#!/usr/bin/env python3
"""Write evidences/agent-runs/evidence-agent.json from the collector summary.

Fast-path handoff writer for evidence-agent: after the standard collector
(collect_evidence.py) succeeds, this script converts
evidences/evidence_summary_for_agent.json into the evidence-agent output
contract without loading any evidence artifact into the chat context.

Run from the workspace root (the directory containing evidences/).
"""
from __future__ import annotations

import json
import sys
from pathlib import Path


def main() -> int:
    root = Path("evidences")
    summary_path = root / "evidence_summary_for_agent.json"
    if not summary_path.is_file():
        print(
            f"error: {summary_path} not found; run the standard collector first "
            "or write evidence-agent.json manually from collected evidence",
            file=sys.stderr,
        )
        return 1
    summary = json.loads(summary_path.read_text(encoding="utf-8"))
    agent_dir = root / "agent-runs"
    agent_dir.mkdir(parents=True, exist_ok=True)

    evidence_files = sorted(
        str(path)
        for path in root.glob("*.json")
        if path.is_file()
    )
    txt_summary = root / "evidence_summary_for_agent.txt"
    if txt_summary.exists():
        evidence_files.append(str(txt_summary))
    perf = root / "perf.jsonl"
    if perf.exists():
        evidence_files.append(str(perf))

    payload = {
        "agent": "evidence-agent",
        "status": summary.get("status") or "ok",
        "summary": summary.get("summary")
        or "Standard collector completed; see evidence artifacts.",
        "scope": summary.get("scope") or {},
        "evidence_files": evidence_files,
        "missing_evidence": summary.get("missing_evidence") or [],
        "warnings": summary.get("warnings") or [],
        "next_recommended_skills": summary.get("next_recommended_skills") or [],
        "critical_evidence_hints": summary.get("critical_evidence_hints") or [],
    }
    (agent_dir / "evidence-agent.json").write_text(
        json.dumps(payload, ensure_ascii=False, indent=2) + "\n",
        encoding="utf-8",
    )
    print(
        "evidence-agent.json written:",
        f"status={payload['status']}",
        f"files={len(payload['evidence_files'])}",
        f"hints={len(payload['critical_evidence_hints'])}",
        f"missing={len(payload['missing_evidence'])}",
    )
    return 0


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