import cron from 'node-cron';
import { getDb } from '../db/index.js';
import { probeStream } from './probe.js';

const probe = probeStream;

export async function runHealthCheck() {
    const db = getDb();
    const streams = db.prepare('SELECT id, url FROM streams').all();
    const update = db.prepare(
        "UPDATE streams SET last_status = ?, last_checked_at = datetime('now') WHERE id = ?"
    );
    for (const s of streams) {
        const status = await probe(s.url);
        update.run(status, s.id);
    }
    return streams.length;
}

export function scheduleHealthCheck(expr) {
    if (!expr) return null;
    return cron.schedule(expr, () => {
        runHealthCheck().catch((err) => console.error('[health]', err));
    });
}