const hexList: string[] = []
for (let i = 0; i <= 15; i++)
  hexList[i] = i.toString(16)

export function buildUUID(): string {
  let uuid = ''
  for (let i = 1; i <= 36; i++) {
    if (i === 9 || i === 14 || i === 19 || i === 24)
      uuid += '-'

    else if (i === 15)
      uuid += 4

    else if (i === 20)
      uuid += hexList[(Math.random() * 4) | 8]

    else
      uuid += hexList[(Math.random() * 16) | 0]
  }
  return uuid.replace(/-/g, '')
}

let unique = 0
export function buildShortUUID(prefix = ''): string {
  const time = Date.now()
  const random = Math.floor(Math.random() * 1000000000)
  unique++
  return `${prefix}_${random}${unique}${String(time)}`
}