import fs from 'fs-extra'
import path from 'path'
import { glob } from 'glob'
import { cwd, builderConfigs } from '../constants'

const cjsToEs = (contents: string) => {
  return contents.replace(
    new RegExp(
      `${builderConfigs.targetLibName}\\/${builderConfigs.targetLibCjsDir}\\/`,
      'g'
    ),
    `${builderConfigs.targetLibName}/${builderConfigs.targetLibEsDir}/`
  )
}

const esToCjs = (contents: string) => {
  return contents.replace(
    new RegExp(
      `${builderConfigs.targetLibName}\\/${builderConfigs.targetLibEsDir}\\/`,
      'g'
    ),
    `${builderConfigs.targetLibName}/${builderConfigs.targetLibCjsDir}/`
  )
}

export const fixDepsPaths = async () => {
  if (
    !builderConfigs.targetLibName ||
    !builderConfigs.targetLibCjsDir ||
    !builderConfigs.targetLibEsDir
  )
    return
  return new Promise((resolve, reject) => {
    glob('{esm,lib}/**/*.{js,ts,less,scss}', { cwd }, (err, files) => {
      if (err) return reject(err)
      files.forEach((filename) => {
        const isCjsPath = filename.includes(`lib/`)
        const isEsPath = filename.includes(`esm/`)
        const filepath = path.resolve(cwd, filename)
        const contents = fs.readFileSync(filepath, 'utf-8')
        const replaced = isCjsPath
          ? esToCjs(contents)
          : isEsPath
          ? cjsToEs(contents)
          : contents
        fs.writeFileSync(filepath, replaced, 'utf-8')
      })
      resolve(0)
    })
  })
}