"""Offline verification: python code/restore_and_verify.py [--bfs]."""
import hashlib
import json
import sys
from pathlib import Path
from minigrid_fairness import new_env, restore, snapshot, validate_task, shortest_solution

root = Path(__file__).resolve().parents[1]
checks = json.loads((root / "checksums.json").read_text())
for name, digest in checks.items():
    assert hashlib.sha256((root / name).read_bytes()).hexdigest() == digest, name
rows = {}
env = new_env()
for split in ("train", "evaluation"):
    rows[split] = [json.loads(line) for line in (root / "fairness" / (split + ".jsonl")).read_text().splitlines()]
    ids = set()
    for row in rows[split]:
        validate_task(row, split=split)
        restore(env, row["initial_state"])
        assert snapshot(env) == row["initial_state"]
        image = env.observation(env.unwrapped.gen_obs())["image"]
        assert image.shape == (448, 448, 3)
        assert hashlib.sha256(image.tobytes()).hexdigest() == row["metadata"]["image_sha256"]
        if "--bfs" in sys.argv:
            assert len(shortest_solution(env, row["initial_state"])) == row["metadata"]["shortest_length"]
        ids.add(row["metadata"]["task_id"])
    assert len(ids) == len(rows[split])
assert len(rows["evaluation"]) == 256
assert not ({r["metadata"]["split_group_id"] for r in rows["train"]} & {r["metadata"]["split_group_id"] for r in rows["evaluation"]})
env.close()
print({"counts": {k: len(v) for k,v in rows.items()}, "checksums": "verified", "restoration": "exact", "rgb": "exact", "split_overlap": 0})