import os
from datetime import datetime, timezone
from typing import Dict, List

from .utils import load_json, save_json

ALERTS_PATH = os.path.join(os.path.dirname(__file__), "..", "..", "infra", "alerts.json")


def _timestamp() -> str:
    return datetime.now(timezone.utc).strftime("%Y-%m-%dT%H:%M:%SZ")


def oob_get_alerts(device: str) -> List[Dict]:
    alerts = load_json(ALERTS_PATH)
    return alerts.get(device, [])


def oob_add_alert(device: str, message: str) -> Dict:
    alerts = load_json(ALERTS_PATH)
    entry = alerts.get(device, [])
    event = {"timestamp": _timestamp(), "message": message}
    entry.append(event)
    alerts[device] = entry
    save_json(ALERTS_PATH, alerts)
    return event