"""The ten pilot tasks (L1) are a recorded experiment: their instances must not change. The
fingerprints were computed inside the pilot image (sha256:7158ba87...)."""

import hashlib
import json
import os
import random

import pytest

from terminal_desk.families import ALL_FAMILIES, instance_seed

PINNED = json.load(open(os.path.join(os.path.dirname(__file__), "fixtures", "pilot_fingerprints.json")))


def fingerprint(task_id: str) -> str:
    base = task_id.rsplit("-i", 1)[0] if "-i" in task_id.rsplit("-L", 1)[1] else task_id
    fid, lv = base.rsplit("-L", 1)
    b = ALL_FAMILIES[fid].build(int(lv), random.Random(instance_seed(task_id)))
    h = hashlib.sha256(b.instruction.encode())
    for name in sorted(b.files):
        c = b.files[name]
        h.update(name.encode())
        h.update(c if isinstance(c, bytes) else c.encode())
    return h.hexdigest()[:16]


@pytest.mark.parametrize("task_id", sorted(PINNED))
def test_pilot_instance_unchanged(task_id):
    assert fingerprint(task_id) == PINNED[task_id]