#!/usr/bin/env python3
"""
alert_triage_loop.py — Scheduled runner for the alert_triage_graph.

Calls the sofiia-supervisor API (POST /v1/graphs/alert_triage/runs) and
polls until the run completes, then prints the digest.

Usage:
  python3 ops/scripts/alert_triage_loop.py [--dry-run] [--supervisor-url URL]

Environment:
  SUPERVISOR_URL       default: http://sofiia-supervisor:8084
  SUPERVISOR_API_KEY   optional API key (Bearer token)
  ALERT_TRIAGE_WS_ID  workspace_id (default: "default")
  ALERT_TRIAGE_AGENT  agent_id (default: "sofiia")

Cron example (NODA2):
  */5 * * * * python3 /opt/daarion/ops/scripts/alert_triage_loop.py >> /var/log/alert_triage.log 2>&1
"""
import argparse
import json
import logging
import os
import sys
import time
import urllib.request
import urllib.error

logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s [%(levelname)s] %(message)s",
)
logger = logging.getLogger(__name__)

SUPERVISOR_URL = os.getenv("SUPERVISOR_URL", "http://sofiia-supervisor:8084")
API_KEY = os.getenv("SUPERVISOR_API_KEY", "")
WORKSPACE_ID = os.getenv("ALERT_TRIAGE_WS_ID", "default")
AGENT_ID = os.getenv("ALERT_TRIAGE_AGENT", "sofiia")

MAX_POLL_SECONDS = 220
POLL_INTERVAL_SECONDS = 5


def _headers() -> dict:
    h = {"Content-Type": "application/json", "Accept": "application/json"}
    if API_KEY:
        h["Authorization"] = f"Bearer {API_KEY}"
    return h


def _http_post(url: str, body: dict) -> dict:
    data = json.dumps(body).encode()
    req = urllib.request.Request(url, data=data, headers=_headers(), method="POST")
    with urllib.request.urlopen(req, timeout=30) as resp:
        return json.loads(resp.read())


def _http_get(url: str) -> dict:
    req = urllib.request.Request(url, headers=_headers(), method="GET")
    with urllib.request.urlopen(req, timeout=30) as resp:
        return json.loads(resp.read())


def start_run(dry_run: bool = False) -> str:
    payload = {
        "workspace_id": WORKSPACE_ID,
        "user_id": "scheduler",
        "agent_id": AGENT_ID,
        "input": {
            "policy_profile": "default",
            "dry_run": dry_run,
            "workspace_id": WORKSPACE_ID,
            "agent_id": AGENT_ID,
        },
    }
    url = f"{SUPERVISOR_URL}/v1/graphs/alert_triage/runs"
    logger.info("Starting alert_triage run (dry_run=%s)", dry_run)
    resp = _http_post(url, payload)
    run_id = resp.get("run_id")
    if not run_id:
        raise RuntimeError(f"No run_id in response: {resp}")
    logger.info("Run started: %s (status=%s)", run_id, resp.get("status"))
    return run_id


def poll_run(run_id: str) -> dict:
    url = f"{SUPERVISOR_URL}/v1/runs/{run_id}"
    deadline = time.monotonic() + MAX_POLL_SECONDS
    while time.monotonic() < deadline:
        resp = _http_get(url)
        status = resp.get("status", "unknown")
        if status in ("succeeded", "failed", "cancelled"):
            return resp
        logger.debug("Run %s status=%s — waiting…", run_id, status)
        time.sleep(POLL_INTERVAL_SECONDS)
    raise TimeoutError(f"Run {run_id} did not complete in {MAX_POLL_SECONDS}s")


def main():
    parser = argparse.ArgumentParser(description="Alert Triage Loop runner")
    parser.add_argument("--dry-run", action="store_true", help="Simulate without writes")
    parser.add_argument("--supervisor-url", default=SUPERVISOR_URL)
    args = parser.parse_args()

    global SUPERVISOR_URL
    SUPERVISOR_URL = args.supervisor_url

    try:
        run_id = start_run(dry_run=args.dry_run)
        result = poll_run(run_id)
        status = result.get("status")
        run_result = result.get("result") or {}

        digest = run_result.get("digest_md", "")
        summary = run_result.get("result_summary") or {}

        logger.info(
            "Alert triage run %s completed: status=%s processed=%s "
            "created=%s updated=%s skipped=%s errors=%s triages=%s",
            run_id, status,
            summary.get("processed", "?"),
            summary.get("created_incidents", "?"),
            summary.get("updated_incidents", "?"),
            summary.get("skipped", "?"),
            summary.get("errors", "?"),
            summary.get("triage_runs", "?"),
        )

        if digest:
            print("\n" + digest)

        if status == "failed":
            logger.error("Run %s FAILED", run_id)
            sys.exit(1)

    except urllib.error.URLError as e:
        logger.error("Cannot reach supervisor at %s: %s", SUPERVISOR_URL, e)
        sys.exit(2)
    except TimeoutError as e:
        logger.error("Timeout: %s", e)
        sys.exit(3)
    except Exception as e:
        logger.error("Unexpected error: %s", e)
        sys.exit(4)


if __name__ == "__main__":
    main()