setup.js

const spaceImport = require("contentful-import")
const inquirer = require("inquirer")
const chalk = require("chalk")
const path = require("path")
const { writeFileSync } = require("fs")
const envfile = require("envfile")

const exportFile = require("./contentful-exported.json")

console.log(`
  In order to use Contenful and set up this project you need to provide your Space ID
  and the belonging API access tokens.
  You can find all the needed information in your Contentful space under:
  ${chalk.yellow(
    `app.contentful.com ${chalk.red("->")} Space Settings ${chalk.red(
      "->"
    )} API keys`
  )}
  The ${chalk.green("Content Management API Token")}
    will be used to import and write data to your space.
  The ${chalk.green("Content Delivery API Token")}
    will be used to ship published production-ready content in your Gatsby app.
  The ${chalk.green("Content Preview API Token")}
    will be used to show not published data in your development environment.
  Ready? Let's do it! 🎉
`)

const questions = [
  {
    name: "spaceId",
    message: "Your Space ID",
    when: !process.env.CONTENTFUL_SPACE_ID,
    validate: input =>
      /^[a-z0-9]{12}$/.test(input) ||
      "Space ID must be 12 lowercase characters",
  },
  {
    name: "managementToken",
    message: "Your Content Management API access token",
  },
  {
    name: "accessToken",
    when: !process.env.CONTENTFUL_ACCESS_TOKEN_TOKEN,
    message: "Your Content Delivery API access token",
  },
]

inquirer
  .prompt(questions)
  .then(({ spaceId, managementToken, accessToken }) => {
    const { CONTENTFUL_SPACE_ID, CONTENTFUL_ACCESS_TOKEN } = process.env

    // env vars are given precedence followed by args provided to the setup
    // followed by input given to prompts displayed by the setup script
    spaceId = CONTENTFUL_SPACE_ID || spaceId
    managementToken = managementToken
    accessToken = CONTENTFUL_ACCESS_TOKEN || accessToken

    const configFilePath = path.resolve(__dirname, "..", ".env")
    const envData = envfile.stringifySync({
      CONTENTFUL_SPACE_ID: spaceId,
      CONTENTFUL_ACCESS_TOKEN: accessToken,
    })

    writeFileSync(configFilePath, envData)
    console.log(`Config file ${chalk.yellow(configFilePath)} written`)

    return { spaceId, managementToken }
  })
  .then(({ spaceId, managementToken }) =>
    spaceImport({ spaceId, managementToken, content: exportFile })
  )
  .then((_, error) => {
    console.log(
      `All set! You can now run ${chalk.yellow(
        "yarn run dev"
      )} to see it in action.`
    )
  })
  .catch(error => console.error(error))