export const uuid = () => {
  if (typeof window === 'undefined') {
    // @ts-ignore
    return ([1e7] + -1e3 + -4e3 + -8e3 + -1e11).replace(/[018]/g, c =>
      (c ^ (crypto.getRandomValues(new Uint8Array(1))[0] & (15 >> (c / 4)))).toString(16),
    )
  }

  return typeof window.crypto?.randomUUID === 'function'
    ? window.crypto.randomUUID()
    : URL.createObjectURL(new Blob([])).split(/[:/]/g).pop()
}

export const sha256 = async (input: string) => {
  const buffer = new TextEncoder().encode(input)
  const digest = await crypto.subtle.digest('SHA-256', buffer)
  return Array.from(new Uint8Array(digest), byte => byte.toString(16).padStart(2, '0')).join('')
}

export const base64Encode = (str: string) => {
  return btoa(String.fromCodePoint(...new TextEncoder().encode(str)))
}

export const base64Decode = (str: string) => {
  return new TextDecoder().decode(Uint8Array.from(atob(str), c => c.codePointAt(0)!))
}