Import wp-json content using Wordpress REST API

wp-json-importer.js

const got = require('got')

async function authenticate (endpoint, username, password) {
  try {
    const response = await got(endpoint, {
      json: true,
      body: {
        username,
        password
      }
    })
    return response.body.token
  } catch (error) {
    console.log(error)
    throw new Error('Unable to login')
  }
}

async function createEntity (endpoint, token, entityType, entity) {
  try {
    const response = await got(`${endpoint}/${entityType}`, {
      json: true,
      headers: {
        Authorization: `Bearer ${token}`
      },
      body: entity
    })
    return response.body
  } catch (error) {
    console.log(error)
    throw new Error('Unable create entity')
  }
}

async function findEntityBySlug (endpoint, token, entityType, slug) {
  const response = await got(`${endpoint}/${entityType}`, {
    json: true,
    query: {
      slug
    },
    headers: {
      Authorization: `Bearer ${token}`
    }
  })

  return response.body[0]
}

const endpoint = 'http://localhost/my-content-site/wp-json'
const jwtAuthEndpoint = `${endpoint}/jwt-auth/v1/token`
const wpJsonEndpoint = `${endpoint}/wp/v2`
const username = 'admin'
const password = ''

;(async () => {
  const jwtToken = await authenticate(jwtAuthEndpoint, username, password)

  require('./news_article.json').forEach(async article => {

    const entity = await findEntityBySlug(wpJsonEndpoint, jwtToken, 'news_article', article.slug)
    if (entity) {
      console.log(`Skipping '${article.slug}' - already exists '${article.id}' `)
      return
    }

    const articleToCreate = {
      date: article.date,
      slug: article.slug,
      status: article.status,
      title: article.title.rendered,
      fields: {
        slug: article.acf.slug,
        meta_title: article.acf.meta_title,
        meta_description: article.acf.meta_description,
        content: article.acf.content
      }
    }

    console.log(`Creating '${article.slug}'`)
    const response = await createEntity(wpJsonEndpoint, jwtToken, 'news_article', articleToCreate)
    console.log(`Got id '${response.id}'`)
  })

})()