import { serve } from '@hono/node-server'
import { logger } from './lib/logger.js'
import { app } from './app.js'
import { runMigrations } from './db/startup.js'
import { seedMockBots, seedClassicBots } from './engine/mock.js'
import { startBackgroundFights } from './engine/background.js'
import { getActiveFighterCount } from './engine/orchestrator.js'
import { clearAllPending } from './engine/human-responses.js'
import { seedDevTournament } from './engine/dev-seed.js'

// Production env validation — warn but don't crash (wallet features degrade gracefully)
if (process.env.NODE_ENV === 'production') {
  const walletVars = ['BOTFIGHTS_NWC_URL', 'BOTFIGHTS_WALLET_ENCRYPTION_KEY']
  const missing = walletVars.filter(k => !process.env[k])
  if (missing.length > 0) {
    logger.warn('env', `Missing env vars: ${missing.join(', ')} — wallet/payment features disabled`)
  }
  if (!process.env.CORS_ORIGIN || process.env.CORS_ORIGIN === '*') {
    logger.warn('env', 'CORS_ORIGIN not set — allowing all origins')
  }
}

// Run migrations and seed mock bots before starting the server
runMigrations()
await seedMockBots()
await seedClassicBots()

// Dev mode: seed tournament + betting data for testing
if (process.env.NODE_ENV !== 'production') {
  await seedDevTournament()
}

const port = Number(process.env.PORT) || 9100

serve({ fetch: app.fetch, port }, () => {
  logger.info('server', `listening on http://localhost:${port}`)

  // Start background fight loop so the site always has fresh activity
  startBackgroundFights()
})

// Graceful shutdown — drain in-flight fights before exiting
const shutdown = async (signal: string) => {
  logger.info('server', `${signal} received, shutting down...`)
  const active = getActiveFighterCount()
  if (active > 0) {
    logger.info('server', `${active} fighters still active, waiting 10s...`)
  }
  await new Promise(r => setTimeout(r, active > 0 ? 10_000 : 500))
  clearAllPending()
  logger.info('server', 'shutdown complete')
  process.exit(0)
}
process.on('SIGTERM', () => shutdown('SIGTERM'))
process.on('SIGINT', () => shutdown('SIGINT'))