import fs from 'fs'
import path from 'path'

const root = path.resolve('src/views/douyin/components/image-point-cloud')

function walk(d) {
  for (const f of fs.readdirSync(d)) {
    const p = path.join(d, f)
    if (fs.statSync(p).isDirectory()) walk(p)
    else if (f.endsWith('.js')) convert(p)
  }
}

function convert(file) {
  let s = fs.readFileSync(file, 'utf8')

  s = s.replace(
    /const\s+\{([^}]+)\}\s*=\s*require\((['"])(.*?)\2\)/g,
    (_m, names, _q, mod) => `import {${names}} from '${mod}'`
  )
  s = s.replace(
    /const\s+(\w+)\s*=\s*require\((['"])(.*?)\2\)/g,
    (_m, name, _q, mod) => `import * as ${name} from '${mod}'`
  )

  // remove config perf require block
  s = s.replace(
    /try\s*\{[\s\S]*?POINT_CLOUD_PERF_LOG[\s\S]*?\}\s*catch[\s\S]*?\{[\s\S]*?\}/,
    'let _perfLog = false'
  )

  s = s.replace(/module\.exports\s*=\s*\{([\s\S]*?)\}\s*$/m, (_m, body) => `export {${body}}`)
  s = s.replace(/module\.exports\s*=\s*(\w+)\s*$/m, 'export default $1')

  fs.writeFileSync(file, s)
  console.log('converted', file)
}

walk(root)