import { Site } from './config'
import { insertPingLog, getLastLog } from './appDb'
import { sendStatusAlert } from './notify'

export async function pingSite(site: Site): Promise<{
  status: 'up' | 'down' | 'degraded'
  ms: number
  code: number | null
  error: string | null
}> {
  const start = Date.now()
  const controller = new AbortController()
  const timer = setTimeout(() => controller.abort(), 10000)

  try {
    const res = await fetch(site.url, {
      signal: controller.signal,
      headers: { 'User-Agent': 'VPSPanel/1.0' },
    })
    clearTimeout(timer)
    const ms = Date.now() - start
    const status = res.ok ? (ms > 3000 ? 'degraded' : 'up') : 'down'
    return { status, ms, code: res.status, error: null }
  } catch (e: unknown) {
    clearTimeout(timer)
    const ms = Date.now() - start
    const isTimeout = e instanceof Error && e.name === 'AbortError'
    return { status: 'down', ms, code: null, error: isTimeout ? 'Timeout' : (e instanceof Error ? e.message : 'Hata') }
  }
}

export async function pingAndLog(site: Site) {
  const previous = await getLastLog(site.id)
  const result = await pingSite(site)
  await insertPingLog({ site_id: site.id, ...result })

  // Durum değişti mi? → bildirim gönder
  if (previous && previous.status !== result.status) {
    sendStatusAlert(site.name, site.url, previous.status, result.status, result.ms).catch(() => {})
  }

  return result
}