a simple Express/NodeJS REST API for verifying medical marijuana patients using the Greenlife verification system.

index.js

const express = require('express');
const request = require('request');
const app = express();
const port = process.env.PORT || 3000;

app.get('/:patientId', (req, res) => {
  const options = { method: 'GET',
    url: 'https://verify.greenlifemedical.com/recommendations',
    qs: { utf8: '%E2%9C%93', rec_id: req.params.patientId }
  };
  request(options, (error, response, body) => {
    if (error) throw new Error(error);
    const isValid = !body.includes('No recommendation found');
    res.json({isValid});
  });
});

app.listen(port, () => {
  console.log(`Server listening on port ${port}`);
});

This is part of a full article which can be found here: https://joshterrill.com/building-an-api-for-an-app-that-doesnt-have-an-api/