import { useDocument } from '@terrace/core'
import { createStringReader } from '@terrace/core/readers/js-string'

const lines = [
  `name @terrace/core`,
  `version 0.0.1`,
  `randomthing test`,
  `license MIT`,
  `license GPL`,
  `exports`,
  ` .`,
  `  import ./dist/index.js`,
  `  require ./dist/index.cjs`,
  ` ./parser`,
  `  import ./dist/parser.js`,
  `  require ./dist/parser.cjs`,
  ``,
  ` ./document`,
  `  import ./dist/document.js`,
  `  require ./dist/document.cjs`,
  ``,
  ` ./readers/node-readline`,
  `  import ./dist/readers/node-readline.js`,
  `  require ./dist/readers/node-readline.cjs`,
  ``,
  ` ./readers/js-string`,
  `  import ./dist/readers/js-string.js`,
  `  require ./dist/readers/js-string.cjs`,
  `scripts`,
  ` test vitest ./src`,
  ` build vite build`,
  `devDependencies`,
  ` vite ^3.2.3`,
  ` vitest ^0.24.5`,
  ``,
  `author`,
  ` name Joshua Bemenderfer`,
  ` email josh@thederf.com`,
  ` `,
  ` Further comments below. As I will now demonstrate, there is no simple`,
  `  even if embedded`,
  ` way of dealing with this problem.`,
]

async function main() {
  const { toArrays } = useDocument(createStringReader(lines))
  const resultArrays = await toArrays()
  console.dir(resultArrays, { depth: null })

  const { tail, each, match, buildObject } = useDocument(createStringReader(lines))

  const structure = {
    name: null,
    version: null,
    license: null,
    exports: null,
    scripts: null,
    devDependencies: null,
    author: null
  }

  await each(async () => {
    if (match('name')) structure.name = tail().trim()
    if (match('version')) structure.version = tail().trim()
    if (match('license')) structure.license = tail().trim()
    // FIXME: Order of operations causes other parts to break if this doesn't run first?!
    if (match('exports')) structure.exports = await buildObject([], async () => {
      const section = { import: null, require: null }

      await each(() => {
        if (match('import')) section.import = tail().trim()
        if (match('require')) section.require = tail().trim()
        if (section.import && section.require) return true
      })

      return section
    })
    if (match('scripts')) structure.scripts = await buildObject()
    if (match('devDependencies')) structure.devDependencies = await buildObject()
    if (match('author')) structure.author = await buildObject(['name', 'email', '#text'])

    return structure.name &&
      structure.version &&
      structure.license &&
      structure.exports &&
      structure.scripts &&
      structure.devDependencies &&
      structure.author
  })

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

main()