#!/usr/bin/env node
/**
 * Local healthcheck for peardock server process supervision.
 * Checks Docker socket reachability (same as server dependency).
 * Exit 0 = healthy, 1 = unhealthy.
 *
 * Usage: node scripts/healthcheck.js
 * Docker HEALTHCHECK / systemd ExecStartPost / k8s probe compatible.
 */
import Docker from 'dockerode'

const timeoutMs = Number(process.env.HEALTHCHECK_TIMEOUT_MS) || 5000

const docker = new Docker({ socketPath: process.env.DOCKER_SOCKET || '/var/run/docker.sock' })

const timer = setTimeout(() => {
  console.error('healthcheck: timeout')
  process.exit(1)
}, timeoutMs)

try {
  await docker.ping()
  clearTimeout(timer)
  console.log('ok docker')
  process.exit(0)
} catch (err) {
  clearTimeout(timer)
  console.error('healthcheck failed:', err.message)
  process.exit(1)
}