import { useDocument } from '@terrace-lang/js/document'
import { createFileReader } from '@terrace-lang/js/readers/node-readline'
import fs from 'fs/promises'
import path from 'path'
import process from 'node:process'
import knownNodes from './index.js'

export default async function (originalDoc, rootLevel, context) {
  const includePath = originalDoc.tail()
  const includedDoc = useDocument(createFileReader(includePath))
  const { next, head, tail, level } = includedDoc

  const node = {
    type: originalDoc.head(),
    class: '',
    children: []
  }


  const root = path.dirname(context.filePath)
  const originalFilepath = context.filePath
  context.filePath = includePath

  process.chdir(path.dirname(originalFilepath))
  while (await next()) {
    if (!head()) continue
    const block = head()

    if (!knownNodes[block]) continue
    node.children.push(await knownNodes[block](includedDoc, level(), context))
  }

  process.chdir(path.dirname(originalFilepath))

  return node
}