import { parse, stringifyDoc } from './parse-stringify'
import { walker } from './walker.js'

class MML2OMML {
  constructor(mmlString, options = {}) {
    this.inString = mmlString
    this.inXML = parse(mmlString, options)
    this.outXML = false
    this.outString = false
  }

  run() {
    const outXML = {}
    walker({ children: this.inXML, type: 'root' }, outXML)
    this.outXML = outXML
  }

  getResult() {
    this.outString = stringifyDoc([this.outXML])
    return this.outString
  }
}

export const mml2omml = (mmlString, options) => {
  const converter = new MML2OMML(mmlString, options)
  converter.run()
  return converter.getResult()
}