/**
 * Website Status API Route
 *
 * GET: Health-Check ob die Website (Port 3000) erreichbar ist
 */

import { NextResponse } from 'next/server'

const WEBSITE_URL = process.env.WEBSITE_URL || 'http://website:3000'
const WEBSITE_FALLBACK_URL = 'https://macmini:3000'

export async function GET() {
  const start = Date.now()

  try {
    const controller = new AbortController()
    const timeout = setTimeout(() => controller.abort(), 5000)

    let response: Response | null = null
    try {
      response = await fetch(WEBSITE_URL, {
        method: 'HEAD',
        signal: controller.signal,
        cache: 'no-store',
      })
    } catch {
      // Docker-internal name failed, try fallback
      response = await fetch(WEBSITE_FALLBACK_URL, {
        method: 'HEAD',
        signal: controller.signal,
        cache: 'no-store',
      })
    } finally {
      clearTimeout(timeout)
    }

    const responseTime = Date.now() - start

    return NextResponse.json({
      online: response.ok || response.status < 500,
      responseTime,
      statusCode: response.status,
    })
  } catch (error) {
    const responseTime = Date.now() - start
    return NextResponse.json({
      online: false,
      responseTime,
      error: error instanceof Error ? error.message : 'Website nicht erreichbar',
    })
  }
}