import crypto from 'crypto'
import fs from 'fs'
import { getLatestBuiltFilesList } from './utils.mjs'

function sha256(filePath) {
  return new Promise((resolve, reject) => {
    try {
      fs.createReadStream(filePath)
        .pipe(crypto.createHash('sha256').setEncoding('hex'))
        .on('finish', function () {
          resolve(this.read())
        })
        .on('error', reject)
    } catch (error) {}
  })
}

process.on('uncaughtException', function (err) {
  console.log('Caught exception: ' + err)
})

;(async () => {
  console.log('Writing SHA256 sums to dist/SHA256SUMS')

  try {
    const files = await getLatestBuiltFilesList()

    process.chdir('dist')

    let hashes = await Promise.all(
      files.map(async (fileName) => {
        try {
          const hash = await sha256(fileName)
          return `${hash}  ${fileName}`
        } catch (error) {
          console.error('Unable to hash file', fileName)
          return null
        }
      }),
    )
    hashes = hashes.join('\n')
    await fs.promises.writeFile('SHA256SUMS', hashes)
    console.log(`Successfully wrote SHA256SUMS:\n${hashes}`)
  } catch (err) {
    console.error(err)
    process.exitCode = 1
  }
})()