quasar

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const path = require('node:path')
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const glob = require('fast-glob')
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const fse = require('fs-extra')
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const { logError, writeFileIfChanged, convertToCjs } = require('./build.utils')
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const
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  root = path.resolve(__dirname, '..'),
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  resolve = file => path.resolve(root, file)
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const cjsBanner = setName => `/**
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 * DO NOT EDIT THIS FILE. It is automatically generated
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 * from its .mjs counterpart (same filename but with .mjs extension).
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 * Edit that file instead (${ setName }).
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 */
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`
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function parse (prop, txt) {
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  const
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    propIndex = txt.indexOf(prop),
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    startIndex = txt.indexOf('\'', propIndex) + 1
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  let stopIndex = txt.indexOf('\'', startIndex)
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  while (txt.charAt(stopIndex - 1) === '\\') {
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    stopIndex = txt.indexOf('\'', stopIndex + 1)
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  }
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  return txt.substring(startIndex, stopIndex).replace('\\', '')
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}
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module.exports.generate = function () {
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  const languages = []
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  const promises = []
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  try {
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    glob.sync('lang/*.mjs', { cwd: root, absolute: true })
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      .forEach(file => {
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        const content = fse.readFileSync(file, 'utf-8')
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        const isoName = parse('isoName', content)
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        const nativeName = parse('nativeName', content)
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        languages.push({ isoName, nativeName })
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        const cjsFile = file.replace('.mjs', '.js')
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        const banner = cjsBanner(path.basename(file))
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        promises.push(
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          writeFileIfChanged(cjsFile, convertToCjs(content, banner))
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        )
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      })
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    const
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      langFile = resolve('lang/index.json'),
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      quasarLangIndex = JSON.stringify(languages)
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    promises.push(
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      writeFileIfChanged(langFile, quasarLangIndex)
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    )
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    return Promise.all(promises).then(() => languages)
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  }
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  catch (err) {
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    logError('build.lang.js: something went wrong...')
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    console.log()
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    console.error(err)
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    console.log()
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    process.exit(1)
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  }
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}
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