#!/usr/bin/env python3
"""
Evaluate whether a candidate replay result may move to shadow/canary.

This CLI is intentionally read-only. It rejects contract probes and other
not-replacement-evidence outputs even when they satisfy the JSON contract.
"""

from __future__ import annotations

import argparse
import json
import sys
from pathlib import Path
from typing import Any


ROOT = Path(__file__).resolve().parents[2]
API_SRC = ROOT / "apps" / "api"
sys.path.insert(0, str(API_SRC))

from src.services.agent_replay_promotion_gate import (  # noqa: E402
    evaluate_agent_replay_promotion_gate,
)


def main() -> int:
    parser = argparse.ArgumentParser(
        description="Evaluate the AWOOOI Agent replay promotion gate."
    )
    parser.add_argument("--candidate-id", required=True, help="candidate_id to gate")
    parser.add_argument("--scorecard", required=True, help="scorecard report JSON")
    parser.add_argument("--contract-report", required=True, help="contract report JSON")
    parser.add_argument("--raw-results", required=True, help="candidate raw result JSONL")
    parser.add_argument(
        "--import-report",
        help="optional external-result import report JSON; required for NeMo/Nemotron",
    )
    parser.add_argument(
        "--target-stage",
        default="shadow",
        choices=("shadow", "canary"),
        help="target promotion stage",
    )
    parser.add_argument("--output", help="promotion gate report JSON")
    args = parser.parse_args()

    report = evaluate_agent_replay_promotion_gate(
        candidate_id=args.candidate_id,
        scorecard_report=_read_json(Path(args.scorecard)),
        contract_report=_read_json(Path(args.contract_report)),
        raw_results=_read_jsonl(Path(args.raw_results)),
        import_report=_read_json(Path(args.import_report))
        if args.import_report
        else None,
        target_stage=args.target_stage,
    ).to_dict()
    payload = json.dumps(report, ensure_ascii=False, indent=2, sort_keys=True)
    if args.output:
        Path(args.output).write_text(payload + "\n", encoding="utf-8")
    else:
        print(payload)

    return 0 if report["approved"] else 2


def _read_json(path: Path) -> dict[str, Any]:
    with path.open(encoding="utf-8") as handle:
        return json.load(handle)


def _read_jsonl(path: Path) -> list[dict[str, Any]]:
    records: list[dict[str, Any]] = []
    with path.open(encoding="utf-8") as handle:
        for line_number, line in enumerate(handle, start=1):
            line = line.strip()
            if not line or line.startswith("#"):
                continue
            try:
                records.append(json.loads(line))
            except Exception as exc:
                raise SystemExit(f"{path}:{line_number}: invalid JSONL: {exc}") from exc
    return records


if __name__ == "__main__":
    raise SystemExit(main())