import { readFileSync, writeFileSync, readdirSync } from 'node:fs'
import { fileURLToPath } from 'node:url'
import { dirname, join, relative } from 'node:path'

import ts2json from './ts2json.mjs'

const __filename = fileURLToPath(import.meta.url)
const __dirname = dirname(__filename)

const buildDir = join(__dirname, '..', 'build')
const files = (await readdirSync(buildDir, { recursive: true }))
  .filter(file => file.endsWith('.js'))
  .map(file => join(buildDir, file))

for (const file of files) {
  reflectType5(file, { debug: true })
}

function reflectType5(srcFile, options = { debug: false }) {
  log(`=========Reflecting file "${relative(__dirname, srcFile)}"`)

  const defFile = srcFile.replace(/.js$/, '.d.ts')
  const src = String(readFileSync(srcFile))
  const defs = String(readFileSync(defFile))
  const parsedDefs = ts2json(defFile)
  console.log('Defs from', defFile, 'are', parsedDefs)

  const typeDefMatches = defs.matchAll(/: ({(?:(?!\n}).)+\n}) & (?:(?!ReflectedTypeInfo).)+ReflectedTypeInfo/gs)
  if (!typeDefMatches) {
    log('No ReflectedTypeInfo found.')
    return
  }

  const typeDefs = Array.from(typeDefMatches).map(def => def[1])
  log(`  ${typeDefs.length} ReflectedTypeInfo found`)

  let index = 0
  let srcReflected = src.replaceAll(/(\s*)\.ship\(\)/g, () => {
    const def = typeDefs[index]
    index++
    return `.ship({ reflectedType5: \`${def}\` })`
  })
  log(`  ReflectedTypeInfo injected in ${index} occurrences of .ship()`)

  if (index !== typeDefs.length) {
    log('  WARNING: not all ReflectedTypeInfo occurrences could be injected')
  }

  for (const id in parsedDefs) {
      if (id.includes('interface')) continue
      srcReflected +=
          `\n${id}._reflectedType6 = ${JSON.stringify(parsedDefs[id])}\n`
  }
  writeFileSync(srcFile, srcReflected)

  function log(...args) {
    if (options.debug) {
      console.log(...args)
    }
  }
}