import { Command } from 'commander'
import { join } from 'path'
import { exec, mkdir } from 'shelljs'
import { readJSON, writeContent, writeJSON } from '../utils/files'
import { gen } from '../utils/npm'
import babel from './opt/babel'
import tsc from './opt/tsc'
import bbMain from './tpl/cli/bb.main'
import tsMain from './tpl/cli/ts.main'
import typings from './tpl/cli/typings'

export default function (name: string, cmd: Command) {
  const dir = gen(name)
  const opt = cmd.opts()

  if (opt.ts) {
    tsc(dir)
  } else {
    babel(dir, true)
  }

  exec(`cd ${dir} && npm i -S commander`)
  template(dir, opt.ts)
  cli(dir, opt.ts)
}

function template(dir: string, ts: boolean) {
  const src = join(dir, 'src')

  mkdir('-p', src)

  if (ts) {
    writeContent(src, 'main.ts', tsMain)
    writeContent(src, 'typings.d.ts', typings)
  } else {
    writeContent(src, 'main.js', bbMain)
  }
}

function cli(dir: string, ts: boolean) {
  const pack = readJSON(dir, 'package.json')

  pack.main = 'dist/main.js'
  pack.bin = {
    [pack.name]: pack.main,
  }

  pack.scripts.dist = 'run-s dist:*'
  pack.scripts['dist:lint'] = `npm run lint`
  pack.scripts['dist:clean'] = `npm run clean`
  pack.scripts['dist:build'] = ts ? 'tsc' : 'babel src -d dist'

  writeJSON(dir, 'package.json', pack, 2)
}