"""CLI: execute exactly one task spec."""

from __future__ import annotations

import argparse
import json
import sys

from agent_harness.runner import run_task
from agent_harness.taskspec import TaskSpec, TaskSpecError


def main(argv: list[str] | None = None) -> int:
    parser = argparse.ArgumentParser(prog="executor-worker")
    sub = parser.add_subparsers(dest="command", required=True)
    run = sub.add_parser("run", help="Execute one task from a JSON spec file")
    run.add_argument("--task-file", required=True)
    run.add_argument("--no-hub", action="store_true", help="Skip hub reporting")
    scan = sub.add_parser(
        "mail-scan", help="Deterministic company-mailbox scan (no LLM session)"
    )
    scan.add_argument("--target-repo", required=True)
    scan.add_argument("--config", default="integrations/mailbox-binky-company.yml")
    scan.add_argument("--out", default="mailmeta/reports")
    scan.add_argument("--no-hub", action="store_true", help="Skip hub reporting")
    args = parser.parse_args(argv)

    if args.command == "mail-scan":
        from pathlib import Path

        from agent_harness.mailscan import run_mail_scan

        result = run_mail_scan(
            target_repo=Path(args.target_repo).expanduser(),
            config=args.config,
            out_dir=args.out,
            report_to_hub=not args.no_hub,
        )
        print(
            json.dumps(
                {
                    "ok": result.ok,
                    "report": result.report_path,
                    "new_messages": result.new_messages,
                    "auth_lane": result.auth_lane,
                    "reason": result.reason,
                },
                indent=2,
            )
        )
        return 0 if result.ok else 1

    try:
        spec = TaskSpec.from_file(args.task_file)
    except (TaskSpecError, OSError, json.JSONDecodeError) as exc:
        print(f"invalid task spec: {exc}", file=sys.stderr)
        return 2

    result = run_task(spec, report_to_hub=not args.no_hub)
    print(
        json.dumps(
            {
                "ok": result.ok,
                "committed": result.committed,
                "head_after": result.head_after,
                "persona_source": result.persona_source,
                "reason": result.reason,
            },
            indent=2,
        )
    )
    return 0 if result.ok else 1


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