Distributed Server Health Watchdog & Slack Alert Daemon

import axios from 'axios';

export interface TargetConfig {
  name: string;
  url: string;
  timeoutMs: number;
}

export async function pingTarget(target: TargetConfig): Promise<{ healthy: boolean; statusCode?: number; latencyMs: number }> {
  const start = Date.now();
  try {
    const res = await axios.get(target.url, { timeout: target.timeoutMs });
    return { healthy: res.status === 200, statusCode: res.status, latencyMs: Date.now() - start };
  } catch (err: any) {
    return { healthy: false, statusCode: err.response?.status, latencyMs: Date.now() - start };
  }
}