#!/usr/bin/env python3
"""Lightweight, dependency-free structural validation for release files."""
from __future__ import annotations

import json
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
REQUIRED = {"case_id", "parent_case_id", "task", "question", "prompt", "target_decision", "documents", "gold", "perturbation"}
GOLD = {"condition", "status", "control", "decision", "policy_rules", "evidence_ids", "requires_human_review"}

def main() -> None:
    files = sorted((ROOT / "data").glob("*/test.jsonl"))
    assert files, "No test JSONL files found. Run scripts/generate_v0_1.py first."
    count, instance_keys = 0, set()
    for path in files:
        for line_number, line in enumerate(path.read_text().splitlines(), 1):
            item = json.loads(line)
            assert REQUIRED <= item.keys(), f"{path}:{line_number}: missing top-level fields"
            assert GOLD <= item["gold"].keys(), f"{path}:{line_number}: missing gold fields"
            assert item["gold"]["decision"] in {"standard", "rated", "refer"}
            assert item["target_decision"] == item["gold"]["decision"]
            assert len(item["documents"]) >= 1
            instance_key = (item["task"], item["case_id"])
            assert instance_key not in instance_keys, f"duplicate task/case ID: {instance_key}"
            if item["perturbation"]["type"] != "none":
                assert item["parent_case_id"], f"{item['case_id']}: perturbation needs parent"
            instance_keys.add(instance_key); count += 1
    print(f"Validated {count} unique instances across {len(files)} configurations.")

if __name__ == "__main__":
    main()