netlify-cli/src/functions-templates/js/sanity-groq/sanity-groq.js

Netlify command line tool

const process = require('process')

const sanityClient = require('@sanity/client')

// You will need to configure environment variables for Sanity.io project id
// and dataset name. Optionally you may also configure a token, useful for
// reading private datasets or mutating data. The variables are named
//
// SANITY_PROJECTID
// SANITY_DATASET
// SANITY_TOKEN
//
// Read more about configuring environment variables at
// https://docs.netlify.com/configure-builds/environment-variables/#declare-variables
const client = sanityClient({
  projectId: process.env.SANITY_PROJECTID,
  dataset: process.env.SANITY_DATASET,
  token: process.env.SANITY_TOKEN,
  // CDN will not be used if token is set
  useCdn: true,
})

// A proxy for Sanity.io GROQ queries.
//
// Useful for querying private datasets with a token. Usually you will restrict
// access to this function with for example Netlify Identity.
//
// To explore what queries you can do with GROQ, check out the cheat sheet at
// https://www.sanity.io/docs/query-cheat-sheet
//
// Create Sanity.io tokens at https://manage.sanity.io
//
// Read more about restricting access to your Netlify functions at
// https://www.netlify.com/blog/2018/03/29/jamstack-architecture-on-netlify-how-identity-and-functions-work-together/#restricting-access
const handler = async (event) => {
  const { query = '' } = event.queryStringParameters
  // The rest of the query params are handled as parameters to the query
  const params = { ...event.queryStringParameters, query: null }

  return client
    .fetch(query, params)
    .then((result) => {
      return {
        statusCode: 200,
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(result),
      }
    })
    .catch((error) => {
      return {
        headers: { 'Content-Type': 'application/json' },
        statusCode: error.statusCode || 500,
        body: error.responseBody || JSON.stringify({ error: 'Unknown error occurred' }),
      }
    })
}

module.exports = { handler }