const GOLD = '\x1b[38;2;255;215;0m'
const AMBER = '\x1b[38;2;255;191;0m'
const BRONZE = '\x1b[38;2;205;127;50m'
const DIM = '\x1b[38;2;184;134;11m'
const RESET = '\x1b[0m'

const LOGO = [
  '██╗  ██╗███████╗██████╗ ███╗   ███╗███████╗███████╗       █████╗  ██████╗ ███████╗███╗   ██╗████████╗',
  '██║  ██║██╔════╝██╔══██╗████╗ ████║██╔════╝██╔════╝      ██╔══██╗██╔════╝ ██╔════╝████╗  ██║╚══██╔══╝',
  '███████║█████╗  ██████╔╝██╔████╔██║█████╗  ███████╗█████╗███████║██║  ███╗█████╗  ██╔██╗ ██║   ██║   ',
  '██╔══██║██╔══╝  ██╔══██╗██║╚██╔╝██║██╔══╝  ╚════██║╚════╝██╔══██║██║   ██║██╔══╝  ██║╚██╗██║   ██║   ',
  '██║  ██║███████╗██║  ██║██║ ╚═╝ ██║███████╗███████║      ██║  ██║╚██████╔╝███████╗██║ ╚████║   ██║   ',
  '╚═╝  ╚═╝╚══════╝╚═╝  ╚═╝╚═╝     ╚═╝╚══════╝╚══════╝      ╚═╝  ╚═╝ ╚═════╝ ╚══════╝╚═╝  ╚═══╝   ╚═╝   '
]

const GRADIENT = [GOLD, GOLD, AMBER, AMBER, BRONZE, BRONZE] as const
const LOGO_WIDTH = 98

const TAGLINE = `${DIM}⚕ Nous Research · Messenger of the Digital Gods${RESET}`
const FALLBACK = `\x1b[1m${GOLD}⚕ NOUS HERMES${RESET}`

export function bootBanner(cols: number = process.stdout.columns || 80): string {
  const body = cols >= LOGO_WIDTH ? LOGO.map((text, i) => `${GRADIENT[i]}${text}${RESET}`).join('\n') : FALLBACK

  return `\n${body}\n${TAGLINE}\n\n`
}