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import { colors, ensureDir, gzipDecode, path, Untar } from '../deps.ts'import { ensureTextFile } from '../shared/fs.ts'import util from '../shared/util.ts'import { VERSION } from '../version.ts'
export const helpMessage = `Usage:    aleph init <dir> [...options]
<dir> represents the directory of Aleph.js app,if the <dir> is empty, the current directory will be used.
Options:    -h, --help  Prints help message`
export default async function (n?: string) {  const cwd = Deno.cwd()  const rev = 'master'
  const name = n || (await ask('Name:')).trim()  if (name === '') {    return  }
  const template = 'hello-world' // todo: add template select ui  const vscode = await confirm('Add recommended workspace settings of VS Code?')
  console.log('Downloading template...')  const resp = await fetch('https://codeload.github.com/alephjs/alephjs-templates/tar.gz/' + rev)  const gzData = await Deno.readAll(new Deno.Buffer(await resp.arrayBuffer()))
  console.log('Saving template...')  const tarData = gzipDecode(gzData)  const entryList = new Untar(new Deno.Buffer(tarData))
  for await (const entry of entryList) {    if (entry.fileName.startsWith(`alephjs-templates-${rev}/${template}/`)) {      const fp = path.join(cwd, name, util.trimPrefix(entry.fileName, `alephjs-templates-${rev}/${template}/`))      if (entry.type === 'directory') {        await ensureDir(fp)        continue      }      await ensureTextFile(fp, '')      const file = await Deno.open(fp, { write: true })      await Deno.copy(entry, file)    }  }
  const gitignore = [    '.DS_Store',    'Thumbs.db',    '.aleph/',    'dist/',  ]  const importMap = {    imports: {      '~/': './', '@/': './',      'aleph': `https://deno.land/x/aleph@v${VERSION}/mod.ts`,      'aleph/': `https://deno.land/x/aleph@v${VERSION}/`,      'react': 'https://esm.sh/react@17.0.1',      'react-dom': 'https://esm.sh/react-dom@17.0.1',    },    scopes: {}  }  await Promise.all([    Deno.writeTextFile(path.join(cwd, name, '.gitignore'), gitignore.join('\n')),    Deno.writeTextFile(path.join(cwd, name, 'import_map.json'), JSON.stringify(importMap, undefined, 4))  ])
  if (vscode) {    const extensions = {      'recommendations': [        'denoland.vscode-deno'      ]    }    const settigns = {      'deno.enable': true,      'deno.unstable': true,      'deno.import_map': './import_map.json'    }    await ensureDir(path.join(name, '.vscode'))    await Promise.all([      Deno.writeTextFile(path.join(name, '.vscode', 'extensions.json'), JSON.stringify(extensions, undefined, 4)),      Deno.writeTextFile(path.join(name, '.vscode', 'settings.json'), JSON.stringify(settigns, undefined, 4))    ])  }
  console.log('Done')  console.log(colors.dim('---'))  console.log(colors.green('Aleph.js is ready to go!'))  console.log(`${colors.dim('$')} cd ${name}`)  console.log(`${colors.dim('$')} aleph dev     ${colors.dim('# start the app in `development` mode')}`)  console.log(`${colors.dim('$')} aleph start   ${colors.dim('# start the app in `production` mode')}`)  console.log(`${colors.dim('$')} aleph build   ${colors.dim('# build the app to a static site (SSG)')}`)  console.log(colors.dim('---'))  Deno.exit(0)}
async function ask(question: string = ':', stdin = Deno.stdin, stdout = Deno.stdout) {  await stdout.write(new TextEncoder().encode(question + ' '))  const buf = new Uint8Array(1024)  const n = <number>await stdin.read(buf)  const answer = new TextDecoder().decode(buf.subarray(0, n))  return answer.trim()}
async function confirm(question: string = 'are you sure?') {  let a: string  while (!/^(y(es)?|no?)$/i.test(a = (await ask(question + ' [y/n]')).trim())) { }  return a.charAt(0).toLowerCase() === 'y'}