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import { colors, path } from '../deps.ts'import { existsFileSync } from '../shared/fs.ts'
const versionMetaUrl = 'https://cdn.deno.land/aleph/meta/versions.json'
export const helpMessage = `Usage:    aleph upgrade
Options:        --version <version>  The version to upgrade to    -h, --help               Prints help message`
export default async function (version = 'latest') {  console.log('Looking up latest version...')  const { latest, versions } = await (await fetch(versionMetaUrl)).json()  if (version === 'latest') {    version = latest  } else if (!versions.includes(version)) {    version = 'v' + version    if (!versions.includes(version)) {      console.log(`${colors.red('error')}: version(${version}) not found!`)      Deno.exit(1)    }  }
  const denoExecPath = Deno.execPath()  const cmdExists = existsFileSync(path.join(path.dirname(denoExecPath), 'aleph'))  const p = Deno.run({    cmd: [      denoExecPath,      'install',      '-A',      '-f',      '--unstable',      '-n', 'aleph',      '--location', 'https://deno.land/x/aleph',      `https://deno.land/x/aleph@${version}/cli.ts`    ],    stdout: 'null',    stderr: 'inherit'  })  const status = await p.status()  if (status.success) {    if (cmdExists) {      console.log(`Aleph.js is up to ${version}!`)    } else {      console.log('Aleph.js was installed successfully!')      console.log(`Run 'aleph --help' to get started`)    }  }  Deno.exit(status.code)}