"""Illustrative support-app logic; reads saved answers and never takes actions."""
import argparse
import json
from pathlib import Path


def decide(answers):
    return {"route": answers["department"]["choice"],
            "refund_review": answers["refund"]["noul"] >= .5,
            "urgent_queue": answers["severity"]["score"] >= 1.5}


def main():
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument("comparison_directory")
    args = parser.parse_args()
    root = Path(args.comparison_directory)
    summary = json.loads((root/"summary.json").read_text(encoding="utf-8"))
    if summary["status"] != "complete":
        raise ValueError("Use a completed comparison; do not hide provider failures")
    combined, fingerprints = {}, {}
    for provider in summary["providers"]:
        records = [json.loads(line) for line in (root/f"{provider}-responses.jsonl").read_text(encoding="utf-8").splitlines()]
        for record in records:
            key = record["case_id"]
            if key in fingerprints and fingerprints[key] != record["request_sha256"]:
                raise ValueError("Cannot compare decisions on different requests")
            fingerprints[key] = record["request_sha256"]
            combined.setdefault(key, {})[provider] = decide(record["response"]["answers"])
    for key, decisions in combined.items():
        if set(decisions) != set(summary["providers"]):
            raise ValueError("Incomplete provider coverage")
        distinct = {json.dumps(d, sort_keys=True) for d in decisions.values()}
        print(json.dumps({"case_id": key, "decisions": decisions, "providers_disagree": len(distinct)>1}))


if __name__ == "__main__":
    main()