import { SYMBOLS, parse, isScope, isMacro, getTail, getText, getUnmatched, isCollection } from './core.js'

const schemaTCE = `
macros
 primitive match number string
 section
  pos number tail
  content string unmatched
  position number
 options
  parameter1 number
  parameter2 string
  literal unmatched string
  unmatched primitive

root
 title string
 options options collection
 subsection section
 list
  - string array
 collection
  section collection
 collection2
  unmatched collection
`

function head(line) {
  return line.split(' ')[0]
}

function tail(line) {
  return line.split(' ').slice(1).join(' ')
}

function chain(...macroNames) {
  return (args) => {
    for (const macroName of macroNames) {
      if (args.macros[macroName]) args.entry = args.macros[macroName](args)
    }
    return args.entry
  }
}

const schema = {
  macros: {
    tail({ entry }) {
      return [head(entry[0]), tail(entry[0])]
    },
    string({ entry }) {
      return [entry[0], entry[1].toString()]
    },
    number({ entry }) {
      const num = +entry[1]
      if (isNaN(num) || entry[1] === '') return entry
      return [entry[0], num]
    },
    primitive(args) {
      const num = macros.number(args)
      return num !== undefined ? num : macros.string(args)
    },
    scope({ addScope, head, tail, entry }, definition) {
      return addScope({ definition, head, tail, entry })
    },
    section: isScope({
      [SYMBOLS.TAIL]: getTail('pos', isMacro('number')),
      [SYMBOLS.UNMATCHED]: getText('content', isMacro('string')),
      position: isMacro('number')
    }),
    options: isScope({
      parameter1: isMacro('number'),
      parameter2: isMacro('string'),
      unmatched: isMacro('string'),
      [SYMBOLS.UNMATCHED]: getUnmatched(isMacro('any')),
    }),
    any(args) {
      const macro = args.macros[args.head]
      if (macro) return macro(args)
      const numResult = args.macros.number(args)
      if (numResult !== undefined) return numResult
      args.tail = args.entry
      return args.macros.string(args)
    },
  },
  root: {
    // Move tail into value position and cast it to string.
    title: chain('tail', 'string'),
    // options: isMacro('options'),
    // subsection: isMacro('section'),
    // list: isScope({
    //   '-': isMacro('string')
    // }),
    // collection: isScope({
    //   section: isCollection(isMacro('section'))
    // }),
    // collection2: isScope({
    //   [SYMBOLS.UNMATCHED]: getUnmatched(isMacro('any'))
    // })
  }
}


const lines = [
  `title Example`,
  `options`,
  ` parameter1 30`,
  ` parameter2 Enim eu id anim minim reprehenderit nostrud eu amet deserunt ea ut do cupidatat ea.`,
  `options`,
  ` parameter1 0`,
  ` parameter2 Esse incididunt et est adipisicing eiusmod aliqua enim ea aliqua id enim.`,
  `subsection`,
  ` position 1`,
  ` Ea dolore in aliquip fugiat anim adipisicing amet aute tempor et deserunt est duis sint.`,
  `subsection 2`,
  ` position 2`,
  ` Aute deserunt incididunt ad in sint adipisicing est officia velit pariatur ipsum deserunt quis nulla.`,
  ` Ea dolore in aliquip fugiat anim adipisicing amet aute tempor et deserunt est duis sint.`,
  `list`,
  ` - item 1`,
  ` - item 2`,
  `collection`,
  ` section`,
  `  lorem ipsum 1`,
  ` section`,
  `  lorem ipsum 2`,
  `collection2`,
  ` section`,
  `  position 3`,
  `  Laborum aute anim occaecat occaecat pariatur tempor proident magna sit magna non non.`,
  ` list`,
  `  1`,
  `  2`
]

async function main() {
  console.dir(await parse(lines, schema), { depth: null })
}

main()