const fs = require('fs')
const YAML = require('yaml')

const writeHomepage = require('./write-homepage')
const writeCategories = require('./write-categories')
const writePages = require('./write-pages')
const writeConfig = require('./write-config')

const input = fs.readFileSync('../../defaults.yml', 'utf8')
const inputFr = fs.readFileSync('../../defaults-fr.yml', 'utf8')
const defaults = YAML.parse(input)
const defaultsFr = YAML.parse(inputFr)

const templatesPath = 'templates'
const destinationPath = 'docs'

const supportedLanguages = {
  languages: [
    {
      url: '/fr/',
      lang: 'fr-FR',
      home: 'Accueil',
      defaults: getSafeDefaults(defaultsFr, defaults),
      isFallback: false,
    },
    {
      url: '/',
      lang: 'en-US',
      home: 'Home',
      defaults: defaults,
      isFallback: true,
    },
  ],
}

supportedLanguages.languages.forEach((supportedLanguage) => {
  const { url, isFallback } = supportedLanguage
  writeHomepage(
    supportedLanguage,
    `${templatesPath}${url}`,
    `${destinationPath}${url}`
  )
  writeCategories(
    supportedLanguage,
    `${templatesPath}${url}`,
    `${destinationPath}${url}`,
    isFallback
  )
  writePages(
    supportedLanguage,
    `${templatesPath}${url}`,
    `${destinationPath}${url}`,
    isFallback
  )
  writeConfig(
    supportedLanguage,
    supportedLanguages,
    `${templatesPath}${url}`,
    `${destinationPath}${url}`,
    isFallback
  )
})

function getSafeDefaults(localizedDefaults, fallbackDefaults) {
  return { ...fallbackDefaults, ...localizedDefaults }
}