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#!/usr/bin/env python3
"""Validate FinGovBench JSONL and graph references."""

from __future__ import annotations

import argparse
import json
from collections import defaultdict, deque
from datetime import datetime
from pathlib import Path

import jsonschema


ROOT = Path(__file__).resolve().parents[1]


def main() -> None:
    parser = argparse.ArgumentParser()
    parser.add_argument("dataset", type=Path)
    args = parser.parse_args()
    schema = json.loads((ROOT / "schema/case.schema.json").read_text())
    rows = [json.loads(line) for line in args.dataset.read_text().splitlines() if line.strip()]
    ids = [row["case_id"] for row in rows]
    assert len(ids) == len(set(ids)), "duplicate case_id"
    for row in rows:
        jsonschema.validate(row, schema)
        raw_node_ids = [node["node_id"] for node in row["graph"]["nodes"]]
        assert len(raw_node_ids) == len(set(raw_node_ids)), (row["case_id"], "duplicate node")
        node_ids = set(raw_node_ids)
        adjacency: dict[str, list[str]] = defaultdict(list)
        indegree = {node_id: 0 for node_id in node_ids}
        for edge in row["graph"]["edges"]:
            assert edge["source"] in node_ids, (row["case_id"], edge)
            assert edge["target"] in node_ids, (row["case_id"], edge)
            adjacency[edge["source"]].append(edge["target"])
            indegree[edge["target"]] += 1
        queue = deque(node for node, degree in indegree.items() if degree == 0)
        visited = 0
        while queue:
            visited += 1
            for child in adjacency[queue.popleft()]:
                indegree[child] -= 1
                if indegree[child] == 0:
                    queue.append(child)
        assert visited == len(node_ids), (row["case_id"], "graph is not acyclic")
        for measurement in row["telemetry"]["local_measurements"]:
            assert measurement["node_id"] in node_ids, (row["case_id"], measurement)
            lo, hi = measurement["defect_interval"]
            assert lo <= hi, (row["case_id"], measurement)
        for key in ("affected_nodes", "revalidation_scope"):
            assert set(row["gold"][key]) <= node_ids, (row["case_id"], key)
        failed = [m["node_id"] for m in row["telemetry"]["local_measurements"] if m["status"] == "fail"]
        assert bool(failed) == bool(row["gold"]["iceberg_present"]), (row["case_id"], "telemetry/gold iceberg mismatch")
        if not row["gold"]["iceberg_present"]:
            assert not row["gold"]["affected_nodes"] and not row["gold"]["revalidation_scope"], row["case_id"]
            assert row["gold"]["release_permitted"], row["case_id"]
        if row["gold"]["iceberg_visibility"] == "visible":
            assert row["telemetry"]["terminal_measurement"]["status"] == "fail", row["case_id"]
        if row["case_origin"] == "genuine_revision":
            metadata = row["revision_metadata"]
            assert metadata["old_accession"] != metadata["new_accession"], row["case_id"]
            assert metadata["old_filed"] < metadata["new_filed"], row["case_id"]
            assert metadata["old_value"] != metadata["new_value"], row["case_id"]
            assert datetime.fromisoformat(row["as_of"].replace("Z", "+00:00")).date().isoformat() >= metadata["new_filed"], row["case_id"]
        if any(not control.get("compensable", True) and control["status"] == "failed" for control in row["red_line_controls"]):
            assert not row["gold"]["release_permitted"], row["case_id"]
    print(json.dumps({"valid": True, "cases": len(rows), "splits": sorted(set(row["split"] for row in rows))}))


if __name__ == "__main__":
    main()