#!/usr/bin/env node
/**
 * Queue Worker Runner
 *
 * Standalone script zum Starten der Queue Workers.
 * Wird von PM2 als separater Prozess gestartet.
 *
 * Usage:
 *   npx tsx scripts/run-queue-worker.ts
 *   # oder via PM2
 *   pm2 start ecosystem.config.cjs --only queue-worker
 */

// Load .env with explicit path BEFORE any other imports
import { config as dotenvConfig } from 'dotenv'
import { resolve, dirname } from 'path'
import { fileURLToPath } from 'url'

// ES Module equivalent of __dirname
const __filename = fileURLToPath(import.meta.url)
const __dirname = dirname(__filename)

// Explicitly load .env from project root (handles PM2 cwd issues)
const envPath = resolve(__dirname, '..', '.env')
dotenvConfig({ path: envPath })

console.log(`[QueueRunner] Loading env from: ${envPath}`)
console.log(`[QueueRunner] PAYLOAD_SECRET loaded: ${process.env.PAYLOAD_SECRET ? 'yes' : 'NO!'}`)

// Dynamic imports after dotenv is loaded
async function main() {
  const { startEmailWorker, stopEmailWorker } = await import('../src/lib/queue/workers/email-worker')
  const { startPdfWorker, stopPdfWorker } = await import('../src/lib/queue/workers/pdf-worker')
  const { startRetentionWorker, stopRetentionWorker } = await import('../src/lib/queue/workers/retention-worker')
  const { startYouTubeUploadWorker, stopYouTubeUploadWorker } = await import('../src/lib/queue/workers/youtube-upload-worker')
  const { scheduleRetentionJobs } = await import('../src/lib/queue/jobs/retention-job')
  const { retentionSchedule } = await import('../src/lib/retention/retention-config')

  // Konfiguration via Umgebungsvariablen
  const ENABLE_EMAIL_WORKER = process.env.QUEUE_ENABLE_EMAIL !== 'false'
  const ENABLE_PDF_WORKER = process.env.QUEUE_ENABLE_PDF !== 'false'
  const ENABLE_RETENTION_WORKER = process.env.QUEUE_ENABLE_RETENTION !== 'false'
  const ENABLE_RETENTION_SCHEDULER = process.env.QUEUE_ENABLE_RETENTION_SCHEDULER !== 'false'
  const ENABLE_YOUTUBE_UPLOAD_WORKER = process.env.QUEUE_ENABLE_YOUTUBE_UPLOAD !== 'false'

  console.log('='.repeat(50))
  console.log('[QueueRunner] Starting queue workers...')
  console.log(`[QueueRunner] PID: ${process.pid}`)
  console.log(`[QueueRunner] Node: ${process.version}`)
  console.log(`[QueueRunner] Email Worker: ${ENABLE_EMAIL_WORKER ? 'enabled' : 'disabled'}`)
  console.log(`[QueueRunner] PDF Worker: ${ENABLE_PDF_WORKER ? 'enabled' : 'disabled'}`)
  console.log(`[QueueRunner] Retention Worker: ${ENABLE_RETENTION_WORKER ? 'enabled' : 'disabled'}`)
  console.log(`[QueueRunner] Retention Scheduler: ${ENABLE_RETENTION_SCHEDULER ? 'enabled' : 'disabled'}`)
  console.log(`[QueueRunner] YouTube Upload Worker: ${ENABLE_YOUTUBE_UPLOAD_WORKER ? 'enabled' : 'disabled'}`)
  console.log('='.repeat(50))

  // Workers starten
  if (ENABLE_EMAIL_WORKER) {
    startEmailWorker()
  }

  if (ENABLE_PDF_WORKER) {
    startPdfWorker()
  }

  if (ENABLE_RETENTION_WORKER) {
    startRetentionWorker()

    // Retention Scheduler starten (nur wenn Worker aktiv)
    if (ENABLE_RETENTION_SCHEDULER) {
      const cronSchedule = process.env.RETENTION_CRON_SCHEDULE || retentionSchedule.cron
      console.log(`[QueueRunner] Scheduling retention jobs with cron: ${cronSchedule}`)
      await scheduleRetentionJobs(cronSchedule)
    }
  }

  if (ENABLE_YOUTUBE_UPLOAD_WORKER) {
    startYouTubeUploadWorker()
  }

  // Graceful Shutdown
  async function shutdown(signal: string) {
    console.log(`\n[QueueRunner] Received ${signal}, shutting down gracefully...`)

    try {
      const stopPromises: Promise<void>[] = []

      if (ENABLE_EMAIL_WORKER) {
        stopPromises.push(stopEmailWorker())
      }
      if (ENABLE_PDF_WORKER) {
        stopPromises.push(stopPdfWorker())
      }
      if (ENABLE_RETENTION_WORKER) {
        stopPromises.push(stopRetentionWorker())
      }
      if (ENABLE_YOUTUBE_UPLOAD_WORKER) {
        stopPromises.push(stopYouTubeUploadWorker())
      }

      await Promise.all(stopPromises)
      console.log('[QueueRunner] All workers stopped')
      process.exit(0)
    } catch (error) {
      console.error('[QueueRunner] Error during shutdown:', error)
      process.exit(1)
    }
  }

  // Signal Handlers
  process.on('SIGTERM', () => shutdown('SIGTERM'))
  process.on('SIGINT', () => shutdown('SIGINT'))

  // Unhandled Errors
  process.on('unhandledRejection', (reason) => {
    console.error('[QueueRunner] Unhandled Rejection:', reason)
  })

  process.on('uncaughtException', (error) => {
    console.error('[QueueRunner] Uncaught Exception:', error)
    shutdown('uncaughtException')
  })

  // Keep process alive
  console.log('[QueueRunner] Workers started, waiting for jobs...')
}

main().catch((error) => {
  console.error('[QueueRunner] Fatal error:', error)
  process.exit(1)
})