from __future__ import annotations

import argparse
import hashlib
import json
from pathlib import Path


def replay(public_rollout_id: str, root: Path | None = None) -> dict:
    root = root or Path(__file__).resolve().parent
    records = json.loads((root / "data/records.json").read_text())
    record = next(row for row in records if row["public_rollout_id"] == public_rollout_id)
    trace = root / record["trace_file"]
    assert hashlib.sha256(trace.read_bytes()).hexdigest() == record["trace_hash"]
    for media in record["media_refs"]:
        path = root / media["path"]
        assert hashlib.sha256(path.read_bytes()).hexdigest() == media["sha256"]
    return {
        "public_rollout_id": public_rollout_id,
        "trace_event_count": len(trace.read_text().splitlines()),
        "replay_status": record["replay_status"],
    }


def main() -> None:
    parser = argparse.ArgumentParser()
    parser.add_argument("--rollout-id", required=True)
    args = parser.parse_args()
    print(json.dumps(replay(args.rollout_id), indent=2))


if __name__ == "__main__":
    main()