import path from 'path'
import { spawn } from 'child_process'
import { fileURLToPath, pathToFileURL } from 'url'

export default class Util {
  constructor(root_import_meta_url) {
    this._root_import_meta_url = root_import_meta_url
  }

  getPathFromRoot(add) {
    const __dirname = path.dirname(fileURLToPath(this._root_import_meta_url));
    return path.join(__dirname,'./', add)
  }

  getUrlFromRoot(add) {
    return path.join(this._root_import_meta_url,'../', add)
  }

  runCommand(command, options = [], folder = null, stream = function() {}) {
    return new Promise(function(res, rej) {
      stream(`[Command] ${folder ? folder : ''}${command} ${options.join(' ')}\n`)
      let processor = spawn(command, options, {
        shell: true,
        cwd: folder,
      })
      let timeOuter = setInterval(function() {
        processor.stdin.write('n\n')
      }, 250)
      processor.stdout.on('data', function(data) {
        stream(data.toString())
      })
      processor.stderr.on('data', function(data) {
        stream(data.toString())
      })
      processor.on('error', function(err) {
        clearInterval(timeOuter)
        rej(err)
      })
      processor.on('exit', function (code) {
        clearInterval(timeOuter)
        if (code !== 0) {
          return rej(new Error('Program returned error code: ' + code))
        }
        res(code)
      })
    })
  }
}