const knownNodes = require('./nodes/index.js')

module.exports = async function(doc) {
  const { next, line, match, tail, level, head } = doc

  const pageData = {
    type: `Page`,
    title: '',
    description: [],
    layout: '',
    children: []
  }

  while(await next()) {
    if (!line()) continue
    if (match('title')) pageData.title = tail()
    else if (match('layout')) pageData.layout = tail()
    else if (match('description')) {
      const l = level()
      while(await next(l)) {
        pageData.description.push(line(l))
      }
    }
    else if (match('Section')) {
      pageData.children.push(await knownNodes.Section(doc, level()))
    }
  }

  console.dir(pageData, { depth: null })

  return pageData
}