git ssb

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const nest = require('depnest')
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const { watch } = require('mutant')
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const appRoot = require('app-root-path')
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const i18nL = require('i18n')
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const electron = require('electron')
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exports.gives = nest('intl.sync', [
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  'locale',
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  'locales',
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  'localeNames',
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  'i18n',
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  'i18n_n',
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  'startsWith'
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])
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exports.needs = nest({
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  'settings.obs.get': 'first'
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})
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exports.create = (api) => {
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  let _locale
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  // TODO: this should probably follow the selected language
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  const collator = new Intl.Collator('default', { sensitivity: 'base', usage: 'search' })
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  return nest('intl.sync', {
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    locale,
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    locales,
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    startsWith,
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    localeNames,
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    i18n,
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    i18n_n: i18nN
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  })
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  function startsWith (text, startsWith) {
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    return collator.compare(text.slice(0, startsWith.length), startsWith) === 0
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  }
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  // Get locale value in setting
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  function locale () {
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    return api.settings.obs.get('patchwork.lang')
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  }
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  // Get all locales loaded in i18nL
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  function locales () {
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    return i18nL.getLocales()
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  }
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  function localeNames () {
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    const names = i18nL.__l('$name')
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    return locales().reduce((result, item, i) => {
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      result[item] = names[i]
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      return result
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    }, {})
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  }
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  // Get translation
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  function i18n (value, ...opts) {
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    _init()
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    return i18nL.__(value, ...opts)
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  }
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  // Get translation
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  function i18nN (value, ...opts) {
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    _init()
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    return i18nL.__n(value, ...opts)
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  }
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  // Init an subscribe to settings changes.
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  function _init () {
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    if (_locale) return
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    // TODO: Depject this!
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    i18nL.configure({
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      directory: appRoot + '/locales',
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      defaultLocale: 'en'
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    })
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    watch(api.settings.obs.get('patchwork.lang'), currentLocale => {
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      currentLocale = currentLocale || navigator.language
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      const locales = i18nL.getLocales()
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      // Try BCP47 codes, otherwise load family language if exist
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      if (locales.indexOf(currentLocale) !== -1) {
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        i18nL.setLocale(currentLocale)
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      } else {
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        i18nL.setLocale(getSimilar(locales, currentLocale))
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      }
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      // Only refresh if the language has already been selected once.
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      // This will prevent the update loop
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      if (_locale) {
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        electron.remote.getCurrentWebContents().reloadIgnoringCache()
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      }
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    })
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    _locale = true
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  }
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}
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// For now get only global languages
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function getSubLocal (loc) {
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  return typeof loc === 'string' && loc.split('-')[0]
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}
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function getSimilar (locales, option) {
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  const reindexed = {}
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  locales.forEach(function (local) {
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    (reindexed[getSubLocal(local)])
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      ? reindexed[getSubLocal(local)].concat(local)
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      : reindexed[getSubLocal(local)] = [local]
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  }, this)
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  if (reindexed[getSubLocal(option)]) {
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    return reindexed[getSubLocal(option)][0]
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  }
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  return option
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}
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