import { Rule, IParserConfig, TokenVocabulary, BaseParser } from "../../api"
import { genUmdModule, genWrapperFunction } from "./generate"

export function generateParserFactory<T extends BaseParser>(options: {
  name: string
  rules: Rule[]
  tokenVocabulary: TokenVocabulary
}): (config?: IParserConfig) => T {
  const wrapperText = genWrapperFunction({
    name: options.name,
    rules: options.rules
  })

  const constructorWrapper = new Function(
    "tokenVocabulary",
    "config",
    "chevrotain",
    wrapperText
  )

  return function (config) {
    return constructorWrapper(
      options.tokenVocabulary,
      config,
      // TODO: check how the require is transpiled/webpacked
      require("../api")
    )
  }
}

export function generateParserModule(options: {
  name: string
  rules: Rule[]
}): string {
  return genUmdModule({ name: options.name, rules: options.rules })
}