytes(current[:15])
    (target / "zero.dat").write_bytes(struct.pack("<8I", 0x31435653, 0, *([0] * 6)))
    # Reset just our own repeatable creation-test file, never a real profile directory.
    created = target / "FreshPlayer.dat"
    if created.exists():
        created.unlink()
    (target / "broken-animation.bin").write_bytes(struct.pack("<4sIIII", b"ANM1",
                                                           0xFFFFFFFF, 480, 32, 16))
    print("Prepared assembly profile fixtures in build/arrival/fixtures")


if __name__ == "__main__":
    main()