gridsome.server.js

// Server API makes it possible to hook into various parts of Gridsome
// on server-side and add custom data to the GraphQL data layer.
// Learn more: https://gridsome.org/docs/server-api

// Changes here requires a server restart.
// To restart press CTRL + C in terminal and run `gridsome develop`

const path = require('path')
const moment = require('moment')

const envLocale = process.env.LOCALE
const dateFormat = {
  'ru-ru': 'D MMMM YYYY',
  'en-en': 'MMMM D YYYY',
}

/**
 * Gets first line and strips tags.
 * @param {String} text
 * @returns
 */
function getSafeDescription(text) {
  return text.split('\n', 1)[0].replace(/<\/?[^>]+(>|$)/g, '')
}

/**
 * Exports.
 */
module.exports = function (api) {
  // Set locale custom client context.
  api._app.pages.hooks.pageContext.tap('siteLocale', (context) => {
    context.locale = envLocale
    return context
  })

  // Load catalog series photos.
  const collectionsNetlify = {
    ProductEndMill: 'photos',
    ProductDrill: 'photos',
    ProductThreadMill: 'photos',
    News: 'image',
    Tech: 'image',
  }

  const titleMap =
    envLocale === 'ru-ru'
      ? {
          ProductEndMill: 'Концевая фреза',
          ProductDrill: 'Сверло',
          ProductThreadMill: 'Резьбовая фреза',
        }
      : {
          ProductEndMill: 'End mill',
          ProductDrill: 'Drill',
          ProductThreadMill: 'Thread mill',
        }

  const seriesCollectionMap = {
    ProductEndMill: 'ProductItemEndMill',
    ProductDrill: 'ProductItemDrill',
    ProductThreadMill: 'ProductItemThreadMill',
  }

  // Collections with 'i18n' field. Contains multilingual content.
  const i18nCollections = {
    ...seriesCollectionMap,
    ProductType: true,
  }

  /**
   * Implements hook on each node creation.
   */
  api.onCreateNode((options) => {
    // We should fix image paths broken by netlifyCMS
    // If image path match 'fileName.jpg' without leading './'
    // then change it to path relative to content markdown file.
    const fieldName = collectionsNetlify[options.internal.typeName]
    if (
      fieldName &&
      options[fieldName] &&
      typeof options[fieldName] === 'string'
    ) {
      const imagePath = options[fieldName]
      // If image path match 'fileName.jpg' without leading './'
      if (/^\w/.test(imagePath) && !/^[a-z][a-z0-9+.-]*:/i.test(imagePath)) {
        const out = path.join(path.dirname(options.internal.origin), imagePath)
        console.warn(
          `Broken image on ${options.internal.typeName}/{${fieldName}}:: `,
          out
        )
        options[fieldName] = out
      }
    }

    // Insert localized date value manually.
    // @todo Remove it when fucking gridsome fix context query variables.
    if (options.internal.typeName === 'News') {
      options = {
        ...options,
        description: getSafeDescription(options.content),
        localeDate: moment(options.date)
          .locale(envLocale)
          .format(dateFormat[envLocale]),
      }
    }

    // If node type is multilingual then process localized data
    if (i18nCollections[options.internal.typeName] && options.i18n) {
      for (const [key, value] of Object.entries(options.i18n[envLocale])) {
        options[key] = value
      }
      delete options.i18n
    }

    // If node type is series than:
    if (seriesCollectionMap[options.internal.typeName]) {
      // Compose title value.
      const productItems = api._store
        .getCollection(seriesCollectionMap[options.internal.typeName])
        .findNodes({ series: options.id })

      options.title =
        titleMap[options.internal.typeName] + ' ' + options.id.toUpperCase()
      options.description = options.content
      options.keywords = productItems.map((i) => i.series + i.name).join(', ')
    }

    return options
  })
}