import { loopbackTest, playAudio, startMicListener } from './audio'
import { handleGuess, getSecret } from './game'
import type { GuessResult } from './game'

const RESET = '\x1b[0m'
const BOLD = '\x1b[1m'
const DIM = '\x1b[2m'
const GREEN = '\x1b[32m'
const YELLOW = '\x1b[33m'
const BLUE = '\x1b[34m'
const CYAN = '\x1b[36m'
const RED = '\x1b[31m'

async function prompt(question: string): Promise<string> {
  process.stdout.write(question)
  for await (const line of console) {
    return line.trim()
  }
  return ''
}

function getLocalHostname() {
  const proc = Bun.spawnSync(['scutil', '--get', 'LocalHostName'])
  if (proc.exitCode === 0) return proc.stdout.toString().trim() + '.local'
  return 'localhost'
}

function getDeviceName(type: 'input' | 'output'): string {
  const args = type === 'input' ? ['-c', '-t', 'input'] : ['-c']
  const proc = Bun.spawnSync(['SwitchAudioSource', ...args])
  if (proc.exitCode === 0) return proc.stdout.toString().trim()
  return 'system default'
}

function logGuess(result: GuessResult) {
  const { type, guess, guessCount } = result
  if (type === 'higher') {
    console.log(`${DIM}Guess #${guessCount}:${RESET}  ${BOLD}${guess}${RESET}  →  ${YELLOW}📢 Higher!${RESET}`)
    return
  }
  if (type === 'lower') {
    console.log(`${DIM}Guess #${guessCount}:${RESET}  ${BOLD}${guess}${RESET}  →  ${BLUE}📢 Lower!${RESET}`)
    return
  }
  console.log(`${DIM}Guess #${guessCount}:${RESET}  ${BOLD}${guess}${RESET}  →  ${GREEN}🎉 CORRECT!${RESET}`)
  console.log()
  console.log(`${CYAN}New round! Secret number: ${BOLD}${getSecret()}${RESET}`)
  console.log(`${'─'.repeat(40)}`)
  console.log()
}

async function onMessage(text: string) {
  await Bun.sleep(500)

  if (text === 'HELLO') {
    console.log(`${GREEN}${BOLD}Player connected via audio!${RESET}`)
    await playAudio('HEY BUDDY')
    return
  }

  const result = await handleGuess(text)
  if (result) logGuess(result)
}

export async function startup(port: number) {
  const soxCheck = Bun.spawnSync(['which', 'sox'])
  if (soxCheck.exitCode !== 0) {
    console.error(`\n  ${BOLD}sox is not installed.${RESET} Run: brew install sox\n`)
    process.exit(1)
  }

  console.clear()
  console.log()
  console.log(`${BOLD}Corey's Screechy Audio Demo${RESET}`)
  console.log()

  const speaker = getDeviceName('output')
  const mic = getDeviceName('input')
  console.log(`${BOLD}Speaker:${RESET}    ${GREEN}${speaker}${RESET}`)
  console.log(`${BOLD}Microphone:${RESET} ${GREEN}${mic}${RESET}`)
  console.log()

  console.log(`${YELLOW}${BOLD}🔊 Turn your volume up!${RESET}`)
  console.log(`${DIM}Testing audio: playing a chirp and listening for it...${RESET}`)
  console.log()

  const loopbackOk = await loopbackTest()

  if (loopbackOk) {
    console.log(`${GREEN}${BOLD}✓ Audio working!${RESET} ${DIM}Speaker → mic pipeline verified${RESET}`)
  } else {
    console.log(`${RED}${BOLD}✗ Couldn't hear the test chirp.${RESET}`)
    console.log()
    console.log(`${YELLOW}Try:${RESET}`)
    console.log(`  • Disconnect headphones — sound needs to travel through the air`)
    console.log(`  • Check System Settings > Sound (output: "${speaker}", input: "${mic}")`)
    console.log(`  • Turn your volume up`)
    console.log()
    await prompt(`  Press Enter to continue anyway... `)
  }

  console.clear()
  console.log()
  console.log(`${BOLD}Corey's Screechy Audio Demo${RESET}`)
  console.log(`${DIM}Speaker: ${speaker} · Mic: ${mic}${RESET}`)
  console.log()

  const hostname = getLocalHostname()
  const url = `https://${hostname}:${port}`

  console.log(`${GREEN}${BOLD}Scan QR code on your phone to play!${RESET}`)
  console.log()

  try {
    const QRCode = await import('qrcode')
    const qr = await QRCode.toString(url, { type: 'terminal', small: true })
    console.log(qr)
  } catch {
    console.log(`${BOLD}${CYAN}${url}${RESET}`)
    console.log()
  }

  console.log(`${BOLD}Secret number: ${GREEN}${getSecret()}${RESET}`)
  console.log(`${'─'.repeat(40)}`)
  console.log(`${DIM}🎤 Listening for guesses...${RESET}`)
  console.log()

  startMicListener(onMessage)
}