'use strict'

const { featureSet } = require('../../util/feature-detection.js')
/** @type {import('node:crypto')} */
const crypto = featureSet.has('crypto')
  ? require('node:crypto')
  : {
      getHashes: () => [],
      hash: (algorithm, data, outputEncoding) => {
        return outputEncoding === undefined || outputEncoding === 'buffer'
          ? Buffer.alloc(0)
          : ''
      },
      randomBytes: (size) => {
        const buf = Buffer.allocUnsafe(size)
        for (let i = 0; i < size; i++) {
          buf[i] = Math.floor(Math.random() * 256)
        }
        return buf
      },
      randomInt: function randomInt (max) {
        return Math.floor(Math.random() * max)
      },
      randomFillSync: function randomFillSync (buffer, _offset, _size) {
        for (let i = 0; i < buffer.length; ++i) {
          buffer[i] = Math.random() * 255 | 0
        }
        return buffer
      }
    }

module.exports = crypto